CN101533148B - Optical imaging system of high-pixel mobile phone lens - Google Patents
Optical imaging system of high-pixel mobile phone lens Download PDFInfo
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- CN101533148B CN101533148B CN2008102079243A CN200810207924A CN101533148B CN 101533148 B CN101533148 B CN 101533148B CN 2008102079243 A CN2008102079243 A CN 2008102079243A CN 200810207924 A CN200810207924 A CN 200810207924A CN 101533148 B CN101533148 B CN 101533148B
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Abstract
The invention provides an optical imaging system of high-pixel mobile phone lens. The system consists of three lens groups, namely a first group, a second group and a third group respectively from an object space to an image space. The first group consists of a first positive lens and a second negative lens, the first surface and the second surface of the first positive lens are a convex surface and a concave surface in turn, and the first surface and the second surface of the second negative lens are a convex surface and a concave surface in turn. The second group consists of a half-moon third positive lens, and the second surface of the third positive lens is a convex surface. The third group consists of a fourth negative lens, and the first surface and the second surface of the fourth negative lens are a concave surface and a concave surface in turn. Eight surfaces of the four lenses are all aspheric surfaces. A light diaphragm is positioned between the first positive lens and the second negative lens in the first group.
Description
Technical field
The present invention provides a kind of optical imaging system of high-pixel mobile phone lens, relates in particular to the optics plastic cement lens imaging system of a kind of low cost, small size, wide tolerance range and the high requirement of image quality, and this system is applicable to the mobile phone camera camera lens.
Background technology
In recent years, along with the popular of mobile phone camera and development, the mobile lens Structural Design Requirement is more and more compacter.And the sensor devices that the digital photographing module uses is generally two kinds: CCD (charge-coupled image sensor) and CMOS (complementary metal oxide semiconductor (CMOS)).Have benefited from development of semiconductor, Pixel Dimensions can constantly be done for a short time in the module, when guaranteeing miniaturization, asks the assurance high imaging quality again, and therefore, it is very urgent that the imaging system of compact conformation and high pixel just becomes.
The mobile lens of traditional high pixel imaging system mainly is made up of four eyeglasses, and diaphragm is positioned at the foremost (near object space) of system, and simultaneously for color difference eliminating, preceding two is gummed group glass spherical lens.This system shortcoming is conspicuous: the first, and this system cost is higher, and can't accomplish compactness, can not adapt to market demands; The second, spherical limit the degree of freedom of optical system, can not improve the optical imagery performance to greatest extent; The 3rd, balsaming lens is also difficult control in production cost and qualitative control.Certainly; The optical system that the high imaging quality that uses four plastic aspheric lenes is also arranged at present; But general diaphragm also is the foremost (near object space) that is positioned at system, can't do enough compactly, and the while, four plastic lens also increased the susceptibility of system; Dwindle the tolerance range of packing engineering relatively, increased the assembling difficulty.
The present invention provides a kind of optical imaging system of high-pixel mobile phone lens, can avoid above-mentioned shortcoming effectively.
Summary of the invention
The objective of the invention is provides a kind of optical imaging system of high-pixel mobile phone lens in order to have overcome above-mentioned shortcoming.
A kind of high pixel optics imaging system provided by the invention is made up of four optics plastic cement lens, and it is made up of three groups of lens combination to picture side from object space altogether, is respectively first group, second group and the 3rd group.Be made up of first positive lens and second negative lens for first group, first of first positive lens and second face are followed successively by convex surface and concave surface, and first of second negative lens and second face are followed successively by convex surface and concave surface.Be made up of the 3rd half-moon-shaped positive lens for second group, second of the 3rd positive lens is convex surface.Be made up of the 4th negative lens for the 3rd group, first of the 4th negative lens and second face are followed successively by concave surface and concave surface.Totally eight faces of four lens are aspheric surface.Diaphragm is in first group between first positive lens and second negative lens.
Lens are staggered according to positive and negative, and the optics length overall of system can reduce effectively.Diaphragm in first group, can reduce between first positive lens and second negative lens light arrive occur on the mobile lens module sensor devices dark angle maybe, simultaneously for big field angle, can be correcting distorted well.
For correcting chromatic aberration, improve the system imaging quality simultaneously, this system satisfies relational expression:
(V
1-V
2)＞22
(V
3-V
2)＞22
V wherein
1, V
2And V
3Be respectively the Abbe number of first lens, second lens and the 3rd lens.
For the assurance system is being fit to reduce the system optics length overall under the situation about producing in batches, the first surface that this system requirements is first is a convex surface, and second curved surface is a concave surface, and the first surface of the 4th lens is a concave surface, and satisfies relational expression:
-0.01＜C
2＜0.2
-0.5＜C
7＜0.005
C wherein
2The curvature of centre of representing first second curved surface, C
7The first surface curvature of centre of representing the 4th lens.
In order to reduce the quality sensitivity that causes by each lens thickness of system, curved surface or airspace tolerance; Improve the qualification rate of producing in batches; This system requirements aperture diaphragm is between the first surface of second curved surface of first lens and second lens, and system satisfies following relational expression:
d
2/(d
1+d
2+d
3)＜0.08
(S
11+S
12)/d
1＞0.40
(S
31+S
32)/d
5＜-0.8
D wherein
1Be first lens center thickness, d
2Be the airspace of first lens and second lens, d
3Be second lens center thickness.S
11The first surface of first lens of expression is located axial difference at maximum gauge place and summit, for just, is negative during the folder obtuse angle when direction at place, summit sensing maximum gauge place and optical axis direction folder acute angle; S
12Second curved surface of first lens of expression is located axial difference at maximum gauge place and summit, for just, is negative during the folder obtuse angle when direction at place, summit sensing maximum gauge place and optical axis direction folder acute angle; d
1Be first lens center thickness.S
31The first surface of representing the 3rd lens is in maximum gauge place and place, summit axial difference, and the direction that the place, summit points to the maximum gauge place for just, is to bear during the folder obtuse angle during with optical axis direction folder acute angle; S
32Second curved surface of representing the 3rd lens is in maximum gauge place and place, summit axial difference, and the direction that the place, summit points to the maximum gauge place for just, is to bear during the folder obtuse angle during with optical axis direction folder acute angle; d
5Be the 3rd lens center thickness.
Description of drawings
Fig. 1 is the schematic cross-section of high-pixel mobile phone lens imaging system embodiment 1 of the present invention.
Fig. 2-1 is the curvature of field and the distortion curve synoptic diagram of high-pixel mobile phone lens imaging system embodiment 1 of the present invention.
Fig. 2-2 is that the axle of high-pixel mobile phone lens imaging system embodiment 1 of the present invention is gone up penalty kick dyeing difference curve synoptic diagram.
Fig. 2-3 is the lateral chromatic aberration curve synoptic diagram of high-pixel mobile phone lens imaging system embodiment 1 of the present invention.
Fig. 3 is the schematic cross-section of high-pixel mobile phone lens imaging system embodiment 2 of the present invention.
Fig. 3-1 is the curvature of field and the distortion curve synoptic diagram of high-pixel mobile phone lens imaging system embodiment 2 of the present invention.
Fig. 3-2 is that the axle of high-pixel mobile phone lens imaging system embodiment 2 of the present invention is gone up penalty kick dyeing difference curve synoptic diagram.
Fig. 3-3 is the lateral chromatic aberration curve synoptic diagram of high-pixel mobile phone lens imaging system embodiment 2 of the present invention.
Fig. 4 is the schematic cross-section of high-pixel mobile phone lens imaging system embodiment 3 of the present invention.
Fig. 4-1 is the curvature of field and the distortion curve synoptic diagram of high-pixel mobile phone lens imaging system embodiment 3 of the present invention.
Fig. 4-2 is that the axle of high-pixel mobile phone lens imaging system embodiment 3 of the present invention is gone up penalty kick dyeing difference curve synoptic diagram.
Fig. 4-3 is the lateral chromatic aberration curve synoptic diagram of high-pixel mobile phone lens imaging system embodiment 3 of the present invention.
Embodiment
Below in conjunction with specific embodiment, the present invention is described further.
See also Fig. 1, the present invention provides a kind of optics of lens imaging system of high-pixel mobile phone lens.This system is made up of three groups of lens combination to picture side from object space altogether, is respectively first group 10, second groups 20 and the 3rd groups 30.Be made up of first positive lens 11 and second negative lens 12 for first group, first R1 and second R2 of first positive lens are followed successively by convex surface and concave surface, and first R3 and second R4 of second negative lens 12 are followed successively by convex surface and concave surface.Be made up of the 3rd half-moon-shaped positive lens 21 for second group, second R6 of the 3rd positive lens is convex surface.Be made up of the 4th negative lens 31 for the 3rd group, first R7 and second R8 of the 4th negative lens are followed successively by concave surface and concave surface.Totally eight faces of four lens are aspheric surface.Diaphragm 40 is in first group 10 between first positive lens 11 and second negative lens 12.
For correcting chromatic aberration, improve the system imaging quality simultaneously, this system satisfies relational expression:
(V
1-V
2)＞22
(V
3-V
2)＞22
V wherein
1, V
2And V
3Be respectively the Abbe number of first lens 11, second lens 12 and the 3rd lens 31.
For the assurance system is being fit to reduce the system optics length overall under the situation of volume production, the first surface R1 of first lens 11 of this system requirements is a convex surface, and the second curved surface R2 is a concave surface, and the first surface of the 4th lens 31 is a concave surface, and satisfies relational expression:
-0.01＜C
2＜0.2
-0.5＜C
7＜0.005
C wherein
2The curvature of centre of the second curved surface R2 of first lens 11 of expression, C
7The first surface R7 curvature of centre of representing the 4th lens 31.
In order to reduce system tolerance sensitivity, improve the yields of volume production, this system requirements aperture diaphragm 40 is between the first surface R3 of the second curved surface R2 of first lens 11 and second lens 12, and system satisfies following relational expression:
d
2/(d
1+d
2+d
3)＜0.08
(S
11+S
12)/d
1＞0.40
(S
31+S
32)/d
5＜-0.8
D wherein
1Be first lens 11 center thickness, d
2Be the airspace of first lens 11 and second lens 12, d
3Be second lens 12 center thickness; S
11The first surface R1 of first lens 11 of expression locates axial difference at maximum gauge place and summit, for just, is negative during the folder obtuse angle when direction at place, summit sensing maximum gauge place and optical axis direction folder acute angle; S
12The second curved surface R2 of first lens 11 of expression locates axial difference at maximum gauge place and summit, for just, is negative during the folder obtuse angle when direction at place, summit sensing maximum gauge place and optical axis direction folder acute angle; d
1Be first lens 11 center thickness; S
31The first surface of representing the 3rd lens 21 is in maximum gauge place and place, summit axial difference, and the direction that the place, summit points to the maximum gauge place for just, is to bear during the folder obtuse angle during with optical axis direction folder acute angle; S
32The second curved surface R6 that representes the 3rd lens 21 locates axial difference at maximum gauge place and summit, for just, is negative during the folder obtuse angle when direction at place, summit sensing maximum gauge place and optical axis direction folder acute angle; d
5Be the 3rd lens 21 center thicknesses.
In following embodiment, f representes the focal length of system, F
NOThe expression f-number, r representes the radius-of-curvature on curved surface summit, d representes to arrive the distance of one side down, n when the front
dThe refractive index of the d line of expression material, V
i(i=1,2,3 ...) the expression Abbe number, K representes the quadric surface coefficient, B, C, D, E, F, G represent quadravalence, six rank, eight rank, ten rank, ten second orders respectively, and ten quadravalence curved surface coefficients, TOTR representes the length overall of system.
In the present embodiment, this lens system satisfies table 1, the condition of table 2:
Table 1
| The surface sequence number | r | d | n d | V | |
| 1 | Thing | - | 800 | ||
| 2 | |
1.09853 | 0.537 | 1.525 | 56.2 |
| 3 | 32.6 | 0.0224 | |||
| 4 | Diaphragm | - | 0.0228 | ||
| 5 | |
6.269 | 0.33 | 1.632 | 23.4 |
| ?6 | 1.56 | 0.546 | |||
| 7 | Lens 21 | -2.3576 | 0.84 | 1.525 | 56.2 |
| 8 | -0.766 | 0.087 | |||
| 9 | Lens 31 | -8.47 | 0.474 | 1.5146 | 57.2 |
| 10 | 1.157 | 0.21 | |||
| 11 | Sheet glass | - | 0.61 | 1.516 | 64.1 |
| 12 | - | 0.423 | |||
| 13 | Image planes | - |
In the present embodiment, the focal distance f=3.3mm of system, F
NO=2.8, angle of half field-of view is 35 degree, the length overall TOTR=4.1mm of system.Table 3 is a conditional result of calculation.
Table 3
| Conditional | The result |
| (V 1-V 2)＞22 | 22.8 |
| (V 3-V 2)＞22 | 22.8 |
| -0.01＜C 2＜0.2 | 0.031 |
| -0.5＜C 7＜0.005 | -0.118 |
| d 2/(d 1+d 2+d 3)＜0.08 | 0.05 |
| (S 11+S 12)/d 1＞0.40 | 0.58 |
| (S 31+S 32)/d 5＜-0.8 | -1.52 |
Embodiment 2
In the present embodiment, this lens system satisfies table 4, the condition of table 5:
Table 4
| The surface sequence number | r | d | n d | V | |
| 1 | Thing | - | 800 | ||
| 2 | |
1.151 | 0.633 | 1.525 | 56.2 |
| 3 | -101.121 | 0.0247 | |||
| 4 | Diaphragm | - | 0.0237 | ||
| 5 | |
20 | 0.33 | 1.632 | 23.4 |
| 6 | 1.753 | 0.48 | |||
| 7 | Lens 21 | -2.756 | 0.887 | 1.525 | 56.2 |
| 8 | -0.7406 | 0.239 | |||
| 9 | Lens 31 | -3.095 | 0.398 | 1.525 | 56.2 |
| 10 | 1.3365 | 0.213 | |||
| 11 | Sheet glass | - | 0.60 | 1.516 | 64.1 |
| 12 | - | 0.348 | |||
| 13 | Image planes | - |
Table 5
| The surface sequence number | K | B | C | D | E | F | G |
| 2 | 0.703 | -6.056672E-003 | 0.034174 | -0.128764 | 0.217915 | ||
| 3 | -47.558 | 0.556934 | -1.460258 | 3.957041 | -6.121018 | ||
| 5 | 100.00 | 0.331557 | -1.003449 | 0.402155 | -0.913613 | ||
| 6 | -8.691 | 0.365005 | -0.659022 | 0.723478 | -0.319519 | ||
| 7 | -2.870 | -0.186946 | 0.310045 | -0.649579 | 0.516096 | ||
| 8 | -3.8594 | -0.488578 | 0.580377 | -0.479435 | 0.165451 | ||
| 9 | 1.298387 | -0.078984 | 0.082544 | -0.021472 | 2.188867E-003 | - | |
| 10 | -13.753 | -0.105457 | 0.02328 | -3.998279E-003 | 3.815826E-004 |
In the present embodiment, the focal distance f=3.25mm of system, F
NO=2.9, angle of half field-of view is 35 degree, the length overall TOTR=4.2mm of system.Table 6 is a conditional result of calculation.
Table 6
| Conditional | The result |
| (V 1-V 2)＞22 | 22.8 |
| (V 3-V 2)＞22 | 22.8 |
| -0.01＜C 2＜0.2 | -0.0099 |
| -0.5＜C 7＜0.005 | -0.32 |
| d 2/(d 1+d 2+d 3)＜0.08 | 0.048 |
| (S 11+S 12)/d 1＞0.40 | 0.565 |
| (S 31+S 32)/d 5＜-0.8 | -1.11 |
Embodiment 3
In the present embodiment, this lens system satisfies table 7, the condition of table 8:
Table 7
| The surface sequence number | r | d | n d | v d | |
| 1 | Thing | - | 800 | ||
| 2 | |
1.3367 | 0.71258 | 1.525 | 56.2 |
| 3 | -122.83 | 0.028 | |||
| 4 | Diaphragm | - | 0.021 | ||
| 5 | |
5.10 | 0.3775 | 1.632 | 23.4 |
| 6 | 1.4946 | 0.613 | |||
| 7 | Lens 21 | -5.002 | 0.930 | 1.525 | 56.2 |
| 8 | -0.911 | 0.197 | |||
| 9 | Lens 31 | -11.645 | 0.4329 | 1.525 | 56.2 |
| 10 | 1.2045 | 0.232 | |||
| 11 | Sheet glass | - | 0.3 | 1.516 | 64.1 |
| 12 | - | 0.557 | |||
| 13 | Image planes | - |
Table 8
| The surface sequence number | K | B | C | D | E | F | G |
| 2 | -0.2303 | 0.031380 | 0.069490 | -0.082654 | 0.135610 | ||
| 3 | 100.00 | 0.33648 | -1.17997 | 3.36275 | -3.87240 | ||
| 5 | 71.738 | 0.1112 | -1.30943 | 3.608471 | -6.285991 | ||
| 6 | -8.630 | 0.29234 | -0.429275 | 0.426784 | -0.115776 | ||
| 7 | -117.51 | -0.14780 | 0.229436 | -0.30520 | 0.13722 | ||
| 8 | -4.722 | -0.231 | 0.244757 | -0.149239 | 0.033762 | ||
| 9 | 25.197 | -0.07901 | 0.04751 | -8.961643E-003 | 6.477015E-004 | - | |
| 10 | -9.721 | -0.06998 | 8.491861E-003 | -9.956093E-005 | 7.002067E-006 |
In the present embodiment, the focal distance f=3.56mm of system, F
NO=2.8, angle of half field-of view is 33 degree, the length overall TOTR=4.4mm of system.Table 9 is a conditional result of calculation.
Table 9
| Conditional | The result |
| (V 1-V 2)＞22 | 22.8 |
| (V 3-V 2)＞22 | 22.8 |
| -0.01＜C 2＜0.2 | -0.008 |
| -0.5＜C 7＜0.005 | -0.086 |
| d 2/(d 1+d 2+d 3)＜0.08 | 0.044 |
| (S 11+S 12)/d 1＞0.40 | 0.501 |
| (S 31+S 32)/d 5＜-0.8 | -1.01 |
To sum up, the present invention provides a kind of optical imaging system of high-pixel mobile phone lens.This system is made up of three groups of lens combination to picture side from object space altogether, is respectively first group, second group and the 3rd group.Be made up of first positive lens and second negative lens for first group, first of first positive lens and second face are followed successively by convex surface and concave surface, and first of second negative lens and second face are followed successively by convex surface and concave surface.Be made up of the 3rd half-moon-shaped positive lens for second group, second of the 3rd positive lens is convex surface.Be made up of the 4th negative lens for the 3rd group, first of the 4th negative lens and second face are followed successively by concave surface and concave surface.Totally eight faces of four lens are aspheric surface.Diaphragm is in first group between first positive lens and second negative lens.This system realizes the imaging system of low cost, wide tolerance range and short optics length overall under the prerequisite that guarantees high pixel, be applicable to the product production in enormous quantities.
Claims (9)
1. optical imaging system of high-pixel mobile phone lens, this system is made up of three groups of lens combination to picture side from object space altogether, is respectively first group, second group and the 3rd group,
Be made up of first positive lens and second negative lens for first group, the first surface of first positive lens and second curved surface are followed successively by convex surface and concave surface, and the first surface of second negative lens and second curved surface are followed successively by convex surface and concave surface;
Be made up of the 3rd half-moon-shaped positive lens for second group, second curved surface of the 3rd positive lens is a convex surface.
Be made up of the 4th negative lens for the 3rd group, the first surface and second curved surface of the 4th negative lens are followed successively by concave surface and concave surface;
Totally eight curved surfaces of four lens are aspheric surface;
Diaphragm is in first group between first positive lens and second negative lens; And said diaphragm is between the said first surface of said second curved surface of said first lens and said second lens;
It is characterized in that this system satisfies relational expression: (S
11+ S
12)/d
1＞0.40; S wherein
11The first surface of first lens of expression is located axial difference at maximum gauge place and summit, for just, is negative during the folder obtuse angle when place, summit points to maximum gauge place and optical axis direction folder acute angle; S
12Second curved surface of first lens of expression is located axial difference at maximum gauge place and summit, for just, is negative during the folder obtuse angle when place, summit points to maximum gauge place and optical axis direction folder acute angle; d
1Be first lens center thickness.
2. a kind of optical imaging system of high-pixel mobile phone lens according to claim 1 is characterized in that, in first group of lens, first first surface is a convex surface, and second curved surface is a concave surface; And the curvature of centre C of first second curved surface
2Satisfy relational expression :-0.01＜C
2＜0.2.
3. a kind of optical imaging system of high-pixel mobile phone lens according to claim 1 is characterized in that this system satisfies relational expression: (V
1-V
2)＞22, (V
3-V
2)＞22 are V wherein
1, V
2And V
3Be respectively the Abbe number of first lens, second lens and the 3rd lens.
4. a kind of optical imaging system of high-pixel mobile phone lens according to claim 1 is characterized in that this system satisfies relational expression: d
2/ (d
1+ d
2+ d
3)＜0.08; D wherein
1Be first lens center thickness, d
2Be the airspace of first lens and second lens, d
3Be second lens center thickness.
5. a kind of optical imaging system of high-pixel mobile phone lens according to claim 1 is characterized in that this system satisfies relational expression: (S
31+ S
32)/d
5＜-0.8; S wherein
31The first surface of representing the 3rd lens for just, is to bear during the folder obtuse angle in maximum gauge place and place, summit axial difference when the place, summit points to the maximum gauge place with optical axis direction folder acute angle; S
32Second curved surface of representing the 3rd lens for just, is to bear during the folder obtuse angle in maximum gauge place and place, summit axial difference when the place, summit points to the maximum gauge place with optical axis direction folder acute angle; d
5Be the 3rd lens center thickness.
6. a kind of optical imaging system of high-pixel mobile phone lens according to claim 1 is characterized in that, the first surface of the 4th lens is a concave surface, and this center of surface curvature C
7Satisfy relational expression :-0.5＜C
7＜0.005.
7. the lens imaging system of a kind of mobile lens according to claim 1 is characterized in that, the equality below described aspheric surface all satisfies:
Wherein z representes that curved surface leaves the distance of curved surface summit at optical axis direction, and C representes the curvature on curved surface summit, and K representes the quadric surface coefficient; H representes the distance of optical axis to curved surface; B, C, D, E, F represent quadravalence, six rank, eight rank, ten rank respectively, ten second orders, ten quadravalence curved surface coefficients.
8. a kind of optical imaging system of high-pixel mobile phone lens according to claim 1 is characterized in that, described aperture diaphragm is between the first surface of second curved surface of first lens and second lens.
9. a kind of optical imaging system of high-pixel mobile phone lens according to claim 1 is characterized in that, described four lens are plastic lens.
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102540418B (en) * | 2010-12-15 | 2014-03-12 | 大立光电股份有限公司 | Optical photographic lens assembly |
| CN102955225A (en) * | 2011-08-19 | 2013-03-06 | 佛山普立华科技有限公司 | Imaging lens |
| CN102902048B (en) * | 2012-09-26 | 2014-11-05 | 东莞市旭业光电科技有限公司 | Optical lens assembly |
| JP6635190B2 (en) * | 2016-04-01 | 2020-01-22 | コニカミノルタ株式会社 | Imaging lens, lens unit, and imaging device |
| TWI631364B (en) * | 2016-11-03 | 2018-08-01 | 先進光電科技股份有限公司 | Optical image capturing system |
| CN107092077B (en) * | 2017-06-23 | 2022-09-16 | 浙江舜宇光学有限公司 | Optical imaging system |
| CN107678141B (en) * | 2017-10-27 | 2023-10-17 | 辽宁中蓝光电科技有限公司 | High-definition mobile phone lens applicable to full screen |
| CN110531496A (en) * | 2019-09-05 | 2019-12-03 | 哈尔滨理工大学 | A kind of optical lens for iris recognition |
| CN112162386B (en) * | 2020-10-23 | 2023-08-08 | 江西晶超光学有限公司 | Optical lens, lens module and electronic equipment |
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| CN1673795A (en) * | 2004-03-27 | 2005-09-28 | 鸿富锦精密工业（深圳）有限公司 | Digital camera lens |
| TW200811572A (en) * | 2006-08-17 | 2008-03-01 | Largan Precision Co Ltd | Optical lens assembly for taking image |
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|---|---|---|---|---|
| TW347577B (en) * | 1995-06-07 | 1998-12-11 | Symetrix Corp | Bottom electrode structure for integrated circuit capacitors and method of making the same |
| CN1673795A (en) * | 2004-03-27 | 2005-09-28 | 鸿富锦精密工业（深圳）有限公司 | Digital camera lens |
| TW200811572A (en) * | 2006-08-17 | 2008-03-01 | Largan Precision Co Ltd | Optical lens assembly for taking image |
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