Imaging lens group and camera module

Abstract

The invention discloses an imaging lens group and a camera module, and the imaging lens group comprises a diaphragm, and sequentially comprises a first lens, a second lens, a third lens, a fourth lens and a fifth lens from an object side to an image side. A second lens element; a third lens element; a fourth lens element; a fifth lens element; and a sixth lens element. Wherein the angle of the maximum angle of view principal ray of the imaging lens group incident to the imaging surface is CRA, the maximum optical effective radius of the image side surface of the sixth lens is CA62, and the following conditions are satisfied: 9.27 lt; cRA / CA62lt, and CA62lt; 20.02, 20.02. By means of the proper configuration, the incident angle of the image sensor can be met, and the miniaturization of the imaging lens group can be achieved.

Description

Technical Field

[0001] The present invention relates to an imaging lens group, and particularly to an imaging lens group and a camera module applied to an electronic device. Background Art

[0002] Ultra-wide-angle lenses are widely used in various fields today, including photography, monitors, automation equipment, and vehicle surround view systems, etc. In the Internet of Things (IoT) devices that can be applied, there are also prior arts applying ultra-wide-angle lenses. However, the ultra-wide-angle lenses in these prior arts usually have some limitations.

[0003] Currently, the ultra-wide-angle lenses applied to Internet of Things (IoT) devices often have low resolution and relatively long lens height. These limitations affect their performance in high-quality image output. In addition, due to the long lens height, it occupies the limited space in the Internet of Things (IoT) devices and limits the flexibility in design. Therefore, how to achieve an ultra-wide-angle, high-resolution, and miniaturized optical lens to more flexibly adapt to various Internet of Things (IoT) devices is one of the important research directions of current optical lenses. Summary of the Invention

[0004] The object of the present invention is to solve the problems of the above prior arts. To achieve the above object, the present invention provides an imaging lens group, including a diaphragm, and sequentially including from the object side to the image side: a first lens with negative refractive power, the image side surface of the first lens is concave near the optical axis; a second lens with positive refractive power, the object side surface of the second lens is convex near the optical axis, and the image side surface of the second lens is convex near the optical axis; a third lens with negative refractive power, the image side surface of the third lens is concave near the optical axis; a fourth lens with positive refractive power, the object side surface of the fourth lens is convex near the optical axis, and the image side surface of the fourth lens is concave near the optical axis; a fifth lens with positive refractive power, the object side surface of the fifth lens is convex near the optical axis, and the image side surface of the fifth lens is convex near the optical axis; and a sixth lens with negative refractive power, the object side surface of the sixth lens is convex near the optical axis, and the image side surface of the sixth lens is concave near the optical axis.

[0005] Among them, the total number of lenses with refractive power in the imaging lens group is six. The angle of the main ray of the maximum viewing angle of the imaging lens group incident on the imaging surface is CRA, and the maximum optical effective radius of the image side surface of the sixth lens is CA62, and the following conditions are satisfied: 9.27 < CRA / CA62 < 20.02.

[0006] When the above imaging lens group satisfies 9.27 < CRA / CA62 < 20.02, through this more appropriate configuration, the incident angle of the image sensor can be satisfied and the miniaturization of the imaging lens group can be achieved.

[0007] The displacement parallel to the optical axis from the intersection point of the image-side surface of the first lens on the optical axis to the position of the maximum effective radius of the image-side surface of the first lens is TDP2, half of the maximum viewing angle of the imaging lens group is HFOV, and the f-number of the imaging lens group is Fno, and the following conditions are satisfied: 12.19 (mm * degree) < TDP2 * HFOV / Fno < 41.70 (mm * degree), thereby enabling the imaging lens group to have an ultra-wide angle and a large light incident amount, and enabling the best balance of the formability of the imaging lens group to facilitate manufacturing.

[0008] The overall focal length of the imaging lens group is f, and the radius of curvature of the image-side surface of the fifth lens is R10, and the following conditions are satisfied: -1.6 < f / R10 < -0.6, thereby enabling the best balance between the refractive power and the radius of curvature of the lenses of the imaging lens group to facilitate manufacturing.

[0009] The focal length of the third lens is f3, and the focal length of the fifth lens is f5, and the following conditions are satisfied: -4.01 < f3 / f5 < -1.09, thereby enabling a more appropriate configuration of the refractive power of the lenses of the imaging lens group, which is beneficial to correcting system aberrations to improve the imaging quality of the imaging lens group.

[0010] The distance from the object-side surface of the first lens to the imaging surface on the optical axis is TL, and the maximum imaging height of the imaging lens group is IMH, and the following conditions are satisfied: 1.95 < TL / IMH < 3.32, thereby enabling a more appropriate ratio of the lens height and the imaging size, and being beneficial to balancing the imaging quality and the size of the imaging lens group.

[0011] The focal length of the second lens is f2, the focal length of the fifth lens is f5, the thickness of the second lens on the optical axis is CT2, and the thickness of the fifth lens on the optical axis is CT5, and the following conditions are satisfied: -3.13 < (f2 / CT2) - (f5 / CT5) < 0.5, thereby enabling an appropriate distribution of the refractive power and the thickness of the lenses of the imaging lens group, and taking into account the performance and the formability of the imaging lens group.

[0012] The angle at which the chief ray of the maximum viewing angle of the imaging lens group is incident on the imaging surface is CRA, the distance from the object-side surface of the first lens to the imaging surface on the optical axis is TL, and the distance from the image-side surface of the sixth lens to the imaging surface on the optical axis is BFL, and the following conditions are satisfied: 3.35 (degrees / mm) < CRA / (TL - BFL) < 7.03 (degrees / mm), thereby providing an appropriate incident angle for the image sensor and a back focal space.

[0013] Half of the maximum viewing angle of the imaging lens group is HFOV, the maximum optical effective radius of the object-side surface of the first lens is CA11, the maximum imaging height of the imaging lens group is IMH, and the following conditions are satisfied: 31.70 (degrees) < HFOV * (CA11 / IMH) < 83.70 (degrees), thereby making the configuration of the imaging lens group more suitable, and further achieving a miniaturized imaging lens group and meeting the ultra-wide-angle effect.

[0014] The entrance pupil diameter of the imaging lens group is EPD, the maximum optical effective radius of the object-side surface of the first lens is CA11, the maximum optical effective radius of the image-side surface of the second lens is CA22, and the following conditions are satisfied: 1.12 (mm) < EPD * CA11 / CA22 < 3.12 (mm), thereby making the first lens and the second lens reach a better surface size ratio and contributing to meeting the requirement of a large aperture.

[0015] The maximum optical effective radius of the object-side surface of the first lens is CA11, the thickness of the first lens on the optical axis is CT1, and the displacement of the intersection of the image-side surface of the first lens on the optical axis to the position of the maximum effective radius of the image-side surface of the first lens parallel to the optical axis is TDP2, and the following conditions are satisfied: 3.49 (mm -1 ) < CA11 / (CT1 * TDP2) < 8.87 (mm -1 ), thereby enabling the first lens to have better formability for manufacturing.

[0016] The radius of curvature of the object-side surface of the sixth lens is R11, the maximum optical effective radius of the image-side surface of the sixth lens is CA62, the thickness of the sixth lens on the optical axis is CT6, and the following conditions are satisfied: 6.27 (mm) < R11 * CA62 / CT6 < 28.92 (mm), thereby enabling the sixth lens to have better formability for manufacturing.

[0017] The distance from the object-side surface of the first lens to the imaging surface on the optical axis is TL, and the distance from the position of the maximum optical effective radius of the image-side surface of the first lens to the stop on the optical axis is ET1S, and the following conditions are satisfied: 4.82 < TL / ET1S < 13.40, thereby making the spatial distribution of the first lens in the imaging lens group more appropriate and conducive to its assembly.

[0018] The overall focal length of the imaging lens group is f, the distance between the stop and the imaging surface on the optical axis is CTSI, the maximum imaging height of the imaging lens group is IMH, and the following conditions are satisfied: 1.82 (mm) < f * CTSI / IMH < 6.13 (mm), thereby achieving the best ratio of the overall focal length and spatial configuration of the imaging lens group, which is conducive to reducing the height of the imaging lens group.

[0019] The radius of curvature of the image-side surface of the second lens is R4, and the thickness of the second lens on the optical axis is CT2, satisfying the following condition: -3.79 < R4 / CT2 < -1.16. With this appropriate configuration of lens thickness and radius of curvature, it helps to reduce the sensitivity of the second lens, reduce assembly tolerances, and improve the quality of the imaging lens group.

[0020] The distance from the object-side surface of the first lens to the imaging surface on the optical axis is TL, and the overall focal length of the imaging lens group is f, satisfying the following condition: 2.21 < TL / f < 6.23. With this appropriate distribution of the overall focal length and lens height of the imaging lens group, it is beneficial to improve the imaging quality of the imaging lens group.

[0021] In addition, the present invention further provides an imaging module, comprising: a lens barrel; an imaging lens group disposed in the lens barrel; and an image sensor disposed on the imaging surface of the imaging lens group.

[0022] Among them, the imaging lens group includes a diaphragm and, in order from the object side to the image side, includes: a first lens having a negative refractive power, and the image-side surface of the first lens near the optical axis is concave; a second lens having a positive refractive power, and the object-side surface of the second lens near the optical axis is convex, and the image-side surface of the second lens near the optical axis is convex; a third lens having a negative refractive power, and the image-side surface of the third lens near the optical axis is concave; a fourth lens having a positive refractive power, and the object-side surface of the fourth lens near the optical axis is convex, and the image-side surface of the fourth lens near the optical axis is concave; a fifth lens having a positive refractive power, and the object-side surface of the fifth lens near the optical axis is convex, and the image-side surface of the fifth lens near the optical axis is convex; and a sixth lens having a negative refractive power, and the object-side surface of the sixth lens near the optical axis is convex, and the image-side surface of the sixth lens near the optical axis is concave.

[0023] Among them, the total number of lenses with refractive power in the imaging lens group is six. The angle at which the principal ray of the maximum viewing angle of the imaging lens group is incident on the imaging surface is CRA, and the maximum optical effective radius of the image-side surface of the sixth lens is CA62, satisfying the following condition: 9.27 < CRA / CA62 < 20.02.

[0024] When the above imaging lens group satisfies 9.27 < CRA / CA62 < 20.02, with this more appropriate configuration, it can meet the incident angle of the image sensor and achieve miniaturization of the imaging lens group.

[0025] The displacement amount parallel to the optical axis from the intersection point of the image-side surface of the first lens on the optical axis to the maximum effective radius position of the image-side surface of the first lens is TDP2, half of the maximum viewing angle of the imaging lens group is HFOV, the aperture value of the imaging lens group is Fno, and the following conditions are satisfied: 12.19 (mm * degree) < TDP2 * HFOV / Fno < 41.70 (mm * degree), thereby enabling the imaging lens group to have an ultra-wide angle and a large light input amount, and enabling the forming property of the imaging lens group to reach the best balance for manufacturing.

[0026] The overall focal length of the imaging lens group is f, and the radius of curvature of the image-side surface of the fifth lens is R10, and the following conditions are satisfied: -1.6 < f / R10 < -0.6, thereby enabling the refractive power and the radius of curvature of the lenses of the imaging lens group to reach the best balance for manufacturing.

[0027] The focal length of the third lens is f3, and the focal length of the fifth lens is f5, and the following conditions are satisfied: -4.01 < f3 / f5 < -1.09, thereby enabling the refractive power configuration of the lenses of the imaging lens group to be more appropriate, which is beneficial to correcting system aberrations to improve the imaging quality of the imaging lens group.

[0028] The distance from the object-side surface of the first lens to the imaging surface on the optical axis is TL, and the maximum imaging height of the imaging lens group is IMH, and the following conditions are satisfied: 1.95 < TL / IMH < 3.32, thereby enabling the lens height and the imaging size ratio to be more appropriate, and being beneficial to balancing the imaging quality and the size of the imaging lens group.

[0029] The focal length of the second lens is f2, the focal length of the fifth lens is f5, the thickness of the second lens on the optical axis is CT2, and the thickness of the fifth lens on the optical axis is CT5, and the following conditions are satisfied: -3.13 < (f2 / CT2) - (f5 / CT5) < 0.5, thereby enabling the appropriate distribution of the refractive power and the thickness of the lenses of the imaging lens group, and taking into account the performance and the forming property of the imaging lens group.

[0030] The angle at which the chief ray of the maximum viewing angle of the imaging lens group is incident on the imaging surface is CRA, the distance from the object-side surface of the first lens to the imaging surface on the optical axis is TL, and the distance from the image-side surface of the sixth lens to the imaging surface on the optical axis is BFL, and the following conditions are satisfied: 3.35 (degree / mm) < CRA / (TL - BFL) < 7.03 (degree / mm), thereby providing an appropriate incident angle for the image sensor and a back focal space.

[0031] Half of the maximum viewing angle of the imaging lens group is HFOV, the maximum optical effective radius of the object-side surface of the first lens is CA11, the maximum imaging height of the imaging lens group is IMH, and the following conditions are satisfied: 31.70 (degrees) < HFOV * (CA11 / IMH) < 83.70 (degrees), thereby making the configuration of the imaging lens group more suitable, and further achieving a miniaturized imaging lens group and meeting the ultra-wide-angle effect.

[0032] The entrance pupil diameter of the imaging lens group is EPD, the maximum optical effective radius of the object-side surface of the first lens is CA11, the maximum optical effective radius of the image-side surface of the second lens is CA22, and the following conditions are satisfied: 1.12 (mm) < EPD * CA11 / CA22 < 3.12 (mm), thereby making the first lens and the second lens achieve a better surface size ratio and contributing to meeting the requirement of a large aperture.

[0033] The maximum optical effective radius of the object-side surface of the first lens is CA11, the thickness of the first lens on the optical axis is CT1, and the displacement of the intersection of the image-side surface of the first lens on the optical axis to the position of the maximum effective radius of the image-side surface of the first lens parallel to the optical axis is TDP2, and the following conditions are satisfied: 3.49 (mm -1 ) < CA11 / (CT1 * TDP2) < 8.87 (mm -1 ), thereby enabling the first lens to have better formability for manufacturing.

[0034] The radius of curvature of the object-side surface of the sixth lens is R11, the maximum optical effective radius of the image-side surface of the sixth lens is CA62, and the thickness of the sixth lens on the optical axis is CT6, and the following conditions are satisfied: 6.27 (mm) < R11 * CA62 / CT6 < 28.92 (mm), thereby enabling the sixth lens to have better formability for manufacturing.

[0035] The distance from the object-side surface of the first lens to the imaging surface on the optical axis is TL, and the distance from the position of the maximum optical effective radius of the image-side surface of the first lens to the stop on the optical axis is ET1S, and the following conditions are satisfied: 4.82 < TL / ET1S < 13.40, thereby making the spatial distribution of the first lens in the imaging lens group more appropriate and facilitating its assembly.

[0036] The overall focal length of the imaging lens group is f, the distance between the stop and the imaging surface on the optical axis is CTSI, the maximum imaging height of the imaging lens group is IMH, and the following conditions are satisfied: 1.82 (mm) < f * CTSI / IMH < 6.13 (mm), thereby achieving the best ratio between the overall focal length and the spatial configuration of the imaging lens group, which is beneficial to reducing the height of the imaging lens group.

[0037] The radius of curvature of the image-side surface of the second lens is R4, and the thickness of the second lens on the optical axis is CT2, satisfying the following condition: -3.79 < R4 / CT2 < -1.16. With this appropriate configuration of the lens thickness and radius of curvature, it helps to reduce the sensitivity of the second lens, reduce the assembly tolerance, and improve the quality of the imaging lens group.

[0038] The distance from the object-side surface of the first lens to the imaging surface on the optical axis is TL, and the overall focal length of the imaging lens group is f, satisfying the following condition: 2.21 < TL / f < 6.23. With this appropriate distribution of the overall focal length of the imaging lens group and the lens height, it is beneficial to improve the imaging quality of the imaging lens group. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] Figure 1A It is a schematic diagram of the imaging lens group according to the first embodiment of the present invention.

[0040] Figure 1B From left to right, it is the field curvature and distortion curve graphs of the imaging lens group according to the first embodiment.

[0041] Figure 2A It is a schematic diagram of the imaging lens group according to the second embodiment of the present invention.

[0042] Figure 2B From left to right, it is the field curvature and distortion curve graphs of the imaging lens group according to the second embodiment.

[0043] Figure 3A It is a schematic diagram of the imaging lens group according to the third embodiment of the present invention.

[0044] Figure 3B From left to right, it is the field curvature and distortion curve graphs of the imaging lens group according to the third embodiment.

[0045] Figure 4A It is a schematic diagram of the imaging lens group according to the fourth embodiment of the present invention.

[0046] Figure 4B From left to right, it is the field curvature and distortion curve graphs of the imaging lens group according to the fourth embodiment.

[0047] Figure 5A It is a schematic diagram of the imaging lens group according to the fifth embodiment of the present invention.

[0048] Figure 5B From left to right, it is the field curvature and distortion curve graphs of the imaging lens group according to the fifth embodiment.

[0049] Fig. 6A It is a schematic diagram of the imaging lens group according to the sixth embodiment of the present invention.

[0050] Figure 6BFrom left to right are the field curvature and distortion curves of the imaging lens assembly of the sixth embodiment.

[0051] Figure 7 FIG. 4 is a schematic diagram of a camera module according to a seventh embodiment of the present invention.

[0052] Explanation of symbols in the accompanying drawings: 100, 200, 300, 400, 500, 600: Light bar; 110, 210, 310, 410, 510, 610: first lens; 111, 211, 311, 411, 511, 611: object side surface; 112, 212, 312, 412, 512, 612: image side surface; 120, 220, 320, 420, 520, 620: second lens; 121, 221, 321, 421, 521, 621: object side surface; 122, 222, 322, 422, 522, 622: image side surface; 130, 230, 330, 430, 530, 630: third lens; 131, 231, 331, 431, 531, 631: object side surface; 132, 232, 332, 432, 532, 632: image side surface; 140, 240, 340, 440, 540, 640: fourth lens; 141, 241, 341, 441, 541, 641: object side surface; 142, 242, 342, 442, 542, 642: image side surface; 150, 250, 350, 450, 550, 650: fifth lens; 151, 251, 351, 451, 551, 651: object side surface; 152, 252, 352, 452, 552, 652: image side surface; 160, 260, 360, 460, 560, 660: sixth lens; 161, 261, 361, 461, 561, 661: object side surface; 162, 262, 362, 462, 562, 662: image side surface; 170, 270, 370, 470, 570, 670: infrared filter; 180, 280, 380, 480, 580, 680: Imaging surface; 190, 290, 390, 490, 590, 690: Optical axis; 1000: Lens barrel; 2000: Image sensor; 3000: Imaging lens group; 4000: Camera module. DETAILED DESCRIPTION

[0053] In order to enable those with ordinary knowledge in the relevant technical field to understand the content of the present invention and to implement the content of the present invention, the following is an appropriate embodiment with illustrations for explanation. Equivalent replacements and modifications based on the content of the present invention are all included in the scope of rights of the present invention. In addition, it is stated that the illustrations attached to the present invention are not depicted according to actual dimensions. Although the present invention provides embodiments of specific parameters, it should be understood that the parameters do not need to be completely equal to the corresponding values. Within an acceptable error range, they are approximate to the corresponding parameters. The following implementation methods will further explain the technical content of the present invention in detail, but the disclosed content is not used to limit the scope of rights of the present invention.

[0054] <First Embodiment> Please refer to Figure 1A and Figure 1B ,in, Figure 1A is a schematic diagram of an imaging lens assembly according to a first embodiment of the present invention, Figure 1B From left to right are the field curvature and distortion curves of the imaging lens assembly of the first embodiment. Figure 1A It can be seen that the imaging lens group includes, from the object side to the image side, a first lens 110, a light barrier 100, a second lens 120, a third lens 130, a fourth lens 140, a fifth lens 150, a sixth lens 160, an infrared cutoff filter 170 and an imaging surface 180; wherein the imaging lens group has six lenses with refractive power.

[0055] The first lens 110 has negative refractive power and is made of plastic. Its object-side surface 111 is concave near the optical axis 190 , and its image-side surface 112 is concave near the optical axis 190 . Both the object-side surface 111 and the image-side surface 112 are aspherical.

[0056] The second lens 120 has positive refractive power and is made of plastic. Its object-side surface 121 is convex near the optical axis 190 , and its image-side surface 122 is convex near the optical axis 190 . Both the object-side surface 121 and the image-side surface 122 are aspherical.

[0057] The third lens 130 has negative refractive power and is made of plastic. Its object-side surface 131 is convex near the optical axis 190 , and its image-side surface 132 is concave near the optical axis 190 . Both the object-side surface 131 and the image-side surface 132 are aspherical.

[0058] The fourth lens 140 has positive refractive power and is made of plastic. Its object-side surface 141 is convex near the optical axis 190 , and its image-side surface 142 is concave near the optical axis 190 . Both the object-side surface 141 and the image-side surface 142 are aspherical.

[0059] The fifth lens 150 has positive refractive power and is made of plastic. Its object-side surface 151 is convex near the optical axis 190 , and its image-side surface 152 is convex near the optical axis 190 . Both the object-side surface 151 and the image-side surface 152 are aspherical.

[0060] The sixth lens 160 has negative refractive power and is made of plastic. Its object-side surface 161 is convex near the optical axis 190 , and its image-side surface 162 is concave near the optical axis 190 . Both the object-side surface 161 and the image-side surface 162 are aspherical.

[0061] The infrared cut filter 170 (IR-cut filter) is made of glass, which is arranged between the sixth lens 160 and the imaging surface 180 and does not affect the focal length of the imaging lens group; it can be understood that the infrared cut filter 170 component can also be formed on the lens surface, and the infrared cut filter 170 can also be made of other materials.

[0062] The curve equations of the aspheric surfaces of the above lenses are expressed as follows: Wherein, z is the position value at a height of h along the optical axis 190 with the surface vertex as a reference; c is the curvature of the lens surface close to the optical axis 190, and is the inverse of the radius of curvature (R) (c=1 / R), R is the radius of curvature of the lens surface close to the optical axis 190, h is the vertical distance between the lens surface and the optical axis 190, k is the conic constant, and Ai is the i-th order aspheric coefficient.

[0063] In the first embodiment, the overall focal length of the imaging lens group is f, the aperture value (f-number) of the imaging lens group is Fno, and the maximum viewing angle of the imaging lens group is FOV, whose values ​​are as follows: f=2.50 (mm); Fno=2.27; and FOV=116.63 (degrees).

[0064] In the imaging lens assembly of the first embodiment, the angle of the maximum viewing angle of the imaging lens assembly at which the principal ray enters the imaging plane is CRA, the maximum optical effective radius of the image-side surface 162 of the sixth lens 160 is CA62, and the following condition is satisfied: CRA / CA62=13.57.

[0065] In the imaging lens group of the first embodiment, the displacement parallel to the optical axis 190 from the intersection of the image-side surface 112 of the first lens 110 on the optical axis 190 to the maximum effective radius position of the image-side surface 112 of the first lens 110 is TDP2, half of the maximum viewing angle of the imaging lens group is HFOV, the aperture value of the imaging lens group is Fno, and the following condition is satisfied: TDP2*HFOV / Fno=26.08 (millimeter*degree).

[0066] In the imaging lens set of the first embodiment, the overall focal length of the imaging lens set is f, the curvature radius of the image-side surface 152 of the fifth lens is R10, and the following condition is satisfied: f / R10=-1.05.

[0067] In the imaging lens assembly of the first embodiment, the focal length of the third lens is f3, the focal length of the fifth lens is f5, and the following condition is satisfied: f3 / f5=-1.63.

[0068] In the imaging lens assembly of the first embodiment, the distance between the object-side surface 111 of the first lens 110 and the imaging plane 180 on the optical axis 190 is TL, the maximum imaging height of the imaging lens assembly is IMH, and the following condition is satisfied: TL / IMH=2.44.

[0069] In the imaging lens group of the first embodiment, the focal length of the second lens 120 is f2, the focal length of the fifth lens is f5, the thickness of the second lens 120 on the optical axis 190 is CT2, the thickness of the fifth lens on the optical axis 190 is CT5, and the following condition is satisfied: (f2 / CT2)-(f5 / CT5)=-2.61.

[0070] In the imaging lens group of the first embodiment, the angle of the maximum viewing angle of the imaging lens group at which the principal ray is incident on the imaging plane 180 is CRA, the distance from the object side surface 111 of the first lens 110 to the imaging plane 180 on the optical axis 190 is TL, and the distance from the image side surface 162 of the sixth lens to the imaging plane 180 on the optical axis 190 is BFL, and the following condition is satisfied: CRA / (TL-BFL)=5.07 (degrees / mm).

[0071] In the imaging lens group of the first embodiment, half of the maximum viewing angle of the imaging lens group is HFOV, the maximum optical effective radius of the object side surface 111 of the first lens 110 is CA11, the maximum imaging height of the imaging lens group is IMH, and the following conditions are satisfied: HFOV*(CA11 / IMH)=43.55 (degrees).

[0072] In the imaging lens group of the first embodiment, the incident pupil diameter of the imaging lens group is EPD, the maximum optical effective radius of the object side surface 111 of the first lens 110 is CA11, the maximum optical effective radius of the image side surface 122 of the second lens 120 is CA22, and the following condition is satisfied: EPD*CA11 / CA22=2.47 (mm).

[0073] In the imaging lens assembly of the first embodiment, the maximum optical effective radius of the object side surface 111 of the first lens 110 is CA11, the thickness of the first lens 110 on the optical axis 190 is CT1, and the displacement from the intersection of the image side surface 112 of the first lens 110 on the optical axis 190 to the maximum effective radius position of the image side surface 112 of the first lens 110 parallel to the optical axis 190 is TDP2, and the following conditions are satisfied: CA11 / (CT1*TDP2)=4.69 (mm -1 ).

[0074] In the imaging lens group of the first embodiment, the curvature radius of the object side surface 161 of the sixth lens is R11, the maximum optical effective radius of the image side surface 162 of the sixth lens is CA62, the thickness of the sixth lens on the optical axis 190 is CT6, and the following condition is satisfied: R11*CA62 / CT6=22.72 (mm).

[0075] In the imaging lens group of the first embodiment, the distance from the object side surface 111 of the first lens 110 to the imaging surface 180 on the optical axis 190 is TL, and the distance from the maximum optical effective radius position of the image side surface 112 of the first lens 110 to the light stop 100 on the optical axis 190 is ET1S, and the following condition is satisfied: TL / ET1S=6.50.

[0076] In the imaging lens assembly of the first embodiment, the overall focal length of the imaging lens assembly is f, the distance between the light stop 100 and the imaging surface 180 on the optical axis 190 is CTSI, the maximum imaging height of the imaging lens assembly is IMH, and the following condition is satisfied: f*CTSI / IMH=3.98.

[0077] In the imaging lens assembly of the first embodiment, the curvature radius of the image-side surface 122 of the second lens 120 is R4, the thickness of the second lens 120 on the optical axis 190 is CT2, and the following condition is satisfied: R4 / CT2=-2.33.

[0078] In the imaging lens assembly of the first embodiment, the distance from the object-side surface 111 of the first lens 110 to the imaging plane 180 on the optical axis 190 is TL, the overall focal length of the imaging lens assembly is f, and the following condition is satisfied: TL / f=3.10.

[0079] Refer to Table 1 and Table 2 below.

[0080] Table 1 is Figure 1A The first embodiment is detailed structural data, wherein the unit of the curvature radius, thickness, gap and focal length is mm, and surfaces 0-16 represent the surfaces from the object side to the image side in sequence, surface 3 is the gap between the light bar 100 and the object side surface 121 of the second lens 120 on the optical axis 190, and the object side surface 121 of the second lens 120 is closer to the object side than the light bar 100, so it is represented by a negative value, on the contrary, if the light bar 100 is closer to the object side than the object side surface 121 of the second lens 120, it is represented by a positive value; surfaces 1, 4, 6, 8, 10, 12, 14 are the first lens 110, the second lens 120, the third lens 130, the fourth lens 140, the fifth lens 150, the sixth lens 160, the infrared filter Except for the thickness of the filter 170 on the optical axis 190; surfaces 2, 5, 7, 9, 11, 13, and 15 are respectively the gap between the first lens 110 and the light barrier 100 on the optical axis 190, the gap between the second lens 120 and the third lens 130 on the optical axis 190, the gap between the third lens 130 and the fourth lens 140 on the optical axis 190, the gap between the fourth lens 140 and the fifth lens 150 on the optical axis 190, the gap between the fifth lens 150 and the sixth lens 160 on the optical axis 190, the gap between the sixth lens 160 and the infrared rejection filter 170 on the optical axis 190, and the gap between the infrared rejection filter 170 and the imaging surface 180 on the optical axis 190.

[0081] Table 2 is the aspheric surface data in the first embodiment, wherein k represents the cone coefficient in the aspheric curve equation, and A2, A4, A6, A8, A10, A12, A14, A16, A18 and A20 are high-order aspheric surface coefficients. In addition, the following tables of the embodiments correspond to the schematic diagrams and aberration curves of the embodiments, and the definitions of the data in the tables of the embodiments are the same as those in Tables 1 and 2 of the first embodiment, and will not be repeated here.

[0082] <Second Embodiment> Please refer to Figure 2A and Figure 2B ,in, Figure 2A is a schematic diagram of an imaging lens assembly according to a second embodiment of the present invention, Figure 2B From left to right are the field curvature and distortion curves of the imaging lens assembly of the second embodiment. Figure 2A It can be seen that the imaging lens group includes, from the object side to the image side, a first lens 210, a light barrier 200, a second lens 220, a third lens 230, a fourth lens 240, a fifth lens 250, a sixth lens 260, an infrared cut filter 270 and an imaging surface 280; wherein the imaging lens group includes six lenses with refractive power, but the present invention is not limited thereto.

[0083] The first lens 210 has negative refractive power and is made of plastic. Its object-side surface 211 is concave near the optical axis 290 , and its image-side surface 212 is concave near the optical axis 290 . Both the object-side surface 211 and the image-side surface 212 are aspherical.

[0084] The second lens 220 has positive refractive power and is made of plastic. Its object-side surface 221 is convex near the optical axis 290 , and its image-side surface 222 is convex near the optical axis 290 . Both the object-side surface 221 and the image-side surface 222 are aspherical.

[0085] The third lens 230 has negative refractive power and is made of plastic. Its object-side surface 231 is convex near the optical axis 290 , and its image-side surface 232 is concave near the optical axis 290 . Both the object-side surface 231 and the image-side surface 232 are aspherical.

[0086] The fourth lens 240 has positive refractive power and is made of plastic. Its object-side surface 241 is convex near the optical axis 290 , and its image-side surface 242 is concave near the optical axis 290 . Both the object-side surface 241 and the image-side surface 242 are aspherical.

[0087] The fifth lens 250 has positive refractive power and is made of plastic. Its object-side surface 251 is convex near the optical axis 290 , and its image-side surface 252 is convex near the optical axis 290 . Both the object-side surface 251 and the image-side surface 252 are aspherical.

[0088] The sixth lens 260 has negative refractive power and is made of plastic. Its object-side surface 261 is convex near the optical axis 290 , and its image-side surface 262 is concave near the optical axis 290 . Both the object-side surface 261 and the image-side surface 262 are aspherical surfaces.

[0089] The infrared cut filter 270 (IR-cut filter) is made of glass, which is arranged between the sixth lens 260 and the imaging surface 280 and does not affect the focal length of the imaging lens group; it can be understood that the infrared cut filter 270 can also be formed on the lens surface, and the infrared cut filter 270 can also be made of other materials.

[0090] Please refer to Table 3 and Table 4 below.

[0091] In the second embodiment, the curve equation of the aspheric surface is expressed in the same form as in the first embodiment. In addition, the definitions of the parameters in the following table are the same as those in the first embodiment and are not repeated here.

[0092] The following data can be calculated by combining Table 3 and Table 4: <Third embodiment> Please refer to Figure 3A and Figure 3B ,in, Figure 3A is a schematic diagram of an imaging lens assembly according to a third embodiment of the present invention, Figure 3B From left to right are the field curvature and distortion curves of the imaging lens assembly of the third embodiment. Figure 3A It can be seen that the imaging lens group includes, from the object side to the image side, a first lens 310, a light barrier 300, a second lens 320, a third lens 330, a fourth lens 340, a fifth lens 350, a sixth lens 360, an infrared filter 370 and an imaging surface 380; wherein the imaging lens group has six lenses with refractive power, but is not limited thereto.

[0093] The first lens 310 has negative refractive power and is made of plastic. Its object side surface 311 is concave near the optical axis 390 , and its image side surface 312 is concave near the optical axis 390 . Both the object side surface 311 and the image side surface 312 are aspherical.

[0094] The second lens 320 has positive refractive power and is made of plastic. Its object-side surface 321 is convex near the optical axis 390 , and its image-side surface 322 is convex near the optical axis 390 . Both the object-side surface 321 and the image-side surface 322 are aspherical.

[0095] The third lens 330 has negative refractive power and is made of plastic. Its object-side surface 331 is convex near the optical axis 390 , and its image-side surface 332 is concave near the optical axis 390 . Both the object-side surface 331 and the image-side surface 332 are aspherical.

[0096] The fourth lens 340 has positive refractive power and is made of plastic. Its object-side surface 341 is convex near the optical axis 390 , and its image-side surface 342 is concave near the optical axis 390 . Both the object-side surface 341 and the image-side surface 342 are aspherical.

[0097] The fifth lens 350 has positive refractive power and is made of plastic. Its object-side surface 351 is convex near the optical axis 390 , and its image-side surface 352 is convex near the optical axis 390 . Both the object-side surface 351 and the image-side surface 352 are aspherical.

[0098] The sixth lens 360 has negative refractive power and is made of plastic. Its object-side surface 361 is convex near the optical axis 390 , and its image-side surface 362 is concave near the optical axis 390 . Both the object-side surface 361 and the image-side surface 362 are aspherical.

[0099] The infrared cut filter 370 (IR-cut filter) is made of glass, which is arranged between the sixth lens 360 and the imaging surface 380 and does not affect the focal length of the imaging lens group; it can be understood that the infrared cut filter 370 can also be formed on the lens surface, and the infrared cut filter 370 can also be made of other materials.

[0100] Please refer to Table 5 and Table 6 below.

[0101] In the third embodiment, the curve equation of the aspheric surface is expressed in the same form as in the first embodiment. In addition, the definitions of the parameters in the following table are the same as those in the first embodiment and are not repeated here.

[0102] The following data can be calculated by combining Table 5 and Table 6: <Fourth embodiment> Please refer to Figure 4A and Figure 4B ,in, Figure 4A is a schematic diagram of an imaging lens assembly according to a fourth embodiment of the present invention, Figure 4B From left to right are the field curvature and distortion curves of the imaging lens assembly of the fourth embodiment. Figure 4AIt can be seen that the imaging lens group includes, from the object side to the image side, a first lens 410, a light barrier 400, a second lens 420, a third lens 430, a fourth lens 440, a fifth lens 450, a sixth lens 460, an infrared filter 470 and an imaging surface 480; wherein the imaging lens group has six lenses with refractive power, but is not limited to this.

[0103] The first lens 410 has negative refractive power and is made of glass. Its object-side surface 411 is convex near the optical axis 490 , and its image-side surface 412 is concave near the optical axis 490 . Both the object-side surface 411 and the image-side surface 412 are spherical.

[0104] The second lens 420 has positive refractive power and is made of plastic. Its object-side surface 421 is convex near the optical axis 490 , and its image-side surface 422 is convex near the optical axis 490 . Both the object-side surface 421 and the image-side surface 422 are aspherical.

[0105] The third lens 430 has negative refractive power and is made of plastic. Its object-side surface 431 is concave near the optical axis 490 , and its image-side surface 432 is concave near the optical axis 490 . Both the object-side surface 431 and the image-side surface 432 are aspherical.

[0106] The fourth lens 440 has positive refractive power and is made of plastic. Its object-side surface 441 is convex near the optical axis 490 , and its image-side surface 442 is concave near the optical axis 490 . Both the object-side surface 441 and the image-side surface 442 are aspherical.

[0107] The fifth lens element 450 has positive refractive power and is made of plastic. Its object-side surface 451 is convex near the optical axis 490 , and its image-side surface 452 is convex near the optical axis 490 . Both the object-side surface 451 and the image-side surface 452 are aspherical.

[0108] The sixth lens 460 has negative refractive power and is made of plastic. Its object-side surface 461 is convex near the optical axis 490 , and its image-side surface 462 is concave near the optical axis 490 . Both the object-side surface 461 and the image-side surface 462 are aspherical.

[0109] The infrared cut filter 470 (IR-cut filter) is made of glass, which is arranged between the sixth lens 460 and the imaging surface 480 and does not affect the focal length of the imaging lens group; it can be understood that the infrared cut filter 470 can also be formed on the lens surface, and the infrared cut filter 470 can also be made of other materials.

[0110] Please refer to Table 7 and Table 8 below.

[0111] In the fourth embodiment, the curve equation of the aspheric surface is expressed in the same form as in the first embodiment. In addition, the definitions of the parameters in the following table are the same as those in the first embodiment and are not repeated here.

[0112] The following data can be calculated by combining Table 7 and Table 8: <Fifth embodiment> Please refer to Figure 5A and Figure 5B ,in, Figure 5A is a schematic diagram of an imaging lens assembly according to a fifth embodiment of the present invention, Figure 5B From left to right are the field curvature and distortion curves of the imaging lens assembly of the fifth embodiment. Figure 5A It can be seen that the imaging lens group includes, from the object side to the image side, a first lens 510, a light barrier 500, a second lens 520, a third lens 530, a fourth lens 540, a fifth lens 550, a sixth lens 560, an infrared filter 570 and an imaging surface 580; wherein the imaging lens group has six lenses with refractive power, but is not limited to this.

[0113] The first lens 510 has negative refractive power and is made of plastic. Its object side surface 511 is concave near the optical axis 590 , and its image side surface 512 is concave near the optical axis 590 . Both the object side surface 511 and the image side surface 512 are aspherical.

[0114] The second lens 520 has positive refractive power and is made of plastic. Its object-side surface 521 is convex near the optical axis 590 , and its image-side surface 522 is convex near the optical axis 590 . Both the object-side surface 521 and the image-side surface 522 are aspherical.

[0115] The third lens 530 has negative refractive power and is made of plastic. Its object-side surface 531 is convex near the optical axis 590 , and its image-side surface 532 is concave near the optical axis 590 . Both the object-side surface 531 and the image-side surface 532 are aspherical.

[0116] The fourth lens 540 has positive refractive power and is made of plastic. Its object-side surface 541 is convex near the optical axis 590 , and its image-side surface 542 is concave near the optical axis 590 . Both the object-side surface 541 and the image-side surface 542 are aspherical.

[0117] The fifth lens element 550 has positive refractive power and is made of plastic. Its object-side surface 551 is convex near the optical axis 590 , and its image-side surface 552 is convex near the optical axis 590 . Both the object-side surface 551 and the image-side surface 552 are aspherical.

[0118] The sixth lens 560 has negative refractive power and is made of plastic. Its object-side surface 561 is convex near the optical axis 590 , and its image-side surface 562 is concave near the optical axis 590 . Both the object-side surface 561 and the image-side surface 562 are aspherical.

[0119] The infrared cut filter 570 (IR-cut filter) is made of glass, which is arranged between the sixth lens 560 and the imaging surface 580 and does not affect the focal length of the imaging lens group; it can be understood that the infrared cut filter 570 can also be formed on the lens surface, and the infrared cut filter 570 can also be made of other materials.

[0120] Please refer to Table 9 and Table 10 below.

[0121] In the fifth embodiment, the curve equation of the aspheric surface is expressed in the same form as in the first embodiment. In addition, the definitions of the parameters in the following table are the same as those in the first embodiment and are not repeated here.

[0122] The following data can be calculated by combining Table 9 and Table 10: <Sixth embodiment> Please refer to Fig. 6A and Figure 6B ,in, Fig. 6A is a schematic diagram of an imaging lens assembly according to a sixth embodiment of the present invention, Figure 6B From left to right are the field curvature and distortion curves of the imaging lens assembly of the sixth embodiment. Fig. 6A It can be seen that the imaging lens group includes, from the object side to the image side, a first lens 610, a light barrier 600, a second lens 620, a third lens 630, a fourth lens 640, a fifth lens 650, a sixth lens 660, an infrared filter 670 and an imaging surface 680; wherein the imaging lens group has six lenses with refractive power, but is not limited to this.

[0123] The first lens 610 has negative refractive power and is made of plastic. Its object-side surface 611 is concave near the optical axis 690 , and its image-side surface 612 is concave near the optical axis 690 . Both the object-side surface 611 and the image-side surface 612 are aspherical.

[0124] The second lens 620 has positive refractive power and is made of plastic. Its object-side surface 621 is convex near the optical axis 690 , and its image-side surface 622 is convex near the optical axis 690 . Both the object-side surface 621 and the image-side surface 622 are aspherical.

[0125] The third lens 630 has negative refractive power and is made of plastic. Its object-side surface 631 is convex near the optical axis 690 , and its image-side surface 632 is concave near the optical axis 690 . Both the object-side surface 631 and the image-side surface 632 are aspherical.

[0126] The fourth lens 640 has positive refractive power and is made of plastic. Its object-side surface 641 is convex near the optical axis 690 , and its image-side surface 642 is concave near the optical axis 690 . Both the object-side surface 641 and the image-side surface 642 are aspherical.

[0127] The fifth lens 650 has positive refractive power and is made of plastic. Its object-side surface 651 is convex near the optical axis 690 , and its image-side surface 652 is convex near the optical axis 690 . Both the object-side surface 651 and the image-side surface 652 are aspherical.

[0128] The sixth lens 660 has negative refractive power and is made of plastic. Its object-side surface 661 is convex near the optical axis 690 , and its image-side surface 662 is concave near the optical axis 690 . Both the object-side surface 661 and the image-side surface 662 are aspherical.

[0129] The infrared cut filter 670 (IR-cut filter) is made of glass, which is arranged between the sixth lens 660 and the imaging surface 680 and does not affect the focal length of the imaging lens group; it can be understood that the infrared cut filter 670 can also be formed on the lens surface, and the infrared cut filter 670 can also be made of other materials.

[0130] Please refer to Table 11 and Table 12 below.

[0131] In the sixth embodiment, the curve equation of the aspheric surface is expressed in the same form as in the first embodiment. In addition, the definitions of the parameters in the following table are the same as those in the first embodiment and are not repeated here.

[0132] The following data can be calculated by combining Table 11 and Table 12: <Seventh embodiment> Please refer to Figure 7 , Figure 7 The camera module of the seventh embodiment of the present invention comprises a lens barrel 1000, an imaging lens group 3000 and an image sensor 2000. The imaging lens group 3000 can be the imaging lens group of the above-mentioned embodiments, the imaging lens group 3000 is arranged in the lens barrel 1000, the image sensor 2000 is arranged on the imaging surface of the imaging lens group, and is an electronic photosensitive component (such as CMOS, CCD) with good brightness and low noise, so as to truly present the imaging quality of the imaging lens group.

[0133] In the aforementioned embodiments, a person with ordinary knowledge in the relevant field should be able to understand that in the imaging lens group provided by the present invention, the lens can be made of glass or plastic. The glass lens can increase the freedom of the refractive power configuration of the imaging lens group, and the glass lens can be made by related technologies such as grinding or molding. The plastic lens can reduce the production cost.

[0134] In the imaging lens group provided by the present invention, with respect to the lens having refractive power, if the lens surface is convex and the position of the convex surface is not defined, it means that the lens surface is convex at the near optical axis; if the lens surface is concave and the position of the concave surface is not defined, it means that the lens surface is concave at the near optical axis.

[0135] The imaging lens assembly provided by the present invention can be applied to optical systems that require ultra-wide angles, high imaging quality, and miniaturization, and can be applied in many aspects to electronic imaging systems in Internet of Things (IOT) devices, but is not limited thereto.

Claims

1. An imaging lens assembly, characterized in that: It includes a diaphragm and, in sequence from the object side to the image side, includes: A first lens with negative refractive power, and the image-side surface of the first lens is concave near the optical axis; A second lens with positive refractive power, the object-side surface of the second lens is convex near the optical axis, and the image-side surface of the second lens is convex near the optical axis; A third lens with negative refractive power, and the image-side surface of the third lens is concave near the optical axis; A fourth lens with positive refractive power, the object-side surface of the fourth lens is convex near the optical axis, and the image-side surface of the fourth lens is concave near the optical axis; A fifth lens with positive refractive power, the object-side surface of the fifth lens is convex near the optical axis, and the image-side surface of the fifth lens is convex near the optical axis; and A sixth lens with negative refractive power, the object-side surface of the sixth lens is convex near the optical axis, and the image-side surface of the sixth lens is concave near the optical axis; Among them, the total number of lenses with refractive power in the imaging lens group is six. The angle at which the chief ray of the maximum viewing angle of the imaging lens group enters the imaging surface is CRA, the maximum optical effective radius of the image-side surface of the sixth lens is CA62, and the following conditions are satisfied: 9.27 < CRA / CA62 < 20.

02.

2. The imaging lens assembly according to claim 1, characterized in that: The displacement parallel to the optical axis from the intersection point of the image-side surface of the first lens on the optical axis to the position of the maximum effective radius of the image-side surface of the first lens is TDP2. Half of the maximum viewing angle of the imaging lens group is HFOV, and the f-number of the imaging lens group is Fno, and the following conditions are satisfied: 12.19 mm * degree < TDP2 * HFOV / Fno < 41.70 mm * degree.

3. The imaging lens assembly according to claim 1, characterized in that: The overall focal length of the imaging lens group is f, and the radius of curvature of the image-side surface of the fifth lens is R10, and the following conditions are satisfied: -1.6 < f / R10 < -0.

6.

4. The imaging lens assembly according to claim 1, characterized in that: The focal length of the third lens is f3, and the focal length of the fifth lens is f5, and the following conditions are satisfied: -4.01 < f3 / f5 < -1.

09.

5. The imaging lens assembly according to claim 1, characterized in that: The distance from the object-side surface of the first lens to the imaging surface on the optical axis is TL, and the maximum imaging height of the imaging lens group is IMH, and the following conditions are satisfied: 1.95 < TL / IMH < 3.

32.

6. The imaging lens assembly according to claim 1, characterized in that: The focal length of the second lens is f2, the focal length of the fifth lens is f5, the thickness of the second lens on the optical axis is CT2, and the thickness of the fifth lens on the optical axis is CT5, and the following conditions are satisfied: -3.13 < (f2 / CT2) - (f5 / CT5) < 0.

5.

7. The imaging lens assembly according to claim 1, characterized in that: The distance from the object-side surface of the first lens to the imaging surface on the optical axis is TL, and the distance from the image-side surface of the sixth lens to the imaging surface on the optical axis is BFL, and the following conditions are satisfied: 3.35 degrees / mm < CRA / (TL - BFL) < 7.03 degrees / mm.

8. The imaging lens assembly according to claim 1, characterized in that: Half of the maximum viewing angle of the imaging lens group is HFOV, the maximum optical effective radius of the object-side surface of the first lens is CA11, and the maximum imaging height of the imaging lens group is IMH, and the following conditions are satisfied: 31.70 degrees < HFOV * (CA11 / IMH) < 83.70 degrees.

9. The imaging lens assembly according to claim 1, characterized in that: The entrance pupil diameter of the imaging lens group is EPD, the maximum optical effective radius of the object-side surface of the first lens is CA11, the maximum optical effective radius of the image-side surface of the second lens is CA22, and the following conditions are satisfied: 1.12 mm < EPD * CA11 / CA22 < 3.12 mm.

10. The imaging lens assembly according to claim 1, characterized in that: The maximum optically effective radius of the object-side surface of the first lens is CA11, the thickness of the first lens on the optical axis is CT1, and the displacement amount parallel to the optical axis from the intersection point of the image-side surface of the first lens on the optical axis to the position of the maximum effective radius of the image-side surface of the first lens is TDP2, and the following conditions are satisfied: 3.49 mm -1 <CA11 / (CT1 * TDP2) < 8.87 mm -1 .

11. The imaging lens assembly according to claim 1, characterized in that: The radius of curvature of the object-side surface of the sixth lens is R11, the thickness of the sixth lens on the optical axis is CT6, and the following conditions are satisfied: 6.27 mm < R11 * CA62 / CT6 < 28.92 mm.

12. The imaging lens assembly according to claim 1, characterized in that: The distance from the object-side surface of the first lens to the imaging surface on the optical axis is TL, the distance from the position of the maximum optical effective radius of the image-side surface of the first lens to the diaphragm on the optical axis is ET1S, and the following conditions are satisfied: 4.82 < TL / ET1S < 13.

40.

13. The imaging lens assembly according to claim 1, characterized in that: The overall focal length of the imaging lens group is f, the distance between the diaphragm and the imaging surface on the optical axis is CTSI, the maximum imaging height of the imaging lens group is IMH, and the following conditions are satisfied: 1.82 mm < f * CTSI / IMH < 6.13 mm.

14. The imaging lens assembly according to claim 1, characterized in that: The radius of curvature of the image-side surface of the second lens is R4, the thickness of the second lens on the optical axis is CT2, and the following conditions are satisfied: -3.79 < R4 / CT2 < -1.

16.

15. A camera module, characterized in that: Including: A lens barrel; An imaging lens group as described in any one of claims 1 to 14, disposed in the lens barrel; and An image sensor, disposed on the imaging surface of the imaging lens group.

Images