Camera Optical Lens

FIELD OF THE PRESENT INVENTION

The present invention relates to the field of optical lens, and more particularly, to a camera optical lens suitable for handheld terminal devices, such as smart phones and digital cameras, and imaging devices, such as monitors or PC lenses.

DESCRIPTION OF RELATED ART

In recent years, with the rise of various smart devices, the demand for miniaturized camera optics has been increasing, and the pixel size of photosensitive devices has shrunk, coupled with the development trend of electronic products with good functions, thin and portable appearance. Therefore, miniaturized imaging optical lenses with good image quality have become the mainstream in the current market. In order to obtain better imaging quality, a multi-piece lenses structure is often used. Moreover, with the development of technology and the increase of diversified needs of users, as the pixel area of the photosensitive device continues to shrink and the system's requirements for image quality continue to increase, the five-element lenses structure gradually appears in the lens design. There is an urgent need for a wide-angle imaging lens with excellent optical characteristics, small size, and fully corrected aberrations.

SUMMARY

In the present invention, a cameral optical lens has excellent optical characteristics with large aperture, ultra-thin and wide angle.

According to one aspect of the present invention, a camera optical lens comprises, from an object side to an image side in sequence, a first lens having a positive refractive power, a second lens having a refractive power, a third lens having a refractive power, a fourth lens having a positive refractive power, and a fifth lens having a negative refractive power. The camera optical lens satisfies the following conditions: 0.70≤f1/f≤1.00, 3.00≤R3/R4≤15.00, 2.00≤R6/R5≤10.00, −12.00≤R7/R8≤−1.50, and −15.00≤R9/R10≤−3.00. f denotes a focal length of the camera optical lens, f1 denotes a focal length of the first lens, R3 denotes a central curvature radius of an object side surface of the second lens, R4 denotes a central curvature radius of an image side surface of the second lens, R5 denotes a central curvature radius of an object side surface of the third lens, R6 denotes a central curvature radius of an image side surface of the third lens, R7 denotes a central curvature radius of an object side surface of the fourth lens, R8 denotes a central curvature radius of an image side surface of the fourth lens, R9 denotes a central curvature radius of an object side surface of the fifth lens, and R10 denotes a central curvature radius of an image side surface of the fifth lens.

As an improvement, the camera optical lens further satisfies the following condition: 1.00≤d5/d6≤3.00. d5 denotes an on-axis thickness of the third lens, and d6 denotes an on-axis distance from the image side surface of the third lens to the object side surface of the fourth lens.

As an improvement, the first lens has an object side surface being convex in a paraxial region. The camera optical lens further satisfies the following conditions: −4.81≤(R1+R2)/(R1−R2)≤−0.62 and 0.06≤d1/TTL≤0.22. R1 denotes a central curvature radius of an object side surface of the first lens, R2 denotes a central curvature radius of the image side surface of the first lens, d1 denotes an on-axis thickness of the first lens, and TTL denotes a total optical length from the object side surface of the first lens of the camera optical lens to an image surface of the camera optical lens along an optical axis.

As an improvement, the camera optical lens further satisfies the following conditions: −4.99≤f2/f≤169.64, 0.57≤(R3+R4)/(R3−R4)≤3.00, and 0.02≤d3/TTL≤0.11. f2 denotes a focal length of the second lens, d3 denotes an on-axis thickness of the second lens, and TTL denotes a total optical length from an object side surface of the first lens of the camera optical lens to an image surface of the camera optical lens along an optical axis.

As an improvement, the camera optical lens further satisfies the following conditions: f3/f≥−16.04, −5.97≤(R5+R6)/(R5−R6)≤−0.81, and 0.05≤d5/TTL≤0.24. f3 denotes a focal length of the third lens, d5 denotes an on-axis thickness of the third lens, and TTL denotes a total optical length from an object side surface of the first lens of the camera optical lens to an image surface of the camera optical lens along an optical axis.

As an improvement, the object side surface of the fourth lens is convex in a paraxial region and the image side surface of the fourth lens is convex in the paraxial region. The camera optical lens further satisfies the following conditions: 0.33≤f4/f≤1.29, 0.10≤(R7+R8)/(R7−R8)≤1.27, and 0.05≤d7/TTL≤0.20. f4 denotes a focal length of the fourth lens, d7 denotes an on-axis thickness of the fourth lens, and TTL denotes a total optical length from an object side surface of a first lens of the camera optical lens to an image surface of the camera optical lens along an optical axis.

As an improvement, the object side surface of the fifth lens is concave in a paraxial region and the image side surface of the fifth lens is concave in the paraxial region. The camera optical lens further satisfies the following conditions: −1.19≤5/f≤−0.38, 0.25≤(R9+R10)/(R9−R10)≤1.31, and 0.04≤d9/TTL≤0.15. f5 denotes a focal length of the fifth lens, d9 denotes an on-axis thickness of the fifth lens, and TTL denotes a total optical length from an object side surface of the first lens of the camera optical lens to an image surface of the camera optical lens along an optical axis.

As an improvement, the camera optical lens further satisfies the following condition: 0.49≤f12/f≤1.82. f12 denotes a combined focal length of the first lens and the second lens.

As an improvement, the camera optical lens further satisfies the following condition: FOV≥74.68°. FOV denotes a field of view of the camera optical lens in a diagonal direction.

As an improvement, the camera optical lens further satisfies following condition: TTL/IH≤1.52. IH denotes an image height of the camera optical lens, and TTL denotes a total optical length from an object side surface of the first lens of the camera optical lens to an image surface of the camera optical lens along an optical axis

BRIEF DESCRIPTION OF THE DRAWINGS

In order to explain the technical solutions in the embodiments of the present invention more clearly, the following will briefly introduce the drawings that need to be used in the description of the embodiments. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative work, other drawings can be obtained based on these drawings, among which:

FIG. 1 is a schematic diagram of a structure of a camera optical lens in accordance with Embodiment 1 of the present invention;

FIG. 2 is a schematic diagram of a longitudinal aberration of the camera optical lens shown in FIG. 1;

FIG. 3 is a schematic diagram of a lateral color of the camera optical lens shown in FIG. 1;

FIG. 4 is a schematic diagram of a field curvature and a distortion of the camera optical lens shown in FIG. 1;

FIG. 5 is a schematic diagram of a structure of a camera optical lens in accordance with Embodiment 2 of the present invention;

FIG. 6 is a schematic diagram of a longitudinal aberration of the camera optical lens shown in FIG. 5;

FIG. 7 is a schematic diagram of a lateral color of the camera optical lens shown in FIG. 5;

FIG. 8 is a schematic diagram of a field curvature and a distortion of the camera optical lens shown in FIG. 5;

FIG. 9 is a schematic diagram of a structure of a camera optical lens in accordance with Embodiment 3 of the present invention;

FIG. 10 is a schematic diagram of a longitudinal aberration of the camera optical lens shown in FIG. 9;

FIG. 11 is a schematic diagram of a lateral color of the camera optical lens shown in FIG. 9; and

FIG. 12 is a schematic diagram of a field curvature and a distortion of the camera optical lens shown in FIG. 9.

FIG. 13 is a schematic diagram of a structure of a camera optical lens in accordance with Embodiment 4 of the present invention;

FIG. 14 is a schematic diagram of a longitudinal aberration of the camera optical lens shown in FIG. 13;

FIG. 15 is a schematic diagram of a lateral color of the camera optical lens shown in FIG. 13;

FIG. 16 is a schematic diagram of a field curvature and a distortion of the camera optical lens shown in FIG. 13.

FIG. 17 is a schematic diagram of a structure of a camera optical lens in accordance with Embodiment 5 of the present invention;

FIG. 18 is a schematic diagram of a longitudinal aberration of the camera optical lens shown in FIG. 17;

FIG. 19 is a schematic diagram of a lateral color of the camera optical lens shown in FIG. 17;

FIG. 20 is a schematic diagram of a field curvature and a distortion of the camera optical lens shown in FIG. 17.

FIG. 21 is a schematic diagram of a structure of a camera optical lens in accordance with comparative Embodiment;

FIG. 22 is a schematic diagram of a longitudinal aberration of the camera optical lens shown in FIG. 21;

FIG. 23 is a schematic diagram of a lateral color of the camera optical lens shown in FIG. 21; and

FIG. 24 is a schematic diagram of a field curvature and a distortion of the camera optical lens shown in FIG. 21.

DETAILED DESCRIPTION OF THE EXEMPLARY EMBODIMENTS

In order to make the objects, technical solutions, and advantages of the present invention more apparent, the embodiments of the present invention will be described in detail below. However, it will be apparent to the one skilled in the art that, in the various embodiments of the present invention, a number of technical details are presented in order to provide the reader with a better understanding of the invention. However, the technical solutions claimed in the present invention can be implemented without these technical details and various changes and modifications based on the following embodiments.

Embodiment 1

As referring to the accompanying drawings, the present invention provides a camera optical lens 10. FIG. 1 shows the camera optical lens 10 according to Embodiment 1 of the present invention. The camera optical lens 10 comprises five-piece lenses. Specifically, from an object side to an image side, the camera optical lens 10 comprises in sequence: an aperture S1, a first lens L1, a second lens L2, a third lens L3, a fourth lens L4 and a fifth lens L5. Optical elements like optical filter GF can be arranged between the fifth lens L5 and an image surface Si.

The first lens L1 has a positive refractive power. The second lens L2 has a negative refractive power. The third lens L3 has a negative refractive power. The fourth lens L4 has a positive refractive power. The fifth lens L5 has a negative refractive power. In other optional embodiments, a refractive power of each lens may also be made of other options.

The first lens L1 is made of plastic material, the second lens L2 is made of plastic material, the third lens L3 is made of plastic material, the fourth lens L4 is made of plastic material and the fifth lens L5 is made of plastic material. In other optional embodiments, each lens may also be made of other materials.

A focal length of the first lens L1 is defined as f1. The camera optical lens 10 further satisfies the following condition: 0.70≤f1/f≤1.00, which specifies a ratio of the focal length f1 of the first lens L1 to the focal length f of the camera optical lens 10. When the above condition is satisfied, an amount of the field curvature of the camera optical lens 10 can be effectively balanced, so that an offset amount of the field curvature of a center field lower than 0.01 mm.

A central curvature radius of an object side surface of the second lens L2 is defined as R3, and a central curvature radius of an image side surface of the second lens L2 is defined as R4. The camera optical lens 10 further satisfies the following condition: 3.00≤R3/R4≤15.00, which specifies a shape of the second lens L2. It is beneficial for correcting astigmatism and distortion of the camera optical lens, so that |Distortion|≤1.6%, and brightness or saturation can be maintained.

A central curvature radius of an object side surface of the third lens L3 is defined as R5, and a central curvature radius of an image side surface of the third lens L3 is defined as R6. The camera optical lens 10 further satisfies the following condition: 2.00≤R6/R5≤10.00, which specifies a shape of the third lens L3. It can reduce a deflection of light and effectively correct a chromatism, so that the chromatism |LC|≤2.0 μm.

A central curvature radius of an object side surface of the fourth lens L4 is defined as R7, and a central curvature radius of an image side surface of the fourth lens L4 is defined as R8. The camera optical lens further satisfies the following condition: −12.00≤R7/R8≤−1.50, which specifies a shape of the fourth lens L4. When the value is within this range, a curvature of a surface of the lens is reasonably distributed, and it is beneficial for molding and assembling the lens.

A central curvature radius of an object side surface of the fifth lens L5 is defined as R9, and a central curvature radius of an image side surface of the fifth lens L5 is defined as R10. The camera optical lens further satisfies the following condition: −15.00≤R9/R10≤−3.00, which specifies a shape of the fifth lens L5. When the value is within this range, a curvature of a surface of the lens is reasonably distributed, and it is beneficial for molding and assembling the lenses.

An on-axis thickness of the third lens L3 is defined as d5. An on-axis distance from the image side surface of the third lens L3 to the object side surface of the fourth lens L4 is defined as d6. The camera optical lens 10 further satisfies the following condition: 1.00≤d5/d6≤3.00, which specifies a ratio of the on-axis thickness d5 of the third lens L3 to the on-axis distance from the image side surface of the third lens L3 to the object side surface of the fourth lens L4. When the value is within this range, it benefits for reducing a total optical length, thereby realizing the ultra-thin effect.

In the present embodiment, an object side surface of the first lens L1 is convex in a paraxial region and an image side surface of the first lens L1 is concave in the paraxial region. In other optional embodiments, the object side surface and the image side surface of the first lens L1 can also be set to other concave and convex distribution situations.

A total optical length from the object side surface of the first lens L1 to the image surface Si of the camera optical lens 10 along an optical axis is defined as TTL. An on-axis thickness of the first lens L1 is defined as d1. The camera optical lens 10 further satisfies the following condition: 0.06≤d1/TTL≤0.22, which specifies a ratio of the on-axis thickness of the first lens L1 to the total optical length of the camera optical lens 10. When the value is within this range, it benefits for realizing the ultra-thin effect. Preferably, the following condition shall be satisfied, 0.10≤d1/TTL≤0.17.

A central curvature radius of the object side surface of the first lens L1 is defined as R1, and a central curvature radius of the image side surface of the first lens L1 is defined as R2. The camera optical lens 10 further satisfies the following condition: −4.81≤(R1+R2)/(R1−R2)≤−0.62. This condition reasonably controls a shape of the first lens L1, so that the first lens L1 can effectively correct a spherical aberration of the camera optical lens 10. Preferably, the following condition shall be satisfied, −3.01≤(R1+R2)/(R1−R2)≤−0.77.

In the present embodiment, the object side surface of the second lens L2 is convex in the paraxial region and the image side surface of the second lens L2 is concave in the paraxial region. In other optional embodiments, the object side surface and the image side surface of the second lens L2 can also be set to other concave and convex distribution situations.

The focal length of the camera optical lens 10 is defined as f, and a focal length of the second lens L2 is defined as f2. The camera optical lens 10 further satisfies the following condition: −4.99≤f2/f≤169.64, which specifies a ratio of the focal length f2 of the second lens L2 to the focal length f of the camera optical lens 10. It benefits for correcting an aberration of the camera optical lens 10 by controlling the refractive power of the second lens L2 being within reasonable range. Preferably, the following condition shall be satisfied, −3.12≤f2/f≤135.71.

The central curvature radius of the object side surface of the second lens L2 is defined as R3, and the central curvature radius of the image side surface of the second lens L2 is defined as R4. The camera optical lens 10 further satisfies the following condition: 0.57≤(R3+R4)/(R3−R4)≤3.00, which specifies a shape of the second lens L2. When the value is within this range, as the camera optical lens 10 develops toward ultra-thin and wide-angle, it benefits for correcting the problem of an on-axis chromatic aberration. Preferably, the following condition shall be satisfied, 0.91≤(R3+R4)/(R3−R4)≤2.40.

An on-axis thickness of the second lens L2 is defined as d3. The total optical length from the object side surface of the first lens L1 to the image surface S1 of the camera optical lens 10 along the optical axis is defined as TTL. The camera optical lens 10 further satisfies the following condition: 0.02≤d3/TTL≤0.11. When the value is within this range, it benefits for realizing the ultra-thin effect. Preferably, the following condition shall be satisfied, 0.03≤d3/TTL≤0.08.

In the present embodiment, the object side surface of the third lens L3 is concave in the paraxial region and the image side surface of the third lens L3 is convex in the paraxial region. In other optional embodiments, the object side surface and the image side surface of the third lens L3 can also be set to other concave and convex distribution situations.

The focal length of the camera optical lens 10 is defined as f, and a focal length of the third lens L3 is defined as f3. The camera optical lens 10 further satisfies the following condition: f3/f≥−16.04, which specifies a ratio of the focal length of the third lens L3 to the focal length of the camera optical lens 10. It benefits for correcting the aberration of the camera optical lens 10 by controlling the refractive power of the third lens L3 being within reasonable range. Preferably, the following condition shall be satisfied, f3/f≥−10.02.

The central curvature radius of the object side surface of the third lens L3 is defined as R5, and the central curvature radius of the image side surface of the third lens L3 is defined as R6. The camera optical lens 10 further satisfies the following condition: −5.97≤(R5+R6)/(R5−R6)≤−0.81, which specifies a shape of the third lens L3. When the value is within this range, a degree of deflection of light passing through the lens can be alleviated, and the aberration can be reduced effectively. Preferably, the following condition shall be satisfied, −3.73≤(R5+R6)/(R5−R6)≤−1.02.

An on-axis thickness of the third lens L3 is defined as d5. The total optical length from the object side surface of the first lens L1 to the image surface S1 of the camera optical lens 10 along the optical axis is defined as TTL. The camera optical lens 10 further satisfies the following condition: 0.05≤d5/TTL≤0.24, which benefits for realizing the ultra-thin effect. Preferably, the following condition shall be satisfied, 0.08≤d5/TTL≤0.19.

In the present embodiment, the object side surface of the fourth lens L4 is convex in the paraxial region and the image side surface of the fourth lens L4 is convex in the paraxial region. In other optional embodiments, the object side surface and the image side surface of the fourth lens L4 can also be set to other concave and convex distribution situations.

The focal length of the camera optical lens 10 is defined as f, and a focal length of the fourth lens L4 is defined as f4. The camera optical lens 10 further satisfies the following condition: 0.33≤f4/f≤1.29. By a reasonable distribution of the refractive power, which makes it is possible that the camera optical lens 10 has an excellent imaging quality and a lower sensitivity. Preferably, the following condition shall be satisfied, 0.53≤f4/f≤1.03.

The curvature radius of the object side surface of the fourth lens L4 is defined as R7, and the central curvature radius of the image side surface of the fourth lens L4 is defined as R8. The camera optical lens further satisfies the following condition: 0.10≤(R7+R8)/(R7−R8)≤1.27, which specifies a shape of the fourth lens L4. When the value is within this range, as the development of ultra-thin and wide-angle lenses, it benefits for solving the problems, such as correcting an off-axis aberration. Preferably, the following condition shall be satisfied, 0.16≤(R7+R8)/(R7−R8)≤1.01.

An on-axis thickness of the fourth lens L4 is defined as d7. The total optical length from the object side surface of the first lens L1 to the image surface S1 of the camera optical lens 10 along the optical axis is defined as TTL. The camera optical lens 10 further satisfies the following condition: 0.05≤d7/TTL≤0.20, which benefits for realizing the ultra-thin effect. Preferably, the following condition shall be satisfied, 0.08≤d7/TTL≤0.16.

In the present embodiment, the object side surface of the fifth lens L5 is concave in the paraxial region and the image side surface of the fifth lens L5 is concave in the paraxial region. In other optional embodiments, the object side surface and the image side surface of the fifth lens L5 can also be set to other concave and convex distribution situations.

The focal length of the camera optical lens 10 is defined as f, and a focal length of the fifth lens L5 is defined as f5. The camera optical lens 10 further satisfies the following condition: −1.19≤f5/f≤−0.38, a light angle of the camera optical lens 10 can be smoothed effectively and the sensitivity of the tolerance can be reduced. Preferably, the following condition shall be satisfied, −0.75≤f5/f≤−0.48.

The central curvature radius of the object side surface of the fifth lens L5 is defined as R9, and the central curvature radius of the image side surface of the fifth lens L5 is defined as R10. The camera optical lens further satisfies the following condition: 0.25≤(R9+R10)/(R9−R10)≤1.31, which specifies a shape of the fifth lens L5. When the value is within this range, as the development of the ultra-thin and wide-angle lenses, it benefits for solving the problems, such as correcting the off-axis aberration. Preferably, the following condition shall be satisfied, 0.40≤(R9+R10)/(R9−R10)≤1.05.

An on-axis thickness of the fifth lens L5 is defined as d9. The total optical length from the object side surface of the first lens L1 to the image surface S1 of the camera optical lens 10 along the optical axis is defined as TTL. The camera optical lens 10 further satisfies the following condition: 0.04≤d9/TTL≤0.15. When the value is within this range, it benefits for realizing the ultra-thin effect. Preferably, the following condition shall be satisfied, 0.06≤d9/TTL≤0.12.

In the present embodiment, the focal length of the camera optical lens 10 is f, and a combined focal length of the first lens L1 and the second lens L2 is defined as f12. The camera optical lens 10 further satisfies the following condition: 0.49≤f12/f≤1.82. This condition can eliminate aberration and distortion of the camera optical lens 10, reduce the back focal length of the camera optical lens 10, and maintain the miniaturization of the camera optical lens 10. Preferably, the following condition shall be satisfied, 0.79≤f12/f≤1.46.

In the present embodiment, a field of view of the camera optical lens 10 in a diagonal direction is defined as FOV. The FOV is greater than or equal to 74.68°, thereby achieving the wide-angle performance. Preferably, the FOV is greater than or equal to 76.00°.

In the present embodiment, an image height of the camera optical lens 10 is defined as IH. The total optical length from the object side surface of the first lens L1 to the image surface S1 of the camera optical lens 10 along an optical axis is defined as TTL. The camera optical lens 10 further satisfies the following condition: TTL/IH≤1.52, thereby achieving the ultra-thin performance. Preferably, the following condition shall be satisfied, TTL/IH≤1.45.

In the present embodiment, an F number (FNO) of the camera optical lens 10 is smaller than or equal to 2.30, thereby achieving a large aperture and good imaging performance. Preferably, the FNO of the camera optical lens 10 is smaller than or equal to 2.25.

When satisfying above conditions, which makes it is possible that the camera optical lens has excellent optical performances, and meanwhile can meet design requirements of the ultra-thin, wide-angle lenses having large aperture. According the characteristics of the camera optical lens 10, it is particularly suitable for a mobile camera lens component and a WEB camera lens composed of high pixel CCD, CMOS.

The following examples will be used to describe the camera optical lens 10 of the present invention. The symbols recorded in each example will be described as follows. The focal length, on-axis distance, central curvature radius, on-axis thickness, inflexion point position, and arrest point position are all in units of mm.

TTL: the total optical length from the object side surface of the first lens L1 to the image surface S1 of the camera optical lens 10 along the optical axis, the unit of TTL is mm.

F number (FNO): the ratio of an effective focal length of the camera optical lens 10 to an entrance pupil diameter (ENPD).

Preferably, inflexion points and/or arrest points can also be arranged on the object side surface and/or image side surface of the lens, so that the demand for high quality imaging can be satisfied, the description below can be referred for specific implementable scheme.

The design information of the camera optical lens 10 in Embodiment 1 of the present invention is shown in the tables 1 and 2.

TABLE 1

R
d
nd
vd

S1
∞
d0 =
−0.195

R1
1.313
d1 =
0.600
nd1
1.5444
v1
55.82

R2
7.807
d2 =
0.033

R3
10.406
d3 =
0.292
nd2
1.6610
v2
20.53

R4
3.406
d4 =
0.338

R5
−8.180
d5 =
0.484
nd3
1.5444
v3
55.82

R6
−17.467
d6 =
0.404

R7
7.657
d7 =
0.427
nd4
1.5444
v4
55.82

R8
−1.965
d8 =
0.303

R9
−8.106
d9 =
0.332
nd5
1.5346
v5
55.69

R10
1.342
d10 =
0.429

R11
∞
d11 =
0.210
ndg
1.5168
vg
64.17

R12
∞
d12 =
0.288

where, the meaning of the various symbols is as follows.

S1: aperture;

R: curvature radius of an optical surface, a central curvature radius for a lens;

R1: central curvature radius of the object side surface of the first lens L1;

R2: central curvature radius of the image side surface of the first lens L1;

R3: central curvature radius of the object side surface of the second lens L2;

R4: central curvature radius of the image side surface of the second lens L2;

R5: central curvature radius of the object side surface of the third lens L3;

R6: central curvature radius of the image side surface of the third lens L3;

R7: central curvature radius of the object side surface of the fourth lens L4;

R8: central curvature radius of the image side surface of the fourth lens L4;

R9: central curvature radius of the object side surface of the fifth lens L5;

R10: central curvature radius of the image side surface of the fifth lens L5;

R11: central curvature radius of an object side surface of the optical filter GF;

R12: curvature radius of an image side surface of the optical filter GF;

d: on-axis thickness of a lens and an on-axis distance between lenses;

d0: on-axis distance from the aperture S1 to the object side surface of the first lens L1;

d1: on-axis thickness of the first lens L1;

d2: on-axis distance from the image side surface of the first lens L1 to the object side surface of the second lens L2;

d3: on-axis thickness of the second lens L2;

d4: on-axis distance from the image side surface of the second lens L2 to the object side surface of the third lens L3;

d5: on-axis thickness of the third lens L3;

d6: on-axis distance from the image side surface of the third lens L3 to the object side surface of the fourth lens L4;

d7: on-axis thickness of the fourth lens L4;

d8: on-axis distance from the image side surface of the fourth lens L4 to the object side surface of the fifth lens L5;

d9: on-axis thickness of the fifth lens L5;

d10: on-axis distance from the image side surface of the fifth lens L5 to the object side surface of the optical filter GF;

d11: on-axis thickness of the optical filter GF;

d12: on-axis distance from the image side surface of the optical filter GF to the image surface;

nd: refractive index of d line (d-line is green light with a wavelength of 550 nm);

nd1: refractive index of d line of the first lens L1;

nd2: refractive index of d line of the second lens L2;

nd3: refractive index of d line of the third lens L3;

nd4: refractive index of d line of the fourth lens L4;

nd5: refractive index of d line of the fifth lens L5;

ndg: refractive index of d line of the optical filter GF;

vd: abbe number;

v1: abbe number of the first lens L1;

v2: abbe number of the second lens L2;

v3: abbe number of the third lens L3;

v4: abbe number of the fourth lens L4;

v5: abbe number of the fifth lens L5;

vg: abbe number of the optical filter GF;

Table 2 shows the aspherical surface data of the camera optical lens 10 in Embodiment 1 of the present invention.

TABLE 2

Conic

coefficient
Aspheric surface coefficients

k
A4
A6
A8
A10
A12

R1
1.9212E−01
−4.4166E−02
3.8073E−01
−3.6658E+00
2.0361E+01
−7.1447E+01

R2
−6.7958E+01
−2.9083E−01
4.9232E−01
−1.6367E+00
1.6107E+01
−8.4388E+01

R3
1.3335E+01
−2.5435E−01
4.8103E−01
1.9580E−01
4.0139E+00
−3.8251E+01

R4
−2.2352E+01
3.9484E−02
7.4781E−01
−6.4296E+00
4.8456E+01
−2.2186E+02

R5
3.1521E+01
−2.3349E−01
3.1606E−01
−3.2649E+00
2.1943E+01
−8.6869E+01

R6
9.9003E+01
−1.8347E−01
−2.5618E−02
−9.3224E−02
1.1885E+00
−3.5883E+00

R7
−4.3895E+01
1.7139E−01
−6.1064E−01
1.3465E+00
−2.1215E+00
2.1780E+00

R8
9.7255E−02
4.4084E−01
−8.4651E−01
1.3323E+00
−1.3388E+00
8.3874E−01

R9
1.2747E+01
−1.7440E−01
−2.8462E−01
6.7051E−01
−5.4248E−01
2.4214E−01

R10
−7.9285E+00
−1.8527E−01
7.4058E−02
1.6928E−02
−3.4654E−02
1.7986E−02

Conic

coefficient
Aspheric surface coefficients

k
A14
A16
A18
A20

R1
1.9212E−01
1.5680E+02
−2.0922E+02
1.5488E+02
−4.8858E+01

R2
−6.7958E+01
2.3385E+02
−3.6874E+02
3.1555E+02
−1.1446E+02

R3
1.3335E+01
1.2532E+02
−2.1249E+02
1.8986E+02
−7.1321E+01

R4
−2.2352E+01
6.1476E+02
−1.0099E+03
9.0773E+02
−3.4428E+02

R5
3.1521E+01
2.0622E+02
−2.9016E+02
2.2449E+02
−7.3966E+01

R6
9.9003E+01
5.7101E+00
−5.1294E+00
2.4962E+00
−5.1490E−01

R7
−4.3895E+01
−1.4596E+00
6.0751E−01
−1.4002E−01
1.3516E−02

R8
9.7255E−02
−3.2980E−01
7.9531E−02
−1.0772E−02
6.2873E−04

R9
1.2747E+01
−6.5632E−02
1.0814E−02
−1.0012E−03
4.0109E−05

R10
−7.9285E+00
−5.0724E−03
8.3667E−04
−7.5625E−05
2.8883E−06

For convenience, an aspheric surface of each lens surface uses the aspheric surfaces shown in the below condition (1). However, the present invention is not limited to the aspherical polynomials form shown in the condition (1).

z=(cr²)/{1+[1−(k+1)(c²r²)]^1/2}+A4r⁴+A6r⁶+A8r⁸+A10r¹⁰+A12r¹²+A14r¹⁴+A16r¹⁶+A18r¹⁸+A20r²⁰ (1)

Where, K is a conic coefficient, A4, A6, A8, A10, A12, A14, A16, A18, A20 are aspheric surface coefficients. c is the curvature at the center of the optical surface. r is a vertical distance between a point on an aspherical curve and the optic axis, and z is an aspherical depth (a vertical distance between a point on an aspherical surface, having a distance of r from the optic axis, and a surface tangent to a vertex of the aspherical surface on the optic axis).

Table 3 and Table 4 show design data of inflexion points and arrest points of respective lens in the camera optical lens 10 according to Embodiment 1 of the present invention. P1R1 and P1R2 represent the object side surface and the image side surface of the first lens L1, P2R1 and P2R2 represent the object side surface and the image side surface of the second lens L2, P3R1 and P3R2 represent the object side surface and the image side surface of the third lens L3, P4R1 and P4R2 represent the object side surface and the image side surface of the fourth lens L4, and P5R1 and P5R2 represent the object side surface and the image side surface of the fifth lens L5. The data in the column named “inflexion point position” refers to vertical distances from inflexion points arranged on each lens surface to the optical axis of the camera optical lens 10. The data in the column named “arrest point position” refers to vertical distances from arrest points arranged on each lens surface to the optical axis of the camera optical lens 10.

TABLE 3

Number of
Inflexion
Inflexion
Inflexion
Inflexion

inflexion
point
point
point
point

points
position 1
position 2
position 3
position 4

P1R1
1
0.775
/
/
/

P1R2
1
0.205
/
/
/

P2R1
3
0.205
0.405
0.755
/

P2R2
0
/
/
/
/

P3R1
0
/
/
/
/

P3R2
2
0.925
1.085
/
/

P4R1
2
0.625
1.325
/
/

P4R2
2
0.575
0.955
/
/

P5R1
2
0.955
2.085
/
/

P5R2
4
0.435
2.075
2.205
2.305

TABLE 4

Arrest point

Number of arrest points
Arrest point position 1
position 2

P1R1
0
/
/

P1R2
1
0.385
/

P2R1
0
/
/

P2R2
0
/
/

P3R1
0
/
/

P3R2
0
/
/

P4R1
1
0.885
/

P4R2
0
/
/

P5R1
2
1.965
2.125

P5R2
1
0.975
/

FIG. 2 and FIG. 3 respectively illustrate a longitudinal aberration and a lateral color of light with wavelengths of 650 nm, 610 nm, 555 nm, 510 nm, 470 nm and 435 nm after passing the camera optical lens 10 according to Embodiment 1. FIG. 4 illustrates a field curvature and a distortion of light with a wavelength of 555 nm after passing the camera optical lens 10 according to Embodiment 1, in which a field curvature S is a field curvature in a sagittal direction and T is a field curvature in a tangential direction.

Table 25 in the following shows various values of Embodiments 1, 2, 3, 4 and Comparative Embodiment, and also values corresponding to parameters which are specified in the above conditions. As shown in Table 25, Embodiment 1 satisfies the above conditions.

As shown in Table 25, Embodiment 1 satisfies the above conditions.

In the present embodiment, the entrance pupil diameter (ENPD) of the camera optical lens 10 is 1.605 mm. The image height of 1.0H is 2.897 mm. The FOV is 76.20°. Thus, the camera optical lens 10 satisfies design requirements of large aperture, ultra-thin and wide-angle while the on-axis and off-axis aberrations are sufficiently corrected, thereby achieving excellent optical characteristics.

Embodiment 2

Embodiment 2 is basically the same as Embodiment 1, the meaning of its symbols is the same as that of Embodiment 1, in the following, only the differences are listed. An image side surface of a first lens Lil is convex in a paraxial region.

FIG. 5 shows a schematic diagram of a structure of a camera optical lens 20 according to Embodiment 2 of the present invention. Table 5 and table 6 show the design data of a camera optical lens 20 in Embodiment 2 of the present invention.

TABLE 5

R
d
nd
vd

S1
∞
d0 =
−0.186

R1
1.357
d1 =
0.542
nd1
1.5444
v1
55.82

R2
−35.146
d2 =
0.033

R3
45.164
d3 =
0.230
nd2
1.6610
v2
20.53

R4
3.013
d4 =
0.399

R5
−5.413
d5 =
0.670
nd3
1.5444
v3
55.82

R6
−54.115
d6 =
0.224

R7
3.004
d7 =
0.482
nd4
1.5444
v4
55.82

R8
−1.992
d8 =
0.303

R9
−8.726
d9 =
0.348
nd5
1.5346
v5
55.69

R10
1.251
d10 =
0.438

R11
∞
d11 =
0.210
ndg
1.5168
vg
64.17

R12
∞
d12 =
0.312

Table 6 shows aspherical surface data of each lens of the camera optical lens 20 in Embodiment 2 of the present invention.

TABLE 6

Conic

coefficient
Aspheric surface coefficients

k
A4
A6
A8
A10
A12

R1
2.1288E−01
−5.1244E−02
3.9774E−01
−3.7259E+00
2.0368E+01
−7.1461E+01

R2
−1.0000E+03
−9.9397E−02
3.0178E−01
−1.8236E+00
1.6188E+01
−8.4026E+01

R3
1.0000E+03
−1.2239E−02
2.9544E−01
−3.8027E−02
4.0925E+00
−3.7936E+01

R4
−2.7195E+01
1.7559E−01
6.8397E−01
−6.6434E+00
4.8634E+01
−2.2154E+02

R5
1.5196E+01
−1.8507E−01
3.2615E−01
−3.1641E+00
2.1715E+01
−8.7222E+01

R6
7.0499E+02
−2.9956E−01
6.8980E−02
−1.7912E−01
1.1991E+00
−3.5707E+00

R7
−1.8033E+01
1.0911E−01
−5.7448E−01
1.3406E+00
−2.1284E+00
2.1792E+00

R8
3.8065E−02
4.3918E−01
−8.4691E−01
1.3329E+00
−1.3387E+00
8.3878E−01

R9
1.5011E+01
−1.8676E−01
−2.8259E−01
6.7112E−01
−5.4247E−01
2.4212E−01

R10
−6.9022E+00
−1.7589E−01
6.9100E−02
1.7884E−02
−3.4630E−02
1.7974E−02

Conic

coefficient
Aspheric surface coefficients

k
A14
A16
A18
A20

R1
2.1288E−01
1.5678E+02
−2.0909E+02
1.5497E+02
−4.9218E+01

R2
−1.0000E+03
2.3422E+02
−3.6897E+02
3.1434E+02
−1.1383E+02

R3
1.0000E+03
1.2586E+02
−2.1236E+02
1.8983E+02
−7.3439E+01

R4
−2.7195E+01
6.1491E+02
−1.0101E+03
9.0720E+02
−3.4500E+02

R5
1.5196E+01
2.0644E+02
−2.8943E+02
2.2500E+02
−7.4785E+01

R6
7.0499E+02
5.6986E+00
−5.1494E+00
2.4887E+00
−4.9646E−01

R7
−1.8033E+01
−1.4581E+00
6.0782E−01
−1.4007E−01
1.3420E−02

R8
3.8065E−02
−3.2979E−01
7.9534E−02
−1.0773E−02
6.2777E−04

R9
1.5011E+01
−6.5636E−02
1.0813E−02
−1.0012E−03
4.0149E−05

R10
−6.9022E+00
−5.0739E−03
8.3666E−04
−7.5610E−05
2.8902E−06

Table 7 and table 8 show design data of inflexion points and arrest points of respective lens in the camera optical lens 20 according to Embodiment 2 of the present invention.

TABLE 7

Number of
Inflexion
Inflexion
Inflexion
Inflexion

inflexion
point
point
point
point

points
position 1
position 2
position 3
position 4

P1R1
1
0.735
/
/
/

P1R2
0
/
/
/
/

P2R1
1
0.745
/
/
/

P2R2
0
/
/
/
/

P3R1
1
0.775
/
/
/

P3R2
2
1.035
1.135
/
/

P4R1
3
0.565
1.285
1.425
/

P4R2
4
0.555
0.985
1.435
1.735

P5R1
3
0.965
1.995
2.005
/

P5R2
1
0.455
/
/
/

TABLE 8

Number of
Arrest
Arrest

arrest points
point position 1
point position 2

P1R1
0
/
/

P1R2
0
/
/

P2R1
0
/
/

P2R2
0
/
/

P3R1
0
/
/

P3R2
0
/
/

P4R1
1
0.895
/

P4R2
0
/
/

P5R1
1
1.805
/

P5R2
1
1.065
/

FIG. 6 and FIG. 7 respectively illustrate a longitudinal aberration and a lateral color of light with wavelengths of 650 nm, 610 nm, 555 nm, 510 nm, 470 nm and 435 nm after passing the camera optical lens 20 according to Embodiment 2. FIG. 8 illustrates a field curvature and a distortion of light with a wavelength of 555 nm after passing the camera optical lens 10 according to Embodiment 2, in which a field curvature S is a field curvature in a sagittal direction and T is a field curvature in a tangential direction.

As shown in Table 25, Embodiment 2 satisfies the above conditions.

In the present embodiment, an entrance pupil diameter (ENPD) of the camera optical lens is 1.527 mm. An image height of 1.0H is 2.897 mm. An FOV is 79.20°. Thus, the camera optical lens 20 satisfies design requirements of large aperture, ultra-thin and wide-angle while the on-axis and off-axis aberrations are sufficiently corrected, thereby achieving excellent optical characteristics.

Embodiment 3

Embodiment 3 is basically the same as Embodiment 1 and involves symbols having the same meanings as Embodiment 1, and only differences therebetween will be described in the following.

FIG. 9 shows a schematic diagram of a structure of a camera optical lens 30 according to Embodiment 3 of the present invention. Table 9 and table 10 show the design data of the camera optical lens 30 in Embodiment 3 of the present invention.

TABLE 9

R
d
nd
vd

S1
∞
d0 =
−0.228

R1
1.262
d1 =
0.543
nd1
1.5444
v1
55.82

R2
5.467
d2 =
0.038

R3
11.680
d3 =
0.230
nd2
1.6610
v2
20.53

R4
3.887
d4 =
0.405

R5
−7.080
d5 =
0.486
nd3
1.5444
v3
55.82

R6
−14.216
d6 =
0.320

R7
20.305
d7 =
0.470
nd4
1.5444
v4
55.82

R8
−1.698
d8 =
0.377

R9
−4.607
d9 =
0.341
nd5
1.5346
v5
55.69

R10
1.531
d10 =
0.433

R11
∞
d11 =
0.210
ndg
1.5168
vg
64.17

R12
∞
d12 =
0.290

Table 10 shows aspherical surface data of each lens of the camera optical lens 30 in Embodiment 3 of the present invention.

TABLE 10

Conic

coefficient
Aspheric surface coefficients

k
A4
A6
A8
A10
A12

R1
1.3795E−01
−4.7312E−02
4.4041E−01
−3.7315E+00
2.0324E+01
−7.1426E+01

R2
−6.2657E+01
−2.9448E−01
4.4811E−01
−1.5672E+00
1.6282E+01
−8.4242E+01

R3
1.2764E+01
−2.8563E−01
5.1621E−01
3.0250E−01
4.0351E+00
−3.8208E+01

R4
−6.0932E+01
9.6631E−02
8.0222E−01
−6.5048E+00
4.8498E+01
−2.2173E+02

R5
−1.2205E+02
−2.5469E−01
2.6153E−01
−3.1362E+00
2.1877E+01
−8.7362E+01

R6
−5.2788E+02
−1.9804E−01
−8.6631E−02
−9.4858E−02
1.1930E+00
−3.5978E+00

R7
−8.1798E+01
1.5339E−01
−6.5317E−01
1.3789E+00
−2.1388E+00
2.1737E+00

R8
−1.2525E−01
4.0034E−01
−8.1596E−01
1.3308E+00
−1.3394E+00
8.3863E−01

R9
3.9968E+00
−1.7057E−01
−2.8411E−01
6.7096E−01
−5.4243E−01
2.4213E−01

R10
−9.2459E+00
−1.8732E−01
7.4069E−02
1.7217E−02
−3.4702E−02
1.7973E−02

Conic

coefficient
Aspheric surface coefficients

k
A14
A16
A18
A20

R1
1.3795E−01
1.5703E+02
−2.0934E+02
1.5453E+02
−4.8620E+01

R2
−6.2657E+01
2.3367E+02
−3.6933E+02
3.1490E+02
−1.1315E+02

R3
1.2764E+01
1.2531E+02
−2.1237E+02
1.8881E+02
−7.0631E+01

R4
−6.0932E+01
6.1500E+02
−1.0094E+03
9.0770E+02
−3.4578E+02

R5
−1.2205E+02
2.0650E+02
−2.8884E+02
2.2263E+02
−7.2557E+01

R6
−5.2788E+02
5.6968E+00
−5.1319E+00
2.5079E+00
−5.0380E−01

R7
−8.1798E+01
−1.4579E+00
6.0894E−01
−1.3965E−01
1.3448E−02

R8
−1.2525E−01
−3.2980E−01
7.9536E−02
−1.0770E−02
6.2905E−04

R9
3.9968E+00
−6.5636E−02
1.0813E−02
−1.0012E−03
4.0253E−05

R10
−9.2459E+00
−5.0735E−03
8.3669E−04
−7.5596E−05
2.9010E−06

Table 11 and table 12 show Embodiment 3 design data of inflexion points and arrest points of respective lens in the camera optical lens 30 according to Embodiment 3 of the present invention.

TABLE 11

Number of
Inflexion
Inflexion
Inflexion
Inflexion

inflexion
point
point
point
point

points
position 1
position 2
position 3
position 4

P1R1
1
0.785
/
/
/

P1R2
1
0.235
/
/
/

P2R1
2
0.175
0.415
/
/

P2R2
0
/
/
/
/

P3R1
1
0.755
/
/
/

P3R2
1
0.955
/
/
/

P4R1
2
0.465
1.235
/
/

P4R2
2
0.745
1.005
/
/

P5R1
1
0.965
/
/
/

P5R2
2
0.425
2.115
/
/

TABLE 12

Number of
Arrest
Arrest

arrest points
point position 1
point position 2

P1R1
0
/
/

P1R2
1
0.475
/

P2R1
2
0.345
0.465

P2R2
0
/
/

P3R1
0
/
/

P3R2
0
/
/

P4R1
1
0.675
/

P4R2
0
/
/

P5R1
0
/
/

P5R2
1
0.895
/

FIG. 10 and FIG. 11 respectively illustrate a longitudinal aberration and a lateral color of light with wavelengths of 650 nm, 610 nm, 555 nm, 510 nm, 470 nm and 435 nm after passing the camera optical lens 30 according to Embodiment 3. FIG. 12 illustrates a field curvature and a distortion of light with a wavelength of 555 nm after passing the camera optical lens 30 according to Embodiment 3, in which a field curvature S is a field curvature in a sagittal direction and T is a field curvature in a tangential direction.

Table 25 in the following lists values corresponding to the respective conditions. In the present Embodiment 3 in order to satisfy the above conditions.

In the present embodiment, an entrance pupil diameter (ENPD) of the camera optical lens is 1.609 mm. An image height of 1.0H is 2.897 mm. An FOV is 76.20°. Thus, the camera optical lens 30 satisfies design requirements of large aperture, ultra-thin and wide-angle while the on-axis and off-axis aberrations are sufficiently corrected, thereby achieving excellent optical characteristics.

Embodiment 4

Embodiment 4 is basically the same as Embodiment 1 and involves symbols having the same meanings as Embodiment 1, and only differences therebetween will be described in the following.

FIG. 13 shows a schematic diagram of a structure of a camera optical lens 40 according to Embodiment 4 of the present invention. A third lens L3 has a positive refractive power. The third lens L3 has an object side surface being convex in a paraxial position, and an image side surface being concave in the paraxial position. Tables 13 and 14 show the design data of a camera optical lens 40 in Embodiment 4 of the present invention.

TABLE 13

R
d
nd
vd

S1
∞
d0 =
−0.174

R1
1.353
d1 =
0.580
nd1
1.5444
v1
55.82

R2
6.085
d2 =
0.050

R3
15.238
d3 =
0.231
nd2
1.6610
v2
20.53

R4
4.148
d4 =
0.374

R5
850693.831
d5 =
0.416
nd3
1.5444
v3
55.82

R6
4637197.092
d6 =
0.414

R7
8.080
d7 =
0.490
nd4
1.5444
v4
55.82

R8
−1.854
d8 =
0.324

R9
−7.850
d9 =
0.381
nd5
1.5346
v5
55.69

R10
1.247
d10 =
0.396

R11
∞
d11 =
0.210
ndg
1.5168
vg
64.17

R12
∞
d12 =
0.252

Table 14 shows aspherical surface data of each lens of the camera optical lens 40 in Embodiment 4 of the present invention.

TABLE 14

Conic

coefficient
Aspheric surface coefficients

k
A4
A6
A8
A10
A12

R1
1.2956E−01
−4.4578E−02
4.0621E−01
−3.6791E+00
2.0331E+01
−7.1432E+01

R2
−3.0169E+01
−2.9762E−01
4.2915E−01
−1.5492E+00
1.6288E+01
−8.4270E+01

R3
−2.1291E+02
−2.8233E−01
5.4532E−01
2.3136E−01
4.0341E+00
−3.8148E+01

R4
−7.8586E+01
4.8414E−02
7.9215E−01
−6.4169E+00
4.8329E+01
−2.2200E+02

R5
4.8993E+02
−2.7120E−01
2.9401E−01
−3.1153E+00
2.1775E+01
−8.7207E+01

R6
−6.7614E+02
−2.2086E−01
−4.8983E−02
−1.1109E−01
1.1815E+00
−3.5900E+00

R7
1.4716E+01
1.7317E−01
−6.2424E−01
1.3475E+00
−2.1221E+00
2.1780E+00

R8
−3.6575E−02
4.4377E−01
−8.4349E−01
1.3320E+00
−1.3388E+00
8.3875E−01

R9
1.3131E+01
−1.8581E−01
−2.8397E−01
6.7080E−01
−5.4246E−01
2.4214E−01

R10
−6.8661E+00
−1.8394E−01
7.4693E−02
1.6876E−02
−3.4688E−02
1.7981E−02

Conic

coefficient
Aspheric surface coefficients

k
A14
A16
A18
A20

R1
1.2956E−01
1.5685E+02
−2.0916E+02
1.5500E+02
−4.9121E+01

R2
−3.0169E+01
2.3352E+02
−3.6946E+02
3.1508E+02
−1.1264E+02

R3
−2.1291E+02
1.2512E+02
−2.1307E+02
1.8898E+02
−6.9157E+01

R4
−7.8586E+01
6.1478E+02
−1.0096E+03
9.0713E+02
−3.4392E+02

R5
4.8993E+02
2.0625E+02
−2.8962E+02
2.2499E+02
−7.4857E+01

R6
−6.7614E+02
5.7063E+00
−5.1325E+00
2.4978E+00
−5.0872E−01

R7
1.4716E+01
−1.4594E+00
6.0760E−01
−1.4001E−01
1.3495E−02

R8
−3.6575E−02
−3.2980E−01
7.9532E−02
−1.0772E−02
6.2856E−04

R9
1.3131E+01
−6.5632E−02
1.0814E−02
−1.0012E−03
4.0126E−05

R10
−6.8661E+00
−5.0728E−03
8.3669E−04
−7.5615E−05
2.8924E−06

Table 15 and table 16 show Embodiment 4 design data of inflexion points and arrest points of respective lens in the camera optical lens 40 according to Embodiment 4 of the present invention.

TABLE 15

Number of
Inflexion
Inflexion
Inflexion
Inflexion

inflexion
point
point
point
point

points
position 1
position 2
position 3
position 4

P1R1
0
/
/
/
/

P1R2
1
0.235
/
/
/

P2R1
2
0.145
0.435
/
/

P2R2
0
/
/
/
/

P3R1
0
/
/
/
/

P3R2
1
1.005
/
/
/

P4R1
2
0.635
1.335
/
/

P4R2
4
0.585
0.985
1.575
1.715

P5R1
2
0.975
1.945
/
/

P5R2
2
0.455
2.275
/
/

TABLE 16

Number of
Arrest
Arrest

arrest points
point position 1
point position 2

P1R1
0
/
/

P1R2
1
0.455
/

P2R1
2
0.265
0.535

P2R2
0
/
/

P3R1
0
/
/

P3R2
0
/
/

P4R1
1
0.875
/

P4R2
0
/
/

P5R1
0
/
/

P5R2
1
1.055
/

FIG. 14 and FIG. 15 respectively illustrate a longitudinal aberration and a lateral color of light with wavelengths of 650 nm, 610 nm, 555 nm, 510 nm, 470 nm and 435 nm after passing the camera optical lens 30 according to Embodiment 4. FIG. 16 illustrates a field curvature and a distortion of light with a wavelength of 555 nm after passing the camera optical lens 40 according to Embodiment 4, in which a field curvature S is a field curvature in a sagittal direction and T is a field curvature in a tangential direction.

Table 25 in the following lists values corresponding to the respective conditions. In the present Embodiment 4 in order to satisfy the above conditions.

In the present embodiment, an entrance pupil diameter (ENPD) of the camera optical lens is 1.549 mm. An image height of 1.0H is 2.897 mm. An FOV is 78.40°. Thus, the camera optical lens 40 satisfies design requirements of large aperture, ultra-thin and wide-angle while the on-axis and off-axis aberrations are sufficiently corrected, thereby achieving excellent optical characteristics.

Embodiment 5

Embodiment 5 is basically the same as Embodiment 1 and involves symbols having the same meanings as Embodiment 1, and only differences therebetween will be described in the following. A second lens L2 has a positive refractive power. An object side surface of the second lens L2 is concave in a paraxial region and an image side surface of the second lens L2 is convex in the paraxial region.

FIG. 17 shows a schematic diagram of a structure of a camera optical lens 50 according to Embodiment 5 of the present invention. Tables 17 and 18 show the design data of a camera optical lens 50 in Embodiment 5 of the present invention.

TABLE 17

R
d
nd
vd

S1
∞
d0 =
−0.249

R1
1.240
d1 =
0.550
nd1
1.5444
v1
55.82

R2
3.005
d2 =
0.044

R3
−1740.840
d3 =
0.150
nd2
1.6610
v2
20.53

R4
−229.747
d4 =
0.474

R5
−4.761
d5 =
0.563
nd3
1.5444
v3
55.82

R6
−9.615
d6 =
0.273

R7
15.284
d7 =
0.559
nd4
1.5444
v4
55.82

R8
−1.824
d8 =
0.262

R9
−17.951
d9 =
0.412
nd5
1.5346
v5
55.69

R10
1.210
d10 =
0.432

R11
∞
d11 =
0.210
ndg
1.5168
vg
64.17

R12
∞
d12 =
0.268

Table 18 shows aspherical surface data of each lens of the camera optical lens 50 in Embodiment 5 of the present invention.

TABLE 18

Conic

coefficient
Aspheric surface coefficients

k
A4
A6
A8
A10
A12

R1
1.9917E−01
−4.0829E−02
3.6952E−01
−3.5863E+00
2.0288E+01
−7.1501E+01

R2
−4.1363E+00
−3.9812E−01
−3.6471E−02
−1.1136E+00
1.7947E+01
−8.4854E+01

R3
4.6327E+06
−4.2732E−01
8.3686E−01
1.8190E−01
3.7146E+00
−3.6569E+01

R4
−7.1178E−02
1.3519E+00
−5.9003E+00
4.5842E+01
−2.2210E+02
6.1848E+02

R5
3.6387E+00
−1.5411E−01
3.0061E−01
−3.4338E+00
2.2527E+01
−8.8738E+01

R6
−3.2755E+02
−1.3856E−01
−6.7965E−02
−1.3512E−01
1.2041E+00
−3.5518E+00

R7
1.0104E+00
1.8683E−01
−6.2828E−01
1.3397E+00
−2.1236E+00
2.1812E+00

R8
−4.4796E−02
4.5408E−01
−8.3488E−01
1.3307E+00
−1.3395E+00
8.3860E−01

R9
−4.6263E+03
−1.7715E−01
−2.8716E−01
6.7001E−01
−5.4254E−01
2.4212E−01

R10
−5.8920E+00
−1.7449E−01
6.7322E−02
1.8619E−02
−3.4686E−02
1.7971E−02

Conic

coefficient
Aspheric surface coefficients

k
A14
A16
A18
A20

R1
1.9917E−01
1.5672E+02
−2.0921E+02
1.5514E+02
−4.9140E+01

R2
−4.1363E+00
2.3058E+02
−3.7062E+02
3.1886E+02
−1.1273E+02

R3
4.6327E+06
1.2547E+02
−2.1745E+02
1.8999E+02
−6.6985E+01

R4
−7.1178E−02
−1.0082E+03
9.1429E+02
−3.6082E+02
0.0000E+00

R5
3.6387E+00
2.0795E+02
−2.8480E+02
2.1076E+02
−6.5402E+01

R6
−3.2755E+02
5.7110E+00
−5.1601E+00
2.4692E+00
−4.8604E−01

R7
1.0104E+00
−1.4582E+00
6.0784E−01
−1.4006E−01
1.3355E−02

R8
−4.4796E−02
−3.2981E−01
7.9540E−02
−1.0769E−02
6.2890E−04

R9
−4.6263E+03
−6.5631E−02
1.0815E−02
−1.0011E−03
4.0138E−05

R10
−5.8920E+00
−5.0750E−03
8.3642E−04
−7.5613E−05
2.9005E−06

Table 19 and table 20 show Embodiment 5 design data of inflexion points and arrest points of respective lens in the camera optical lens 50 according to Embodiment 5 of the present invention.

TABLE 19

Number of
Inflexion
Inflexion
Inflexion
Inflexion

inflexion
point
point
point
point

points
position 1
position 2
position 3
position 4

P1R1
1
0.755
/
/
/

P1R2
1
0.265
/
/
/

P2R1
1
0.455
/
/
/

P2R2
1
0.165
/
/
/

P3R1
0
/
/
/
/

P3R2
1
1.005
/
/
/

P4R1
2
0.595
1.255
/
/

P4R2
3
0.535
1.065
1.665
/

P5R1
3
0.935
1.445
1.875
/

P5R2
1
0.475
/
/
/

TABLE 20

Number of
Arrest
Arrest

arrest points
point position 1
point position 2

P1R1
0
/
/

P1R2
1
0.475
/

P2R1
1
0.605
/

P2R2
1
0.205
/

P3R1
0
/
/

P3R2
0
/
/

P4R1
1
0.815
/

P4R2
0
/
/

P5R1
0
/
/

P5R2
1
1.145
/

FIG. 18 and FIG. 19 respectively illustrate a longitudinal aberration and a lateral color of light with wavelengths of 650 nm, 610 nm, 555 nm, 510 nm, 470 nm and 435 nm after passing the camera optical lens 50 according to Embodiment 5. FIG. 20 illustrates a field curvature and a distortion of light with a wavelength of 555 nm after passing the camera optical lens 50 according to Embodiment 5, in which a field curvature S is a field curvature in a sagittal direction and T is a field curvature in a tangential direction.

Table 25 in the following lists values corresponding to the respective conditions.

In the present embodiment, an entrance pupil diameter (ENPD) of the camera optical lens is 1.574 mm. An image height of 1.0H is 2.897 mm. An FOV is 77.20°. Thus, the camera optical lens 50 satisfies design requirements of large apertures, ultra-thin and wide-angle.

Comparative Embodiment

Comparative Embodiment is basically the same as Embodiment 1 and involves symbols having the same meanings as Embodiment 1, and only differences therebetween will be described in the following. An image side surface of a first lens L1 is convex in a paraxial region. An object side surface of a third lens L3 is convex in the paraxial region and an image side surface of the third lens L3 is concave in the paraxial region. The third lens L3 has a positive refractive power.

FIG. 21 shows a schematic diagram of a structure of a camera optical lens 60 according to Comparative Embodiment. Tables 21 and 22 show the design data of a camera optical lens 60 in Comparative Embodiment.

TABLE 21

R
d
nd
vd

S1
∞
d0 =
−0.134

R1
1.637
d1 =
0.911
nd1
1.5444
v1
55.82

R2
−19.410
d2 =
0.033

R3
10.329
d3 =
0.246
nd2
1.6610
v2
20.53

R4
2.415
d4 =
0.300

R5
30.996
d5 =
0.518
nd3
1.5444
v3
55.82

R6
52.177
d6 =
0.353

R7
4.138
d7 =
0.463
nd4
1.5444
v4
55.82

R8
−1.917
d8 =
0.300

R9
−8.745
d9 =
0.354
nd5
1.5346
v5
55.69

R10
1.216
d10 =
0.374

R11
∞
d11 =
0.210
ndg
1.5168
vg
64.17

R12
∞
d12 =
0.232

Table 22 shows aspherical surface data of each lens of the camera optical lens 60 in Comparative Embodiment of the present invention.

TABLE 22

Conic

coefficient
Aspheric surface coefficients

k
A4
A6
A8
A10
A12

R1
4.0785E−01
−1.2792E−02
2.9665E−01
−3.5543E+00
2.0440E+01
−7.1496E+01

R2
−2.4576E+02
−1.5398E−01
5.5833E−01
−2.0019E+00
1.5939E+01
−8.3951E+01

R3
1.4984E+02
−1.7429E−01
3.3791E−01
7.1076E−02
3.7903E+00
−3.8332E+01

R4
−2.9891E+01
8.2905E−02
5.6971E−01
−6.6360E+00
4.8625E+01
−2.2157E+02

R5
5.6859E+02
−2.0743E−01
2.6091E−01
−3.0169E+00
2.1737E+01
−8.7189E+01

R6
−9.1280E+02
−1.9597E−01
−6.2300E−02
−8.2309E−02
1.1909E+00
−3.6004E+00

R7
−2.7085E+01
1.6787E−01
−6.0661E−01
1.3450E+00
−2.1229E+00
2.1781E+00

R8
−1.3133E−02
4.2935E−01
−8.4169E−01
1.3331E+00
−1.3387E+00
8.3874E−01

R9
1.5039E+01
−1.8104E−01
−2.8488E−01
6.7075E−01
−5.4244E−01
2.4214E−01

R10
−6.2160E+00
−1.7685E−01
7.4318E−02
1.6622E−02
−3.4693E−02
1.7984E−02

Conic

coefficient
Aspheric surface coefficients

k
A14
A16
A18
A20

R1
4.0785E−01
1.5672E+02
−2.0921E+02
1.5510E+02
−4.8948E+01

R2
−2.4576E+02
2.3459E+02
−3.6843E+02
3.1490E+02
−1.1578E+02

R3
1.4984E+02
1.2586E+02
−2.1128E+02
1.9053E+02
−7.5198E+01

R4
−2.9891E+01
6.1467E+02
−1.0112E+03
9.0648E+02
−3.4116E+02

R5
5.6859E+02
2.0611E+02
−2.8982E+02
2.2531E+02
−7.4844E+01

R6
−9.1280E+02
5.6928E+00
−5.1381E+00
2.4988E+00
−5.0393E−01

R7
−2.7085E+01
−1.4592E+00
6.0765E−01
−1.4001E−01
1.3479E−02

R8
−1.3133E−02
−3.2980E−01
7.9529E−02
−1.0773E−02
6.2836E−04

R9
1.5039E+01
−6.5633E−02
1.0814E−02
−1.0013E−03
4.0131E−05

R10
−6.2160E+00
−5.0718E−03
8.3675E−04
−7.5615E−05
2.8873E−06

Table 23 and table 24 show Comparative Embodiment design data of inflexion points and arrest points of respective lens in the camera optical lens 60 according to Comparative Embodiment of the present invention.

TABLE 23

Number of
Inflexion
Inflexion
Inflexion
Inflexion

inflexion
point
point
point
point

points
position 1
position 2
position 3
position 4

P1R1
0
/
/
/
/

P1R2
0
/
/
/
/

P2R1
1
0.525
/
/
/

P2R2
1
0.745
/
/
/

P3R1
1
0.125
/
/
/

P3R2
2
0.095
1.035
/
/

P4R1
3
0.645
1.315
1.465
/

P4R2
4
0.625
0.985
1.415
1.755

P5R1
1
0.965
/
/
/

P5R2
2
0.475
2.315
/
/

TABLE 24

Number of
Arrest
Arrest

arrest points
point position 1
point position 2

P1R1
0
/
/

P1R2
0
/
/

P2R1
1
0.675
/

P2R2
0
/
/

P3R1
1
0.205
/

P3R2
1
0.155
/

P4R1
1
0.935
/

P4R2
0
/
/

P5R1
1
1.955
/

P5R2
1
1.185
/

FIG. 22 and FIG. 23 respectively illustrate a longitudinal aberration and a lateral color of light with wavelengths of 650 nm, 610 nm, 555 nm, 510 nm, 470 nm and 435 nm after passing the camera optical lens 60 according to Comparative Embodiment. FIG. 24 illustrates a field curvature and a distortion of light with a wavelength of 555 nm after passing the camera optical lens 60 according to Comparative Embodiment, in which a field curvature S is a field curvature in a sagittal direction and T is a field curvature in a tangential direction.

Table 25 in the following lists values corresponding to the respective conditions. Comparative Embodiment does not satisfy the above condition 2.00≤R6/R5≤10.00.

In the present embodiment, an entrance pupil diameter (ENPD) of the camera optical lens is 1.574 mm. An image height of 1.0H is 2.897 mm. An FOV is 76.20°. Thus, the camera optical lens 60 does not satisfy design requirements of large aperture, ultra-thin and wide-angle.

TABLE 25

Parameters

and
Embodiment
Embodiment
Embodiment
Embodiment
Embodiment
Comparative

conditions
1
2
3
4
5
Embodiment

f1/f
0.782
0.706
0.801
0.884
0.992
0.800

R3/R4
3.055
14.990
3.005
3.674
7.577
4.277

R6/R5
2.135
9.997
2.008
5.451
2.020
1.683

R7/R8
−3.897
−1.508
−11.958
−4.358
−8.379
−2.159

R9/R10
−6.040
−6.975
−3.009
−6.295
−14.836
−7.192

f
3.579
3.405
3.589
3.454
3.510
3.510

f1
2.800
2.404
2.873
3.055
3.482
2.807

f2
−7.722
−4.852
−8.842
−8.621
396.957
−4.788

f3
−28.697
−11.065
−26.458
1.907E+06
−18.006
138.605

f4
2.908
2.271
2.890
2.810
3.019
2.465

f5
−2.121
−2.015
−2.102
−1.977
−2.097
−1.966

f12
3.812
3.930
3.819
4.200
3.458
4.867

FNO
2.230
2.230
2.231
2.230
2.230
2.230

TTL
4.140
4.191
4.143
4.118
4.197
4.294

It is to be understood, however, that even though numerous characteristics and advantages of the present exemplary embodiments have been set forth in the foregoing description, together with details of the structures and functions of the embodiments, the disclosure is illustrative only, and changes may be made in detail, especially in matters of shape, size, and arrangement of parts within the principles of the invention to the full extent indicated by the broad general meaning of the terms where the appended claims are expressed.

Camera Optical Lens

Information

Publication Number

Date Filed

Date Published

Inventors

Original Assignees

CPC

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Abstract

Description

Claims

Priority Claims (1)