CAMERA MODULE AND ELECTRONIC DEVICE

TECHNICAL FIELD

This disclosure relates to the field of electronic device technologies, and in particular, to a camera module and an electronic device.

BACKGROUND

To improve product competitiveness of a mobile phone, an integrated high-performance camera lens has become an important development trend of a current mobile phone, and aspects such as a photographing focal segment, resolution, and imaging quality of the camera lens of the mobile phone all need to be further improved. Therefore, a camera lens with a single focal segment and a digital zoom manner cannot meet a requirement of a consumer. Currently, high-magnification optical zoom of a camera lens of a mobile phone released in the market is basically “jump-type” zoom. To be specific, a plurality of camera lenses with different focal lengths are separately mounted, and cooperate with algorithm-based digital zoom, to implement hybrid optical zoom. Consequently, a quantity of camera lenses of the mobile phone becomes larger, thereby occupying more space, and affecting appearance quality of the mobile phone.

SUMMARY

This disclosure provides a camera module and an electronic device, to implement a hybrid zoom photographing effect by using one camera lens, and further improve imaging quality.

According to a first aspect, this disclosure provides a camera module. The camera module may include a camera lens, a variable aperture, and a photosensitive element. The camera lens may include a plurality of lenses arranged along a direction from an object side to an image side. The variable aperture may be located on an object side of one of the lenses, a clear aperture of the variable aperture may be adjusted to a first clear aperture and a second clear aperture, and a quantity of apertures of the camera lens may be adjusted to F1 when the clear aperture of the variable aperture is the first clear aperture, or a quantity of apertures of the camera lens may be adjusted to F2 when the clear aperture of the variable aperture is the second clear aperture, where F1 and F2 meet a condition F1≥F2. The photosensitive element is disposed on an imaging surface of the camera lens, and the photosensitive element includes a photosensitive area. The camera module may include two imaging modes, and the two imaging modes are respectively a first imaging mode and a second imaging mode. In the first imaging mode, the quantity of apertures of the camera lens is F1, and the photosensitive element may be configured to: enable the camera lens to perform imaging in a full area of the photosensitive area, and adjust angular resolution of the full area of the photosensitive area to δ; and in the second imaging mode, the quantity of apertures of the camera lens is F2, and the photosensitive element may be configured to: enable the camera lens to perform imaging in a partial area of the photosensitive area, and adjust angular resolution of the partial area of the photosensitive area to nδ, where n is a natural number greater than or equal to 1 and less than or equal to 3.

In the foregoing solution, when the camera module is in the first imaging mode, full-pixel imaging with angular resolution of δ may be implemented in the photosensitive area, and in the second imaging mode, partial-pixel imaging with angular resolution of 2×δ or 3×δ may be implemented in the photosensitive area. In addition, when the camera module is switched between the two imaging modes, an effective focal length of the camera lens remains unchanged. To be specific, full-pixel 1× imaging and partial-pixel 2× or 3× imaging are simultaneously implemented by using one camera lens, and a main camera lens and a 2× or 3× telephoto lens are integrated into one. In addition, in the second imaging mode, the clear aperture of the variable aperture is changed, to switch the quantity F of apertures of the camera lens from F1 to F2, so that a camera lens that performs central-pixel imaging has a larger aperture and higher optical quality than a common 2× or 3× camera lens.

In some possible implementations, a diffraction limit of performing imaging by the camera lens in the full area of the photosensitive area is MTF1L at 100 lp/mm, and a diffraction limit of performing imaging by the camera lens in the partial area of the photosensitive area is MTF2L at 100 lp/mm, where MTF1L and MTF2L meet a condition 1≤|MTF2L/MTF1L|≤3.

In some possible implementations, a quantity N of lenses included in the camera lens meets a condition 5≤N≤9.

In some possible implementations, when the clear aperture of the variable aperture is the first clear aperture, the quantity F1 of apertures of the camera lens meets a condition 1.2≤F1≤8; and when the clear aperture of the variable aperture is the second clear aperture, the quantity F2 of apertures of the camera lens meets a condition 1.1≤F2≤4.

In some possible implementations, a half-image height of the camera lens is Y1 when the camera lens performs imaging in the full area of the photosensitive area, and a half-image height of the camera lens is Y2 when the camera lens performs imaging in the partial area of the photosensitive area, where Y1 and Y2 meet a condition 1≤|Y1/Y2|≤3.

In some possible implementations, a size of a cell output by the photosensitive element is P1 when the camera lens performs imaging in the full area of the photosensitive area, and a size of a cell output by the photosensitive element is P2 when the camera lens performs imaging in the partial area of the photosensitive area; and

when n=1, P1 and P2 meet a condition P1/P2=1;

when n=2, P1 and P2 meet a condition P1/P2=4; or

when n=3, P1 and P2 meet a condition P1/P2=9.

In some possible implementations, when the camera lens performs imaging in the full area of the photosensitive area, the half-image height Y1 of the camera lens and a total length (TTL) of the camera lens meet a condition 0.5≤|Y1/TTL|≤1.5.

In some possible implementations, a distance 1 between the variable aperture and the imaging surface of the camera lens and the total length (TTL) of the camera lens meet a condition 0.5≤|1/TTL|≤1.2. To be specific, the variable aperture may be disposed on an object side of a lens closest to a to-be-photographed object, or may be disposed between other two adjacent lenses.

In some possible implementations, pixels of an image output when the camera lens performs imaging with the angular resolution of nδ in the partial area of the photosensitive area are 8M to 32M pixels, thereby effectively ensuring imaging quality.

In some possible implementations, an entrance pupil diameter is EPD1 when the camera lens performs imaging in the full area of the photosensitive area, and an entrance pupil diameter is EPD2 when the camera lens performs imaging in the partial area of the photosensitive area, where EPD1 and EPD2 meet a condition 0.25≤|EPD1/EPD2|≤1.

In some possible implementations, a focal length EFL of the camera lens and the total length (TTL) of the camera lens meet a condition 0.5≤|EFL/TTL|≤1.2.

In some possible implementations, the camera lens may include eight lenses arranged along the direction from the object side to the image side, and the eight lenses are respectively a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, a seventh lens, and an eighth lens. The second lens has negative focal power. The fifth lens has positive focal power, and a focal length f5 of the fifth lens and the focal length EFL of the camera lens meet a condition 0.5≤|f5/EFL|≤1.2. The sixth lens has negative focal power, and a focal length f6 of the sixth lens and the focal length EFL of the camera lens meet a condition 1≤|f6/EFL|≤100. An area that is on an object-side surface of the eighth lens and that is close to an optical axis is a concave surface, and an area that is on an image-side surface and that is close to the optical axis is a concave surface.

In some possible implementations, the eight lenses each may be an aspheric lens, to eliminate an optical aberration and improve imaging quality. In this case, each lens may be made of a resin material, to reduce a manufacturing process difficulty and manufacturing costs of the camera lens.

When the camera lens includes eight lenses, the camera lens may have the following several specific structural forms:

The second lens has negative focal power, and a ratio of a focal length f2 of the second lens to the focal length EFL of the camera lens is |f2/EFL|=1.70. The fifth lens has positive focal power, and a ratio of the focal length f5 of the fifth lens to the focal length EFL of the camera lens is |f5/EFL|=1.01. The sixth lens has negative focal power, and a ratio of the focal length f6 of the sixth lens to the focal length EFL of the camera lens is |f6/EFL|=1.09. A ratio of the focal length EFL of the camera lens to the total length (TTL) of the camera lens is |EFL/TTL|=0.8307. When the clear aperture of the variable aperture is the first clear aperture, the quantity F1 of apertures of the camera lens is 2.074, or when the clear aperture of the variable aperture is the second clear aperture, the quantity F2 of apertures of the camera lens is 1.4758.

Alternatively, the second lens has negative focal power, and a ratio of a focal length f2 of the second lens to the focal length EFL of the camera lens is |f2/EFL|=1.71. The fifth lens has positive focal power, and a ratio of the focal length f5 of the fifth lens to the focal length EFL of the camera lens is |f5/EFL|=1.07. The sixth lens has negative focal power, and a ratio of the focal length f6 of the sixth lens to the focal length EFL of the camera lens is |f6/EFL|=1.14. A ratio of the focal length EFL of the camera lens to the total length (TTL) of the camera lens is |EFL/TTL|=0.830. When the clear aperture of the variable aperture is the first clear aperture, the quantity F1 of apertures of the camera lens is 2.075, or when the clear aperture of the variable aperture is the second clear aperture, the quantity F2 of apertures of the camera lens is 1.461.

Alternatively, the second lens has negative focal power, and a ratio of a focal length f2 of the second lens to the focal length EFL of the camera lens is |f2/EFL|=2.452. The fifth lens has positive focal power, and a ratio of the focal length f5 of the fifth lens to the focal length EFL of the camera lens is |f5/EFL|=1.49. The sixth lens has negative focal power, and a ratio of the focal length f6 of the sixth lens to the focal length EFL of the camera lens is |f6/EFL|=4.052. A ratio of the focal length EFL of the camera lens to the total length (TTL) of the camera lens is |EFL/TTL|=0.7269. When the clear aperture of the variable aperture is the first clear aperture, the quantity F1 of apertures of the camera lens is 1.99, or when the clear aperture of the variable aperture is the second clear aperture, the quantity F2 of apertures of the camera lens is 1.15.

Alternatively, the second lens has negative focal power, and a ratio of a focal length f2 of the second lens to the focal length EFL of the camera lens is |f2/EFL|=1.99. The fifth lens has positive focal power, and a ratio of the focal length f5 of the fifth lens to the focal length EFL of the camera lens is |f5/EFL|=1.14. The sixth lens has negative focal power, and a ratio of the focal length f6 of the sixth lens to the focal length EFL of the camera lens is |f6/EFL|=1.22. A ratio of the focal length EFL of the camera lens to the total length (TTL) of the camera lens is |EFL/TTL|=0.802. When the clear aperture of the variable aperture is the first clear aperture, the quantity F1 of apertures of the camera lens is 1.65, or when the clear aperture of the variable aperture is the second clear aperture, the quantity F2 of apertures of the camera lens is 1.58.

Alternatively, the second lens has negative focal power, and a ratio of a focal length f2 of the second lens to the focal length EFL of the camera lens is |f2/EFL|=2.42. The fifth lens has positive focal power, and a ratio of the focal length f5 of the fifth lens to the focal length EFL of the camera lens is |f5/EFL|=1.49. The sixth lens has negative focal power, and a ratio of the focal length f6 of the sixth lens to the focal length EFL of the camera lens is |f6/EFL|=4.01. A ratio of the focal length EFL of the camera lens to the total length (TTL) of the camera lens is |EFL/TTL|=0.731. When the clear aperture of the variable aperture is the first clear aperture, the quantity F1 of apertures of the camera lens is 3.97, or when the clear aperture of the variable aperture is the second clear aperture, the quantity F2 of apertures of the camera lens is 1.14.

In some possible implementations, the camera lens may include nine lenses arranged along the direction from the object side to the image side, and the nine lenses are respectively a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, a seventh lens, an eighth lens, and a ninth lens. The second lens has negative focal power, and a ratio of a focal length f2 of the second lens to the focal length EFL of the camera lens is |f2/EFL|=2.11. The fifth lens has positive focal power, and a ratio of a focal length f5 of the fifth lens to the focal length EFL of the camera lens is |f5/EFL|=1.37. The sixth lens has negative focal power, and a ratio of a focal length f6 of the sixth lens to the focal length EFL of the camera lens is |f6/EFL|=3.33. A ratio of the focal length EFL of the camera lens to the total length (TTL) of the camera lens is |EFL/TTL|=0.788. When the clear aperture of the variable aperture is a first clear aperture, the quantity F1 of apertures of the camera lens is 2.36, or when the clear aperture of the variable aperture is the second clear aperture, the quantity F2 of apertures of the camera lens is 1.42.

In some possible implementations, the camera lens may include six lenses arranged along the direction from the object side to the image side, and the six lenses are respectively a first lens, a second lens, a third lens, a fourth lens, a fifth lens, and a sixth lens. The second lens has negative focal power, and a ratio of a focal length f2 of the second lens to the focal length EFL of the camera lens is |f2/EFL|=5.23. The third lens has negative focal power, and a ratio of a focal length f3 of the third lens to the focal length EFL of the camera lens is |f3/EFL|=2.87. The fourth lens has positive focal power, and a ratio of a focal length f4 of the fourth lens to the focal length EFL of the camera lens is |f4/EFL|=12.04. A ratio of the focal length EFL of the camera lens to the total length (TTL) of the camera lens is |EFL/TTL|=0.81. When the clear aperture of the variable aperture is a first clear aperture, the quantity F1 of apertures of the camera lens is 1.79, or when the clear aperture of the variable aperture is the second clear aperture, the quantity F2 of apertures of the camera lens is 1.41.

In some possible implementations, the camera lens may include five lenses arranged along the direction from the object side to the image side, and the five lenses are respectively a first lens, a second lens, a third lens, a fourth lens, and a fifth lens. The second lens has negative focal power, and a ratio of a focal length f2 of the second lens to the focal length EFL of the camera lens is |f2/EFL|=1.97. The third lens has positive focal power, and a ratio of a focal length f3 of the third lens to the focal length EFL of the camera lens is |f3/EFL|=3.41. The fourth lens has positive focal power, and a ratio of a focal length f4 of the fourth lens to the focal length EFL of the camera lens is |f4/EFL|=1.20. A ratio of the focal length EFL of the camera lens to the total length (TTL) of the camera lens is |EFL/TTL|=0.74. When the clear aperture of the variable aperture is a first clear aperture, the quantity F1 of apertures of the camera lens is 1.94, or when the clear aperture of the variable aperture is the second clear aperture, the quantity F2 of apertures of the camera lens is 1.45.

In some possible implementations, the camera lens may include seven lenses arranged along the direction from the object side to the image side, and the seven lenses are respectively a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, and a seventh lens. The second lens has negative focal power, and a ratio of a focal length f2 of the second lens to the focal length EFL of the camera lens is |f2/EFL|=2.51. The fifth lens has negative focal power, and a ratio of a focal length f5 of the fifth lens to the focal length EFL of the camera lens is |f5/EFL|=1.81. The sixth lens has negative focal power, and a ratio of a focal length f6 of the sixth lens to the focal length EFL of the camera lens is |f6/EFL|=2.31. A ratio of the focal length EFL of the camera lens to the total length (TTL) of the camera lens is |EFL/TTL|=0.814. When the clear aperture of the variable aperture is a first clear aperture, the quantity F1 of apertures of the camera lens is 2.31, or when the clear aperture of the variable aperture is the second clear aperture, the quantity F2 of apertures of the camera lens is 1.59.

According to a second aspect, this disclosure further provides an electronic device. The electronic device includes a housing and the camera module in any one of the foregoing possible implementations. The camera module may be specifically disposed inside the housing. The camera module of the electronic device may simultaneously implement full-pixel 1× imaging and central-pixel 2× or 3× imaging by using one camera lens, so that the camera module occupies less space in the electronic device and appearance quality of the electronic device is improved.

BRIEF DESCRIPTION OF DRAWINGS

FIG. 1 is a schematic diagram of a structure of a camera module according to an embodiment of this disclosure;

FIG. 2a is a schematic diagram of a structure of a camera module in FIG. 1 in a first imaging mode;

FIG. 2b is a schematic diagram of a structure of a camera module in FIG. 1 in a second imaging mode;

FIG. 3a is a schematic diagram of a structure of a first specific camera module in a first imaging mode;

FIG. 3b is a schematic diagram of a structure of a first specific camera module in a second imaging mode;

FIG. 4a is a curve diagram of an axial chromatic aberration of a camera module in FIG. 3a;

FIG. 4b is a curve diagram of an axial chromatic aberration of a camera module in FIG. 3b;

FIG. 5a is a curve diagram of a lateral chromatic aberration of a camera module in FIG. 3a;

FIG. 5b is a curve diagram of a lateral chromatic aberration of a camera module in FIG. 3b;

FIG. 6a is a curve diagram of optical distortion of a camera module in FIG. 3a;

FIG. 6b is a curve diagram of optical distortion of a camera module in FIG. 3b;

FIG. 7a is a schematic diagram of a structure of a second specific camera module in a first imaging mode;

FIG. 7b is a schematic diagram of a structure of a second specific camera module in a second imaging mode;

FIG. 8a is a curve diagram of an axial chromatic aberration of a camera module in FIG. 7a;

FIG. 8b is a curve diagram of an axial chromatic aberration of a camera module in FIG. 7b;

FIG. 9a is a curve diagram of a lateral chromatic aberration of a camera module in FIG. 7a;

FIG. 9b is a curve diagram of a lateral chromatic aberration of a camera module in FIG. 7b;

FIG. 10a is a curve diagram of optical distortion of a camera module in FIG. 7a;

FIG. 10b is a curve diagram of optical distortion of a camera module in FIG. 7b;

FIG. 11a is a schematic diagram of a structure of a third specific camera module in a first imaging mode;

FIG. 11b is a schematic diagram of a structure of a third specific camera module in a second imaging mode;

FIG. 12a is a curve diagram of an axial chromatic aberration of a camera module in FIG. 11a;

FIG. 12b is a curve diagram of an axial chromatic aberration of a camera module in FIG. 11b;

FIG. 13a is a curve diagram of a lateral chromatic aberration of a camera module in FIG. 11a;

FIG. 13b is a curve diagram of a lateral chromatic aberration of a camera module in FIG. 11b;

FIG. 14a is a curve diagram of optical distortion of a camera module in FIG. 11a;

FIG. 14b is a curve diagram of optical distortion of a camera module in FIG. 11b;

FIG. 15a is a schematic diagram of a structure of a fourth specific camera module in a first imaging mode;

FIG. 15b is a schematic diagram of a structure of a fourth specific camera module in a second imaging mode;

FIG. 16a is a curve diagram of an axial chromatic aberration of a camera module in FIG. 15a;

FIG. 16b is a curve diagram of an axial chromatic aberration of a camera module in FIG. 15b;

FIG. 17a is a curve diagram of a lateral chromatic aberration of a camera module in FIG. 15a;

FIG. 17b is a curve diagram of a lateral chromatic aberration of a camera module in FIG. 15b;

FIG. 18a is a curve diagram of optical distortion of a camera module in FIG. 15a;

FIG. 18b is a curve diagram of optical distortion of a camera module in FIG. 15b;

FIG. 19a is a schematic diagram of a structure of a fifth specific camera module in a first imaging mode;

FIG. 19b is a schematic diagram of a structure of a fifth specific camera module in a second imaging mode;

FIG. 20a is a curve diagram of an axial chromatic aberration of a camera module in FIG. 19a;

FIG. 20b is a curve diagram of an axial chromatic aberration of a camera module in FIG. 19b;

FIG. 21a is a curve diagram of a lateral chromatic aberration of a camera module in FIG. 19a;

FIG. 21b is a curve diagram of a lateral chromatic aberration of a camera module in FIG. 19b;

FIG. 22a is a curve diagram of optical distortion of a camera module in FIG. 19a;

FIG. 22b is a curve diagram of optical distortion of a camera module in FIG. 19b;

FIG. 23a is a schematic diagram of a structure of a sixth specific camera module in a first imaging mode;

FIG. 23b is a schematic diagram of a structure of a sixth specific camera module in a second imaging mode;

FIG. 24a is a curve diagram of an axial chromatic aberration of a camera module in FIG. 23a;

FIG. 24b is a curve diagram of an axial chromatic aberration of a camera module in FIG. 23b;

FIG. 25a is a curve diagram of a lateral chromatic aberration of a camera module in FIG. 23a;

FIG. 25b is a curve diagram of a lateral chromatic aberration of a camera module in FIG. 23b;

FIG. 26a is a curve diagram of optical distortion of a camera module in FIG. 23a;

FIG. 26b is a curve diagram of optical distortion of a camera module in FIG. 23b;

FIG. 27a is a schematic diagram of a structure of a seventh specific camera module in a first imaging mode;

FIG. 27b is a schematic diagram of a structure of a seventh specific camera module in a second imaging mode;

FIG. 28a is a curve diagram of an axial chromatic aberration of a camera module in FIG. 27a;

FIG. 28b is a curve diagram of an axial chromatic aberration of a camera module in FIG. 27b;

FIG. 29a is a curve diagram of a lateral chromatic aberration of a camera module in FIG. 27a;

FIG. 29b is a curve diagram of a lateral chromatic aberration of a camera module in FIG. 27b;

FIG. 30a is a curve diagram of optical distortion of a camera module in FIG. 27a;

FIG. 30b is a curve diagram of optical distortion of a camera module in FIG. 27b;

FIG. 31a is a schematic diagram of a structure of an eighth specific camera module in a first imaging mode;

FIG. 31b is a schematic diagram of a structure of an eighth specific camera module in a second imaging mode;

FIG. 32a is a curve diagram of an axial chromatic aberration of a camera module in FIG. 31a;

FIG. 32b is a curve diagram of an axial chromatic aberration of a camera module in FIG. 31b;

FIG. 33a is a curve diagram of a lateral chromatic aberration of a camera module in FIG. 31a;

FIG. 33b is a curve diagram of a lateral chromatic aberration of a camera module in FIG. 31b;

FIG. 34a is a curve diagram of optical distortion of a camera module in FIG. 31a;

FIG. 34b is a curve diagram of optical distortion of a camera module in FIG. 31b;

FIG. 35a is a schematic diagram of a structure of a ninth specific camera module in a first imaging mode;

FIG. 35b is a schematic diagram of a structure of a ninth specific camera module in a second imaging mode;

FIG. 36a is a curve diagram of an axial chromatic aberration of a camera module in FIG. 35a;

FIG. 36b is a curve diagram of an axial chromatic aberration of a camera module in FIG. 35b;

FIG. 37a is a curve diagram of a lateral chromatic aberration of a camera module in FIG. 35a;

FIG. 37b is a curve diagram of a lateral chromatic aberration of a camera module in FIG. 35b;

FIG. 38a is a curve diagram of optical distortion of a camera module in FIG. 35a;

FIG. 38b is a curve diagram of optical distortion of a camera module in FIG. 35b; and

FIG. 39 is a schematic diagram of a structure of an electronic device according to an embodiment of this disclosure.

DESCRIPTION OF EMBODIMENTS

To facilitate understanding of a camera module provided in embodiments of this disclosure, related English abbreviations and noun concepts used in this disclosure are first briefly described:

F-number (F #) is a quantity F of apertures, and is a relative value obtained by dividing a focal length of a camera lens by an entrance pupil diameter of the camera lens (a reciprocal of a relative aperture). A smaller value of a quantity F of apertures leads to a larger quantity of incident light rays in a same unit time, and a larger value of a quantity F of apertures leads to a smaller depth of field. Background content of photographing is blurred, similar to an effect of a telephoto lens.

An effect focal length (EFL) is an effective focal length of a camera lens.

A field of view (FOV) is a field of view.

A total track length (TTL) is a total length of a camera lens, and is specifically a distance between an imaging surface and a surface that is of the camera lens and that is closest to a to-be-photographed object.

A back focal length (BFL) is a back focal length of a camera lens, and is defined as a distance between a photosensitive element and a lens that is of the camera lens and that is closest to an imaging surface.

A modulation transfer function (MTF) is a modulation transfer function.

An entrance pupil diameter (EPD) is an entrance pupil diameter.

δ is angular resolution, and is defined as a reciprocal of a minimum angle that can be distinguished by an optical system. A minimum distinguished angle is equal to a result obtained by dividing a side length of a cell by a focal length of a camera lens.

Focal power is equal to a difference between an image-side beam convergence degree and an object-side beam convergence degree. A lens with positive focal power has a positive focal length and may converge light rays, and a lens with negative focal power has a negative focal length and may diverge light rays.

An object side may be understood as a side close to a to-be-photographed object, and an image side may be understood as a side close to an imaging surface.

An object-side surface of a lens is a surface that is of the lens and that is close to a to-be-photographed object, and an image-side surface of the lens is a surface that is of the lens and that is close to an imaging surface.

An area close to an optical axis may be understood as an area that is on a surface of a lens and that is close to the optical axis.

To facilitate understanding of a camera module provided in the embodiments of this disclosure, an application scenario of the camera module is first described. The camera module provided in the embodiments of this disclosure may be applied to an electronic device, so that the electronic device implements functions such as image acquisition and video capture. The electronic device may be a common terminal such as a mobile phone, a tablet computer, or a notebook computer in the conventional technology. The mobile phone is used as an example. Currently, in a zoom manner commonly used for many models of mobile phones, a plurality of camera lenses with different focal lengths are mounted, and cooperate with algorithm-based digital zoom, to implement hybrid optical zoom. In this zoom manner, a zoom range of the camera module can be extended. However, a size of the camera module is excessively large due to an increase in a quantity of camera lenses. Consequently, more body space is occupied, and appearance quality of the mobile phone is affected.

Based on this, the embodiments of this disclosure provide a camera module and an electronic device to which the camera module is applied. The camera module may use a single camera lens, to integrate a main camera lens and a 2× or 3× telephoto lens into one. In addition, a variable aperture can be further used, so that there is a larger aperture during 2× or 3× imaging, to improve imaging quality.

FIG. 1 is a schematic diagram of a structure of a camera module according to an embodiment of this disclosure. The camera module may include a camera lens L, a variable aperture ST, a photosensitive element E1, and an optical filter G1. The camera lens L may include a plurality of lenses having focal power, and the lenses may be specifically arranged sequentially along a direction from an object side to an image side. The variable aperture ST is disposed on an object side of one lens, and a clear aperture of the variable aperture ST may be changed to adjust an aperture value of the camera lens L. During specific implementation, the variable aperture ST may be located on an object side of a lens closest to a to-be-photographed object, or may be located between any two adjacent lenses. This is not specifically limited in this disclosure. For example, a distance 1 between the variable aperture ST and an imaging surface S1 of the camera lens L and a total length (TTL) of the camera lens meet a condition 0.5≤|1/TTL|≤1.2. The optical filter G1 is disposed on an image side of a lens closest to the imaging surface S1, that is, between the lens and the imaging surface S1, and may be used to filter infrared light in a light ray, to improve effective resolution and color reproducibility of the camera lens L, so that imaging is clearer and more stable. The photosensitive element is disposed on the imaging surface S1 of the camera lens L, and may be configured to perform optical-to-electrical conversion and A/D (analog/digital, analog signal/digital signal) conversion on an optical signal of an incident light ray, to transmit, by using a base board, an electrical signal obtained through conversion to a graphics processing unit or a central processing unit of an electronic device, thereby implementing functions such as obtaining, converting, and processing an optical image.

With continued reference to FIG. 1, a quantity N of lenses included in the camera lens L in this embodiment of this disclosure meets a condition 5≤N≤9. For example, N may be 5, 6, 7, 8, or 9. These lenses each may be an aspheric lens, to eliminate an optical aberration, and improve imaging quality. In this case, each lens may be made of a resin material, to reduce a manufacturing process difficulty and manufacturing costs of the camera lens. Certainly, in another embodiment of this disclosure, some lens close to the to-be-photographed object may alternatively be made of a glass material, and some lens close to the imaging surface may be made of a resin material. This is not specifically limited in this disclosure. FIG. 1 specifically shows a structure of a camera module for which an eight-lens camera lens is used. Along the direction from the object side to the image side, the camera lens L sequentially includes a first lens L1, a second lens L2, a third lens L3, a fourth lens L4, a fifth lens L5, a sixth lens L6, a seventh lens L7, and an eighth lens L8. The second lens L2 has negative focal power. The fifth lens L5 has positive focal power, and a focal length f5 of the fifth lens L5 and a focal length EFL of the camera lens meet a condition 0.5≤|f5/EFL|≤1.2. The sixth lens L6 has negative focal power, and a focal length f6 of the sixth lens L6 and the focal length EFL of the camera lens meet a condition 1≤|f6/EFL|≤100. An area that is on an object-side surface of the eighth lens L8 and that is close to an optical axis is a concave surface, and an area that is on an image-side surface and that is close to the optical axis is a concave surface.

In addition, the variable aperture ST may be of a variable aperture structure in the conventional technology, and a principle of adjusting the clear aperture of the variable aperture ST may also be the same as that in the conventional technology. Details are not described herein. In this embodiment of this disclosure, the clear aperture of the variable aperture ST may be adjusted to a first clear aperture and a second clear aperture. When the clear aperture of the variable aperture ST is the first clear aperture, a quantity F of apertures of the camera lens L may be adjusted to F1 accordingly, or when the clear aperture of the variable aperture ST is the second clear aperture, a quantity F of apertures of the camera lens L may be adjusted to F2 accordingly. Herein, F1 and F2 meet a condition F1≥F2. For example, F1 meets a condition 1.2≤F1≤8, and F2 meets a condition 1.1≤F2≤4.

The camera module provided in this embodiment of this disclosure may include two imaging modes. Referring to both FIG. 2a and FIG. 2b, FIG. 2a is a schematic diagram of a structure of the camera module in a first imaging mode, and FIG. 2b is a schematic diagram of a structure of the camera module in a second imaging mode. When the camera module is in a first imaging mode, the clear aperture of the variable aperture may be adjusted to adjust the quantity F of apertures of the camera lens to F1. The photosensitive element is configured to: enable the camera lens L to perform imaging in a full area of a photosensitive area E1a of the photosensitive element E1, and adjust angular resolution of the full area of the photosensitive area to δ; or when the camera module is in a second imaging mode, the clear aperture of the variable aperture may be adjusted to adjust the quantity F of apertures of the camera lens to F2. The photosensitive element is configured to: enable the camera lens L to perform imaging in a partial area of a photosensitive area E1a of the photosensitive element E1, and adjust angular resolution of the partial area of the photosensitive area to nδ. It should be noted that, in the first imaging mode, it may be specifically understood that imaging in the full area of the photosensitive area is performing imaging by using all pixels in the photosensitive area, namely, full-pixel imaging; and in the second imaging mode, it may be specifically understood that imaging in the partial area of the photosensitive area is performing imaging by using pixels in the partial area of the photosensitive area. The partial area may be a central area or any other area of the photosensitive area. This is not specifically limited in this disclosure. When the camera lens L performs imaging in the partial area of the photosensitive area, it is equivalent to reducing a field of view of the camera lens. Therefore, a telephoto-like photographing effect can be achieved.

In the foregoing embodiment, a value of n may be 1, 2, or 3, and a value change of the angular resolution may be specifically implemented by controlling a size of a cell output by the photosensitive element. For example, a size of a cell output by the photosensitive element in the first imaging mode is P1, and a size of a cell output by the photosensitive element in the second imaging mode is P2. When P1 and P2 meet a condition P1/P2=1, the camera lens may perform imaging with same angular resolution in the two imaging modes, where n=1. When P1 and P2 meet a condition P1/P2=4, the camera lens may implement imaging with angular resolution of 2×δ in the second imaging mode. When P1 and P2 meet a condition P1/P2=9, the camera lens may implement imaging with angular resolution of 3×δ in the second imaging mode. It should be noted that a specific manner of controlling the size of the cell output by the photosensitive element in this embodiment is the same as that in the conventional technology. Details are not described herein.

In a specific embodiment of this disclosure, the camera module may output an image of 8M to 32M pixels in the second imaging mode, thereby effectively ensuring imaging quality.

When the foregoing structure is used, a half-image height of the camera lens is Y1 when the camera module is in the first imaging mode, and a half-image height of the camera lens is Y2 when the camera module is in the second imaging mode, where Y1 and Y2 meet a condition 1≤|Y1/Y2|≤3; and an entrance pupil diameter of the camera lens is EPD1 when the camera module is in the first imaging mode, and an entrance pupil diameter of the camera lens is EPD2 when the camera module is in the second imaging mode, where EPD1 and EPD2 meet a condition 0.25≤|EPD1/EPD2|≤1.

In addition, the focal length EFL of the camera lens and the total length (TTL) of the camera lens may meet a condition 0.5≤|EFL/TTL|≤1.2. The half-image height Y1 that is of the camera lens and that exists when the camera module is in the first imaging mode and the total length (TTL) of the camera lens may meet a condition 0.5≤|Y1/TTL|≤1.5.

It can be learned from the foregoing description that, when the camera module provided in this embodiment of this disclosure is in the first imaging mode, full-pixel imaging with angular resolution of δ may be implemented in the photosensitive area, and in the second imaging mode, central-pixel imaging with angular resolution of 2×δ or 3×δ may be implemented in the photosensitive area. In addition, when the camera module is switched between the two imaging modes, an effective focal length of the camera lens remains unchanged. To be specific, full-pixel 1× imaging and central-pixel 2× or 3× imaging are simultaneously implemented by using one camera lens, and a main camera lens and a 2× or 3× telephoto lens are integrated into one. In addition, in the second imaging mode, the clear aperture of the variable aperture is changed, to switch the quantity F of apertures of the camera lens from F1 to F2, so that a camera lens that performs central-pixel imaging has a larger aperture and higher optical quality than a common 2× or 3× camera lens. A diffraction limit MTF2L of central-pixel imaging at 100 lp/mm and a diffraction limit MTF1L of full-pixel imaging at 100 lp/mm may meet a condition 1≤|MTF2L/MTF1L|≤3.

To facilitate understanding of an effect of a camera lens provided in this embodiment of this disclosure, the following describes an imaging effect of the camera module in detail with reference to a specific embodiment.

FIG. 3a and FIG. 3b show a first specific camera module. FIG. 3a is a schematic diagram of a structure of the camera module in a first imaging mode. FIG. 3b is a schematic diagram of a structure of the camera module in a second imaging mode. A camera lens of the camera module includes eight lenses having focal power, and the eight lenses are sequentially a first lens L1, a second lens L2, a third lens L3, a fourth lens L4, a fifth lens L5, a sixth lens L6, a seventh lens L7, and an eighth lens L8 from an object side. A variable aperture ST may be specifically located on an object side of the first lens L1, and an optical filter G1 may be located on an image side of the eighth lens L8.

In this embodiment of this disclosure, each lens of the camera lens may be an aspheric lens. In other words, the camera lens includes 16 aspheric surfaces in total. Referring to both Table 1a and Table 1b, Table 1a shows a curvature radius, a thickness, a refractive index, and an Abbe number of each lens of the camera lens, and Table 1b shows an aspheric coefficient of each lens.

TABLE 1a

Curvature

Refractive
Abbe

Description
radius
Thickness
index
number

ST
Variable
Infinite
d0
−0.067
—
—
—
—

aperture

R1
First
2.921
d1
0.992
n1
1.54
v1
56.0

R2
lens
8.009
a1
0.058

R3
Second
9.830
d2
0.258
n2
1.68
v2
18.4

R4
lens
4.106
a2
0.188

R5
Third
3.069
d3
0.620
n3
1.54
v3
56.0

R6
lens
5.447
a3
0.269

R7
Fourth
4.760
d4
0.306
n4
1.68
v4
18.4

R8
lens
5.799
a4
0.588

R9
Fifth
−14.906
d5
0.510
n5
1.54
v5
56.0

R10
lens
−2.836
a5
0.202

R11
Sixth
37.864
d6
0.405
n6
1.64
v6
23.5

R12
lens
3.898
a6
0.625

R13
Seventh
4.815
d7
0.562
n7
1.68
v7
18.4

R14
lens
6.973
a7
0.758

R15
Eighth
−3.402
d8
0.502
n8
1.54
v8
56.0

R16
lens
24.685
a8
0.310

R17
Optical
Infinite
d9
0.225
n9
1.52
v9
64.2

filter

TABLE 1b

Type
K
R
A2
A3
A4
A5
A6
A7

R1
Extended
0.001
2.152
−3.30E−02
−4.45E−01
2.11E+00
−6.41E+00
9.52E+00
−5.64E+00

aspheric surface

R2
Extended
−0.281
2.099
3.49E−01
−6.92E+00
4.16E+01
−1.51E+02
3.38E+02
−4.66E+02

aspheric surface

R3
Extended
−0.891
2.074
3.03E−02
−4.45E+00
2.89E+01
−1.04E+02
2.32E+02
−3.22E+02

aspheric surface

R4
Extended
−0.044
1.998
−4.90E−01
4.89E−01
−9.71E−01
4.45E+00
−1.23E+01
2.06E+01

aspheric surface

R5
Extended
0.019
1.953
−3.50E−01
2.89E−01
−1.29E−01
−3.89E+00
1.21E+01
−1.45E+01

aspheric surface

R6
Extended
0.155
1.873
−2.75E−01
7.62E−01
−1.56E+00
−4.85E−01
4.18E+00
−4.41E+00

aspheric surface

R7
Extended
0.101
1.790
−7.50E−01
1.57E+00
−4.61E+00
1.09E+01
−1.89E+01
2.21E+01

aspheric surface

R8
Extended
1.278
1.715
−5.82E−01
1.34E+00
−5.52E+00
1.70E+01
−3.44E+01
4.48E+01

aspheric surface

R9
Extended
3.518
1.920
1.26E−01
4.37E−01
−2.20E+00
−6.15E+00
4.06E+01
−8.88E+01

aspheric surface

R10
Extended
0.014
2.190
3.03E+00
−9.62E+00
2.32E+01
−5.86E+01
1.22E+02
−1.71E+02

aspheric surface

R11
Extended
−81.111
2.402
2.40E+00
−1.93E+01
7.63E+01
−2.20E+02
4.12E+02
−4.60E+02

aspheric surface

R12
Extended
−0.108
2.965
−3.35E+00
−4.41E+00
5.25E+01
−2.61E+02
7.61E+02
−1.28E+03

aspheric surface

R13
Extended
−0.165
3.106
−2.23E+00
−1.27E+01
1.69E+01
1.43E+02
−6.01E+02
1.01E+03

aspheric surface

R14
Extended
0.568
3.468
−7.92E−02
−3.81E+01
1.57E+02
−2.80E+02
1.68E+02
1.62E+02

aspheric surface

R15
Extended
−0.978
4.295
−3.14E+00
1.41E+01
−1.32E+02
7.79E+02
−2.15E+03
3.20E+03

aspheric surface

R16
Extended
3.190
4.500
−1.40E+01
7.98E+01
−2.75E+02
4.93E+02
−3.80E+02
−1.19E+01

aspheric surface

R1
Type
K
R
A8
A9
A10
A11
A12
A13

R2
Extended
0.001
2.152
−2.92E+00
6.24E+00
−3.14E+00
4.81E−01
0.00E+00
0.00E+00

aspheric surface

R3
Extended
−0.281
2.099
3.88E+02
−1.78E+02
3.49E+01
0.00E+00
0.00E+00
0.00E+00

aspheric surface

R4
Extended
−0.891
2.074
2.69E+02
−1.25E+02
2.48E+01
0.00E+00
0.00E+00
0.00E+00

aspheric surface

R5
Extended
−0.044
1.998
−2.00E+01
1.00E+01
−2.02E+00
0.00E+00
0.00E+00
0.00E+00

aspheric surface

R6
Extended
0.019
1.953
8.00E+00
−1.62E+00
−1.18E−01
0.00E+00
0.00E+00
0.00E+00

aspheric surface

R7
Extended
0.155
1.873
3.15E+00
−2.53E+00
9.99E−01
0.00E+00
0.00E+00
0.00E+00

aspheric surface

R8
Extended
0.101
1.790
−1.45E+01
3.97E+00
−4.39E−02
0.00E+00
0.00E+00
0.00E+00

aspheric surface

R9
Extended
1.278
1.715
−3.54E+01
1.53E+01
−2.76E+00
0.00E+00
0.00E+00
0.00E+00

aspheric surface

R10
Extended
3.518
1.920
1.01E+02
−5.82E+01
1.30E+01
4.52E−01
0.00E+00
0.00E+00

aspheric surface

R11
Extended
0.014
2.190
1.45E+02
−6.36E+01
8.31E+00
2.75E−01
9.79E−01
0.00E+00

aspheric surface

R12
Extended
−81.111
2.402
2.82E+02
−7.81E+01
5.31E+00
6.56E−01
−9.08E−01
0.00E+00

aspheric surface

R13
Extended
−0.108
2.965
1.22E+03
−6.09E+02
1.18E+02
3.14E+00
4.33E−01
0.00E+00

aspheric surface

R14
Extended
−0.165
3.106
−8.57E+02
3.51E+02
−6.05E+01
1.33E+01
−6.09E+00
0.00E+00

aspheric surface

R15
Extended
0.568
3.468
−3.17E+02
1.72E+02
−1.33E+01
−1.69E+01
6.06E+00
−1.70E+00

aspheric surface

R16
Extended
−0.978
4.295
−2.67E+03
1.17E+03
−1.86E+02
−1.76E+01
5.35E+00
−1.82E+00

aspheric surface

Extended
3.190
4.500
1.01E+02
1.31E+02
−1.83E+02
5.69E+01
0.00E+00
0.00E+00

aspheric surface

In the 16 aspheric surfaces of the camera lens shown in Table 1b, surface types z of all the extended aspheric surfaces may be defined by using but not limited to the following aspheric surface formula:

$z = \frac{{cr}^{2}}{1 + \sqrt{1 - {Kc}^{2} r^{2}}} + A_{2} r^{4} + A_{3} r^{6} + A_{4} r^{8} + A_{5} r^{10} + A_{6} r^{12} + A_{7} r^{14} + A_{8} r^{16} + A_{9} r^{18} + A_{10} r^{20} + A_{11} r^{22} + A_{12} r^{24} + A_{13} r^{26}$

Herein, z represents a rise of an aspheric surface, r represents a normalized radial coordinate of the aspheric surface, r is equal to a result obtained by dividing an actual radial coordinate of the aspheric surface by a normalized radius R, c represents spherical curvature of a vertex of the aspheric surface, K represents a quadric surface constant, and A2, A3, A4, A5, A6, A7, A8, A9, A10, A11, A12, and A13 represent aspheric coefficients.

In this embodiment of this disclosure, the second lens L2 has negative focal power, and a ratio of a focal length f2 of the second lens L2 to a focal length EFL of the camera lens is |f2/EFL|=1.70. The fifth lens L5 has positive focal power, and a ratio of a focal length f5 of the fifth lens to the focal length EFL of the camera lens is |f5/EFL|=1.01. The sixth lens L6 has negative focal power, and a ratio of a focal length f6 of the sixth lens to the focal length EFL of the camera lens is |f6/EFL|=1.09. A ratio of the focal length EFL of the camera lens to a total length (TTL) of the camera lens is |EFL/TTL|=0.8307.

With continued reference to FIG. 3a, when the camera module is in the first imaging mode, the camera lens performs imaging in a full area of a photosensitive area, a half-image height Y1 of the camera lens is 5.8 mm, an entrance pupil diameter EPD1 is 3.0467 mm, and a quantity F of apertures is 2.074. Referring to FIG. 3b, when the camera module is switched to the second imaging mode, the camera lens performs imaging in a partial area of a photosensitive area, a half-image height Y2 of the camera lens is 2.86 mm, an entrance pupil diameter EPD2 is 4.31 mm, and a quantity F of apertures is 1.4758. A ratio of EPD1 to EPD2 is |EPD1/EPD2|=0.708, and a ratio of Y1 to Y2 is |Y1/Y2|=2.028. In addition, when a camera module is in the first imaging mode, a ratio of the half-image height Y1 of the camera lens to the total length (TTL) of the camera lens is |Y1/TTL|=0.77, and a ratio of the entrance pupil diameter EPD1 to the total length (TTL) of the camera lens is |EPD1/TTL|=0.4056. For each basic parameter of the camera lens, refer to Table 2.

TABLE 2

Object distance
Infinite far

Focal length EFL (mm)
6.24

First
Value of F
2.07

imaging
Half-image height Y1 (mm)
5.80

mode
Half FOV (°)
41.969

Second
Value of F
1.48

imaging
Half-image height Y2 (mm)
2.86

mode
Half FOV (°)
23.938

BFL (mm)
0.667

TTL (mm)
7.51

Designed wavelength
650 nm, 610 nm, 555 nm,

510 nm, 470 nm

The camera module shown in FIG. 3a and FIG. 3b is simulated. A simulation result of the camera module is described in detail below with reference to accompanying drawings.

FIG. 4a is a curve diagram of an axial chromatic aberration of a camera module in a first imaging mode. Simulation results of a depth of focus location of colorful light rays on wavelengths of 650 nm, 610 nm, 555 nm, 510 nm, and 470 nm are separately shown in the figure. It can be learned that the axial chromatic aberration of a camera lens in the first imaging mode is controlled to fall within a very small range.

FIG. 4b is a curve diagram of an axial chromatic aberration of a camera module in a second imaging mode. Simulation results of a depth of focus location of colorful light rays on wavelengths of 650 nm, 610 nm, 555 nm, 510 nm, and 470 nm are separately shown in the figure. It can be learned that the axial chromatic aberration of a camera lens in the second imaging mode is controlled to fall within a very small range.

FIG. 5a is a curve diagram of a lateral chromatic aberration of a camera module in a first imaging mode. In the figure, five solid curves are respectively colorful light rays on wavelengths of 650 nm, 610 nm, 555 nm, 510 nm, and 470 nm, and dotted lines indicate that a diffraction limit range is from −1.4 μm to 1.4 μm, and it can be learned that all lateral chromatic aberrations of the five light rays fall within the diffraction limit range.

FIG. 5b is a curve diagram of a lateral chromatic aberration of a camera module in a second imaging mode. In the figure, five solid curves are respectively colorful light rays on wavelengths of 650 nm, 610 nm, 555 nm, 510 nm, and 470 nm, and dotted lines indicate that a diffraction limit range is from −1.0 μm to 1.0 μm, and it can be learned that all lateral chromatic aberrations of the five light rays fall within the diffraction limit range.

FIG. 6a is a curve diagram of optical distortion of a camera module in a first imaging mode, showing a difference between imaging deformation and an ideal shape. In the figure, five solid curves are respectively colorful light rays on wavelengths of 650 nm, 610 nm, 555 nm, 510 nm, and 470 nm. It can be learned that, in this mode, the optical distortion may be controlled to fall within a range less than 2%.

FIG. 6b is a curve diagram of optical distortion of a camera module in a second imaging mode, showing a difference between imaging deformation and an ideal shape. In the figure, five solid curves are respectively colorful light rays on wavelengths of 650 nm, 610 nm, 555 nm, 510 nm, and 470 nm. It can be learned that, in this mode, the optical distortion may be controlled to fall within a range less than 2%.

FIG. 7a and FIG. 7b show a second specific camera module. FIG. 7a is a schematic diagram of a structure of the camera module in a first imaging mode. FIG. 7b is a schematic diagram of a structure of the camera module in a second imaging mode. A camera lens of the camera module includes eight lenses having focal power, and the eight lenses are sequentially a first lens L1, a second lens L2, a third lens L3, a fourth lens L4, a fifth lens L5, a sixth lens L6, a seventh lens L7, and an eighth lens L8 from an object side. A variable aperture ST may be specifically located on an object side of the first lens L1, and an optical filter G1 may be located on an image side of the eighth lens L8.

In this embodiment of this disclosure, each lens of the camera lens may be an aspheric lens. In other words, the camera lens includes 16 aspheric surfaces in total. Referring to both Table 3a and Table 3b, Table 3a shows a curvature radius, a thickness, a refractive index, and an Abbe number of each lens of the camera lens, and Table 3b shows an aspheric coefficient of each lens.

TABLE 3a

Curvature

Refractive
Abbe

Description
radius
Thickness
index
number

ST
Variable
Infinite
d0
−0.039
—
—
—
—

aperture

R1
First
2.908
d1
0.983
n1
1.54
v1
56.0

R2
lens
7.801
a1
0.065

R3
Second
9.996
d2
0.265
n2
1.67
v2
19.2

R4
lens
4.144
a2
0.186

R5
Third
3.091
d3
0.635
n3
1.54
v3
56.0

R6
lens
5.663
a3
0.269

R7
Fourth
5.018
d4
0.313
n4
1.66
v4
20.4

R8
lens
6.307
a4
0.580

R9
Fifth
−13.762
d5
0.491
n5
1.54
v5
56.0

R10
lens
−2.918
a5
0.197

R11
Sixth
25.721
d6
0.407
n6
1.64
v6
23.5

R12
lens
3.852
a6
0.624

R13
Seventh
4.824
d7
0.566
n7
1.66
v7
20.4

R14
lens
6.929
a7
0.749

R15
Eighth
−3.428
d8
0.502
n8
1.54
v8
56.0

R16
lens
19.767
a8
0.301

R17
Optical
Infinite
d9
0.237
n9
1.52
v9
64.2

R18
filter
Infinite
a9
0.124

TABLE 3b

Type
K
R
A2
A3
A4
A5
A6
A7

R1
Extended
0.000
2.172
−8.31E−02
2.50E−01
−2.35E+00
8.86E+00
−2.08E+01
2.97E+01

aspheric surface

R2
Extended
−0.185
2.120
2.75E−01
−5.76E+00
3.35E+01
−1.21E+02
2.74E+02
−3.86E+02

aspheric surface

R3
Extended
−1.051
2.098
3.72E−02
−4.85E+00
3.22E+01
−1.19E+02
2.70E+02
−3.80E+02

aspheric surface

R4
Extended
−0.053
2.027
−4.36E−01
−1.01E+00
1.02E+01
−3.88E+01
8.66E+01
−1.17E+02

aspheric surface

R5
Extended
0.022
1.976
−3.90E−01
7.77E−01
−4.16E+00
1.42E+01
−3.58E+01
6.21E+01

aspheric surface

R6
Extended
0.137
1.900
−2.97E−01
1.21E+00
−5.87E+00
1.97E+01
−4.98E+01
8.16E+01

aspheric surface

R7
Extended
0.083
1.818
−8.20E−01
2.13E+00
−8.41E+00
2.60E+01
−5.52E+01
7.52E+01

aspheric surface

R8
Extended
1.298
1.715
−5.70E−01
1.15E+00
−4.12E+00
1.14E+01
−2.07E+01
2.41E+01

aspheric surface

R9
Extended
−0.275
1.874
7.70E−02
1.03E+00
−6.24E+00
1.25E+01
−1.18E+01
1.08E+00

aspheric surface

R10
Extended
0.025
2.106
2.56E+00
−7.31E+00
1.59E+01
−3.83E+01
7.79E+01
−1.05E+02

aspheric surface

R11
Extended
−69.062
2.317
2.09E+00
−1.59E+01
5.99E+01
−1.63E+02
2.84E+02
−2.98E+02

aspheric surface

R12
Extended
−0.119
2.909
−3.08E+00
−4.89E+00
5.36E+01
−2.53E+02
6.98E+02
−1.11E+03

aspheric surface

R13
Extended
−0.107
3.047
−2.08E+00
−1.12E+01
1.13E+01
1.38E+02
−5.36E+02
8.72E+02

aspheric surface

R14
Extended
0.493
3.407
−1.49E−01
−3.40E+01
1.37E+02
−2.43E+02
1.65E+02
7.42E+01

aspheric surface

R15
Extended
−0.972
4.270
−2.97E+00
1.19E+01
−1.15E+02
6.90E+02
−1.90E+03
2.79E+03

aspheric surface

R16
Extended
1.000
4.270
−1.17E+01
6.25E+01
−2.08E+02
3.90E+02
−4.16E+02
2.78E+02

aspheric surface

Type
K
R
A8
A9
A10
A11
A12
A13

R1
Extended
0.000
2.172
−2.65E+01
1.45E+01
−4.44E+00
5.90E−01
0.00E+00
0.00E+00

aspheric surface

R2
Extended
−0.185
2.120
3.29E+02
−1.55E+02
3.13E+01
0.00E+00
0.00E+00
0.00E+00

aspheric surface

R3
Extended
−1.051
2.098
3.24E+02
−1.53E+02
3.09E+01
0.00E+00
0.00E+00
0.00E+00

aspheric surface

R4
Extended
−0.053
2.027
9.45E+01
−4.25E+01
8.19E+00
0.00E+00
0.00E+00
0.00E+00

aspheric surface

R5
Extended
0.022
1.976
−6.44E+01
3.57E+01
−8.19E+00
0.00E+00
0.00E+00
0.00E+00

aspheric surface

R6
Extended
0.137
1.900
−7.69E+01
3.76E+01
−7.32E+00
0.00E+00
0.00E+00
0.00E+00

aspheric surface

R7
Extended
0.083
1.818
−6.02E+01
2.52E+01
−4.07E+00
0.00E+00
0.00E+00
0.00E+00

aspheric surface

R8
Extended
1.298
1.715
−1.64E+01
5.68E+00
−6.85E−01
0.00E+00
0.00E+00
0.00E+00

aspheric surface

R9
Extended
−0.275
1.874
9.06E+00
−7.79E+00
1.69E+00
2.57E−01
0.00E+00
0.00E+00

aspheric surface

R10
Extended
0.025
2.106
8.47E+01
−3.53E+01
4.65E+00
1.14E−01
3.74E−01
0.00E+00

aspheric surface

R11
Extended
−69.062
2.317
1.73E+02
−4.70E+01
3.73E+00
2.93E−01
−3.77E−01
0.00E+00

aspheric surface

R12
Extended
−0.119
2.909
1.01E+03
−4.82E+02
8.96E+01
2.14E+00
2.85E−01
0.00E+00

aspheric surface

R13
Extended
−0.107
3.047
−7.20E+02
2.92E+02
−5.00E+01
8.97E+00
−3.96E+00
0.00E+00

aspheric surface

R14
Extended
0.493
3.407
−1.85E+02
9.50E+01
−1.90E+00
−1.21E+01
4.19E+00
−1.14E+00

aspheric surface

R15
Extended
−0.972
4.270
−2.30E+03
9.85E+02
−1.52E+02
−1.54E+01
4.64E+00
−1.56E+00

aspheric surface

R16
Extended
1.000
4.270
−1.78E+02
1.45E+02
−8.08E+01
1.79E+01
0.00E+00
0.00E+00

aspheric surface

In the 16 aspheric surfaces of the camera lens shown in Table 3b, surface types z of all the extended aspheric surfaces may be defined by using but not limited to the following aspheric surface formula:

In this embodiment of this disclosure, the second lens L2 has negative focal power, and a ratio of a focal length f2 of the second lens L2 to a focal length EFL of the camera lens is |f2/EFL|=1.71. The fifth lens L5 has positive focal power, and a ratio of a focal length f5 of the fifth lens to the focal length EFL of the camera lens is |f5/EFL|=1.07. The sixth lens L6 has negative focal power, and a ratio of a focal length f6 of the sixth lens to the focal length EFL of the camera lens is |f6/EFL|=1.14. A ratio of the focal length EFL of the camera lens to a total length (TTL) of the camera lens is |EFL/TTL|=0.830.

With continued reference to FIG. 7a, wherein the camera module is in the first imaging mode, the camera lens performs imaging in a full area of a photosensitive area, a half-image height Y1 of the camera lens is 5.8 mm, an entrance pupil diameter EPD1 is 3.037 mm, and a quantity F of apertures is 2.075. Referring to FIG. 7b, when the camera module is switched to the second imaging mode, the camera lens performs imaging in a partial area of a photosensitive area, a half-image height Y2 of the camera lens is 2.86 mm, an entrance pupil diameter EPD2 is 4.29 mm, and a quantity F of apertures is 1.461. A ratio of EPD1 to EPD2 is |EPD1/EPD2|=0.708, and a ratio of Y1 to Y2 is |Y1/Y2|=2.028. In addition, when a camera module is in the first imaging mode, a ratio of the half-image height Y1 of the camera lens to the total length (TTL) of the camera lens is |Y1/TTL|=0.77, and a ratio of the entrance pupil diameter EPD1 to the total length (TTL) of the camera lens is |EPD1/TTL|=0.4053. For each basic parameter of the camera lens, refer to Table 4.

TABLE 4

Object distance
Infinite far

Focal length EFL (mm)
6.22

First
Value of F
2.08

imaging
Half-image height Y1 (mm)
5.80

mode
Half FOV (°)
42.304

Second
Value of F
1.46

imaging
Half-image height Y2 (mm)
2.86

mode
Half FOV (°)
24.058

BFL (mm)
0.662

TTL (mm)
7.49

Designed wavelength
650 nm, 610 nm, 555 nm,

510 nm, 470 nm

The camera module shown in FIG. 7a and FIG. 7b is simulated. A simulation result of the camera module is described in detail below with reference to accompanying drawings.

FIG. 8a is a curve diagram of an axial chromatic aberration of a camera module in a first imaging mode. Simulation results of a depth of focus location of colorful light rays on wavelengths of 650 nm, 610 nm, 555 nm, 510 nm, and 470 nm are separately shown in the figure. It can be learned that the axial chromatic aberration of a camera lens in the first imaging mode is controlled to fall within a very small range.

FIG. 8b is a curve diagram of an axial chromatic aberration of a camera module in a second imaging mode. Simulation results of a depth of focus location of colorful light rays on wavelengths of 650 nm, 610 nm, 555 nm, 510 nm, and 470 nm are separately shown in the figure. It can be learned that the axial chromatic aberration of a camera lens in the second imaging mode is controlled to fall within a very small range.

FIG. 9a is a curve diagram of a lateral chromatic aberration of a camera module in a first imaging mode. In the figure, five solid curves are respectively colorful light rays on wavelengths of 650 nm, 610 nm, 555 nm, 510 nm, and 470 nm, and dotted lines indicate that a diffraction limit range is from −1.4 μm to 1.4 μm, and it can be learned that lateral chromatic aberrations of the five light rays basically fall within the diffraction limit range.

FIG. 9b is a curve diagram of a lateral chromatic aberration of a camera module in a second imaging mode. In the figure, five solid curves are respectively colorful light rays on wavelengths of 650 nm, 610 nm, 555 nm, 510 nm, and 470 nm, and dotted lines indicate that a diffraction limit range is from −1.0 μm to 1.0 μm, and it can be learned that lateral chromatic aberrations of the five light rays basically fall within the diffraction limit range.

FIG. 10a is a curve diagram of optical distortion of a camera module in a first imaging mode, showing a difference between imaging deformation and an ideal shape. In the figure, five solid curves are respectively colorful light rays on wavelengths of 650 nm, 610 nm, 555 nm, 510 nm, and 470 nm. It can be learned that, in this mode, the optical distortion may be controlled to fall within a range less than 2%.

FIG. 10b is a curve diagram of optical distortion of a camera module in a second imaging mode, showing a difference between imaging deformation and an ideal shape. In the figure, five solid curves are respectively colorful light rays on wavelengths of 650 nm, 610 nm, 555 nm, 510 nm, and 470 nm. It can be learned that, in this mode, the optical distortion may be controlled to fall within a range less than 2%.

FIG. 11a and FIG. 11b show a third specific camera module. FIG. 11a is a schematic diagram of a structure of the camera module in a first imaging mode. FIG. 11b is a schematic diagram of a structure of the camera module in a second imaging mode. A camera lens of the camera module includes eight lenses having focal power, and the eight lenses are sequentially a first lens L1, a second lens L2, a third lens L3, a fourth lens L4, a fifth lens L5, a sixth lens L6, a seventh lens L7, and an eighth lens L8 from an object side. A variable aperture ST may be specifically located on an object side of the first lens L1, and an optical filter G1 may be located on an image side of the eighth lens L8.

In this embodiment of this disclosure, each lens of the camera lens may be an aspheric lens. In other words, the camera lens includes 16 aspheric surfaces in total. Referring to both Table 5a and Table 5b, Table 5a shows a curvature radius, a thickness, a refractive index, and an Abbe number of each lens of the camera lens, and Table 5b shows an aspheric coefficient of each lens.

TABLE 5a

Curvature

Refractive
Abbe

Description
radius
Thickness
index
number

ST
Variable
Infinite
d0
−0.270
—
—
—
—

aperture

R1
First
3.530
d1
1.217
n1
1.55
v1
71.7

R2
lens
8.789
a1
0.273

R3
Second
24.967
d2
0.161
n2
1.68
v2
18.4

R4
lens
6.799
a2
0.056

R5
Third
4.598
d3
0.409
n3
1.54
v3
56.0

R6
lens
9.333
a3
0.123

R7
Fourth
5.398
d4
0.265
n4
1.54
v4
56.0

R8
lens
6.598
a4
0.551

R9
Fifth
−112.991
d5
0.636
n5
1.51
v5
56.5

R10
lens
−4.081
a5
0.229

R11
Sixth
15.595
d6
0.299
n6
1.54
v6
55.9

R12
lens
6.840
a6
0.724

R13
Seventh
5.316
d7
0.596
n7
1.54
v7
56.0

R14
lens
14.302
a7
1.053

R15
Eighth
−12.023
d8
0.316
n8
1.54
v8
55.7

R16
lens
6.797
a8
0.418

R17
Optical
Infinite
d9
0.210
n9
1.52
v9
64.2

R18
filter
Infinite
a9
0.123

TABLE 5b

Type
K
R
A2
A3
A4
A5
A6
A7

R1
Extended
−0.567
2.851
1.55E−01
−1.21E+00
6.66E+00
−3.05E+01
1.05E+02
−2.29E+02

aspheric surface

R2
Extended
−4.735
2.862
4.70E−01
−6.92E+00
3.09E+01
−8.03E+01
1.23E+02
−1.09E+02

aspheric surface

R3
Extended
5.328
2.870
−1.41E−02
−3.12E+00
1.31E+01
−3.74E+01
8.40E+01
−1.24E+02

aspheric surface

R4
Extended
−0.828
2.860
1.07E+00
−1.38E+01
5.86E+01
−1.39E+02
2.10E+02
−2.11E+02

aspheric surface

R5
Extended
−0.479
2.800
1.35E+00
−1.47E+01
5.99E+01
−1.49E+02
2.27E+02
−1.99E+02

aspheric surface

R6
Extended
1.913
2.800
−4.31E−01
4.23E+00
−2.05E+01
4.17E+01
−3.64E+01
3.89E−02

aspheric surface

R7
Extended
0.153
2.886
−1.18E+00
2.50E+00
−1.57E+01
8.48E+01
−2.94E+02
6.13E+02

aspheric surface

R8
Extended
1.272
2.752
−7.59E−01
1.13E+00
−8.38E+00
5.83E+01
−2.51E+02
5.86E+02

aspheric surface

R9
Extended
112.283
2.727
4.66E−01
−2.93E+00
2.43E+01
−9.17E+01
1.63E+02
−1.41E+02

aspheric surface

R10
Extended
−0.686
2.728
3.13E+00
−2.13E+01
1.04E+02
−3.08E+02
5.57E+02
−6.59E+02

aspheric surface

R11
Extended
−19.855
2.771
3.44E+00
−3.14E+01
1.31E+02
−3.19E+02
4.79E+02
−4.55E+02

aspheric surface

R12
Extended
0.843
2.909
1.34E+00
−2.33E+01
9.15E+01
−2.04E+02
2.87E+02
−2.65E+02

aspheric surface

R13
Extended
−4.226
3.031
1.50E+00
−6.88E+00
6.24E+00
−6.26E+00
9.32E+00
−9.08E+00

aspheric surface

R14
Extended
7.126
3.795
1.14E+00
1.23E+01
−1.60E+02
6.63E+02
−1.56E+03
2.32E+03

aspheric surface

R15
Extended
−0.811
4.364
−3.07E+01
1.90E+02
−4.99E+02
5.29E+02
3.08E+02
−1.64E+03

aspheric surface

R16
Extended
−11.111
4.733
−1.25E+01
5.03E+01
−8.96E+01
2.48E+01
1.55E+02
−2.70E+02

aspheric surface

Type
K
R
A8
A9
A10
A11
A12
A13

R1
Extended
−0.567
2.851
2.96E+02
−2.18E+02
8.50E+01
−1.35E+01
0.00E+00
0.00E+00

aspheric surface

R2
Extended
−4.735
2.862
5.30E+01
−1.21E+01
7.88E−01
0.00E+00
0.00E+00
0.00E+00

aspheric surface

R3
Extended
5.328
2.870
1.07E+02
−4.88E+01
9.06E+00
0.00E+00
0.00E+00
0.00E+00

aspheric surface

R4
Extended
−0.828
2.860
1.40E+02
−5.55E+01
9.75E+00
0.00E+00
0.00E+00
0.00E+00

aspheric surface

R5
Extended
−0.479
2.800
9.05E+01
−1.52E+01
−8.43E−01
0.00E+00
0.00E+00
0.00E+00

aspheric surface

R6
Extended
1.913
2.800
2.78E+01
−2.30E+01
6.49E+00
0.00E+00
0.00E+00
0.00E+00

aspheric surface

R7
Extended
0.153
2.886
−7.40E+02
4.74E+02
−1.24E+02
0.00E+00
0.00E+00
0.00E+00

aspheric surface

R8
Extended
1.272
2.752
−7.34E+02
4.67E+02
−1.18E+02
0.00E+00
0.00E+00
0.00E+00

aspheric surface

R9
Extended
112.283
2.727
4.29E+01
1.89E+01
−1.79E+01
3.90E+00
0.00E+00
0.00E+00

aspheric surface

R10
Extended
−0.686
2.728
5.30E+02
−2.93E+02
1.08E+02
−2.37E+01
2.36E+00
0.00E+00

aspheric surface

R11
Extended
−19.855
2.771
2.70E+02
−9.34E+01
1.53E+01
6.02E−02
−2.50E−01
0.00E+00

aspheric surface

R12
Extended
0.843
2.909
1.62E+02
−6.54E+01
1.66E+01
−2.42E+00
1.54E−01
0.00E+00

aspheric surface

R13
Extended
−4.226
3.031
4.92E+00
−1.44E+00
1.91E−01
−6.37E−04
−1.65E−03
0.00E+00

aspheric surface

R14
Extended
7.126
3.795
−2.30E+03
1.53E+03
−6.70E+02
1.87E+02
−3.00E+01
2.11E+00

aspheric surface

R15
Extended
−0.811
4.364
2.26E+03
−1.74E+03
8.21E+02
−2.37E+02
3.86E+01
−2.71E+00

aspheric surface

R16
Extended
−11.111
4.733
2.11E+02
−8.84E+01
1.93E+01
−1.73E+00
0.00E+00
0.00E+00

aspheric surface

In the 16 aspheric surfaces of the camera lens shown in Table 5b, surface types z of all the extended aspheric surfaces may be defined by using but not limited to the following aspheric surface formula:

In this embodiment of this disclosure, the second lens L2 has negative focal power, and a ratio of a focal length f2 of the second lens L2 to a focal length EFL of the camera lens is |f2/EFL|=2.452. The fifth lens L5 has positive focal power, and a ratio of a focal length f5 of the fifth lens to the focal length EFL of the camera lens is |f5/EFL|=1.49. The sixth lens L6 has negative focal power, and a ratio of a focal length f6 of the sixth lens to the focal length EFL of the camera lens is |f6/EFL|=4.052. A ratio of the focal length EFL of the camera lens to a total length (TTL) of the camera lens is |EFL/TTL|=0.7269.

With continued reference to FIG. 11a, when the camera module is in the first imaging mode, the camera lens performs imaging in a full area of a photosensitive area, a half-image height Y1 of the camera lens is 5.8 mm, an entrance pupil diameter EPD1 is 2.8 mm, and a quantity F of apertures is 1.99. Referring to FIG. 11b, when the camera module is switched to the second imaging mode, the camera lens performs imaging in a partial area of a photosensitive area, a half-image height Y2 of the camera lens is 3.00 mm, an entrance pupil diameter EPD2 is 4.84 mm, and a quantity F of apertures is 1.15. A ratio of EPD1 to EPD2 is |EPD1/EPD2|=0.579, and a ratio of Y1 to Y2 is |Y1/Y2|=1.933. In addition, when a camera module is in the first imaging mode, a ratio of the half-image height Y1 of the camera lens to the total length (TTL) of the camera lens is |Y1/TTL|=0.757, and a ratio of the entrance pupil diameter EPD1 to the total length (TTL) of the camera lens is |EPD1/TTL|=0.3656. For each basic parameter of the camera lens, refer to Table 6.

TABLE 6

Object distance
Infinite far

Focal length EFL (mm)
5.57

First
Value of F
1.99

imaging
Half-image height Y1 (mm)
5.80

mode
Half FOV (°)
45.261

Second
Value of F
1.15

imaging
Half-image height Y2 (mm)
3.00

mode
Half FOV (°)
27.908

BFL (mm)
0.750

TTL (mm)
7.66

Designed wavelength
650 nm, 610 nm, 555 nm,

510 nm, 470 nm

The camera module shown in FIG. 11a and FIG. 11b is simulated. A simulation result of the camera module is described in detail below with reference to accompanying drawings.

FIG. 12a is a curve diagram of an axial chromatic aberration of a camera module in a first imaging mode. Simulation results of a depth of focus location of colorful light rays on wavelengths of 650 nm, 610 nm, 555 nm, 510 nm, and 470 nm are separately shown in the figure. It can be learned that the axial chromatic aberration of a camera lens in the first imaging mode is controlled to fall within a very small range.

FIG. 12b is a curve diagram of an axial chromatic aberration of a camera module in a second imaging mode. Simulation results of a depth of focus location of colorful light rays on wavelengths of 650 nm, 610 nm, 555 nm, 510 nm, and 470 nm are separately shown in the figure. It can be learned that the axial chromatic aberration of a camera lens in the second imaging mode is controlled to fall within a very small range.

FIG. 13a is a curve diagram of a lateral chromatic aberration of a camera module in a first imaging mode. In the figure, five solid curves are respectively colorful light rays on wavelengths of 650 nm, 610 nm, 555 nm, 510 nm, and 470 nm, and dotted lines indicate that a diffraction limit range is from −1.3 μm to 1.3 μm, and it can be learned that lateral chromatic aberrations of the five light rays basically fall within the diffraction limit range.

FIG. 13b is a curve diagram of a lateral chromatic aberration of a camera module in a second imaging mode. In the figure, five solid curves are respectively colorful light rays on wavelengths of 650 nm, 610 nm, 555 nm, 510 nm, and 470 nm, and dotted lines indicate that a diffraction limit range is from −0.78 μm to 0.78 μm, and it can be learned that lateral chromatic aberrations of the five light rays basically fall within the diffraction limit range.

FIG. 14a is a curve diagram of optical distortion of a camera module in a first imaging mode, showing a difference between imaging deformation and an ideal shape. In the figure, five solid curves are respectively colorful light rays on wavelengths of 650 nm, 610 nm, 555 nm, 510 nm, and 470 nm. It can be learned that, in this mode, the optical distortion may be controlled to fall within a range less than 4%.

FIG. 14b is a curve diagram of optical distortion of a camera module in a second imaging mode, showing a difference between imaging deformation and an ideal shape. In the figure, five solid curves are respectively colorful light rays on wavelengths of 650 nm, 610 nm, 555 nm, 510 nm, and 470 nm. It can be learned that, in this mode, the optical distortion may be controlled to fall within a range less than 4%.

FIG. 15a and FIG. 15b show a fourth specific camera module. FIG. 15a is a schematic diagram of a structure of the camera module in a first imaging mode. FIG. 15b is a schematic diagram of a structure of the camera module in a second imaging mode. A camera lens of the camera module includes eight lenses having focal power, and the eight lenses are sequentially a first lens L1, a second lens L2, a third lens L3, a fourth lens L4, a fifth lens L5, a sixth lens L6, a seventh lens L7, and an eighth lens L8 from an object side. A variable aperture ST may be specifically located on an object side of the first lens L1, and an optical filter G1 may be located on an image side of the eighth lens L8.

In this embodiment of this disclosure, each lens of the camera lens may be an aspheric lens. In other words, the camera lens includes 16 aspheric surfaces in total. Referring to both Table 7a and Table 7b, Table 7a shows a curvature radius, a thickness, a refractive index, and an Abbe number of each lens of the camera lens, and Table 7b shows an aspheric coefficient of each lens.

TABLE 7a

Curvature

Refractive
Abbe

Description
radius
Thickness
index
number

ST
Variable
Infinite
d0
−0.270
—
—
—
—

aperture

R1
First
3.061
d1
1.300
n1
1.55
v1
56.0

R2
lens
8.023
a1
0.142

R3
Second
7.722
d2
0.101
n2
1.67
v2
19.2

R4
lens
3.921
a2
0.119

R5
Third
3.268
d3
0.704
n3
1.54
v3
56.0

R6
lens
5.629
a3
0.263

R7
Fourth
6.043
d4
0.347
n4
1.66
v4
20.4

R8
lens
8.019
a4
0.489

R9
Fifth
−21.196
d5
0.327
n5
1.54
v5
56.0

R10
lens
−3.186
a5
0.265

R11
Sixth
41.391
d6
0.432
n6
1.64
v6
23.5

R12
lens
4.197
a6
0.581

R13
Seventh
5.292
d7
0.732
n7
1.66
v7
20.4

R14
lens
7.825
a7
0.836

R15
Eighth
−4.550
d8
0.211
n8
1.54
v8
56.0

R16
lens
22.654
a8
0.224

R17
Optical
Infinite
d9
0.210
n9
1.52
v9
64.2

R18
filter
Infinite
a9
0.170

TABLE 7b

Type
K
R
A2
A3
A4
A5
A6
A7

R1
Extended
0.001
1.935
−2.27E−01
2.59E+00
−1.56E+01
5.23E+01
−1.10E+02
1.54E+02

aspheric surface

R2
Extended
−0.281
1.962
7.19E−02
−3.94E−01
−6.80E+00
5.48E+01
−2.01E+02
4.41E+02

aspheric surface

R3
Extended
−0.891
1.971
2.04E−01
−5.76E+00
4.01E+01
−1.66E+02
4.55E+02
−8.64E+02

aspheric surface

R4
Extended
−0.044
1.958
−3.64E−01
1.45E+00
−1.12E+01
5.57E+01
−1.78E+02
3.85E+02

aspheric surface

R5
Extended
0.019
2.002
−9.59E−02
−6.42E−01
−6.90E+00
8.15E+01
−3.80E+02
1.03E+03

aspheric surface

R6
Extended
0.155
1.960
−2.25E−01
−1.14E+00
1.69E+01
−1.14E+02
4.89E+02
−1.42E+03

aspheric surface

R7
Extended
0.101
1.950
−1.05E+00
7.59E+00
−5.76E+01
2.75E+02
−8.57E+02
1.80E+03

aspheric surface

R8
Extended
1.278
1.919
−5.50E−01
−3.12E−01
6.92E+00
−3.57E+01
1.18E+02
−2.88E+02

aspheric surface

R9
Extended
3.518
2.155
1.52E−01
1.55E+00
−1.70E+01
1.18E+02
−6.17E+02
2.11E+03

aspheric surface

R10
Extended
0.014
2.226
2.35E+00
−9.94E+00
5.08E+01
−2.42E+02
8.26E+02
−1.97E+03

aspheric surface

R11
Extended
−81.111
2.492
1.61E+00
−7.28E+00
−2.35E+01
3.11E+02
−1.41E+03
3.68E+03

aspheric surface

R12
Extended
−0.108
3.120
−3.22E+00
3.73E+00
−3.27E+01
2.73E+02
−1.48E+03
5.01E+03

aspheric surface

R13
Extended
−0.165
3.319
−3.00E+00
8.26E+00
−2.13E+02
1.65E+03
−7.01E+03
1.92E+04

aspheric surface

R14
Extended
0.568
3.715
−1.04E+00
2.40E+01
−5.51E+02
4.05E+03
−1.67E+04
4.47E+04

aspheric surface

R15
Extended
−0.978
4.723
−1.17E+01
1.69E+02
−1.43E+03
6.95E+03
−1.99E+04
3.37E+04

aspheric surface

R16
Extended
3.190
4.911
−1.15E+01
7.16E+01
−1.86E+02
−8.25E+02
6.70E+03
−1.90E+04

aspheric surface

Type
K
R
A8
A9
A10
A11
A12
A13

R1
Extended
0.001
1.935
−1.46E+02
9.55E+01
−4.26E+01
1.26E+01
−2.28E+00
1.96E−01

aspheric surface

R2
Extended
−0.281
1.962
−6.24E+02
5.88E+02
−3.68E+02
1.48E+02
−3.43E+01
3.53E+00

aspheric surface

R3
Extended
−0.891
1.971
1.16E+03
−1.09E+03
7.03E+02
−2.96E+02
7.31E+01
−8.02E+00

aspheric surface

R4
Extended
−0.044
1.958
−5.72E+02
5.86E+02
−4.06E+02
1.82E+02
−4.73E+01
5.45E+00

aspheric surface

R5
Extended
0.019
2.002
−1.78E+03
2.05E+03
−1.56E+03
7.64E+02
−2.16E+02
2.69E+01

aspheric surface

R6
Extended
0.155
1.960
2.78E+03
−3.67E+03
3.21E+03
−1.78E+03
5.70E+02
−7.98E+01

aspheric surface

R7
Extended
0.101
1.950
−2.59E+03
2.55E+03
−1.68E+03
6.90E+02
−1.55E+02
1.32E+01

aspheric surface

R8
Extended
1.278
1.919
5.25E+02
−6.93E+02
6.35E+02
−3.80E+02
1.33E+02
−2.08E+01

aspheric surface

R9
Extended
3.518
2.155
−4.68E+03
6.81E+03
−6.48E+03
3.91E+03
−1.36E+03
2.08E+02

aspheric surface

R10
Extended
0.014
2.226
3.29E+03
−3.82E+03
3.01E+03
−1.54E+03
4.56E+02
−5.97E+01

aspheric surface

R11
Extended
−81.111
2.492
−6.17E+03
6.88E+03
−5.10E+03
2.43E+03
−6.71E+02
8.20E+01

aspheric surface

R12
Extended
−0.108
3.120
−1.09E+04
1.53E+04
−1.39E+04
7.99E+03
−2.62E+03
3.75E+02

aspheric surface

R13
Extended
−0.165
3.319
−3.56E+04
4.53E+04
−3.87E+04
2.12E+04
−6.74E+03
9.40E+02

aspheric surface

R14
Extended
0.568
3.715
−8.14E+04
1.02E+05
−8.56E+04
4.64E+04
−1.45E+04
2.01E+03

aspheric surface

R15
Extended
−0.978
4.723
−3.07E+04
5.10E+03
2.00E+04
−2.24E+04
1.03E+04
−1.85E+03

aspheric surface

R16
Extended
3.190
4.911
2.90E+04
−2.58E+04
1.32E+04
−3.67E+03
5.80E+02
−8.13E+01

aspheric surface

In the 16 aspheric surfaces of the camera lens shown in Table 7b, surface types z of all the extended aspheric surfaces may be defined by using but not limited to the following aspheric surface formula:

In this embodiment of this disclosure, the second lens L2 has negative focal power, and a ratio of a focal length f2 of the second lens L2 to a focal length EFL of the camera lens is |f2/EFL|=1.99. The fifth lens L5 has positive focal power, and a ratio of a focal length f5 of the fifth lens to the focal length EFL of the camera lens is |f5/EFL|=1.14. The sixth lens L6 has negative focal power, and a ratio of a focal length f6 of the sixth lens to the focal length EFL of the camera lens is |f6/EFL|=1.22. A ratio of the focal length EFL of the camera lens to a total length (TTL) of the camera lens is |EFL/TTL|=0.802.

With continued reference to FIG. 15a, when the camera module is in the first imaging mode, the camera lens performs imaging in a full area of a photosensitive area, a half-image height Y1 of the camera lens is 5.4 mm, an entrance pupil diameter EPD1 is 3.62 mm, and a quantity F of apertures is 1.65. Referring to FIG. 15b, the camera module is switched to the second imaging mode, the camera lens performs imaging in a partial area of a photosensitive area, a half-image height Y2 of the camera lens is 5.3 mm, an entrance pupil diameter EPD2 is 3.774 mm, and a quantity F of apertures is 1.58. A ratio of EPD1 to EPD2 is |EPD1/EPD2|=0.96, and a ratio of Y1 to Y2 is |Y1/Y2|=1.02. In addition, when a camera module is in the first imaging mode, a ratio of the half-image height Y1 of the camera lens to the total length (TTL) of the camera lens is |Y1/TTL|=0.724, and a ratio of the entrance pupil diameter EPD1 to the total length (TTL) of the camera lens is |EPD1/TTL|=0.486. For each basic parameter of the camera lens, refer to Table 8.

TABLE 8

Object distance
Infinite far

Focal length EFL (mm)
5.97

First
Value of F
1.65

imaging
Half-image height Y1 (mm)
5.40

mode
Half FOV (°)
41.917

Second
Value of F
1.58

imaging
Half-image height Y2 (mm)
5.30

mode
Half FOV (°)
41.492

BFL (mm)
0.604

TTL (mm)
7.45

Designed wavelength
650 nm, 610 nm, 555 nm,

510 nm, 470 nm

The camera module shown in FIG. 15a and FIG. 15b is simulated. A simulation result of the camera module is described in detail below with reference to accompanying drawings.

FIG. 16a is a curve diagram of an axial chromatic aberration of a camera module in a first imaging mode. Simulation results of a depth of focus location of colorful light rays on wavelengths of 650 nm, 610 nm, 555 nm, 510 nm, and 470 nm are separately shown in the figure. It can be learned that the axial chromatic aberration of a camera lens in the first imaging mode is controlled to fall within a very small range.

FIG. 16b is a curve diagram of an axial chromatic aberration of a camera module in a second imaging mode. Simulation results of a depth of focus location of colorful light rays on wavelengths of 650 nm, 610 nm, 555 nm, 510 nm, and 470 nm are separately shown in the figure. It can be learned that the axial chromatic aberration of a camera lens in the second imaging mode is controlled to fall within a very small range.

FIG. 17a is a curve diagram of a lateral chromatic aberration of a camera module in a first imaging mode. In the figure, five solid curves are respectively colorful light rays on wavelengths of 650 nm, 610 nm, 555 nm, 510 nm, and 470 nm, and dotted lines indicate that a diffraction limit range is from −1.1 μm to 1.1 μm, and it can be learned that lateral chromatic aberrations of the five light rays basically fall within the diffraction limit range.

FIG. 17b is a curve diagram of a lateral chromatic aberration of a camera module in a second imaging mode. In the figure, five solid curves are respectively colorful light rays on wavelengths of 650 nm, 610 nm, 555 nm, 510 nm, and 470 nm, and dotted lines indicate that a diffraction limit range is from −1.1 μm to 1.1 μm, and it can be learned that lateral chromatic aberrations of the five light rays basically fall within the diffraction limit range.

FIG. 18a is a curve diagram of optical distortion of a camera module in a first imaging mode, showing a difference between imaging deformation and an ideal shape. In the figure, five solid curves are respectively colorful light rays on wavelengths of 650 nm, 610 nm, 555 nm, 510 nm, and 470 nm. It can be learned that, in this mode, the optical distortion may be controlled to fall within a range less than 2%.

FIG. 18b is a curve diagram of optical distortion of a camera module in a second imaging mode, showing a difference between imaging deformation and an ideal shape. In the figure, five solid curves are respectively colorful light rays on wavelengths of 650 nm, 610 nm, 555 nm, 510 nm, and 470 nm. It can be learned that, in this mode, the optical distortion may be controlled to fall within a range less than 2%.

FIG. 19a and FIG. 19b show a fifth specific camera module. FIG. 19a is a schematic diagram of a structure of the camera module in a first imaging mode. FIG. 19b is a schematic diagram of a structure of the camera module in a second imaging mode. A camera lens of the camera module includes eight lenses having focal power, and the eight lenses are sequentially a first lens L1, a second lens L2, a third lens L3, a fourth lens L4, a fifth lens L5, a sixth lens L6, a seventh lens L7, and an eighth lens L8 from an object side. A variable aperture ST may be specifically located on an object side of the first lens L1, and an optical filter G1 may be located on an image side of the eighth lens L8.

In this embodiment of this disclosure, each lens of the camera lens may be an aspheric lens. In other words, the camera lens includes 16 aspheric surfaces in total. Referring to both Table 9a and Table 9b, Table 9a shows a curvature radius, a thickness, a refractive index, and an Abbe number of each lens of the camera lens, and Table 9b shows an aspheric coefficient of each lens.

TABLE 9a

Curvature

Description
radius
Thickness
Refractive index
Abbe number

ST
Variable
Infinite
d0
−0.030
—
—
—
—

aperture

R1
First lens
3.486
d1
1.187
n1
1.55
v1
71.7

R2

8.653
a1
0.249

R3
Second
30.536
d2
0.140
n2
1.68
v2
18.4

R4
lens
7.081
a2
0.097

R5
Third lens
4.410
d3
0.498
n3
1.54
v3
56.0

R6

8.620
a3
0.095

R7
Fourth lens
5.355
d4
0.260
n4
1.54
v4
56.0

R8

6.569
a4
0.530

R9
Fifth lens
−106.016
d5
0.600
n5
1.51
v5
56.5

R10

−4.091
a5
0.222

R11
Sixth lens
15.744
d6
0.311
n6
1.54
v6
55.9

R12

6.822
a6
0.717

R13
Seventh
5.318
d7
0.584
n7
1.54
v7
56.0

R14
lens
14.267
a7
1.044

R15
Eighth lens
−11.879
d8
0.315
n8
1.54
v8
55.7

R16

6.777
a8
0.425

R17
Optical
Infinite
d9
0.210
n9
1.52
v9
64.2

R18
filter
Infinite
a9
0.131

TABLE 9b

Type
K
R
A2
A3
A4
A5
A6
A7

R1
Extended
−0.570
2.768
−7.82E−02
1.41E+00
−5.21E+00
1.30E+00
4.20E+01
−1.29E+02

aspheric surface

R2
Extended
−4.692
2.758
8.25E−02
−1.03E+00
−8.49E−01
9.63E+00
−2.47E+01
3.53E+01

aspheric surface

R3
Extended
5.969
2.757
5.45E−02
−2.53E+00
8.48E+00
−2.03E+01
4.23E+01
−6.01E+01

aspheric surface

R4
Extended
−0.902
2.742
9.78E−01
−1.30E+01
5.76E+01
−1.42E+02
2.19E+02
−2.17E+02

aspheric surface

R5
Extended
−0.521
2.767
1.33E+00
−1.55E+01
6.93E+01
−1.90E+02
3.18E+02
−3.20E+02

aspheric surface

R6
Extended
2.201
2.743
−4.72E−01
5.67E+00
−3.16E+01
8.64E+01
−1.40E+02
1.41E+02

aspheric surface

R7
Extended
0.217
2.714
−9.33E−01
1.19E+00
−4.64E+00
2.54E+01
−9.25E+01
1.93E+02

aspheric surface

R8
Extended
1.162
2.658
−7.64E−01
3.47E+00
−2.64E+01
1.19E+02
−3.36E+02
5.81E+02

aspheric surface

R9
Extended
−8.809
2.615
4.18E−01
−1.78E+00
7.11E+00
−1.32E+00
−7.28E+01
2.09E+02

aspheric surface

R10
Extended
−0.715
2.607
2.66E+00
−1.71E+01
7.85E+01
−2.16E+02
3.68E+02
−4.11E+02

aspheric surface

R11
Extended
−21.011
2.342
1.68E+00
−1.04E+01
2.96E+01
−4.94E+01
5.07E+01
−3.22E+01

aspheric surface

R12
Extended
0.739
2.321
5.53E−01
−6.20E+00
1.56E+01
−2.21E+01
1.99E+01
−1.17E+01

aspheric surface

R13
Extended
−4.045
1.996
2.49E−01
−4.82E−01
1.59E−01
−7.79E−02
6.46E−02
−3.01E−02

aspheric surface

R14
Extended
7.103
1.923
6.77E−02
3.05E−01
−8.73E−01
8.99E−01
−5.32E−01
2.01E−01

aspheric surface

R15
Extended
−0.591
1.847
−9.79E−01
1.08E+00
−5.51E−01
1.50E−01
−1.78E−02
−1.55E−03

aspheric surface

R16
Extended
−10.599
1.891
−4.74E−01
4.37E−01
−2.10E−01
5.80E−02
−9.78E−03
1.02E−03

aspheric surface

Type
K
R
A8
A9
A10
A11
A12
A13

R1
Extended
−0.570
2.768
1.78E+02
−1.29E+02
4.84E+01
−7.34E+00
0.00E+00
0.00E+00

aspheric surface

R2
Extended
−4.692
2.758
−2.88E+01
1.23E+01
−2.13E+00
0.00E+00
0.00E+00
0.00E+00

aspheric surface

R3
Extended
5.969
2.757
4.97E+01
−2.14E+01
3.73E+00
0.00E+00
0.00E+00
0.00E+00

aspheric surface

R4
Extended
−0.902
2.742
1.36E+02
−4.86E+01
7.55E+00
0.00E+00
0.00E+00
0.00E+00

aspheric surface

R5
Extended
−0.521
2.767
1.86E+02
−5.63E+01
6.65E+00
0.00E+00
0.00E+00
0.00E+00

aspheric surface

R6
Extended
2.201
2.743
−8.63E+01
2.77E+01
−3.22E+00
0.00E+00
0.00E+00
0.00E+00

aspheric surface

R7
Extended
0.217
2.714
−2.23E+02
1.33E+02
−3.21E+01
0.00E+00
0.00E+00
0.00E+00

aspheric surface

R8
Extended
1.162
2.658
−5.88E+02
3.18E+02
−7.07E+01
0.00E+00
0.00E+00
0.00E+00

aspheric surface

R9
Extended
−8.809
2.615
−2.70E+02
1.86E+02
−6.71E+01
9.97E+00
0.00E+00
0.00E+00

aspheric surface

R10
Extended
−0.715
2.607
3.13E+02
−1.63E+02
5.61E+01
−1.14E+01
1.04E+00
0.00E+00

aspheric surface

R11
Extended
−21.011
2.342
1.22E+01
−2.29E+00
1.08E−02
7.06E−02
−8.45E−03
0.00E+00

aspheric surface

R12
Extended
0.739
2.321
4.58E+00
−1.18E+00
1.91E−01
−1.77E−02
7.17E−04
0.00E+00

aspheric surface

R13
Extended
−4.045
1.996
7.55E−03
−1.05E−03
7.52E−05
−1.92E−06
−2.44E−08
0.00E+00

aspheric surface

R14
Extended
7.103
1.923
−5.07E−02
8.59E−03
−9.65E−04
6.90E−05
−2.84E−06
5.12E−08

aspheric surface

R15
Extended
−0.591
1.847
9.25E−04
−1.58E−04
1.48E−05
−8.22E−07
2.52E−08
−3.29E−10

aspheric surface

R16
Extended
−10.599
1.891
−6.36E−05
2.27E−06
−3.93E−08
1.97E−10
0.00E+00
0.00E+00

aspheric surface

In the 16 aspheric surfaces of the camera lens shown in Table 9b, surface types z of all the extended aspheric surfaces may be defined by using but not limited to the following aspheric surface formula:

In this embodiment of this disclosure, the second lens L2 has negative focal power, and a ratio of a focal length f2 of the second lens L2 to a focal length EFL of the camera lens is |f2/EFL|=2.42. The fifth lens L5 has positive focal power, and a ratio of a focal length f5 of the fifth lens to the focal length EFL of the camera lens is |f5/EFL|=1.49. The sixth lens L6 has negative focal power, and a ratio of a focal length f6 of the sixth lens to the focal length EFL of the camera lens is |f6/EFL|=4.01. A ratio of the focal length EFL of the camera lens to a total length (TTL) of the camera lens is |EFL/TTL|=0.731.

With continued reference to FIG. 18a, when the camera module is in the first imaging mode, the camera lens performs imaging in a full area of a photosensitive area, a half-image height Y1 of the camera lens is 5.8 mm, an entrance pupil diameter EPD1 is 1.4 mm, and a quantity F of apertures is 3.97. Referring to FIG. 18b, when the camera module is switched to the second imaging mode, the camera lens performs imaging in a partial area of a photosensitive area, a half-image height Y2 of the camera lens is 1.95 mm, an entrance pupil diameter EPD2 is 4.84 mm, and a quantity F of apertures is 1.14. A ratio of EPD1 to EPD2 is |EPD1/EPD2|=0.289, and a ratio of Y1 to Y2 is |Y1/Y2|=2.97. In addition, when a camera module is in the first imaging mode, a ratio of the half-image height Y1 of the camera lens to the total length (TTL) of the camera lens is |Y1/TTL|=0.762, and a ratio of the entrance pupil diameter EPD1 to the total length (TTL) of the camera lens is |EPD1/TTL|=0.184. For each basic parameter of the camera lens, refer to Table 10.

TABLE 10

Object distance
Infinite far

Focal length EFL (mm)
5.57

First
Value of F
3.97

imaging
Half-image height Y1 (mm)
5.80

mode
Half FOV (°)
45.34

Second
Value of F
1.14

imaging
Half-image height Y2 (mm)
1.95

mode
Half FOV (°)
18.78

BFL (mm)
0.766

TTL (mm)
7.62

Designed wavelength
650 nm, 610 nm, 555 nm,

510 nm, 470 nm

The camera module shown in FIG. 19a and FIG. 19b is simulated. A simulation result of the camera module is described in detail below with reference to accompanying drawings.

FIG. 20a is a curve diagram of an axial chromatic aberration of a camera module in a first imaging mode. Simulation results of a depth of focus location of colorful light rays on wavelengths of 650 nm, 610 nm, 555 nm, 510 nm, and 470 nm are separately shown in the figure. It can be learned that the axial chromatic aberration of a camera lens in the first imaging mode is controlled to fall within a very small range.

FIG. 20b is a curve diagram of an axial chromatic aberration of a camera module in a second imaging mode. Simulation results of a depth of focus location of colorful light rays on wavelengths of 650 nm, 610 nm, 555 nm, 510 nm, and 470 nm are separately shown in the figure. It can be learned that the axial chromatic aberration of a camera lens in the second imaging mode is controlled to fall within a very small range.

FIG. 21a is a curve diagram of a lateral chromatic aberration of a camera module in a first imaging mode. In the figure, five solid curves are respectively colorful light rays on wavelengths of 650 nm, 610 nm, 555 nm, 510 nm, and 470 nm, and dotted lines indicate that a diffraction limit range is from −2.7 μm to 2.7 μm, and it can be learned that lateral chromatic aberrations of the five light rays basically fall within the diffraction limit range.

FIG. 21b is a curve diagram of a lateral chromatic aberration of a camera module in a second imaging mode. In the figure, five solid curves are respectively colorful light rays on wavelengths of 650 nm, 610 nm, 555 nm, 510 nm, and 470 nm, and dotted lines indicate that a diffraction limit range is from −0.78 μm to 0.78 μm, and it can be learned that lateral chromatic aberrations of the five light rays basically fall within the diffraction limit range.

FIG. 22a is a curve diagram of optical distortion of a camera module in a first imaging mode, showing a difference between imaging deformation and an ideal shape. In the figure, five solid curves are respectively colorful light rays on wavelengths of 650 nm, 610 nm, 555 nm, 510 nm, and 470 nm. It can be learned that, in this mode, the optical distortion may be controlled to fall within a range less than 3%.

FIG. 22b is a curve diagram of optical distortion of a camera module in a second imaging mode, showing a difference between imaging deformation and an ideal shape. In the figure, five solid curves are respectively colorful light rays on wavelengths of 650 nm, 610 nm, 555 nm, 510 nm, and 470 nm. It can be learned that, in this mode, the optical distortion may be controlled to fall within a range less than 2%.

FIG. 23a and FIG. 23b show a sixth specific camera module. FIG. 23a is a schematic diagram of a structure of the camera module in a first imaging mode. FIG. 23b is a schematic diagram of a structure of the camera module in a second imaging mode. A camera lens of the camera module includes nine lenses having focal power, and the nine lenses are sequentially a first lens L1, a second lens L2, a third lens L3, a fourth lens L4, a fifth lens L5, a sixth lens L6, a seventh lens L7, an eighth lens L8, and a ninth lens L9 from an object side. A variable aperture ST may be specifically located on an object side of the first lens L1, and an optical filter G1 may be located on an image side of the ninth lens L9.

In this embodiment of this disclosure, each lens of the camera lens may be an aspheric lens. In other words, the camera lens includes 18 aspheric surfaces in total. Referring to both Table 11a and Table 11b, Table 11a shows a curvature radius, a thickness, a refractive index, and an Abbe number of each lens of the camera lens, and Table 11b shows an aspheric coefficient of each lens.

TABLE 11a

Curvature

Description
radius
Thickness
Refractive index
Abbe number

ST
Variable
Infinite
d0
−0.271
—
—
—
—

aperture

R1
First lens
3.931
d1
1.482
n1
1.55
v1
71.7

R2

9.659
a1
0.362

R3
Second
32.946
d2
0.165
n2
1.68
v2
18.4

R4
lens
7.817
a2
0.145

R5
Third lens
4.828
d3
0.458
n3
1.54
v3
56.0

R6

8.952
a3
0.105

R7
Fourth lens
5.581
d4
0.273
n4
1.54
v4
56.0

R8

6.705
a4
0.522

R9
Fifth lens
−60.009
d5
0.602
n5
1.51
v5
56.5

R10

−4.598
a5
0.196

R11
Sixth lens
18.315
d6
0.345
n6
1.54
v6
55.9

R12

7.508
a6
0.841

R13
Seventh
6.413
d7
0.671
n7
1.54
v7
56.0

R14
lens
16.211
a7
1.230

R15
Eighth lens
−5.879
d8
0.380
n8
1.54
v8
55.7

R16

7.438
a8
0.314

R17
Ninth lens
17.424
d9
0.237
n9
1.50
v9
81.6

R18

192.884
a9
0.200

R19
Optical
Infinite
d10
0.210
n10
1.52
v9
64.2

R20
filter
Infinite
a10
0.234

TABLE 11b

Type
K
R
A2
A3
A4
A5
A6
A7

R1
Extended
−0.581
2.748
1.32E−01
−5.92E−01
2.19E+00
−6.38E+00
1.32E+01
−1.81E+01

aspheric surface

R2
Extended
−4.538
2.733
1.02E−01
−6.96E−01
3.22E−01
1.35E+00
−3.23E+00
3.60E+00

aspheric surface

R3
Extended
12.979
2.733
4.83E−02
−1.26E+00
2.85E+00
−4.17E+00
5.67E+00
−5.79E+00

aspheric surface

R4
Extended
−1.343
2.726
6.00E−01
−5.73E+00
1.88E+01
−3.47E+01
4.00E+01
−2.96E+01

aspheric surface

R5
Extended
−0.456
2.754
7.36E−01
−5.74E+00
1.60E+01
−2.69E+01
2.68E+01
−1.44E+01

aspheric surface

R6
Extended
1.659
2.734
−2.64E−01
2.13E+00
−7.60E+00
1.14E+01
−7.38E+00
−8.99E−02

aspheric surface

R7
Extended
0.378
2.725
−8.17E−01
2.36E+00
−7.45E+00
1.73E+01
−3.06E+01
3.78E+01

aspheric surface

R8
Extended
0.923
2.706
−3.64E−01
2.30E−02
−2.73E−01
1.26E+00
−6.10E+00
1.43E+01

aspheric surface

R9
Extended
18.388
2.694
3.05E−01
−1.71E+00
7.07E+00
−1.11E+01
−1.97E+00
2.52E+01

aspheric surface

R10
Extended
−0.691
2.698
1.94E+00
−1.03E+01
3.87E+01
−8.53E+01
1.14E+02
−9.91E+01

aspheric surface

R11
Extended
−15.925
2.692
1.92E+00
−1.12E+01
2.94E+01
−4.46E+01
3.98E+01
−2.00E+01

aspheric surface

R12
Extended
3.240
2.781
7.68E−01
−9.45E+00
2.56E+01
−3.83E+01
3.60E+01
−2.22E+01

aspheric surface

R13
Extended
−6.918
2.917
6.39E−01
−3.29E+00
3.01E+00
−2.59E+00
2.19E+00
−1.29E+00

aspheric surface

R14
Extended
−1.909
3.361
1.21E−01
3.45E+00
−2.35E+01
5.38E+01
−7.09E+01
5.99E+01

aspheric surface

R15
Extended
−4.730
3.401
−3.33E+00
8.98E+00
−1.82E+01
2.58E+01
−2.44E+01
1.54E+01

aspheric surface

R16
Extended
−15.400
3.728
−1.96E+00
1.07E+00
−3.41E+00
4.13E+00
−2.57E+00
9.43E−01

aspheric surface

R17
Extended
0.000
3.735
−1.48E+00
−4.82E−01
−1.50E−01
5.64E−03
2.07E−02
1.14E−02

aspheric surface

R18
Extended
0.000
4.146
−1.81E+00
5.13E−01
9.15E−02
−2.23E−02
−6.23E−02
5.68E−02

aspheric surface

Type
K
R
A8
A9
A10
A11
A12
A13

R1
Extended
−0.581
2.748
1.53E+01
−7.52E+00
1.97E+00
−2.13E−01
0.00E+00
0.00E+00

aspheric surface

R2
Extended
−4.538
2.733
−2.20E+00
6.93E−01
−8.78E−02
0.00E+00
0.00E+00
0.00E+00

aspheric surface

R3
Extended
12.979
2.733
3.53E+00
−1.12E+00
1.44E−01
0.00E+00
0.00E+00
0.00E+00

aspheric surface

R4
Extended
−1.343
2.726
1.37E+01
−3.61E+00
4.09E−01
0.00E+00
0.00E+00
0.00E+00

aspheric surface

R5
Extended
−0.456
2.754
3.09E+00
3.14E−01
−1.74E−01
0.00E+00
0.00E+00
0.00E+00

aspheric surface

R6
Extended
1.659
2.734
3.08E+00
−1.77E+00
3.37E−01
0.00E+00
0.00E+00
0.00E+00

aspheric surface

R7
Extended
0.378
2.725
−2.90E+01
1.21E+01
−2.09E+00
0.00E+00
0.00E+00
0.00E+00

aspheric surface

R8
Extended
0.923
2.706
−1.56E+01
7.96E+00
−1.56E+00
0.00E+00
0.00E+00
0.00E+00

aspheric surface

R9
Extended
18.388
2.694
−3.16E+01
1.86E+01
−5.50E+00
6.62E−01
0.00E+00
0.00E+00

aspheric surface

R10
Extended
−0.691
2.698
5.76E+01
−2.25E+01
5.75E+00
−8.68E−01
5.89E−02
0.00E+00

aspheric surface

R11
Extended
−15.925
2.692
4.18E+00
9.05E−01
−7.53E−01
1.70E−01
−1.38E−02
0.00E+00

aspheric surface

R12
Extended
3.240
2.781
9.04E+00
−2.43E+00
4.12E−01
−4.01E−02
1.70E−03
0.00E+00

aspheric surface

R13
Extended
−6.918
2.917
4.73E−01
−1.05E−01
1.31E−02
−7.94E−04
1.34E−05
0.00E+00

aspheric surface

R14
Extended
−1.909
3.361
−3.38E+01
1.28E+01
−3.22E+00
5.16E−01
−4.76E−02
1.92E−03

aspheric surface

R15
Extended
−4.730
3.401
−6.56E+00
1.90E+00
−3.66E−01
4.53E−02
−3.25E−03
1.03E−04

aspheric surface

R16
Extended
−15.400
3.728
−2.10E−01
2.79E−02
−2.00E−03
5.86E−05
0.00E+00
0.00E+00

aspheric surface

R17
Extended
0.000
3.735
9.21E−03
0.00E+00
0.00E+00
0.00E+00
0.00E+00
0.00E+00

aspheric surface

R18
Extended
0.000
4.146
−7.40E−02
0.00E+00
0.00E+00
0.00E+00
0.00E+00
0.00E+00

aspheric surface

In the 18 aspheric surfaces of the camera lens shown in Table 11b, surface types z of all the extended aspheric surfaces may be defined by using but not limited to the following aspheric surface formula:

In this embodiment of this disclosure, the second lens L2 has negative focal power, and a ratio of a focal length f2 of the second lens L2 to a focal length EFL of the camera lens is |f2/EFL|=2.11. The fifth lens L5 has positive focal power, and a ratio of a focal length f5 of the fifth lens to the focal length EFL of the camera lens is |f5/EFL|=1.37. The sixth lens L6 has negative focal power, and a ratio of a focal length f6 of the sixth lens to the focal length EFL of the camera lens is |f6/EFL|=3.33. A ratio of the focal length EFL of the camera lens to a total length (TTL) of the camera lens is |EFL/TTL|=0.788.

With continued reference to FIG. 23a, when the camera module is in the first imaging mode, the camera lens performs imaging in a full area of a photosensitive area, a half-image height Y1 of the camera lens is 5.1 mm, an entrance pupil diameter EPD1 is 3.0 mm, and a quantity F of apertures is 2.36. Referring to FIG. 23b, when the camera module is switched to the second imaging mode, the camera lens performs imaging in a partial area of a photosensitive area, a half-image height Y2 of the camera lens is 2.5 mm, an entrance pupil diameter EPD2 is 5.0 mm, and a quantity F of apertures is 1.42. A ratio of EPD1 to EPD2 is |EPD1/EPD2|=0.6, and a ratio of Y1 to Y2 is |Y1/Y2|=2.04. In addition, when a camera module is in the first imaging mode, a ratio of the half-image height Y1 of the camera lens to the total length (TTL) of the camera lens is |Y1/TTL|=0.57, and a ratio of the entrance pupil diameter EPD1 to the total length (TTL) of the camera lens is |EPD1/TTL|=0.33. For each basic parameter of the camera lens, refer to Table 12.

TABLE 12

Object distance
Infinite far

Focal length EFL (mm)
7.07

First
Value of F
2.36

imaging
Half-image height Y1 (mm)
5.10

mode
Half FOV (°)
35.801

Second
Value of F
1.42

imaging
Half-image height Y2 (mm)
2.50

mode
Half FOV (°)
19.33

BFL (mm)
0.644

TTL (mm)
8.97

Designed wavelength
650 nm, 610 nm, 555 nm,

510 nm, 470 nm

The camera module shown in FIG. 23a and FIG. 23b is simulated. A simulation result of the camera module is described in detail below with reference to accompanying drawings.

FIG. 24a is a curve diagram of an axial chromatic aberration of a camera module in a first imaging mode. Simulation results of a depth of focus location of colorful light rays on wavelengths of 650 nm, 610 nm, 555 nm, 510 nm, and 470 nm are separately shown in the figure. It can be learned that the axial chromatic aberration of a camera lens in the first imaging mode is controlled to fall within a very small range.

FIG. 24b is a curve diagram of an axial chromatic aberration of a camera module in a second imaging mode. Simulation results of a depth of focus location of colorful light rays on wavelengths of 650 nm, 610 nm, 555 nm, 510 nm, and 470 nm are separately shown in the figure. It can be learned that the axial chromatic aberration of a camera lens in the second imaging mode is controlled to fall within a very small range.

FIG. 25a is a curve diagram of a lateral chromatic aberration of a camera module in a first imaging mode. In the figure, five solid curves are respectively colorful light rays on wavelengths of 650 nm, 610 nm, 555 nm, 510 nm, and 470 nm, and dotted lines indicate that a diffraction limit range is from −1.6 μm to 1.6 μm, and it can be learned that all lateral chromatic aberrations of the five light rays fall within the diffraction limit range.

FIG. 25b is a curve diagram of a lateral chromatic aberration of a camera module in a second imaging mode. In the figure, five solid curves are respectively colorful light rays on wavelengths of 650 nm, 610 nm, 555 nm, 510 nm, and 470 nm, and dotted lines indicate that a diffraction limit range is from −0.95 μm to 0.95 μm, and it can be learned that all lateral chromatic aberrations of the five light rays fall within the diffraction limit range.

FIG. 26a is a curve diagram of optical distortion of a camera module in a first imaging mode, showing a difference between imaging deformation and an ideal shape. In the figure, five solid curves are respectively colorful light rays on wavelengths of 650 nm, 610 nm, 555 nm, 510 nm, and 470 nm. It can be learned that, in this mode, the optical distortion may be controlled to fall within a range less than 1%.

FIG. 26b is a curve diagram of optical distortion of a camera module in a second imaging mode, showing a difference between imaging deformation and an ideal shape. In the figure, five solid curves are respectively colorful light rays on wavelengths of 650 nm, 610 nm, 555 nm, 510 nm, and 470 nm. It can be learned that, in this mode, the optical distortion may be controlled to fall within a range less than 1%.

FIG. 27a and FIG. 27b show a seventh specific camera module. FIG. 27a is a schematic diagram of a structure of the camera module in a first imaging mode. FIG. 27b is a schematic diagram of a structure of the camera module in a second imaging mode. A camera lens of the camera module includes six lenses having focal power, and the six lenses are sequentially a first lens L1, a second lens L2, a third lens L3, a fourth lens L4, a fifth lens L5, and a sixth lens L6 from an object side. A variable aperture ST may be specifically located on an object side of the first lens L1, and an optical filter G1 may be located on an image side of the sixth lens L6.

In this embodiment of this disclosure, each lens of the camera lens may be an aspheric lens. In other words, the camera lens includes 12 aspheric surfaces in total. Referring to both Table 13a and Table 13b, Table 13a shows a curvature radius, a thickness, a refractive index, and an Abbe number of each lens of the camera lens, and Table 13b shows an aspheric coefficient of each lens.

TABLE 13a

Curvature

Description
radius
Thickness
Refractive index
Abbe number

ST
Variable
Infinite
d0
−0.320
—
—
—
—

aperture

R1
First lens
2.676
d1
1.342
n1
1.55
v1
71.7

R2

38.043
a1
0.350

R3
Second
59.210
d2
0.304
n2
1.68
v2
18.4

R4
lens
14.710
a2
0.050

R5
Third lens
18.654
d3
0.390
n3
1.68
v3
18.4

R6

6.768
a3
0.433

R7
Fourth
3.686
d4
0.397
n4
1.54
v4
55.9

R8
lens
3.950
a4
0.270

R9
Fifth lens
3.445
d5
1.097
n5
1.54
v5
56.0

R10

7.184
a5
0.751

R11
Sixth lens
−12.095
d6
0.537
n6
1.54
v6
55.7

R12

13.235
a6
0.239

R13
Optical
Infinite
d7
0.210
n7
1.52
v7
64.2

R14
filter
Infinite
a10
0.376

TABLE 13b

Type
K
R
A2
A3
A4
A5
A6
A7
A8
A9
A10

R1
Extended
−0.508
2.056
−3.73E−02
−2.99E−02
−2.42E−02
−2.06E−02
−3.88E−02
−3.57E−02
−2.29E−02
2.42E−02
−6.77E−03

aspheric

surface

R2
Extended
10.392
1.982
−2.45E−01
3.16E−01
−3.62E−01
1.34E−01
2.32E−02
2.06E−02
3.14E−03
−1.25E−02
−2.28E−02

aspheric

surface

R3
Extended
1.971
1.978
−3.80E−01
2.40E−01
2.68E−02
5.50E−02
6.25E−02
5.32E−02
−8.20E−03
−3.22E−02
−4.59E−02

aspheric

surface

R4
Extended
−2.898
1.995
−3.42E−01
5.02E−02
8.21E−02
5.30E−02
2.40E−02
9.00E−02
−7.85E−04
−1.37E−02
−8.19E−02

aspheric

surface

R5
Extended
48.044
1.955
−5.16E−01
1.58E+00
−1.32E+00
4.51E−01
−1.05E−02
2.81E−02
−4.29E−03
−1.08E−03
1.39E−01

aspheric

surface

R6
Extended
4.671
1.821
−6.36E−01
1.32E+00
−6.87E−01
1.96E−01
5.23E−02
−1.62E−01
−2.70E−01
−2.59E−02
6.93E−01

aspheric

surface

R7
Extended
−8.063
1.824
−3.28E−01
4.96E−02
−1.21E−01
3.90E−02
1.09E−01
−2.62E−02
−2.50E−01
−5.45E−03
−1.92E−01

aspheric

surface

R8
Extended
−1.067
1.853
−6.76E−01
3.29E−01
1.61E−01
−1.26E−01
−2.03E−01
−8.91E−02
3.67E−02
8.27E−02
1.05E−02

aspheric

surface

R9
Extended
−11.593
1.854
−1.60E−01
−2.00E−01
3.17E−01
−7.40E−02
−2.94E−01
7.90E−03
1.54E−01
5.43E−02
−6.26E−02

aspheric

surface

R10
Extended
−32.272
1.803
−3.72E−02
−3.17E−03
−5.99E−04
−3.80E−03
−3.08E−04
5.13E−04
1.17E−04
5.33E−06
−3.21E−05

aspheric

surface

R11
Extended
−9.720
1.797
−2.48E−01
1.70E−01
−3.58E−02
2.85E−03
−2.33E−04
2.47E−06
−1.48E−06
−4.34E−07
−8.14E−07

aspheric

surface

R12
Extended
−100.000
1.947
−7.28E−03
−9.73E−02
2.15E−02
3.19E−03
1.55E−04
−1.58E−05
−3.20E−05
−9.22E−06
−2.75E−06

aspheric

surface

In the 12 aspheric surfaces of the camera lens shown in Table 13b, surface types z of all the extended aspheric surfaces may be defined by using but not limited to the following aspheric surface formula:

$z = \frac{{cr}^{2}}{1 + \sqrt{1 - {Kc}^{2} r^{2}}} + A_{2} r^{4} + A_{3} r^{6} + A_{4} r^{8} + A_{5} r^{10} + A_{6} r^{12} + A_{7} r^{14} + A_{8} r^{16} + A_{9} r^{18} + A_{10} r^{20}$

In this embodiment of this disclosure, the second lens L2 has negative focal power, and a ratio of a focal length f2 of the second lens L2 to a focal length EFL of the camera lens is |f2/EFL|=5.23. The third lens L3 has negative focal power, and a ratio of a focal length f3 of the third lens to the focal length EFL of the camera lens is |f3/EFL|=2.87. The fourth lens L4 has positive focal power, and a ratio of a focal length f4 of the fourth lens to the focal length EFL of the camera lens is |f4/EFL|=12.04. A ratio of the focal length EFL of the camera lens to a total length (TTL) of the camera lens is |EFL/TTL|=0.81.

With continued reference to FIG. 27a, when the camera module is in the first imaging mode, the camera lens performs imaging in a full area of a photosensitive area, a half-image height Y1 of the camera lens is 3.8 mm, an entrance pupil diameter EPD1 is 3.0 mm, and a quantity F of apertures is 1.79. Referring to FIG. 27b, when the camera module is switched to the second imaging mode, the camera lens performs imaging in a partial area of a photosensitive area, a half-image height Y2 of the camera lens is 2.0 mm, an entrance pupil diameter EPD2 is 3.8 mm, and a quantity F of apertures is 1.41. A ratio of EPD1 to EPD2 is |EPD1/EPD2|=0.789, and a ratio of Y1 to Y2 is |Y1/Y2|=1.9. In addition, when a camera module is in the first imaging mode, a ratio of the half-image height Y1 of the camera lens to the total length (TTL) of the camera lens is |Y1/TTL|=0.56, and a ratio of the entrance pupil diameter EPD1 to the total length (TTL) of the camera lens is |EPD1/TTL|=0.445. For each basic parameter of the camera lens, refer to Table 12.

TABLE 14

Object distance
Infinite far

Focal length EFL (mm)
5.47

First
Value of F
1.79

imaging
Half-image height Y1 (mm)
3.80

mode
Half FOV (°)
34.467

Second
Value of F
1.41

imaging
Half-image height Y2 (mm)
2.00

mode
Half FOV (°)
19.943

BFL (mm)
0.825

TTL (mm)
6.74

Designed wavelength
650 nm, 610 nm, 555 nm,

510 nm, 470 nm

The camera module shown in FIG. 27a and FIG. 27b is simulated. A simulation result of the camera module is described in detail below with reference to accompanying drawings.

FIG. 28a is a curve diagram of an axial chromatic aberration of a camera module in a first imaging mode. Simulation results of a depth of focus location of colorful light rays on wavelengths of 650 nm, 610 nm, 555 nm, 510 nm, and 470 nm are separately shown in the figure. It can be learned that the axial chromatic aberration of a camera lens in the first imaging mode is controlled to fall within a very small range.

FIG. 28b is a curve diagram of an axial chromatic aberration of a camera module in a second imaging mode. Simulation results of a depth of focus location of colorful light rays on wavelengths of 650 nm, 610 nm, 555 nm, 510 nm, and 470 nm are separately shown in the figure. It can be learned that the axial chromatic aberration of a camera lens in the second imaging mode is controlled to fall within a very small range.

FIG. 29a is a curve diagram of a lateral chromatic aberration of a camera module in a first imaging mode. In the figure, five solid curves are respectively colorful light rays on wavelengths of 650 nm, 610 nm, 555 nm, 510 nm, and 470 nm, and dotted lines indicate that a diffraction limit range is from −1.2 μm to 1.2 μm, and it can be learned that all lateral chromatic aberrations of the five light rays fall within the diffraction limit range.

FIG. 29b is a curve diagram of a lateral chromatic aberration of a camera module in a second imaging mode. In the figure, five solid curves are respectively colorful light rays on wavelengths of 650 nm, 610 nm, 555 nm, 510 nm, and 470 nm, and dotted lines indicate that a diffraction limit range is from −0.95 μm to 0.95 μm, and it can be learned that lateral chromatic aberrations of the five light rays basically fall within the diffraction limit range.

FIG. 30a is a curve diagram of optical distortion of a camera module in a first imaging mode, showing a difference between imaging deformation and an ideal shape. In the figure, five solid curves are respectively colorful light rays on wavelengths of 650 nm, 610 nm, 555 nm, 510 nm, and 470 nm. It can be learned that, in this mode, the optical distortion may be controlled to fall within a range less than 1.2%.

FIG. 30b is a curve diagram of optical distortion of a camera module in a second imaging mode, showing a difference between imaging deformation and an ideal shape. In the figure, five solid curves are respectively colorful light rays on wavelengths of 650 nm, 610 nm, 555 nm, 510 nm, and 470 nm. It can be learned that, in this mode, the optical distortion may be controlled to fall within a range less than 1.2%.

FIG. 31a and FIG. 31b show an eighth specific camera module. FIG. 31a is a schematic diagram of a structure of the camera module in a first imaging mode. FIG. 31b is a schematic diagram of a structure of the camera module in a second imaging mode. A camera lens of the camera module includes five lenses having focal power, and the five lenses are sequentially a first lens L1, a second lens L2, a third lens L3, a fourth lens L4, and a fifth lens L5 from an object side. A variable aperture ST may be specifically located between the first lens L1 and the second lens L2, and an optical filter G1 may be located on an image side of the fifth lens L6.

In this embodiment of this disclosure, each lens of the camera lens may be an aspheric lens. In other words, the camera lens includes 10 aspheric surfaces in total. Referring to both Table 15a and Table 15b, Table 15a shows a curvature radius, a thickness, a refractive index, and an Abbe number of each lens of the camera lens, and Table 15b shows an aspheric coefficient of each lens.

TABLE 15a

Curvature

Description
radius
Thickness
Refractive index
Abbe number

R1
First lens
4.803
d1
1.027
n1
1.55
v1
71.7

R2

96.016
a1
0.049

ST
Variable
Infinite
d0
−0.320
—
—
—
—

aperture

R3
Second
5.429
d2
0.645
n2
1.68
v2
18.4

R4
lens
3.161
a2
0.130

R5
Third lens
4.916
d3
1.597
n3
1.54
v3
55.9

R6

7.486
a3
0.139

R7
Fourth lens
2.661
d4
0.726
n4
1.54
v4
56.0

R8

6.771
a4
0.989

R9
Fifth lens
−103.866
d5
1.993
n5
1.54
v5
55.7

R11

4.415
a5
0.403

R11
Optical
Infinite
d6
0.210
n6
1.52
v6
64.2

R12
filter
Infinite
a6
0.361

TABLE 15b

Type
K
R
A2
A3
A4
A5
A6
A7

R1
Extended
0.000
1.890
−7.86E−02
−3.45E−02
−1.45E−02
−2.46E−03
8.79E−04
1.50E−03

aspheric surface

R2
Extended
0.000
1.578
−3.29E−02
−1.25E−02
−4.95E−04
7.90E−04
3.99E−04
9.75E−05

aspheric surface

R3
Extended
0.000
1.843
−4.38E−02
−3.94E−03
−2.67E−03
6.99E−04
2.26E−03
1.28E−03

aspheric surface

R4
Extended
0.000
1.995
−1.20E−01
−2.07E−02
−1.59E−02
−1.35E−02
−9.65E−03
−1.10E−02

aspheric surface

R5
Extended
0.000
2.373
5.64E−02
8.78E−02
9.22E−02
4.93E−02
−1.10E−01
−2.32E−01

aspheric surface

R6
Extended
0.000
2.572
−1.52E+00
1.09E+00
1.02E+00
−7.93E−01
−1.11E+00
8.93E−01

aspheric surface

R7
Extended
0.000
2.987
−2.07E+00
−6.87E−01
−1.83E+00
−4.08E−01
−1.20E+00
−6.86E+00

aspheric surface

R8
Extended
0.000
3.389
2.30E+00
−8.99E+00
−4.00E−01
8.98E+00
1.10E+01
−3.81E+00

aspheric surface

R9
Extended
0.000
4.309
−8.54E+00
2.57E+00
1.67E+01
6.63E+00
−1.65E+02
−4.77E+02

aspheric surface

R10
Extended
0.000
4.930
−9.42E+00
1.51E+01
−2.09E+01
1.08E+01
5.02E−01
−2.24E+01

aspheric surface

Type
K
R
A8
A9
A10
A11
A12
A13

R1
Extended
0.000
1.890
8.85E−04
3.82E−04
−1.13E−04
−1.72E−04
0.00E+00
0.00E+00

aspheric surface

R2
Extended
0.000
1.578
−2.65E−05
−2.39E−05
2.36E−06
0.00E+00
0.00E+00
0.00E+00

aspheric surface

R3
Extended
0.000
1.843
−2.54E−04
−7.68E−04
−5.21E−04
0.00E+00
0.00E+00
0.00E+00

aspheric surface

R4
Extended
0.000
1.995
−1.03E−02
−3.95E−03
7.80E−03
0.00E+00
0.00E+00
0.00E+00

aspheric surface

R5
Extended
0.000
2.373
−1.31E−01
1.53E−01
4.31E−01
2.28E−01
−7.03E−01
0.00E+00

aspheric surface

R6
Extended
0.000
2.572
1.95E+00
8.65E−01
7.99E+00
2.21E+01
−4.70E+01
0.00E+00

aspheric surface

R7
Extended
0.000
2.987
−7.35E+00
4.24E+01
1.01E+02
5.70E+01
−3.83E+02
0.00E+00

aspheric surface

R8
Extended
0.000
3.389
−4.53E+01
−5.69E+01
2.40E+01
4.63E+02
6.63E+02
−1.71E+03

aspheric surface

R9
Extended
0.000
4.309
−1.07E+03
2.78E+03
1.98E+04
9.83E+04
−1.31E+05
−4.09E+05

aspheric surface

R10
Extended
0.000
4.930
3.00E+00
1.72E+01
1.04E+02
−1.21E+02
0.00E+00
0.00E+00

aspheric surface

In the 10 aspheric surfaces of the camera lens shown in Table 15b, surface types z of all the extended aspheric surfaces may be defined by using but not limited to the following aspheric surface formula:

In this embodiment of this disclosure, the second lens L2 has negative focal power, and a ratio of a focal length f2 of the second lens L2 to a focal length EFL of the camera lens is |f2/EFL|=1.97. The third lens L3 has positive focal power, and a ratio of a focal length f3 of the third lens to the focal length EFL of the camera lens is |f3/EFL|=3.41. The fourth lens L4 has positive focal power, and a ratio of a focal length f4 of the fourth lens to the focal length EFL of the camera lens is |f4/EFL|=1.20. A ratio of the focal length EFL of the camera lens to a total length (TTL) of the camera lens is |EFL/TTL|=0.74.

With continued reference to FIG. 31a, when the camera module is in the first imaging mode, the camera lens performs imaging in a full area of a photosensitive area, a half-image height Y1 of the camera lens is 5.0 mm, an entrance pupil diameter EPD1 is 3.27 mm, and a quantity F of apertures is 1.94. Referring to FIG. 31b, the camera module is switched to the second imaging mode, the camera lens performs imaging in a partial area of a photosensitive area, a half-image height Y2 of the camera lens is 2.5 mm, an entrance pupil diameter EPD2 is 4.36 mm, and a quantity F of apertures is 1.45. A ratio of EPD1 to EPD2 is |EPD1/EPD2|=0.75, and a ratio of Y1 to Y2 is |Y1/Y2|=2. In addition, when a camera module is in the first imaging mode, a ratio of the half-image height Y1 of the camera lens to the total length (TTL) of the camera lens is |Y1/TTL|=0.59, and a ratio of the entrance pupil diameter EPD1 to the total length (TTL) of the camera lens is |EPD1/TTL|=0.39. For each basic parameter of the camera lens, refer to Table 16.

TABLE 16

Object distance
Infinite far

Focal length EFL (mm)
6.3

First
Value of F
1.94

imaging
Half-image height Y1 (mm)
5.00

mode
Half FOV (°)
38.162

Second
Value of F
1.45

imaging
Half-image height Y2 (mm)
2.50

mode
Half FOV (°)
21.202

BFL (mm)
0.975

TTL (mm)
8.47

Designed wavelength
650 nm, 610 nm, 555 nm,

510 nm, 470 nm

The camera module shown in FIG. 31a and FIG. 31b is simulated. A simulation result of the camera module is described in detail below with reference to accompanying drawings.

FIG. 32a is a curve diagram of an axial chromatic aberration of a camera module in a first imaging mode. Simulation results of a depth of focus location of colorful light rays on wavelengths of 650 nm, 610 nm, 555 nm, 510 nm, and 470 nm are separately shown in the figure. It can be learned that the axial chromatic aberration of a camera lens in the first imaging mode is controlled to fall within a very small range.

FIG. 32b is a curve diagram of an axial chromatic aberration of a camera module in a second imaging mode. Simulation results of a depth of focus location of colorful light rays on wavelengths of 650 nm, 610 nm, 555 nm, 510 nm, and 470 nm are separately shown in the figure. It can be learned that the axial chromatic aberration of a camera lens in the second imaging mode is controlled to fall within a very small range.

FIG. 33a is a curve diagram of a lateral chromatic aberration of a camera module in a first imaging mode. In the figure, five solid curves are respectively colorful light rays on wavelengths of 650 nm, 610 nm, 555 nm, 510 nm, and 470 nm, and dotted lines indicate that a diffraction limit range is from −1.3 μm to 1.3 μm, and it can be learned that all lateral chromatic aberrations of the five light rays fall within the diffraction limit range.

FIG. 33b is a curve diagram of a lateral chromatic aberration of a camera module in a second imaging mode. In the figure, five solid curves are respectively colorful light rays on wavelengths of 650 nm, 610 nm, 555 nm, 510 nm, and 470 nm, and dotted lines indicate that a diffraction limit range is from −0.98 μm to 0.98 μm, and it can be learned that all lateral chromatic aberrations of the five light rays fall within the diffraction limit range.

FIG. 34a is a curve diagram of optical distortion of a camera module in a first imaging mode, showing a difference between imaging deformation and an ideal shape. In the figure, five solid curves are respectively colorful light rays on wavelengths of 650 nm, 610 nm, 555 nm, 510 nm, and 470 nm. It can be learned that, in this mode, the optical distortion may be controlled to fall within a range less than 2.5%.

FIG. 34b is a curve diagram of optical distortion of a camera module in a second imaging mode, showing a difference between imaging deformation and an ideal shape. In the figure, five solid curves are respectively colorful light rays on wavelengths of 650 nm, 610 nm, 555 nm, 510 nm, and 470 nm. It can be learned that, in this mode, the optical distortion may be controlled to fall within a range less than 2.5%.

FIG. 35a and FIG. 35b show a ninth specific camera module. FIG. 35a is a schematic diagram of a structure of the camera module in a first imaging mode. FIG. 35b is a schematic diagram of a structure of the camera module in a second imaging mode. A camera lens of the camera module includes seven lenses having focal power, and the seven lenses are sequentially a first lens L1, a second lens L2, a third lens L3, a fourth lens L4, a fifth lens L5, a sixth lens L6, and a seventh lens L7 from an object side. A variable aperture ST may be specifically located on an object side of the first lens L1, and an optical filter G1 may be located on an image side of the seventh lens L7.

In this embodiment of this disclosure, each lens of the camera lens may be an aspheric lens. In other words, the camera lens includes 14 aspheric surfaces in total. Referring to both Table 17a and Table 17b, Table 17a shows a curvature radius, a thickness, a refractive index, and an Abbe number of each lens of the camera lens, and Table 17b shows an aspheric coefficient of each lens.

TABLE 17a

Curvature

Description
radius
Thickness
Refractive index
Abbe number

ST
Variable
Infinite
d0
−0.200
—
—
—
−

aperture

R1
First lens
3.634
d1
0.671
n1
1.55
v1
71.7

R2

9.478
a1
0.525

R3
Second
13.881
d2
0.158
n2
1.68
v2
18.4

R4
lens
6.331
a2
0.294

R5
Third lens
4.653
d3
0.596
n3
1.54
v3
56.0

R6

10.400
a3
0.739

R7
Fourth
−48.384
d4
0.589
n4
1.54
v4
56.0

R8
lens
−4.170
a4
0.343

R9
Fifth lens
18.758
d5
0.287
n5
1.51
v5
56.5

R11

5.615
a5
0.798

R11
Sixth lens
6.841
d6
0.801
n6
1.54
v6
55.9

R12

18.362
a6
1.177

R13
Seventh
−10.994
d7
0.561
n7
1.54
v7
56.0

R14
lens
4.053
a7
0.260

R15
Optical
Infinity
d8
0.210
n8
1.54
v8
55.7

R16
filter
Infinity
a8
0.498

TABLE 17b

Type
K
R
A2
A3
A4
A5
A6
A7

R1
Extended
−1.027
1.626
2.08E−02
−6.00E−02
8.76E−02
−1.09E−01
9.06E−02
−5.04E−02

aspheric surface

R2
Extended
−1.524
1.722
2.16E−02
−2.11E−01
2.90E−01
−2.40E−01
1.27E−01
−4.15E−02

aspheric surface

R3
Extended
−17.630
1.926
3.77E−01
−2.79E+00
6.89E+00
−8.84E+00
6.67E+00
−3.08E+00

aspheric surface

R4
Extended
0.113
1.998
5.88E−01
−4.30E+00
1.14E+01
−1.57E+01
1.28E+01
−6.43E+00

aspheric surface

R5
Extended
0.055
2.289
3.52E−01
−2.89E+00
5.86E+00
−5.50E+00
1.99E+00
5.71E−01

aspheric surface

R6
Extended
−6.837
2.326
1.93E−01
−1.09E+00
−1.06E+00
7.90E+00
−1.45E+01
1.48E+01

aspheric surface

R7
Extended
88.851
2.454
7.38E−01
−1.89E+00
1.34E+00
−3.52E+00
1.07E+01
−1.60E+01

aspheric surface

R8
Extended
−0.227
2.490
2.15E+00
−7.35E+00
1.57E+01
−3.23E+01
5.68E+01
−7.14E+01

aspheric surface

R9
Extended
−46.344
2.618
1.81E+00
−1.01E+01
2.41E+01
−5.52E+01
1.14E+02
−1.64E+02

aspheric surface

R10
Extended
−0.265
2.741
−1.46E−01
−3.56E+00
1.82E+00
8.39E+00
−1.56E+01
1.26E+01

aspheric surface

R11
Extended
−8.626
2.763
−5.20E−01
−1.68E+00
2.95E+00
−6.56E+00
8.70E+00
−6.39E+00

aspheric surface

R12
Extended
−109.953
3.050
−5.91E−01
−3.12E+00
5.59E+00
−7.78E+00
8.47E+00
−6.53E+00

aspheric surface

R13
Extended
8.800
3.060
−5.72E+00
1.04E+01
−1.90E+01
3.61E+01
−4.96E+01
4.22E+01

aspheric surface

R14
Extended
−18.479
4.425
−1.16E+01
3.75E+01
−7.12E+01
8.73E+01
−7.69E+01
5.02E+01

aspheric surface

Type
K
R
A8
A9
A10
A11
A12
A13

R1
Extended
−1.027
1.626
1.82E−02
−4.01E−03
4.81E−04
−2.41E−05
0.00E+00
0.00E+00

aspheric surface

R2
Extended
−1.524
1.722
7.99E−03
−8.27E−04
3.53E−05
0.00E+00
0.00E+00
0.00E+00

aspheric surface

R3
Extended
−17.630
1.926
8.60E−01
−1.33E−01
8.76E−03
0.00E+00
0.00E+00
0.00E+00

aspheric surface

R4
Extended
0.113
1.998
1.98E+00
−3.43E−01
2.56E−02
0.00E+00
0.00E+00
0.00E+00

aspheric surface

R5
Extended
0.055
2.289
−7.47E−01
2.35E−01
−2.54E−02
0.00E+00
0.00E+00
0.00E+00

aspheric surface

R6
Extended
−6.837
2.326
−8.85E+00
2 .90E+00
−3.95E−01
0.00E+00
0.00E+00
0.00E+00

aspheric surface

R7
Extended
88.851
2.454
1.47E+01
−8.92E+00
3.23E+00
−5.05E−01
0.00E+00
0.00E+00

aspheric surface

R8
Extended
−0.227
2.490
6.09E+01
−3.46E+01
1.25E+01
−2.62E+00
2.39E−01
0.00E+00

aspheric surface

R9
Extended
−46.344
2.618
1.49E+02
−8.48E+01
2.94E+01
−5.70E+00
4.72E−01
0.00E+00

aspheric surface

R11
Extended
−0.265
2.741
−5.75E+00
1.55E+00
−2.37E−01
1.78E−02
−4.09E−04
0.00E+00

aspheric surface

R11
Extended
−8.626
2.763
2.76E+00
−7.11E−01
1.05E−01
−7.61E−03
1.74E−04
0.00E+00

aspheric surface

R12
Extended
−109.953
3.050
3.42E+00
−1.20E+00
2.77E−01
−3.97E−02
3.20E−03
−1.09E−04

aspheric surface

R13
Extended
8.800
3.060
−2.25E+01
7.71E+00
−1.70E+00
2.34E−01
−1.82E−02
6.19E−04

aspheric surface

R14
Extended
−18.479
4.425
−2.39E+01
7.70E+00
−1.46E+00
1.20E−01
0.00E+00
0.00E+00

aspheric surface

In the 14 aspheric surfaces of the camera lens shown in Table 17b, surface types z of all the extended aspheric surfaces may be defined by using but not limited to the following aspheric surface formula:

In this embodiment of this disclosure, the second lens L2 has negative focal power, and a ratio of a focal length f2 of the second lens L2 to a focal length EFL of the camera lens is |f2/EFL|=2.51. The fifth lens L5 has negative focal power, and a ratio of a focal length f5 of the fifth lens to the focal length EFL of the camera lens is |f5/EFL|=1.81. The sixth lens L6 has negative focal power, and a ratio of a focal length f6 of the sixth lens to the focal length EFL of the camera lens is |f6/EFL|=2.31. A ratio of the focal length EFL of the camera lens to a total length (TTL) of the camera lens is |EFL/TTL|=0.814.

With continued reference to FIG. 35a, when the camera module is in the first imaging mode, the camera lens performs imaging in a full area of a photosensitive area, a half-image height Y1 of the camera lens is 5.8 mm, an entrance pupil diameter EPD1 is 3.0 mm, and a quantity F of apertures is 2.31. Referring to FIG. 35b, when the camera module is switched to the second imaging mode, the camera lens performs imaging in a partial area of a photosensitive area, a half-image height Y2 of the camera lens is 2.9 mm, an entrance pupil diameter EPD2 is 4.35 mm, and a quantity F of apertures is 1.59. A ratio of EPD1 to EPD2 is |EPD1/EPD2|=0.69, and a ratio of Y1 to Y2 is |Y1/Y2|=2.0. In addition, when a camera module is in the first imaging mode, a ratio of the half-image height Y1 of the camera lens to the total length (TTL) of the camera lens is |Y1/TTL|=0.682, and a ratio of the entrance pupil diameter EPD1 to the total length (TTL) of the camera lens is |EPD1/TTL|=0.353. For each basic parameter of the camera lens, refer to Table 18.

TABLE 18

Object distance
Infinite far

Focal length EFL (mm)
6.92

First
Value of F
2.31

imaging
Half-image height Y1 (mm)
5.80

mode
Half FOV (°)
39.848

Second
Value of F
1.59

imaging
Half-image height Y2 (mm)
2.90

mode
Half FOV (°)
22.348

BFL (mm)
0.967

TTL (mm)
8.50

Designed wavelength
650 nm, 610 nm, 555 nm,

510 nm, 470 nm

The camera module shown in FIG. 35a and FIG. 35b is simulated. A simulation result of the camera module is described in detail below with reference to accompanying drawings.

FIG. 36a is a curve diagram of an axial chromatic aberration of a camera module in a first imaging mode. Simulation results of a depth of focus location of colorful light rays on wavelengths of 650 nm, 610 nm, 555 nm, 510 nm, and 470 nm are separately shown in the figure. It can be learned that the axial chromatic aberration of a camera lens in the first imaging mode is controlled to fall within a very small range.

FIG. 36b is a curve diagram of an axial chromatic aberration of a camera module in a second imaging mode. Simulation results of a depth of focus location of colorful light rays on wavelengths of 650 nm, 610 nm, 555 nm, 510 nm, and 470 nm are separately shown in the figure. It can be learned that the axial chromatic aberration of a camera lens in the second imaging mode is controlled to fall within a very small range.

FIG. 37a is a curve diagram of a lateral chromatic aberration of a camera module in a first imaging mode. In the figure, five solid curves are respectively colorful light rays on wavelengths of 650 nm, 610 nm, 555 nm, 510 nm, and 470 nm, and dotted lines indicate that a diffraction limit range is from −1.55 μm to 1.55 μm, and it can be learned that lateral chromatic aberrations of the five light rays basically fall within the diffraction limit range.

FIG. 37b is a curve diagram of a lateral chromatic aberration of a camera module in a second imaging mode. In the figure, five solid curves are respectively colorful light rays on wavelengths of 650 nm, 610 nm, 555 nm, 510 nm, and 470 nm, and dotted lines indicate that a diffraction limit range is from −1.1 μm to 1.1 μm, and it can be learned that all lateral chromatic aberrations of the five light rays fall within the diffraction limit range.

FIG. 38a is a curve diagram of optical distortion of a camera module in a first imaging mode, showing a difference between imaging deformation and an ideal shape. In the figure, five solid curves are respectively colorful light rays on wavelengths of 650 nm, 610 nm, 555 nm, 510 nm, and 470 nm. It can be learned that, in this mode, the optical distortion may be controlled to fall within a range less than 2%.

FIG. 38b is a curve diagram of optical distortion of a camera module in a second imaging mode, showing a difference between imaging deformation and an ideal shape. In the figure, five solid curves are respectively colorful light rays on wavelengths of 650 nm, 610 nm, 555 nm, 510 nm, and 470 nm. It can be learned that, in this mode, the optical distortion may be controlled to fall within a range less than 2%.

It can be learned from structures and simulation effects of the first specific zoom lens, the second specific zoom lens, the third specific zoom lens, the fourth specific zoom lens, the fifth specific zoom lens, the sixth specific zoom lens, the seventh specific zoom lens, the eighth specific zoom lens, and the ninth specific zoom lens that the camera module provided in the embodiments of this disclosure can achieve good imaging effects in each of the two different imaging modes.

Referring to FIG. 39, an embodiment of this disclosure further provides an electronic device 100. The electronic device 100 may be a common terminal such as a mobile phone, a tablet computer, or a notebook computer in the conventional technology. The electronic device 100 includes a housing 110 and a camera module 120 in any one of the foregoing embodiments. The camera module 120 may be disposed inside the housing 110. The camera module 120 of the electronic device 100 may simultaneously implement full-pixel 1× imaging and central-pixel 2× or 3× imaging by using one camera lens, so that the camera module occupies less space in the electronic device 100 and appearance quality of the electronic device 100 is improved.

The foregoing descriptions are merely specific implementations of this disclosure, but are not intended to limit the protection scope of this disclosure. Any variation or replacement readily figured out by a person skilled in the art within the technical scope disclosed in this disclosure shall fall within the protection scope of this disclosure. Therefore, the protection scope of this disclosure shall be subject to the protection scope of the claims.

	Number	Date	Country
Parent	PCT/CN2021/084783	Mar 2021	US
Child	17955686		US

CAMERA MODULE AND ELECTRONIC DEVICE

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