Patent Grant
11312370
The present invention relates to a movable carrier auxiliary system, and more particularly to an auxiliary system capable of detecting and identifying an environmental image.
With frequent commercial activities and the rapid expansion of transportation logistics, people are more dependent on the mobile vehicle such as car or motorcycle. At the same time, drivers are paying more and more attention to the protection of their lives and property when driving, and therefore, in addition to the performance and the comfort of the mobile vehicle, it is also considered whether the mobile vehicle to be purchased provides sufficient safety guards or auxiliary devices. Under this trend, in order to increase the safety of vehicles, automobile manufacturers or vehicle equipment design manufacturers have developed various driving safety protection devices or auxiliary devices, such as rearview mirrors, driving recorders, a panoramic image instant displaying of blind vision areas, a global positioning system that records the driving path at any time, and etc.
In addition, with the rapid development of digital cameras and computer visions in daily life, the digital cameras have been applied to driving assistance systems, hoping to reduce the accident rate of traffic accidents through the application of artificial intelligence.
The driver's visual angle changes with the speed of the vehicle, external environmental factors (such as weather, brightness, vehicle conditions), and physiological conditions during driving, making it difficult for the driver to notice the signs on the road, resulting in miss or misinterpret the signs on the road. Especially when changing lanes, the driver should pay attention to the surrounding environment at the same time, thereby it is hard to notice the signs on the road.
Therefore, there is a need for the manufacturers to develop an auxiliary system which could accurately detect the signs on the road, improving the driving safety.
The aspect of embodiment of the present disclosure directs to a movable carrier auxiliary system, which includes a sign detecting device, wherein the sign detecting device includes at least one image capturing module, a storage module, and an operation module. The image capturing module is disposed on a movable carrier for capturing an environment image around the movable carrier. The storage module stores a plurality of sign models. The operation module is electrically connected to the at least one image capturing module and the storage module, thereby to detect whether the environment image has a sign image that matches at least one of the sign models, and to correspondingly generate a detection signal.
Further, the image capturing module includes a lens group; the lens group includes at least two lenses having refractive power and satisfies: 1.0≤f/HEP≤10.0; 0 deg<HAF≤150 deg; and 0.9≤2(ARE/HEP)≤2.0, wherein f is a focal length of the lens group; HEP is an entrance pupil diameter of the lens group; HAF is half a maximum visual angle of the lens group; ARE is a profile curve length measured from a start point where an optical axis of the at least one lens group passes through any surface of one of the at least two lenses, along a surface profile of the corresponding lens, and finally to a coordinate point of a perpendicular distance where is a half of the entrance pupil diameter away from the optical axis.
The lens group uses structural size design and combination of refractive powers, convex and concave surfaces of at least two optical lenses (the convex or concave surface in the disclosure denotes the geometrical shape of an image-side surface or an object-side surface of each lens on an optical axis) to reduce the size and increase the quantity of incoming light of the optical image capturing system, thereby the optical image capturing system could have a better amount of light entering therein and could improve imaging total pixels and imaging quality for image formation.
In an embodiment, the lens group satisfies: 0.9≤ARS/EHD≤2.0, wherein for any surface of any lens, ARS is a profile curve length measured from a start point where the optical axis passes therethrough, along a surface profile thereof, and finally to an end point of a maximum effective radius thereof; EHD is a maximum effective radius thereof.
In an embodiment, the lens group further satisfies: PLTA≤100 μm; PSTA≤100 μm; NLTA≤100 μm; NSTA≤100 μm; SLTA≤100 μm; SSTA≤100 μm; and |TDT|<250%, wherein HOI is a maximum imaging height for image formation perpendicular to the optical axis on an image plane of the image capturing module; PLTA is a transverse aberration at 0.7 HOI in a positive direction of a tangential ray fan aberration of the image capturing module after the longest operation wavelength passing through an edge of the entrance pupil; PSTA is a transverse aberration at 0.7 HOI in the positive direction of the tangential ray fan aberration of the image capturing module after the shortest operation wavelength passing through the edge of the entrance pupil; NLTA is a transverse aberration at 0.7 HOI in a negative direction of the tangential ray fan aberration of the image capturing module after the longest operation wavelength passing through the edge of the entrance pupil; NSTA is a transverse aberration at 0.7 HOI in the negative direction of the tangential ray fan aberration of the image capturing module after the shortest operation wavelength passing through the edge of the entrance pupil; SLTA is a transverse aberration at 0.7 HOI of a sagittal ray fan aberration of the image capturing module after the longest operation wavelength passing through the edge of the entrance pupil; SSTA is a transverse aberration at 0.7 HOI of the sagittal ray fan aberration of the image capturing module after the shortest operation wavelength passing through the edge of the entrance pupil; and TDT is a TV distortion of the image capturing module upon image formation.
In an embodiment, the lens group includes four lenses having refractive power, which is constituted by a first lens, a second lens, a third lens, and a fourth lens in order along the optical axis from an object side to an image side; and the lens group satisfies: 0.1≤InTL/HOS≤0.95; wherein HOS is a distance in parallel with the optical axis between an object-side surface of the first lens and an image plane of the image capturing module; InTL is a distance in parallel with the optical axis from the object-side surface of the first lens to an image-side surface of the fourth lens.
In an embodiment, the lens group includes five lenses having refractive power, which is constituted by a first lens, a second lens, a third lens, a fourth lens, and a fifth lens in order along the optical axis from an object side to an image side; and the lens group satisfies: 0.1≤InTL/HOS≤0.95; wherein HOS is a distance in parallel with the optical axis between an object-side surface of the first lens and an image plane of the image capturing module; InTL is a distance in parallel with the optical axis from the object-side surface of the first lens to an image-side surface of the fifth lens.
In an embodiment, the lens group includes six lenses having refractive power, which is constituted by a first lens, a second lens, a third lens, a fourth lens, a fifth lens, and a sixth lens in order along the optical axis from an object side to an image side; and the lens group satisfies: 0.1≤InTL/HOS≤0.95; wherein HOS is a distance in parallel with the optical axis between an object-side surface of the first lens and an image plane of the image capturing module; InTL is a distance in parallel with the optical axis from the object-side surface of the first lens to an image-side surface of the sixth lens.
In an embodiment, the lens group includes seven lenses having refractive power, which is constituted by a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, and a seventh lens in order along the optical axis from an object side to an image side; and the lens group satisfies: 0.1≤InTL/HOS≤0.95; wherein HOS is a distance in parallel with the optical axis between an object-side surface of the first lens and an image plane of the image capturing module; InTL is a distance in parallel with the optical axis from the object-side surface of the first lens to an image-side surface of the seventh lens.
In an embodiment, the lens group further includes an aperture, and the aperture satisfies: 0.2≤InS/HOS≤1.1; wherein HOS is a distance in parallel with the optical axis between an object-side surface of the first lens and an image plane of the at least one lens group; InS is a distance on the optical axis between the aperture and an image plane of the image capturing module.
The lens parameter related to a length or a height in the lens:
A maximum height for image formation of the optical image capturing system is denoted by HOI. A height of the optical image capturing system (i.e., a distance between an object-side surface of the first lens and an image plane on an optical axis) is denoted by HOS. A distance from the object-side surface of the first lens to the image-side surface of the seventh lens is denoted by InTL. A distance from the first lens to the second lens is denoted by IN12 (for instance). A central thickness of the first lens of the optical image capturing system on the optical axis is denoted by TP1 (for instance).
The lens parameter related to a material in the lens:
An Abbe number of the first lens in the optical image capturing system is denoted by NA1 (for instance). A refractive index of the first lens is denoted by Nd1 (for instance).
The lens parameter related to a view angle of the lens:
A view angle is denoted by AF. Half of the view angle is denoted by HAF. A major light angle is denoted by MRA.
The lens parameter related to exit/entrance pupil in the lens:
An entrance pupil diameter of the optical image capturing system is denoted by HEP. For any surface of any lens, a maximum effective radius (EHD) is a perpendicular distance between an optical axis and a crossing point on the surface where the incident light with a maximum viewing angle of the optical image capturing system passing the very edge of the entrance pupil. For example, the maximum effective radius of the object-side surface of the first lens is denoted by EHD11, the maximum effective radius of the image-side surface of the first lens is denoted by EHD12, the maximum effective radius of the object-side surface of the second lens is denoted by EHD21, the maximum effective radius of the image-side surface of the second lens is denoted by EHD22, and so on.
The lens parameter related to an arc length of the shape of a surface and a surface profile:
For any surface of any lens, a profile curve length of the maximum effective radius is, by definition, measured from a start point where the optical axis of the belonging optical image capturing system passes through the surface of the lens, along a surface profile of the lens, and finally to an end point of the maximum effective radius thereof. In other words, the curve length between the aforementioned start and end points is the profile curve length of the maximum effective radius, which is denoted by ARS. For example, the profile curve length of the maximum effective radius of the object-side surface of the first lens is denoted by ARS11, the profile curve length of the maximum effective radius of the image-side surface of the first lens is denoted by ARS12, the profile curve length of the maximum effective radius of the object-side surface of the second lens is denoted by ARS21, the profile curve length of the maximum effective radius of the image-side surface of the second lens is denoted by ARS22, and so on.
For any surface of any lens, a profile curve length of half the entrance pupil diameter (HEP) is, by definition, measured from a start point where the optical axis of the belonging optical image capturing system passes through the surface of the lens, along a surface profile of the lens, and finally to a coordinate point of a perpendicular distance where is half the entrance pupil diameter away from the optical axis. In other words, the curve length between the aforementioned stat point and the coordinate point is the profile curve length of half the entrance pupil diameter (HEP), and is denoted by ARE. For example, the profile curve length of half the entrance pupil diameter (HEP) of the object-side surface of the first lens is denoted by ARE11, the profile curve length of half the entrance pupil diameter (HEP) of the image-side surface of the first lens is denoted by ARE12, the profile curve length of half the entrance pupil diameter (HEP) of the object-side surface of the second lens is denoted by ARE21, the profile curve length of half the entrance pupil diameter (HEP) of the image-side surface of the second lens is denoted by ARE22, and so on.
The lens parameter related to a depth of the lens shape:
A displacement from a point on the object-side surface of the sixth lens, which is passed through by the optical axis, to a point on the optical axis, where a projection of the maximum effective semi diameter of the object-side surface of the sixth lens ends, is denoted by InRS61 (the depth of the maximum effective semi diameter). A displacement from a point on the image-side surface of the sixth lens, which is passed through by the optical axis, to a point on the optical axis, where a projection of the maximum effective semi diameter of the image-side surface of the seventh lens ends, is denoted by InRS62 (the depth of the maximum effective semi diameter). The depth of the maximum effective semi diameter (sinkage) on the object-side surface or the image-side surface of any other lens is denoted in the same manner.
The lens parameter related to the lens shape:
A critical point C is a tangent point on a surface of a specific lens, and the tangent point is tangent to a plane perpendicular to the optical axis and the tangent point cannot be a crossover point on the optical axis. Following the above description, a distance perpendicular to the optical axis between a critical point CM on the object-side surface of the fifth lens and the optical axis is HVT51 (for instance), and a distance perpendicular to the optical axis between a critical point C52 on the image-side surface of the fifth lens and the optical axis is HVT52 (for instance). A distance perpendicular to the optical axis between a critical point C61 on the object-side surface of the sixth lens and the optical axis is HVT61 (for instance), and a distance perpendicular to the optical axis between a critical point C62 on the image-side surface of the sixth lens and the optical axis is HVT62 (for instance). A distance perpendicular to the optical axis between a critical point on the object-side or image-side surface of other lenses is denoted in the same manner.
The object-side surface of the seventh lens has one inflection point IF711 which is nearest to the optical axis, and the sinkage value of the inflection point IF711 is denoted by SGI711 (for instance). A distance perpendicular to the optical axis between the inflection point IF711 and the optical axis is HIF711 (for instance). The image-side surface of the seventh lens has one inflection point IF721 which is nearest to the optical axis, and the sinkage value of the inflection point IF721 is denoted by SGI721 (for instance). A distance perpendicular to the optical axis between the inflection point IF721 and the optical axis is HIF721 (for instance).
The object-side surface of the seventh lens has one inflection point IF712 which is the second nearest to the optical axis, and the sinkage value of the inflection point IF712 is denoted by SGI712 (for instance). A distance perpendicular to the optical axis between the inflection point IF712 and the optical axis is HIF712 (for instance). The image-side surface of the seventh lens has one inflection point IF722 which is the second nearest to the optical axis, and the sinkage value of the inflection point IF722 is denoted by SGI722 (for instance). A distance perpendicular to the optical axis between the inflection point IF722 and the optical axis is HIF722 (for instance).
The object-side surface of the seventh lens has one inflection point IF713 which is the third nearest to the optical axis, and the sinkage value of the inflection point IF713 is denoted by SGI713 (for instance). A distance perpendicular to the optical axis between the inflection point IF713 and the optical axis is HIF713 (for instance). The image-side surface of the seventh lens has one inflection point IF723 which is the third nearest to the optical axis, and the sinkage value of the inflection point IF723 is denoted by SGI723 (for instance). A distance perpendicular to the optical axis between the inflection point IF723 and the optical axis is HIF723 (for instance).
The object-side surface of the seventh lens has one inflection point IF714 which is the fourth nearest to the optical axis, and the sinkage value of the inflection point IF714 is denoted by SGI714 (for instance). A distance perpendicular to the optical axis between the inflection point IF714 and the optical axis is HIF714 (for instance). The image-side surface of the seventh lens has one inflection point IF724 which is the fourth nearest to the optical axis, and the sinkage value of the inflection point IF724 is denoted by SGI724 (for instance). A distance perpendicular to the optical axis between the inflection point IF724 and the optical axis is HIF724 (for instance).
An inflection point, a distance perpendicular to the optical axis between the inflection point and the optical axis, and a sinkage value thereof on the object-side surface or image-side surface of other lenses is denoted in the same manner.
The lens parameter related to an aberration:
Optical distortion for image formation in the optical image capturing system is denoted by ODT. TV distortion for image formation in the optical image capturing system is denoted by TDT. Further, the range of the aberration offset for the view of image formation may be limited to 50%-100% field. An offset of the spherical aberration is denoted by DFS. An offset of the coma aberration is denoted by DFC.
The length of the contour curve of any surface of a single lens in the range of the maximum effective radius affects the surface correction aberration and the optical path difference between the fields of view. The longer the profile curve length, the better the ability to correct the aberration, but at the same time It will increase the difficulty in manufacturing, so it is necessary to control the length of the profile curve of any surface of a single lens within the maximum effective radius, in particular to control the profile length (ARS) and the surface within the maximum effective radius of the surface. The proportional relationship (ARS/TP) between the thicknesses (TP) of the lens on the optical axis. For example, the length of the contour curve of the maximum effective radius of the side surface of the first lens object is represented by ARS11, and the thickness of the first lens on the optical axis is TP1, and the ratio between the two is ARS11/TP1, and the maximum effective radius of the side of the first lens image side. The length of the contour curve is represented by ARS12, and the ratio between it and TP1 is ARS12/TP1. The length of the contour curve of the maximum effective radius of the side of the second lens object is represented by ARS21, the thickness of the second lens on the optical axis is TP2, the ratio between the two is ARS21/TP2, and the contour of the maximum effective radius of the side of the second lens image The length of the curve is represented by ARS22, and the ratio between it and TP2 is ARS22/TP2. The proportional relationship between the length of the profile of the maximum effective radius of any surface of the remaining lenses in the optical imaging system and the thickness (TP) of the lens on the optical axis to which the surface belongs, and so on.
The optical image capturing system has a maximum image height HOI on the image plane vertical to the optical axis. A transverse aberration at 0.7 HOI in the positive direction of the tangential ray fan aberration after the longest operation wavelength passing through the edge of the entrance pupil is denoted by PLTA; a transverse aberration at 0.7 HOI in the positive direction of the tangential ray fan aberration after the shortest operation wavelength passing through the edge of the entrance pupil is denoted by PSTA; a transverse aberration at 0.7 HOI in the negative direction of the tangential ray fan aberration after the longest operation wavelength passing through the edge of the entrance pupil is denoted by NLTA; a transverse aberration at 0.7 HOI in the negative direction of the tangential ray fan aberration after the shortest operation wavelength passing through the edge of the entrance pupil is denoted by NSTA; a transverse aberration at 0.7 HOI of the sagittal ray fan aberration after the longest operation wavelength passing through the edge of the entrance pupil is denoted by SLTA; a transverse aberration at 0.7 HOI of the sagittal ray fan aberration after the shortest operation wavelength passing through the edge of the entrance pupil is denoted by SSTA.
For any surface of any lens, the profile curve length within a half the entrance pupil diameter (HEP) affects the ability of the surface to correct aberration and differences between optical paths of light in different fields of view. With longer profile curve length, the ability to correct aberration is better. However, the difficulty of manufacturing increases as well. Therefore, the profile curve length within a half the entrance pupil diameter (HEP) of any surface of any lens has to be controlled. The ratio between the profile curve length (ARE) within a half the entrance pupil diameter (HEP) of one surface and the thickness (TP) of the lens, which the surface belonged to, on the optical axis (i.e., ARE/TP) has to be particularly controlled. For example, the profile curve length of a half the entrance pupil diameter (HEP) of the object-side surface of the first lens is denoted by ARE11, the thickness of the first lens on the optical axis is TP1, and the ratio between these two parameters is ARE11/TP1; the profile curve length of a half the entrance pupil diameter (HEP) of the image-side surface of the first lens is denoted by ARE12, and the ratio between ARE12 and TP1 is ARE12/TP1. The profile curve length of a half the entrance pupil diameter (HEP) of the object-side surface of the second lens is denoted by ARE21, the thickness of the second lens on the optical axis is TP2, and the ratio between these two parameters is ARE21/TP2; the profile curve length of a half the entrance pupil diameter (HEP) of the image-side surface of the second lens is denoted by ARE22, and the ratio between ARE22 and TP2 is ARE22/TP2. For any surface of other lenses in the optical image capturing system, the ratio between the profile curve length of half the entrance pupil diameter (HEP) thereof and the thickness of the lens which the surface belonged to is denoted in the same manner.
The present invention provides a processing method for a movable carrier auxiliary system, which includes the following steps: A. the image capturing module captures environmental images around a movable carrier; B. the operation module receives the environmental images, and detects whether the environment image has a sign image that matches at least one of the sign models stored in the storage module, and correspondingly outputs a detection signal.
With the movable carrier auxiliary system and the processing method thereof described above, it could effectively determine that the environmental image has the sign image that matches the sign models, thereby to correspondingly generates a detection signal for subsequent processing, improving driving safety.
The present invention will be best understood by referring to the following detailed description of some illustrative embodiments in conjunction with the accompanying drawings, in which
A movable carrier auxiliary system of the present invention mainly includes a system design and an optical design, wherein system embodiments will be described first.
Take
The storage module 0012 stores a plurality of sign models and a plurality of action modes corresponding to the sign models. The operation module 0013 electrically connected to the image capturing module 0011 and the storage module 0012 for detecting whether the environment image has a sign image that matches at least one of the sign models, and correspondingly generating a detection signal, wherein the sign image could be, for example, traffic signs, traffic symbols, or a sign on another vehicle (e.g. a brake light, an indicator light, a reversing light). As shown in
In the current embodiment, the sign detecting device 0010 further includes a luminance sensor 0014 electrically connected to the image capturing module 0011 for detecting the luminance on at least the direction in which the image capturing module 0011 captures the image. When the luminance measured by the luminance sensor 0014 is greater than an upper threshold, the image capturing module 0011 captures the environment image in a way that reduces amount of light entering. When the luminance measured by the luminance sensor 0014 is less than a lower threshold, the image capturing module 0011 captures the environment image in a way that increases the amount of light entering. In this way, an environment image with appropriate luminance could be obtained, avoiding overexposure or underexposure.
In the current embodiment, the movable carrier auxiliary system 0001 further includes a control device 0020 disposed on the movable carrier 0000 and is electrically connected to the operation module 0013 and the storage module 0012. The control device 0020 is adapted to correspondingly control the movable carrier 0000 to operate based on one of the action modes corresponding to the matching sign model when the control device 0020 receives a detection signal that the environmental image has a sign image matching at least one of the sign models. For example, the control device 0020 could control the movable carrier 0000 to slow down, to brake, to speed up, etc.
Different controls could be carried out depending on different movement states of the movable carrier 0000. The movable carrier auxiliary system 0001 further includes a state detecting device 0021 disposed on the movable carrier 0000 and electrically connected to the control device 0020 for detecting a movement state of the movable carrier 0000 and generating a state signal. In practice, the state detecting device 0021 could include at least one of a steering angle sensor, an inertia measuring device, and a speed sensor, wherein the steering angle sensor detects a steering angle of the movable carrier 0000; the inertia measuring device is adapted to detect an acceleration, an inclined angle, or a yaw rate of the movable carrier 0000; the speed sensor is adapted to detect a speed of the movable carrier 0000. The state detecting device 0021 correspondingly outputs the state signal based on a detecting result of at least one of the speed sensor, the inertia measuring device, and the steering angle sensor.
When the control device 0020 receives a detection signal that the environmental image has a sign image matching at least one of the sign models, the control device 0020 controls the movable carrier 0000 to operate based on the state signal and one of the action modes corresponding to the matching sign model. For instance, the control device 0020 correspondingly controls the movable carrier 0000 based on one of the action modes of automatic driving and the state signal of a current moving speed, preventing the person in the movable carrier 0000 feels uncomfortable due to the action mode switches.
As shown in
In practice, the image capturing modules 0011 could include two image capturing modules 0011 for capturing the environment images with different depth of fields. The operation module 0013 detects whether a three-dimensional environment image formed by the environment images captured by the two image capturing modules 0011 has a sign image that matches at least one of the sign models, and detects a distance between the movable carrier 0000 and the sign image matching at least one of the sign models, and correspondingly generates the detection signal.
In addition to detecting the sign image via the environment image, the sign detecting device 0010 further includes a detection wave transceiver module 0015 electrically connected to the operation module 0013. The detection wave transceiver module 0015 sends a detection wave on at least the direction in which the image capturing module 0011 captures the image (e.g. a direction in front of the movable carrier 0000), and receives the reflection detection wave of the detection wave, wherein the detection wave could be ultrasonic wave, millimeter wave radar, lidar, infrared light, laser, or a combination of the foregoing. The operation module 0013 further detects a contour of objects within the direction in which the image capturing module 0011 captures the image by the reflection detection wave. The operation module 0013 analyzes whether the environmental image has a sign image that matches at least one of the sign models by comparing and matching at least one of the contours of the objects with the sign models, and correspondingly generates the detection signal, thereby to determine a correctness of the detected sign image via the environmental image and the reflection detection wave.
In addition, the detection wave could further detect the distance between the movable carrier 0000 and the detected sign image, thereby to determine correctness of the safe distance via the environmental image and the reflection detection wave.
In order to generate a warning of the detected sign image, the movable carrier auxiliary system 0001 further includes a warning module 0022 electrically connected to the operation module 0013, the storage module 0012, and the state detecting device 0021. In addition, the storage module 0012 further stores a plurality of state limitations corresponding to the sign models, wherein the state limitations could be, for example, a speed limit of 60 Km/h, no right turn, etc.
The warning module 0022 reads at least one of the state limitations in the detection signal corresponding to the matching sign model from the storage module 0012 when the warning module 0022 receives the detection signal and state signal of the movable carrier 0000, and generates a warning message when the movement state of the movable carrier 0000 does not in accordance with at least one of the state limitations. For example, the warning module 0022 generates the warning message when a sign that speed limit of 60 Km/h is detected and the movement state of the movable carrier 0000 is that the speed of the movable carrier 0000 exceeds 60 Km/h which is not in accordance with the state limitation (i.e., speed limit of 60 Km/h). For example, the warning module 0022 generates the warning message when a sign that no right turn is detected and the movement state of the movable carrier 0000 is that the movable carrier 0000 turns right which is not in accordance with the state limitation (i.e., no right turn).
In order to prompt the driver, the movable carrier auxiliary system 0001 further includes a warning member 0023 electrically connected to the warning module 0022 and a displaying device 0024, wherein the warning member 0023 is adapted to receive the warning message and to correspondingly generate at least one of light and sound when the warning module 0022 sends the warning message. For example, generate a warning of light or sound when drives above the speed limit or when turns in a situation that turning is prohibited. The warning member 0023 includes a buzzer or/and a light emitting diode (LED), which can be respectively disposed at the left and right sides of the movable carrier 0000 (e.g. an inner or outer area near the driver seat of the movable carrier 0000, such as the front pillar, the left/right rear-view mirror, the fascia, the front windshield, etc.), so as to operate corresponding to the detection results of the movable carrier 0000.
The displaying device 0024 is adapted to display the warning message. For example, the warning message could be displayed on the displaying device 0024 as an image, a text, or both of the image and the text. At least one of the warning member 0023 and the displaying device 0024 prompts the driver that the movable carrier 0000 is not in accordance with the state limitation corresponding to the sign model.
The vehicle electronic rear-view mirror 0100 is assembled in a casing 0110, wherein the casing 0110 has an opening (not shown). More specifically, the opening of the casing 0110 overlaps with a reflective layer 0190 of the vehicle electronic rear-view mirror 0100 (as shown in
Referring to
In this embodiment, the first transparent assembly 0120 includes a first incidence surface 0122 and a first exit surface 0124, wherein an incoming light image from the rear of the driver enters the first transparent assembly 0120 via the first incidence surface 0122, and is emitted via the first exit surface 0124. The second transparent assembly 0130 includes a second incidence surface 0132 and a second exit surface 0134, wherein the second incidence surface 0132 faces the first exit surface 0124, and a gap is formed between the second incidence surface 0132 and the first exit surface 0124 by an adhesive 0114. After being emitted via the first exit surface 0124, the incoming light image enters the second transparent assembly 0130 via the second incidence surface 0132 and emitted via the second exit surface 0134.
An electro-optic medium layer 0140 is disposed in the gap between the first exit surface 0124 of the first transparent assembly 0120 and the second incidence surface 0132 of the second transparent assembly 0130. At least one transparent electrode 0150 is disposed between the first transparent assembly 0120 and the electro-optic medium layer 0140. The electro-optic medium layer 0140 is disposed between the first transparent assembly 0120 and at least one reflective layer 0190. A transparent conductive layer 0160 is disposed between the first transparent assembly 0120 and the electro-optic medium layer 0140. Another transparent conductive layer 0160 is disposed between the second transparent assembly 0130 and the electro-optic medium layer 0140. An electrical connector 0170 is electrically connected to the transparent conductive layer 0160, and another electrical connector 0170 is electrically connected to the transparent electrode 0150, which is electrically connected to the electro-optic medium layer 0140 directly or indirectly through the another transparent conductive layer 0160, thereby transmitting electrical energy to the electro-optic medium layer 0140 to change a transparency of the electro-optic medium layer 0140. When a luminance of the incoming light image exceeds a certain luminance (e.g. strong light from the headlight of the rear vehicle), a glare sensor 0112 electrically connected to a control member 0180 receives the light energy and convert it into a signal, and the control member 0180 determines whether the luminance of the incoming light image exceeds a predetermined luminance, and if a glare is generated, the electrical energy is provided to the electro-optic medium layer 0140 by the electrical connector 0170 to generate an anti-glare performance Generally, if the incoming light image has a strong luminance, the glare could be generated and thus affects the driver's line of sight, thereby endangering the driving safety.
In addition, the transparent electrode 0150 and the reflective layer 0190 could respectively cover the entire surfaces of the first transparent assembly 0120 and the second transparent assembly 0130. However, this is not a limitation on the present invention. In this embodiment, the transparent electrode 0150 could use a material selected from metal oxides, such as indium tin oxide, indium zinc oxide, aluminum tin oxide, aluminum zinc oxide, indium antimony zinc oxide, or other suitable oxides, or a stacked layer composed of at least two of the foregoing oxides. Moreover, the reflective layer 0190 could be conductive and made of a material selected from the group consisting of silver (Ag), copper (Cu), aluminum (Al), titanium (Ti), chromium (Cr), molybdenum (Mo), and an alloy thereof, or contains silicon dioxide or a transparent conductive material. However, the material of the transparent electrode 0150 and the material of the reflective layer 0190 are not limitations on the present invention. In other embodiments, the material of the transparent electrode 0150 and the material of the reflective layer 0190 could be other types of materials.
The electro-optic medium layer 0140 could be made of an organic material or an inorganic material. However, this is not a limitation on the present invention. In the current embodiment, the electro-optic medium layer 0140 could be an electrochromic material. The electro-optic medium layer 0140 is disposed between the first transparent assembly 0120 and the second transparent assembly 0130 and also disposed between the first transparent assembly 0120 and the reflective layer 0190. More specifically, the transparent electrode 0150 is disposed between the first transparent assembly 0120 and the electro-optic medium layer 0140 (i.e., the electrochromic material layer). In an embodiment, the reflective layer 0190 could be disposed between the second transparent assembly 0130 and the electro-optic medium layer 0140. In addition, in the current embodiment, the vehicle electronic rear-view mirror 0100 further includes an adhesive 0114 located between the first transparent assembly 0120 and the second transparent assembly 0130 and surrounding the electro-optic medium layer 0140. The electro-optic medium layer 0140 is co-packaged by the adhesive 0114, the first transparent assembly 0120, and the second transparent assembly 0130.
In the current embodiment, the transparent conductive layer 0160 is disposed between the electro-optic medium layer 0140 and the reflective layer 0190. More specifically, the transparent conductive layer 0160 could be used as an anti-oxidation layer of the reflective layer 0190, so that the electro-optic medium layer 0140 could be prevented from direct contact with the reflective layer 0190, thereby preventing the reflective layer 0190 from being corroded by the organic materials, and extending the service life of the vehicle electronic rear-view mirror 0100 of the current embodiment. In addition, the electro-optic medium layer 0140 is co-packaged by the adhesive 0114, the transparent electrode 0150, and the transparent conductive layer 0160. In the current embodiment, the transparent conductive layer 0160 contains a material selected from the group consisting of indium tin oxide (ITO), indium zinc oxide (IZO), Al-doped ZnO (AZO), fluorine-doped tin oxide, and a combination thereof.
In the current embodiment, the vehicle electronic rear-view mirror 0100 could be optionally provided with the electrical connector 0170. For instance, in an embodiment, the electrical connector 0170 could be a conducting wire or a conducting structure electrically connected to the transparent electrode 0150 and the reflective layer 0190, so that the transparent electrode 0150 and the reflective layer 0190 could be electrically connected to the at least one control member 0180, which provides a driving signal via the conducting wire or the conducting structure, thereby driving the electro-optic medium layer 0140.
When the electro-optic medium layer 0140 is enabled, the electro-optic medium layer 0140 would undergo an electrochemical redox reaction and change its energy level to be in a diming state. When external light passes through the opening of the casing 0110 and reaches the electro-optic medium layer 0140, the external light would be absorbed by the electro-optic medium layer 0140 which is in the diming state, so that the vehicle electronic rear-view mirror 0100 is switched to an anti-glare mode. On the other hand, when the electro-optic medium layer 0140 is disenabled, the electro-optic medium layer 0140 is transparent. At this time, the external light passing through the opening of the casing 0110 passes through the electro-optic medium layer 0140 to be reflected by the reflective layer 0190, so that the vehicle electronic rear-view mirror 0100 is switched to a mirror mode.
More specifically, the first transparent assembly 0120 has the first incidence surface 0122 which is away from the second transparent assembly 0130. For instance, external light from the rear vehicles enters the vehicle electronic rear-view mirror 0100 via the first incidence surface 0122, and then the vehicle electronic rear-view mirror 0100 reflects the external light such that the external light leaves the vehicle electronic rear-view mirror 0100 via the first incidence surface 0122. In addition, eyes of the vehicle driver could receive the external light reflected by the vehicle electronic rear-view mirror 0100 to know the position of other vehicles behind. Moreover, the reflective layer 0190 could have the optical property of partial transmission and partial reflection by selecting a suitable material and designing a proper film thickness.
The display of the vehicle electronic rear-view mirror 0100 could be an LCD or an LED, and the display could be disposed inside or outside the casing 0110, for example, on the side of the second transparent assembly 0130 away from the first transparent assembly 0120, or on the second exit surface 0134 of the second transparent assembly 0130 away from the first transparent assembly 0120. Since the reflective layer 0190 has the optical property of partial transmission and partial reflection, the image light emitted by the display could pass through the reflective layer 0190, thereby allowing the user to view the internal image displayed by the display so as to display the warning message.
In the current embodiment, the movable carrier auxiliary system 0001 further includes a global positioning device 0025 and a road map unit 0026 which are disposed in the movable carrier 0000 and are electrically connected to the operation module 0013. The global positioning device 0025 continuously generates and outputs a global positioning information. The road map unit 0026 stores a plurality of road information, wherein each of the road information contains at least one sign information, and could be a map of each of a plurality of roads. A certain location of the map of each of the roads has the at least one sign information (e.g. an appearance of the sign, a content of an instruction of the sign, etc.). The operation module 0013 continuously receives the global positioning information and continuously compares the road information, thereby to find one of the road information corresponding to the global positioning information at that time. The operation module 0013 then captures the at least one sign information of the corresponding road information corresponding to the global positioning information at the time, and correspondingly determines whether the environment image has a sign image that matches at least one of the sign models, and correspondingly generates a detection signal. In this way, the correctness of the detected sign image could be determined via the environmental image and the sign information of the road information.
The movable carrier auxiliary system 0001 further includes an update module 0027 electrically connected to the road map unit 0026, the global positioning device 0025, and the storage module 0012, wherein the update module 0027 could update following information.
The update module 0027 could update at least one of the road information stored in the road map unit 0026 and/or could update at least one of the sign information.
The update module 0027 could obtain a region or a country that the movable carrier 0000 locates based on the global positioning information, and correspondingly update at least one of the road information stored in the road map unit 0026 and/or could update at least one of the sign information.
The update module 0027 could update at least one of the sign models. In addition, the update module 0027 could obtain a region or a country that the movable carrier 0000 locates based on the global positioning information, and correspondingly update at least one of the sign models stored in the storage module 0012.
In the current embodiment, the sign detecting device 0010 further includes an information receiving device 0016 electrically connected to the operation module 0013, wherein the information receiving device 0016 is adapted to receive at least one sign information (e.g. a content of the sign information is speed limit of 60 Km/h) outputted by a control center or a traffic sign in a wireless manner. The operation module 0013 determines whether the environment image has a sign image that matches at least one of the sign models via the at least one sign information, and correspondingly generates a detection signal, thereby to determine the correctness of the detected sign image via the environmental image and the sign information received by wireless communication.
The storage module 0012 further stores a plurality of sign categories, and each of the sign categories has the sign models, wherein the sign categories could include a warning sign, a prohibition sign, an indication sign, an auxiliary sign, and etc. Each of the sign categories has at least one kind of sign models. The operation module 0013 correspondingly analyzes the sign category of the matching sign model after determining whether the environment image has a sign image that matches at least one of the sign models, and generates a detection signal based on an analysis result of the operation module 0013.
The movable carrier auxiliary system 0001 further includes a prompting device 0028 electrically connected to the operation module 0013 for correspondingly generating a prompt message corresponding to the matching sign models when a detection signal that the environmental image has a sign image matching at least one of the sign models is received. In addition, the operation module 0013 could be electrically connected to a prompting member 0029 of the prompting device 0028, so that the prompting member 0029 could correspondingly generate a voice sound to the movable carrier 0000. For instance, the prompting member 0029 prompts that the speed limit is 60 Km/h via the voice sound when a sign that the speed limit of 60 Km/h is detected.
With the aforementioned design, the processing method according to the current embodiment could be executed, wherein the processing method includes the following steps shown in
The image capturing module 0011 continuously captures the environmental image around a movable carrier;
the operation module 0013 receives the environmental image;
the operation module 0013 detects whether the environment image has a sign image that matches at least one of the sign models stored in the storage module 0012;
if the environment image has a sign image that matches at least one of the sign models stored in the storage module 0012, the operation module 0013 correspondingly outputs the detection signal, and the image capturing module 0011 continuously captures the environmental image;
otherwise, the image capturing module 0011 continuously captures the environmental image.
A plurality of algorithms which could be applied to the operation module 0013 are provided followed, so that the operation module 0013 could determine whether the environment image has a sign image that matches at least one of the sign models stored in the storage module 0012.
(1) The operation module 0013 first respectively replaces images of objects in the environmental image with a color mask along a contour of the objects, wherein the colors of the color masks are different from one another. Then, the operation module 0013 analyzes whether a shape of each of the color masks matching the sign models stored in the storage module 0012, and correspondingly generates the detection signal.
(2) The operation module 0013 first performs at least one of geometric conversion, geometric correction, spatial conversion, color conversion, contrast enhancement, noise removal, smoothing, sharpening, and brightness adjustment on the environmental image, and then detects whether the environmental image has a sign image that matches at least one of the sign models stored in the storage module 0012, and correspondingly generates the detection signal.
(3) The operation module 0013 first captures at least one of features of a point, a line, an edge, an angle, an area, and the like, and then uses the captured feature to detect whether the environmental image has a sign image that matches at least one of the sign models stored in the storage module 0012, and correspondingly generates the detection signal.
(4) The operation module 0013 first detects whether the environmental image has a sign image that matches at least one of the sign models stored in the storage module 0012, and then analyzes the sign category of the matching sign model, and correspondingly generates the detection signal based on an analysis result of the operation module 0013.
By applying any of the various algorithms described above, the operation module 0013 could determine whether the environmental image has a sign image that matches at least one of the sign models stored in the storage module 0012, and correspondingly generates the detection signal. However, the algorithms are not limited by the aforementioned design. In addition, it could further work in accordance with the detection wave transceiver module 0015 and the distance determination to generates the detection signal.
In the current embodiment, the processing method further includes that when the control device 0020 receives a detection signal that the environmental image has a sign image matching at least one of the sign models, the control device 0020 correspondingly retrieves the action mode from the storage module 0012 based on the matching sign model, thereby to correspondingly control the movable carrier 0000. In addition, it could further work in accordance with the state detecting device 0021 to control the movable carrier 0000.
As shown in
The movable carrier auxiliary system 0002 according to the third system embodiment has almost the same structures with that of the first system embodiment, except that a sign detecting device 0032 includes four image capturing modules 0011 and four luminance sensors 0014, wherein the image capturing modules 0011 are respectively disposed on a front side, a backside, a left side, and a right side of the movable carrier 000E for capturing the environment images on a frontward, a rearward, a leftward, and a rightward of the movable carrier 000E. In the current embodiment, the front side of the movable carrier 000E could be, for example, around a head of the movable carrier 000E, near a front windshield inside of the movable carrier 000E, or on a front bumper. The backside of the movable carrier 000E could be, for example, around a trunk of the movable carrier 000E or on a rear bumper. The left side of the movable carrier 000E could be, for example, a left-rear view mirror. The right side of the movable carrier 000E could be, for example, a right-rear view mirror.
The operation module 0013 detects whether an environment image spliced by the environment images that the image capturing modules 0011 capture has a sign image that matches at least one of the sign models, and correspondingly generating a detection signal. A horizontal angle of view covered by the environment image spliced by the environment images that the image capturing modules 0011 capture is 360 degrees. The environment image spliced by the environment images that the image capturing modules 0011 capture could be spliced by the operation module 0013.
In the aforementioned design, four image capturing modules 0011 are used for illustration. As shown in
In practice, the two image capturing modules 0011 disposed on the left side and the right side of a movable carrier 000F could face forward of the movable carrier 000F to capture and generate a forward environment image of the movable carrier 000F. Alternatively, the two image capturing modules 0011 disposed on the left side and the right side of a movable carrier 000F could face rearward of the movable carrier 000F to capture and generate a rearward environment image of the movable carrier 000F. No matter the two image capturing modules 0011 facing forward or rearward, a horizontal angle of view covered by the forward/rearward environment image is at least 180 degrees.
As shown in
In practice, the processing method according to the first system embodiment could be applied to the second to the fifth system embodiments, and the flicker elimination device 0031 according to the second system embodiment could be applied to the first system embodiment and the third to the fifth system embodiments.
Furthermore, the optical embodiments will be described in detail as follows. The optical image capturing system could work with three wavelengths, including 486.1 nm, 587.5 nm, and 656.2 nm, wherein 587.5 nm is the main reference wavelength and is also the reference wavelength for extracting the technical characteristics. The optical image capturing system could also work with five wavelengths, including 470 nm, 510 nm, 555 nm, 610 nm, and 650 nm, wherein 555 nm is the main reference wavelength and is also the reference wavelength for extracting the technical characteristics.
The optical image capturing system of the present invention satisfies 0.5≤ΣPPR/|ΣNPR|≤15, and preferably satisfies 1≤ΣPPR/|ΣNPR|≤3.0, where PPR is a ratio of the focal length f of the optical image capturing system to a focal length fp of each of the lenses with positive refractive power; NPR is a ratio of the focal length f of the optical image capturing system to a focal length fn of each of the lenses with negative refractive power; ΣPPR is a sum of the PPRs of each positive lens; and ΣNPR is a sum of the NPRs of each negative lens. It is helpful for control of an entire refractive power and an entire length of the optical image capturing system.
The optical image capturing system further includes an image sensor provided on the image plane. The optical image capturing system of the present invention satisfies HOS/HOI≤50 and 0.5≤HOS/f≤150, and preferably satisfies 1≤HOS/HOI≤40 and 1≤HOS/f≤140, where HOI is half a length of a diagonal of an effective sensing area of the image sensor, i.e., the maximum image height, and HOS is a distance in parallel with the optical axis between an object-side surface of the first lens and the image plane of the at least one lens group. It is helpful for the miniaturization of the optical image capturing system and the application in light, thin, and portable electronic products.
The optical image capturing system of the present invention is further provided with an aperture to increase image quality.
In the optical image capturing system of the present invention, the aperture could be a front aperture or a middle aperture, wherein the front aperture is provided between the object and the first lens, and the middle aperture is provided between the first lens and the image plane. The front aperture provides a relatively long distance between an exit pupil of the optical image capturing system and the image plane, which allows more optical elements to be installed and increases the image receiving efficiency of the image sensor. The middle aperture could enlarge the view angle of the optical image capturing system, which provides the advantage of a wide-angle lens. The optical image capturing system satisfies 0.1≤InS/HOS≤1.1, where InS is a distance on the optical axis between the aperture and an image plane of the at least one lens group. It is helpful for size reduction and wide angle.
The optical image capturing system of the present invention satisfies 0.1≤ΣTP/InTL≤0.9, where InTL is a distance in parallel with the optical axis from the object-side surface of the first lens to an image-side surface of the sixth lens, and ΣTP is a sum of central thicknesses of the lenses having refractive power on the optical axis. It is helpful for the contrast of image and yield rate of lens manufacturing, and also provides a suitable back focal length for installation of other elements.
The optical image capturing system of the present invention satisfies 0.001≤|R1/R2|≤25, and preferably satisfies 0.01≤|R1/R2|≤12, where R1 is a radius of curvature of the object-side surface of the first lens, and R2 is a radius of curvature of the image-side surface of the first lens. It provides the first lens with a suitable positive refractive power to reduce the increase rate of the spherical aberration.
The optical image capturing system of the present invention satisfies −7<(R11−R12)/(R11+R12)<50, where R11 is a radius of curvature of the object-side surface of the sixth lens, and R12 is a radius of curvature of the image-side surface of the sixth lens. It may modify the astigmatic field curvature.
The optical image capturing system of the present invention satisfies IN12/f≤60, where IN12 is a distance on the optical axis between the first lens and the second lens. It may correct chromatic aberration and improve the performance.
The optical image capturing system of the present invention satisfies IN56/f≤3.0, where IN56 is a distance on the optical axis between the fifth lens and the sixth lens. It may correct chromatic aberration and improve the performance.
The optical image capturing system of the present invention satisfies 0.1≤(TP1+IN12)/TP2≤10, where TP1 is a central thickness of the first lens on the optical axis, and TP2 is a central thickness of the second lens on the optical axis. It may control the sensitivity of manufacture of the optical image capturing system and improve the performance.
The optical image capturing system of the present invention satisfies 0.1≤(TP6+IN56)/TP5≤15, where TP5 is a central thickness of the fifth lens on the optical axis, TP6 is a central thickness of the sixth lens on the optical axis, and IN56 is a distance between the fifth lens and the sixth lens. It may control the sensitivity of manufacture of the optical image capturing system and improve the performance.
The optical image capturing system of the present invention satisfies 0.1≤TP4/(IN34+TP4+IN45)<1, where TP2 is a central thickness of the second lens on the optical axis, TP3 is a central thickness of the third lens on the optical axis, TP4 is a central thickness of the fourth lens on the optical axis, IN34 is a distance on the optical axis between the third lens and the fourth lens, and IN45 is a distance on the optical axis between the fourth lens and the fifth lens. It may fine-tune and correct the aberration of the incident rays layer by layer, and reduce the overall height of the optical image capturing system.
The optical image capturing system satisfies 0 mm≤HVT61≤3 mm; 0 mm<HVT62≤6 mm; 0≤HVT61/HVT62; 0 mm≤|SGC61|≤0.5 mm; 0 mm<|SGC62|≤2 mm; and 0<|SGC62|/(|SGC62|+TP6)≤0.9, where HVT61 is a vertical distance from the critical point C61 on the object-side surface of the sixth lens to the optical axis; HVT62 is a vertical distance from the critical point C62 on the image-side surface of the sixth lens to the optical axis; SGC61 is a distance on the optical axis between a point on the object-side surface of the sixth lens where the optical axis passes through and a point where the critical point C61 projects on the optical axis; SGC62 is a distance on the optical axis between a point on the image-side surface of the sixth lens where the optical axis passes through and a point where the critical point C62 projects on the optical axis. It is helpful to correct the off-axis view field aberration.
The optical image capturing system satisfies 0.2≤HVT62/HOI≤0.9, and preferably satisfies 0.3≤HVT62/HOI≤0.8. It may help to correct the peripheral aberration.
The optical image capturing system satisfies 0≤HVT62/HOS≤0.5, and preferably satisfies 0.2≤HVT62/HOS≤0.45. It may help to correct the peripheral aberration.
The optical image capturing system of the present invention satisfies 0<SGI611/(SGI611+TP6)≤0.9; 0<SGI621/(SGI621+TP6)≤0.9, and preferably satisfies 0.1≤SGI611/(SGI611+TP6)≤0.6; 0.1≤SGI621/(SGI621+TP7)≤0.6, where SGI611 is a displacement on the optical axis from a point on the object-side surface of the sixth lens, through which the optical axis passes, to a point where the inflection point on the object-side surface of the sixth lens, which is the closest to the optical axis, projects on the optical axis, and SGI621 is a displacement on the optical axis from a point on the image-side surface of the sixth lens, through which the optical axis passes, to a point where the inflection point on the image-side surface of the sixth lens, which is the closest to the optical axis, projects on the optical axis.
The optical image capturing system of the present invention satisfies 0<SGI612/(SGI612+TP6)≤0.9; 0<SGI622/(SGI622+TP6)≤0.9, and it is preferable to satisfy 0.1≤SGI612/(SGI612+TP6)≤0.6; 0.1≤SGI622/(SGI622+TP6)≤0.6, where SGI612 is a displacement on the optical axis from a point on the object-side surface of the sixth lens, through which the optical axis passes, to a point where the inflection point on the object-side surface, which is the second closest to the optical axis, projects on the optical axis, and SGI622 is a displacement on the optical axis from a point on the image-side surface of the sixth lens, through which the optical axis passes, to a point where the inflection point on the object-side surface, which is the second closest to the optical axis, projects on the optical axis.
The optical image capturing system of the present invention satisfies 0.001 mm≤|HIF611|≤5 mm; 0.001 mm≤|HIF621|≤5 mm, and it is preferable to satisfy 0.1 mm≤|HIF611|≤3.5 mm; 1.5 mm≤|HIF621|≤3.5 mm, where HIF611 is a vertical distance from the inflection point closest to the optical axis on the object-side surface of the sixth lens to the optical axis; HIF621 is a vertical distance from the inflection point closest to the optical axis on the image-side surface of the sixth lens to the optical axis.
The optical image capturing system of the present invention satisfies 0.001 mm≤|HIF612|≤5 mm; 0.001 mm≤|HIF622|≤5 mm, and it is preferable to satisfy 0.1 mm≤|HIF622|≤3.5 mm; 0.1 mm≤|HIF612|≤3.5 mm, where HIF612 is a vertical distance from the inflection point second closest to the optical axis on the object-side surface of the sixth lens to the optical axis; HIF622 is a vertical distance from the inflection point second closest to the optical axis on the image-side surface of the sixth lens to the optical axis.
The optical image capturing system of the present invention satisfies 0.001 mm≤|HIF613|≤5 mm; 0.001 mm≤|HIF623|≤5 mm, and it is preferable to satisfy 0.1 mm≤|HIF623|≤3.5 mm; 0.1 mm≤|HIF613|≤3.5 mm, where HIF613 is a vertical distance from the inflection point third closest to the optical axis on the object-side surface of the sixth lens to the optical axis; HIF623 is a vertical distance from the inflection point third closest to the optical axis on the image-side surface of the sixth lens to the optical axis.
The optical image capturing system of the present invention satisfies 0.001 mm≤|HIF614|≤5 mm; 0.001 mm≤|HIF624|≤5 mm, and it is preferable to satisfy 0.1 mm≤|HIF624|≤3.5 mm; 0.1 mm≤|HIF614|≤3.5 mm, where HIF614 is a vertical distance from the inflection point fourth closest to the optical axis on the object-side surface of the sixth lens to the optical axis; HIF624 is a vertical distance from the inflection point fourth closest to the optical axis on the image-side surface of the sixth lens to the optical axis.
In an embodiment, the lenses of high Abbe number and the lenses of low Abbe number are arranged in an interlaced arrangement that could be helpful for correction of aberration of the optical image capturing system.
An equation of aspheric surface is
z=ch2/[1+[1(k+1)c2h2]0.5]+A4h4+A6h6+A8h8+A10h10+A12h12+A14h14+A16h16+A18h18+A20h20+ (1)
where z is a depression of the aspheric surface; k is conic constant; c is reciprocal of the radius of curvature; and A4, A6, A8, A10, A12, A14, A16, A18, and A20 are high-order aspheric coefficients.
In the optical image capturing system, the lenses could be made of plastic or glass. The plastic lenses may reduce the weight and lower the cost of the optical image capturing system, and the glass lenses may control the thermal effect and enlarge the space for arrangement of the refractive power of the optical image capturing system. In addition, the opposite surfaces (object-side surface and image-side surface) of the first to the seventh lenses could be aspheric that could obtain more control parameters to reduce aberration. The number of aspheric glass lenses could be less than the conventional spherical glass lenses, which is helpful for reduction of the height of the optical image capturing system.
Furthermore, in the optical image capturing system provided by the present invention, when the lens has a convex surface, it means that the surface of the lens around the optical axis is convex, and when the lens has a concave surface, it means that the surface of the lens around the optical axis is concave.
The optical image capturing system of the present invention could be applied in a dynamic focusing optical image capturing system. It is superior in the correction of aberration and high imaging quality so that it could be allied in lots of fields.
The optical image capturing system of the present invention could further include a driving module to meet different demands, wherein the driving module could be coupled with the lenses to move the lenses. The driving module could be a voice coil motor (VCM), which is used to move the lens for focusing, or could be an optical image stabilization (OIS) component, which is used to lower the possibility of having the problem of image blurring which is caused by subtle movements of the lens while shooting.
To meet different requirements, at least one lens among the first lens to the seventh lens of the optical image capturing system of the present invention could be a light filter, which filters out light of wavelength shorter than 500 nm. Such effect could be achieved by coating on at least one surface of the lens, or by using materials capable of filtering out short waves to make the lens.
To meet different requirements, the image plane of the optical image capturing system in the present invention could be either flat or curved. If the image plane is curved (e.g., a sphere with a radius of curvature), the incidence angle required for focusing light on the image plane could be decreased, which is not only helpful to shorten the length of the optical image capturing system (TTL), but also helpful to increase the relative illuminance.
We provide several optical embodiments in conjunction with the accompanying drawings for the best understanding. In practice, the optical embodiments of the present invention could be applied to other embodiments.
As shown in
The first lens 110 has negative refractive power and is made of plastic. An object-side surface 112 thereof, which faces the object side, is a concave aspheric surface, and an image-side surface 114 thereof, which faces the image side, is a concave aspheric surface. The object-side surface 112 has two inflection points. A profile curve length of the maximum effective radius of the object-side surface 112 of the first lens 110 is denoted by ARS11, and a profile curve length of the maximum effective radius of the image-side surface 114 of the first lens 110 is denoted by ARS12. A profile curve length of half the entrance pupil diameter (HEP) of the object-side surface 112 of the first lens 110 is denoted by ARE11, and a profile curve length of half the entrance pupil diameter (HEP) of the image-side surface 114 of the first lens 110 is denoted by ARE12. A thickness of the first lens 110 on the optical axis is denoted by TP1.
The first lens satisfies SGI111=−0.0031 mm; |SGI111|/(|SGI111|+TP1)=0.0016, where a displacement on the optical axis from a point on the object-side surface 112 of the first lens 110, through which the optical axis passes, to a point where the inflection point on the object-side surface 112, which is the closest to the optical axis, projects on the optical axis, is denoted by SGI111, and a displacement on the optical axis from a point on the image-side surface 114 of the first lens 110, through which the optical axis passes, to a point where the inflection point on the image-side surface 114, which is the closest to the optical axis, projects on the optical axis is denoted by SGI121.
The first lens 110 satisfies SGI112=1.3178 mm; |SGI112|/(|SGI112|+TP1)=0.4052, where a displacement on the optical axis from a point on the object-side surface 112 of the first lens 110, through which the optical axis passes, to a point where the inflection point on the object-side surface 112, which is the second closest to the optical axis, projects on the optical axis, is denoted by SGI112, and a displacement on the optical axis from a point on the image-side surface 114 of the first lens 110, through which the optical axis passes, to a point where the inflection point on the image-side surface 114, which is the second closest to the optical axis, projects on the optical axis is denoted by SGI122.
The first lens 110 satisfies HIF111=0.5557 mm; HIF111/HOI=0.1111, where a displacement perpendicular to the optical axis from a point on the object-side surface 112 of the first lens 110, through which the optical axis passes, to the inflection point, which is the closest to the optical axis is denoted by HIF111, and a displacement perpendicular to the optical axis from a point on the image-side surface 114 of the first lens 110, through which the optical axis passes, to the inflection point, which is the closest to the optical axis is denoted by HIF121.
The first lens 110 satisfies HIF112=5.3732 mm; HIF112/HOI=1.0746, where a displacement perpendicular to the optical axis from a point on the object-side surface 112 of the first lens 110, through which the optical axis passes, to the inflection point, which is the second closest to the optical axis is denoted by HIF112, and a displacement perpendicular to the optical axis from a point on the image-side surface 114 of the first lens 110, through which the optical axis passes, to the inflection point, which is the second closest to the optical axis is denoted by HIF122.
The second lens 120 has positive refractive power and is made of plastic. An object-side surface 122 thereof, which faces the object side, is a convex aspheric surface, and an image-side surface 124 thereof, which faces the image side, is a convex aspheric surface. The object-side surface 122 has an inflection point. A profile curve length of the maximum effective radius of the object-side surface 122 of the second lens 120 is denoted by ARS21, and a profile curve length of the maximum effective radius of the image-side surface 124 of the second lens 120 is denoted by ARS22. A profile curve length of half the entrance pupil diameter (HEP) of the object-side surface 122 of the second lens 120 is denoted by ARE21, and a profile curve length of half the entrance pupil diameter (HEP) of the image-side surface 124 of the second lens 120 is denoted by ARE22. A thickness of the second lens 120 on the optical axis is denoted by TP2.
The second lens 120 satisfies SGI211=0.1069 mm; |SGI211|/(|SGI211|+TP2)=0.0412; SGI221=0 mm; |SGI221|/(|SGI221|+TP2)=0, where a displacement on the optical axis from a point on the object-side surface 122 of the second lens 120, through which the optical axis passes, to a point where the inflection point on the object-side surface 122, which is the closest to the optical axis, projects on the optical axis, is denoted by SGI211, and a displacement on the optical axis from a point on the image-side surface 124 of the second lens 120, through which the optical axis passes, to a point where the inflection point on the image-side surface 124, which is the closest to the optical axis, projects on the optical axis is denoted by SGI221.
The second lens 120 satisfies HIF211=1.1264 mm; HIF211/HOI=0.2253; HIF221=0 mm; HIF221/HOI=0, where a displacement perpendicular to the optical axis from a point on the object-side surface 122 of the second lens 120, through which the optical axis passes, to the inflection point, which is the closest to the optical axis is denoted by HIF211, and a displacement perpendicular to the optical axis from a point on the image-side surface 124 of the second lens 120, through which the optical axis passes, to the inflection point, which is the closest to the optical axis is denoted by HIF221.
The third lens 130 has negative refractive power and is made of plastic. An object-side surface 132, which faces the object side, is a concave aspheric surface, and an image-side surface 134, which faces the image side, is a convex aspheric surface. The object-side surface 132 has an inflection point, and the image-side surface 134 has an inflection point. The object-side surface 122 has an inflection point. A profile curve length of the maximum effective radius of the object-side surface 132 of the third lens 130 is denoted by ARS31, and a profile curve length of the maximum effective radius of the image-side surface 134 of the third lens 130 is denoted by ARS32. A profile curve length of half the entrance pupil diameter (HEP) of the object-side surface 132 of the third lens 130 is denoted by ARE31, and a profile curve length of half the entrance pupil diameter (HEP) of the image-side surface 134 of the third lens 130 is denoted by ARE32. A thickness of the third lens 130 on the optical axis is denoted by TP3.
The third lens 130 satisfies SGI311=−0.3041 mm; |SGI311|/(|SGI311|+TP3)=0.4445; SGI321=−0.1172 mm; |SGI321|/(|SGI321|+TP3)=0.2357, where SGI311 is a displacement on the optical axis from a point on the object-side surface 132 of the third lens 130, through which the optical axis passes, to a point where the inflection point on the object-side surface 132, which is the closest to the optical axis, projects on the optical axis, and SGI321 is a displacement on the optical axis from a point on the image-side surface 134 of the third lens 130, through which the optical axis passes, to a point where the inflection point on the image-side surface 134, which is the closest to the optical axis, projects on the optical axis.
The third lens 130 satisfies HIF311=1.5907 mm; HIF311/HOI=0.3181; HIF321=1.3380 mm; HIF321/HOI=0.2676, where HIF311 is a distance perpendicular to the optical axis between the inflection point on the object-side surface 132 of the third lens 130, which is the closest to the optical axis, and the optical axis; HIF321 is a distance perpendicular to the optical axis between the inflection point on the image-side surface 134 of the third lens 130, which is the closest to the optical axis, and the optical axis.
The fourth lens 140 has positive refractive power and is made of plastic. An object-side surface 142, which faces the object side, is a convex aspheric surface, and an image-side surface 144, which faces the image side, is a concave aspheric surface. The object-side surface 142 has two inflection points, and the image-side surface 144 has an inflection point. A profile curve length of the maximum effective radius of the object-side surface 142 of the fourth lens 140 is denoted by ARS41, and a profile curve length of the maximum effective radius of the image-side surface 144 of the fourth lens 140 is denoted by ARS42. A profile curve length of half the entrance pupil diameter (HEP) of the object-side surface 142 of the fourth lens 140 is denoted by ARE41, and a profile curve length of half the entrance pupil diameter (HEP) of the image-side surface 144 of the fourth lens 140 is denoted by ARE42. A thickness of the fourth lens 140 on the optical axis is TP4.
The fourth lens 140 satisfies SGI411=0.0070 mm; |SGI411|/(|SGI411|+TP4)=0.0056; SGI421=0.0006 mm; |SGI421|/(|SGI421|+TP4)=0.0005, where SGI411 is a displacement on the optical axis from a point on the object-side surface 142 of the fourth lens 140, through which the optical axis passes, to a point where the inflection point on the object-side surface 142, which is the closest to the optical axis, projects on the optical axis, and SGI421 is a displacement on the optical axis from a point on the image-side surface 144 of the fourth lens 140, through which the optical axis passes, to a point where the inflection point on the image-side surface 144, which is the closest to the optical axis, projects on the optical axis.
The fourth lens 140 satisfies SGI412=−0.2078 mm; |SGI412|/(|SGI412|+TP4)=0.1439, where SGI412 is a displacement on the optical axis from a point on the object-side surface 142 of the fourth lens 140, through which the optical axis passes, to a point where the inflection point on the object-side surface 142, which is the second closest to the optical axis, projects on the optical axis, and SGI422 is a displacement on the optical axis from a point on the image-side surface 144 of the fourth lens 140, through which the optical axis passes, to a point where the inflection point on the image-side surface 144, which is the second closest to the optical axis, projects on the optical axis.
The fourth lens 140 further satisfies HIF411=0.4706 mm; HIF411/HOI=0.0941; HIF421=0.1721 mm; HIF421/HOI=0.0344, where HIF411 is a distance perpendicular to the optical axis between the inflection point on the object-side surface 142 of the fourth lens 140, which is the closest to the optical axis, and the optical axis; HIF421 is a distance perpendicular to the optical axis between the inflection point on the image-side surface 144 of the fourth lens 140, which is the closest to the optical axis, and the optical axis.
The fourth lens 140 satisfies HIF412=2.0421 mm; HIF412/HOI=0.4084, where HIF412 is a distance perpendicular to the optical axis between the inflection point on the object-side surface 142 of the fourth lens 140, which is the second closest to the optical axis, and the optical axis; HIF422 is a distance perpendicular to the optical axis between the inflection point on the image-side surface 144 of the fourth lens 140, which is the second closest to the optical axis, and the optical axis.
The fifth lens 150 has positive refractive power and is made of plastic. An object-side surface 152, which faces the object side, is a convex aspheric surface, and an image-side surface 154, which faces the image side, is a convex aspheric surface. The object-side surface 152 has two inflection points, and the image-side surface 154 has an inflection point. A profile curve length of the maximum effective radius of the object-side surface 152 of the fifth lens 150 is denoted by ARS51, and a profile curve length of the maximum effective radius of the image-side surface 154 of the fifth lens 150 is denoted by ARS52. A profile curve length of half the entrance pupil diameter (HEP) of the object-side surface 152 of the fifth lens 150 is denoted by ARE51, and a profile curve length of half the entrance pupil diameter (HEP) of the image-side surface 154 of the fifth lens 150 is denoted by ARE52. A thickness of the fifth lens 150 on the optical axis is denoted by TP5.
The fifth lens 150 satisfies SGI511=0.00364 mm; SGI521=−0.63365 mm; |SGI511|/(|SGI511|+TP5)=0.00338; |SGI521|/(|SGI521|+TP5)=0.37154, where SGI511 is a displacement on the optical axis from a point on the object-side surface 152 of the fifth lens 150, through which the optical axis passes, to a point where the inflection point on the object-side surface 152, which is the closest to the optical axis, projects on the optical axis, and SGI521 is a displacement on the optical axis from a point on the image-side surface 154 of the fifth lens 150, through which the optical axis passes, to a point where the inflection point on the image-side surface 154, which is the closest to the optical axis, projects on the optical axis.
The fifth lens 150 satisfies SGI512=−0.32032 mm; |SGI512|/(|SGI512|+TP5)=0.23009, where SGI512 is a displacement on the optical axis from a point on the object-side surface 152 of the fifth lens 150, through which the optical axis passes, to a point where the inflection point on the object-side surface 152, which is the second closest to the optical axis, projects on the optical axis, and SGI522 is a displacement on the optical axis from a point on the image-side surface 154 of the fifth lens 150, through which the optical axis passes, to a point where the inflection point on the image-side surface 154, which is the second closest to the optical axis, projects on the optical axis.
The fifth lens 150 satisfies SGI513=0 mm; SGI523=0 mm; |SGI513|/(|SGI513|+TP5)=0; |SGI523|/(|SGI523|+TP5)=0, where SGI513 is a displacement on the optical axis from a point on the object-side surface 152 of the fifth lens 150, through which the optical axis passes, to a point where the inflection point on the object-side surface 152, which is the third closest to the optical axis, projects on the optical axis, and SGI523 is a displacement on the optical axis from a point on the image-side surface 154 of the fifth lens 150, through which the optical axis passes, to a point where the inflection point on the image-side surface 154, which is the third closest to the optical axis, projects on the optical axis.
The fifth lens 150 satisfies SGI514=0 mm; SGI524=0 mm; |SGI514|/(|SGI514|+TP5)=0; |SGI524|/(|SGI524|+TP5)=0, where SGI514 is a displacement on the optical axis from a point on the object-side surface 152 of the fifth lens 150, through which the optical axis passes, to a point where the inflection point on the object-side surface 152, which is the fourth closest to the optical axis, projects on the optical axis, and SGI524 is a displacement on the optical axis from a point on the image-side surface 154 of the fifth lens 150, through which the optical axis passes, to a point where the inflection point on the image-side surface 154, which is the fourth closest to the optical axis, projects on the optical axis.
The fifth lens 150 further satisfies HIF511=0.28212 mm; HIF521=2.13850 mm; HIF511/HOI=0.05642; HIF521/HOI=0.42770, where HIF511 is a distance perpendicular to the optical axis between the inflection point on the object-side surface 152 of the fifth lens 150, which is the closest to the optical axis, and the optical axis; HIF521 is a distance perpendicular to the optical axis between the inflection point on the image-side surface 154 of the fifth lens 150, which is the closest to the optical axis, and the optical axis.
The fifth lens 150 further satisfies HIF512=2.51384 mm; HIF512/HOI=0.50277, where HIF512 is a distance perpendicular to the optical axis between the inflection point on the object-side surface 152 of the fifth lens 150, which is the second closest to the optical axis, and the optical axis; HIF522 is a distance perpendicular to the optical axis between the inflection point on the image-side surface 154 of the fifth lens 150, which is the second closest to the optical axis, and the optical axis.
The fifth lens 150 further satisfies HIF513=0 mm; HIF513/HOI=0; HIF523=0 mm; HIF523/HOI=0, where HIF513 is a distance perpendicular to the optical axis between the inflection point on the object-side surface 152 of the fifth lens 150, which is the third closest to the optical axis, and the optical axis; HIF523 is a distance perpendicular to the optical axis between the inflection point on the image-side surface 154 of the fifth lens 150, which is the third closest to the optical axis, and the optical axis.
The fifth lens 150 further satisfies HIF514=0 mm; HIF514/HOI=0; HIF524=0 mm; HIF524/HOI=0, where HIF514 is a distance perpendicular to the optical axis between the inflection point on the object-side surface 152 of the fifth lens 150, which is the fourth closest to the optical axis, and the optical axis; HIF524 is a distance perpendicular to the optical axis between the inflection point on the image-side surface 154 of the fifth lens 150, which is the fourth closest to the optical axis, and the optical axis.
The sixth lens 160 has negative refractive power and is made of plastic. An object-side surface 162, which faces the object side, is a concave surface, and an image-side surface 164, which faces the image side, is a concave surface. The object-side surface 162 has two inflection points, and the image-side surface 164 has an inflection point. Whereby, the incident angle of each view field entering the sixth lens 160 could be effectively adjusted to improve aberration. A profile curve length of the maximum effective radius of the object-side surface 162 of the sixth lens 160 is denoted by ARS61, and a profile curve length of the maximum effective radius of the image-side surface 164 of the sixth lens 160 is denoted by ARS62. A profile curve length of half the entrance pupil diameter (HEP) of the object-side surface 162 of the sixth lens 160 is denoted by ARE61, and a profile curve length of half the entrance pupil diameter (HEP) of the image-side surface 164 of the sixth lens 160 is denoted by ARE62. A thickness of the sixth lens 160 on the optical axis is denoted by TP6.
The sixth lens 160 satisfies SGI611=−0.38558 mm; SGI621=0.12386 mm; |SGI611|/(|SGI611|+TP6)=0.27212; |SGI621|/(|SGI621|+TP6)=0.10722, where SGI611 is a displacement on the optical axis from a point on the object-side surface 162 of the sixth lens 160, through which the optical axis passes, to a point where the inflection point on the object-side surface 162, which is the closest to the optical axis, projects on the optical axis, and SGI621 is a displacement on the optical axis from a point on the image-side surface 164 of the sixth lens 160, through which the optical axis passes, to a point where the inflection point on the image-side surface 164, which is the closest to the optical axis, projects on the optical axis.
The sixth lens 160 satisfies SGI612=−0.47400 mm; |SGI612|/(|SGI612|+TP6)=0.31488; SGI622=0 mm; |SGI622|/(|SGI622|+TP6)=0, where SGI612 is a displacement on the optical axis from a point on the object-side surface 162 of the sixth lens 160, through which the optical axis passes, to a point where the inflection point on the object-side surface 162, which is the second closest to the optical axis, projects on the optical axis, and SGI622 is a displacement on the optical axis from a point on the image-side surface 164 of the sixth lens 160, through which the optical axis passes, to a point where the inflection point on the image-side surface 164, which is the second closest to the optical axis, projects on the optical axis.
The sixth lens 160 further satisfies HIF611=2.24283 mm; HIF621=1.07376 mm; HIF611/HOI=0.44857; HIF621/HOI=0.21475, where HIF611 is a distance perpendicular to the optical axis between the inflection point on the object-side surface 162 of the sixth lens 160, which is the closest to the optical axis, and the optical axis; HIF621 is a distance perpendicular to the optical axis between the inflection point on the image-side surface 164 of the sixth lens 160, which is the closest to the optical axis, and the optical axis.
The sixth lens 160 further satisfies HIF612=2.48895 mm; HIF612/HOI=0.49779, where HIF612 is a distance perpendicular to the optical axis between the inflection point on the object-side surface 162 of the sixth lens 160, which is the second closest to the optical axis, and the optical axis; HIF622 is a distance perpendicular to the optical axis between the inflection point on the image-side surface 164 of the sixth lens 160, which is the second closest to the optical axis, and the optical axis.
The sixth lens 160 further satisfies HIF613=0 mm; HIF613/HOI=0; HIF623=0 mm; HIF623/HOI=0, where HIF613 is a distance perpendicular to the optical axis between the inflection point on the object-side surface 162 of the sixth lens 160, which is the third closest to the optical axis, and the optical axis; HIF623 is a distance perpendicular to the optical axis between the inflection point on the image-side surface 164 of the sixth lens 160, which is the third closest to the optical axis, and the optical axis.
The sixth lens 160 further satisfies HIF614=0 mm; HIF614/HOI=0; HIF624=0 mm; HIF624/HOI=0, where HIF614 is a distance perpendicular to the optical axis between the inflection point on the object-side surface 162 of the sixth lens 160, which is the fourth closest to the optical axis, and the optical axis; HIF624 is a distance perpendicular to the optical axis between the inflection point on the image-side surface 164 of the sixth lens 160, which is the fourth closest to the optical axis, and the optical axis.
The infrared rays filter 180 is made of glass and is disposed between the sixth lens 160 and the image plane 190. The infrared rays filter 180 gives no contribution to the focal length of the optical image capturing system 10.
The optical image capturing system 10 of the first optical embodiment has the following parameters, which are f=4.075 mm; f/HEP=1.4; HAF=50.001 degrees; and tan(HAF)=1.1918, where f is a focal length of the lens group; HAF is half the maximum field angle; and HEP is an entrance pupil diameter.
The parameters of the lenses of the first optical embodiment are f1=−7.828 mm; |f/f1|=0.52060; f6=−4.886; and |f1|>f6, where f1 is a focal length of the first lens 110; and f6 is a focal length of the sixth lens 160.
The first optical embodiment further satisfies |f2|+|f3|+|f4|+|f5|=95.50815; |f1|+|f6|=12.71352 and |f2|+|f3|+|f4|+|f5|>|f1|+|f6|, where f2 is a focal length of the second lens 120, f3 is a focal length of the third lens 130, f4 is a focal length of the fourth lens 140, f5 is a focal length of the fifth lens 150.
The optical image capturing system 10 of the first optical embodiment further satisfies ΣPPR=f/f2+f/f4+f/f5=1.63290; ΣNPR=|f/f1|+|f/f3|+|f/f6|=1.51305; ΣPPR/|ΣNPR|=1.07921; |f/f2|=0.69101; |f/f3|=0.15834; |f/f4|=0.06883; |f/f5|=0.87305; and |f/f6|=0.83412, where PPR is a ratio of a focal length f of the optical image capturing system to a focal length fp of each of the lenses with positive refractive power; and NPR is a ratio of a focal length f of the optical image capturing system to a focal length fn of each of lenses with negative refractive power.
The optical image capturing system 10 of the first optical embodiment further satisfies InTL+BFL=HOS; HOS=19.54120 mm; HOI=5.0 mm; HOS/HOI=3.90824; HOS/f=4.7952; InS=11.685 mm; InTL/HOS=0.9171; and InS/HOS=0.59794, where InTL is an optical axis distance between the object-side surface 112 of the first lens 110 and the image-side surface 164 of the sixth lens 160; HOS is a height of the image capturing system, i.e. an optical axis distance between the object-side surface 112 of the first lens 110 and the image plane 190; InS is an optical axis distance between the aperture 100 and the image plane 190; HOI is half a diagonal of an effective sensing area of the image sensor 192, i.e., the maximum image height; and BFL is a distance between the image-side surface 164 of the sixth lens 160 and the image plane 190.
The optical image capturing system 10 of the first optical embodiment further satisfies ΣTP=8.13899 mm; and ΣTP/InTL=0.52477, where ΣTP is a sum of the thicknesses of the lenses 110-160 with refractive power. It is helpful for the contrast of image and yield rate of manufacture and provides a suitable back focal length for installation of other elements.
The optical image capturing system 10 of the first optical embodiment further satisfies |R1/R2|=8.99987, where R1 is a radius of curvature of the object-side surface 112 of the first lens 110, and R2 is a radius of curvature of the image-side surface 114 of the first lens 110. It provides the first lens 110 with a suitable positive refractive power to reduce the increase rate of the spherical aberration.
The optical image capturing system 10 of the first optical embodiment further satisfies (R11−R12)/(R11+R12)=1.27780, where R11 is a radius of curvature of the object-side surface 162 of the sixth lens 160, and R12 is a radius of curvature of the image-side surface 164 of the sixth lens 160. It may modify the astigmatic field curvature.
The optical image capturing system 10 of the first optical embodiment further satisfies ΣPP=f2+f4+f5=69.770 mm; and f5/(f2+f4+f5)=0.067, where ΣPP is a sum of the focal lengths fp of each lens with positive refractive power. It is helpful to share the positive refractive power of a single lens to other positive lenses to avoid the significant aberration caused by the incident rays.
The optical image capturing system 10 of the first optical embodiment further satisfies ΣNP=f1+f3+f6=−38.451 mm; and f6/(f1+f3+f6)=0.127, where ΣNP is a sum of the focal lengths fn of each lens with negative refractive power. It is helpful to share the negative refractive power of the sixth lens 160 to the other negative lens, which avoids the significant aberration caused by the incident rays.
The optical image capturing system 10 of the first optical embodiment further satisfies IN12=6.418 mm; IN12/f=1.57491, where IN12 is a distance on the optical axis between the first lens 110 and the second lens 120. It may correct chromatic aberration and improve the performance.
The optical image capturing system 10 of the first optical embodiment further satisfies IN56=0.025 mm; IN56/f=0.00613, where IN56 is a distance on the optical axis between the fifth lens 150 and the sixth lens 160. It may correct chromatic aberration and improve the performance.
The optical image capturing system 10 of the first optical embodiment further satisfies TP1=1.934 mm; TP2=2.486 mm; and (TP1+IN12)/TP2=3.36005, where TP1 is a central thickness of the first lens 110 on the optical axis, and TP2 is a central thickness of the second lens 120 on the optical axis. It may control the sensitivity of manufacture of the optical image capturing system and improve the performance.
The optical image capturing system 10 of the first optical embodiment further satisfies TP5=1.072 mm; TP6=1.031 mm; and (TP6+IN56)/TP5=0.98555, where TP5 is a central thickness of the fifth lens 150 on the optical axis, TP6 is a central thickness of the sixth lens 160 on the optical axis, and IN56 is a distance on the optical axis between the fifth lens 150 and the sixth lens 160. It may control the sensitivity of manufacture of the optical image capturing system and lower the total height of the optical image capturing system.
The optical image capturing system 10 of the first optical embodiment further satisfies IN34=0.401 mm; IN45=0.025 mm; and TP4/(IN34+TP4+IN45)=0.74376, where TP4 is a central thickness of the fourth lens 140 on the optical axis; IN34 is a distance on the optical axis between the third lens 130 and the fourth lens 140; IN45 is a distance on the optical axis between the fourth lens 140 and the fifth lens 150. It may help to slightly correct the aberration caused by the incident rays and lower the total height of the optical image capturing system.
The optical image capturing system 10 of the first optical embodiment further satisfies InRS51=−0.34789 mm; InRS52=−0.88185 mm; |InRS51|/TP5=0.32458; and |InRS52|/TP5=0.82276, where InRS51 is a displacement from a point on the object-side surface 152 of the fifth lens 150 passed through by the optical axis to a point on the optical axis where a projection of the maximum effective semi diameter of the object-side surface 152 of the fifth lens 150 ends; InRS52 is a displacement from a point on the image-side surface 154 of the fifth lens 150 passed through by the optical axis to a point on the optical axis where a projection of the maximum effective semi diameter of the image-side surface 154 of the fifth lens 150 ends; and TP5 is a central thickness of the fifth lens 150 on the optical axis. It is helpful for manufacturing and shaping of the lenses and is helpful to reduce the size.
The optical image capturing system 10 of the first optical embodiment further satisfies HVT51=0.515349 mm; and HVT52=0 mm, where HVT51 is a distance perpendicular to the optical axis between the critical point on the object-side surface 152 of the fifth lens 150 and the optical axis; and HVT52 is a distance perpendicular to the optical axis between the critical point on the image-side surface 154 of the fifth lens 150 and the optical axis.
The optical image capturing system 10 of the first optical embodiment further satisfies InRS61=−0.58390 mm; InRS62=0.41976 mm; |InRS61|/TP6=0.56616; and |InRS62|/TP6=0.40700, where InRS61 is a displacement from a point on the object-side surface 162 of the sixth lens 160 passed through by the optical axis to a point on the optical axis where a projection of the maximum effective semi diameter of the object-side surface 162 of the sixth lens 160 ends; InRS62 is a displacement from a point on the image-side surface 164 of the sixth lens 160 passed through by the optical axis to a point on the optical axis where a projection of the maximum effective semi diameter of the image-side surface 164 of the sixth lens 160 ends; and TP6 is a central thickness of the sixth lens 160 on the optical axis. It is helpful for manufacturing and shaping of the lenses and is helpful to reduce the size.
The optical image capturing system 10 of the first optical embodiment satisfies HVT61=0 mm; and HVT62=0 mm, where HVT61 is a distance perpendicular to the optical axis between the critical point on the object-side surface 162 of the sixth lens 160 and the optical axis; and HVT62 is a distance perpendicular to the optical axis between the critical point on the image-side surface 164 of the sixth lens 160 and the optical axis.
The optical image capturing system 10 of the first optical embodiment satisfies HVT51/HOI=0.1031. It is helpful for correction of the aberration of the peripheral view field of the optical image capturing system.
The optical image capturing system 10 of the first optical embodiment satisfies HVT51/HOS=0.02634. It is helpful for correction of the aberration of the peripheral view field of the optical image capturing system.
The second lens 120, the third lens 130, and the sixth lens 160 have negative refractive power. The optical image capturing system 10 of the first optical embodiment further satisfies NA6/NA2≤1, where NA2 is an Abbe number of the second lens 120; NA3 is an Abbe number of the third lens 130; NA6 is an Abbe number of the sixth lens 160. It may correct the aberration of the optical image capturing system.
The optical image capturing system 10 of the first optical embodiment further satisfies |TDT|=2.124%; |ODT|=5.076%, where TDT is TV distortion; and ODT is optical distortion.
The parameters of the lenses of the first optical embodiment are listed in Table 1 and Table 2.
The figures related to the profile curve lengths obtained based on Table 1 and Table 2 are listed in the following table:
The detailed data of
As shown in
The first lens 210 has negative refractive power and is made of glass. An object-side surface 212 thereof, which faces the object side, is a convex spherical surface, and an image-side surface 214 thereof, which faces the image side, is a concave spherical surface.
The second lens 220 has negative refractive power and is made of glass. An object-side surface 222 thereof, which faces the object side, is a concave spherical surface, and an image-side surface 224 thereof, which faces the image side, is a convex spherical surface.
The third lens 230 has positive refractive power and is made of glass. An object-side surface 232, which faces the object side, is a convex spherical surface, and an image-side surface 234, which faces the image side, is a convex spherical surface.
The fourth lens 240 has positive refractive power and is made of glass. An object-side surface 242, which faces the object side, is a convex spherical surface, and an image-side surface 244, which faces the image side, is a convex spherical surface.
The fifth lens 250 has positive refractive power and is made of glass. An object-side surface 252, which faces the object side, is a convex spherical surface, and an image-side surface 254, which faces the image side, is a convex spherical surface.
The sixth lens 260 has negative refractive power and is made of glass. An object-side surface 262, which faces the object side, is a concave aspherical surface, and an image-side surface 264, which faces the image side, is a concave aspherical surface. Whereby, the incident angle of each view field entering the sixth lens 260 could be effectively adjusted to improve aberration.
The seventh lens 270 has negative refractive power and is made of glass. An object-side surface 272, which faces the object side, is a convex surface, and an image-side surface 274, which faces the image side, is a convex surface. It may help to shorten the back focal length to keep small in size, and may reduce an incident angle of the light of an off-axis field of view and correct the aberration of the off-axis field of view.
The infrared rays filter 280 is made of glass and is disposed between the seventh lens 270 and the image plane 290. The infrared rays filter 280 gives no contribution to the focal length of the optical image capturing system 20.
The parameters of the lenses of the second optical embodiment are listed in Table 3 and Table 4.
An equation of the aspheric surfaces of the second optical embodiment is the same as that of the first optical embodiment, and the definitions are the same as well.
The exact parameters of the second optical embodiment based on Table 3 and Table 4 are listed in the following table:
The figures related to the profile curve lengths obtained based on Table 3 and Table 4 are listed in the following table:
The results of the equations of the second optical embodiment based on Table 3 and Table 4 are listed in the following table:
As shown in
The first lens 310 has negative refractive power and is made of glass. An object-side surface 312 thereof, which faces the object side, is a convex spherical surface, and an image-side surface 314 thereof, which faces the image side, is a concave spherical surface.
The second lens 320 has negative refractive power and is made of glass. An object-side surface 322 thereof, which faces the object side, is a concave spherical surface, and an image-side surface 324 thereof, which faces the image side, is a convex spherical surface.
The third lens 330 has positive refractive power and is made of plastic. An object-side surface 332 thereof, which faces the object side, is a convex aspheric surface, and an image-side surface 334 thereof, which faces the image side, is a convex aspheric surface. The image-side surface 334 has an inflection point.
The fourth lens 340 has negative refractive power and is made of plastic. An object-side surface 342, which faces the object side, is a concave aspheric surface, and an image-side surface 344, which faces the image side, is a concave aspheric surface. The image-side surface 344 has an inflection point.
The fifth lens 350 has positive refractive power and is made of plastic. An object-side surface 352, which faces the object side, is a convex aspheric surface, and an image-side surface 354, which faces the image side, is a convex aspheric surface.
The sixth lens 360 has negative refractive power and is made of plastic. An object-side surface 362, which faces the object side, is a convex aspheric surface, and an image-side surface 364, which faces the image side, is a concave aspheric surface. The object-side surface 362 has an inflection point, and the image-side surface 364 has an inflection point. It may help to shorten the back focal length to keep small in size. Whereby, the incident angle of each view field entering the sixth lens 360 could be effectively adjusted to improve aberration.
The infrared rays filter 380 is made of glass and is disposed between the sixth lens 360 and the image plane 390. The infrared rays filter 390 gives no contribution to the focal length of the optical image capturing system 30.
The parameters of the lenses of the third optical embodiment 30 are listed in Table 5 and Table 6.
An equation of the aspheric surfaces of the third optical embodiment is the same as that of the first optical embodiment, and the definitions are the same as well.
The exact parameters of the third optical embodiment based on Table 5 and Table 6 are listed in the following table:
The figures related to the profile curve lengths obtained based on Table 5 and Table 6 are listed in the following table:
The results of the equations of the third optical embodiment based on Table 5 and Table 6 are listed in the following table:
As shown in
The first lens 410 has negative refractive power and is made of glass. An object-side surface 412 thereof, which faces the object side, is a convex spherical surface, and an image-side surface 414 thereof, which faces the image side, is a concave spherical surface.
The second lens 420 has negative refractive power and is made of plastic. An object-side surface 422 thereof, which faces the object side, is a concave aspheric surface, and an image-side surface 424 thereof, which faces the image side, is a concave aspheric surface. The object-side surface 422 has an inflection point.
The third lens 430 has positive refractive power and is made of plastic. An object-side surface 432 thereof, which faces the object side, is a convex aspheric surface, and an image-side surface 434 thereof, which faces the image side, is a convex aspheric surface. The object-side surface 432 has an inflection point.
The fourth lens 440 has positive refractive power and is made of plastic. An object-side surface 442, which faces the object side, is a convex aspheric surface, and an image-side surface 444, which faces the image side, is a convex aspheric surface. The object-side surface 442 has an inflection point.
The fifth lens 450 has negative refractive power and is made of plastic. An object-side surface 452, which faces the object side, is a concave aspheric surface, and an image-side surface 454, which faces the image side, is a concave aspheric surface. The object-side surface 452 has two inflection points. It may help to shorten the back focal length to keep small in size.
The infrared rays filter 480 is made of glass and is disposed between the fifth lens 450 and the image plane 490. The infrared rays filter 480 gives no contribution to the focal length of the optical image capturing system 40.
The parameters of the lenses of the fourth optical embodiment are listed in Table 7 and Table 8.
An equation of the aspheric surfaces of the fourth optical embodiment is the same as that of the first optical embodiment, and the definitions are the same as well.
The exact parameters of the fourth optical embodiment based on Table 7 and Table 8 are listed in the following table:
The figures related to the profile curve lengths obtained based on Table 7 and Table 8 are listed in the following table:
The results of the equations of the fourth optical embodiment based on Table 7 and Table 8 are listed in the following table:
As shown in
The first lens 510 has positive refractive power and is made of plastic. An object-side surface 512, which faces the object side, is a convex aspheric surface, and an image-side surface 514, which faces the image side, is a convex aspheric surface. The object-side surface 512 has an inflection point.
The second lens 520 has negative refractive power and is made of plastic. An object-side surface 522 thereof, which faces the object side, is a convex aspheric surface, and an image-side surface 524 thereof, which faces the image side, is a concave aspheric surface. The object-side surface 522 has two inflection points, and the image-side surface 524 has an inflection point.
The third lens 530 has positive refractive power and is made of plastic. An object-side surface 532, which faces the object side, is a concave aspheric surface, and an image-side surface 534, which faces the image side, is a convex aspheric surface. The object-side surface 532 has three inflection points, and the image-side surface 534 has an inflection point.
The fourth lens 540 has negative refractive power and is made of plastic. An object-side surface 542, which faces the object side, is a concave aspheric surface, and an image-side surface 544, which faces the image side, is a concave aspheric surface. The object-side surface 542 has two inflection points, and the image-side surface 544 has an inflection point.
The infrared rays filter 570 is made of glass and is disposed between the fourth lens 540 and the image plane 580. The infrared rays filter 570 gives no contribution to the focal length of the optical image capturing system 50.
The parameters of the lenses of the fifth optical embodiment are listed in Table 9 and Table 10.
An equation of the aspheric surfaces of the fifth optical embodiment is the same as that of the first optical embodiment, and the definitions are the same as well.
The exact parameters of the fifth optical embodiment based on Table 9 and Table 10 are listed in the following table:
The results of the equations of the fifth optical embodiment based on Table 9 and Table 10 are listed in the following table:
The figures related to the profile curve lengths obtained based on Table 9 and Table 10 are listed in the following table:
As shown in
The first lens 610 has positive refractive power and is made of plastic. An object-side surface 612, which faces the object side, is a convex aspheric surface, and an image-side surface 614, which faces the image side, is a concave aspheric surface.
The second lens 620 has negative refractive power and is made of plastic. An object-side surface 622 thereof, which faces the object side, is a concave aspheric surface, and an image-side surface 624 thereof, which faces the image side, is a convex aspheric surface. The image-side surface 624 has an inflection point.
The third lens 630 has positive refractive power and is made of plastic. An object-side surface 632, which faces the object side, is a convex aspheric surface, and an image-side surface 634, which faces the image side, is a concave aspheric surface. The object-side surface 632 has two inflection points, and the image-side surface 634 has an inflection point.
The infrared rays filter 670 is made of glass and is disposed between the third lens 630 and the image plane 680. The infrared rays filter 670 gives no contribution to the focal length of the optical image capturing system 60.
The parameters of the lenses of the sixth optical embodiment are listed in Table 11 and Table 12.
An equation of the aspheric surfaces of the sixth optical embodiment is the same as that of the first optical embodiment, and the definitions are the same as well.
The exact parameters of the sixth optical embodiment based on Table 11 and Table 12 are listed in the following table:
The results of the equations of the sixth optical embodiment based on Table 11 and Table 12 are listed in the following table:
The figures related to the profile curve lengths obtained based on Table 11 and Table 12 are listed in the following table:
The optical image capturing system of the present invention could reduce the required mechanism space by changing the number of lens.
It must be pointed out that the embodiments described above are only some embodiments of the present invention. All equivalent structures which employ the concepts disclosed in this specification and the appended claims should fall within the scope of the present invention.
| Number | Date | Country | Kind |
|---|---|---|---|
| 108115014 | Apr 2019 | TW | national |
| Number | Name | Date | Kind |
|---|---|---|---|
| 20040096082 | Nakai | May 2004 | A1 |
| 20150302747 | Ro | Oct 2015 | A1 |
| 20150343951 | Kim | Dec 2015 | A1 |
| 20150379869 | Ferguson | Dec 2015 | A1 |
| 20160350605 | Yoshitomi et al. | Dec 2016 | A1 |
| 20180050641 | Lin et al. | Feb 2018 | A1 |
| Number | Date | Country |
|---|---|---|
| 101508299 | Aug 2009 | CN |
| 101535087 | Sep 2009 | CN |
| 104786933 | Jul 2015 | CN |
| 205469262 | Aug 2016 | CN |
| 206178233 | May 2017 | CN |
| 107066965 | Aug 2017 | CN |
| 107077792 | Aug 2017 | CN |
| 107878326 | Apr 2018 | CN |
| 108196535 | Jun 2018 | CN |
| 109074078 | Dec 2018 | CN |
| 109254375 | Jan 2019 | CN |
| I585723 | Jun 2017 | TW |
| M558927 | Apr 2018 | TW |
| M562412 | Jun 2018 | TW |
| 201901225 | Jan 2019 | TW |
| M583396 | Sep 2019 | TW |
| 2018158642 | Sep 2018 | WO |
| Entry |
|---|
| Search report for TW108115014, Total of 1 page, dated Jul. 15, 2021. |
| English abstract for CN101508299, Total of 1 page. |
| English abstract for CN101535087, Total of 1 page. |
| English abstract for CN104786933, Total of 1 page. |
| English abstract for CN107066965, Total of 1 page. |
| English abstract for CN107077792, Total of 1 page. |
| English abstract for CN107878326, Total of 1 page. |
| English abstract for CN108196535, Total of 1 page. |
| English abstract for CN109074078, Total of 1 page. |
| English abstract for CN109254375, Total of 1 page. |
| English abstract for CN205469262, Total of 1 page. |
| English abstract for CN206178233, Total of 1 page. |
| English abstract for TWI585723, Total of 1 page. |
| English abstract for TWM558927, Total of 1 page. |
| English abstract for TWM562412, Total of 1 page. |
| English abstract for TWM583396, Total of 1 page. |
| English abstract for TW201901225, Total of 1 page. |
| Number | Date | Country | |
|---|---|---|---|
| 20200346640 A1 | Nov 2020 | US |
