CN101762866A - Wide-angle lens and camera - Google Patents
Wide-angle lens and camera Download PDFInfo
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- CN101762866A CN101762866A CN200810241689A CN200810241689A CN101762866A CN 101762866 A CN101762866 A CN 101762866A CN 200810241689 A CN200810241689 A CN 200810241689A CN 200810241689 A CN200810241689 A CN 200810241689A CN 101762866 A CN101762866 A CN 101762866A
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- 230000003287 optical effect Effects 0.000 claims abstract description 24
- 239000006185 dispersion Substances 0.000 claims description 39
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- 239000000463 material Substances 0.000 claims description 18
- 239000011248 coating agent Substances 0.000 claims description 5
- 238000000576 coating method Methods 0.000 claims description 5
- 239000000571 coke Substances 0.000 claims description 5
- 239000012528 membrane Substances 0.000 claims 1
- 238000004519 manufacturing process Methods 0.000 abstract description 7
- 238000012544 monitoring process Methods 0.000 abstract description 3
- 230000004075 alteration Effects 0.000 description 20
- 230000000007 visual effect Effects 0.000 description 11
- 238000003384 imaging method Methods 0.000 description 9
- 238000013461 design Methods 0.000 description 7
- 238000001914 filtration Methods 0.000 description 4
- 238000012546 transfer Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 241000700608 Sagitta Species 0.000 description 2
- 201000009310 astigmatism Diseases 0.000 description 2
- 238000012937 correction Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 206010010071 Coma Diseases 0.000 description 1
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- 230000000295 complement effect Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
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- 230000008569 process Effects 0.000 description 1
- 238000012797 qualification Methods 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
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Abstract
本发明涉及一种广角镜头及摄像机，该镜头包括：具有负光焦度的前组、具有正光焦度的后组和滤光片，前组包括第一负透镜和第二负透镜，后组包括自物方至像方依次排列的第一正透镜、第二正透镜和第三正透镜，滤光片位于所述第三正透镜之后。还提供了一种基于该广角镜头的摄像机，该广角镜头采用较少的镜片，并根据各镜片的排列，达到了视场角较大的广角镜头，降低了其生产成本。该广角镜头结构简单，降低了它的生产难度，制造便宜，其光学全长小于28mm，其模块高度可做到比较短，使其可较小的作为车载广角镜头，监控镜头等使用，较好的满足了摄像头的小巧化，其全视场达到200度，可满足较宽的取景范围。
The invention relates to a wide-angle lens and a video camera, the lens comprises: a front group with negative refractive power, a rear group with positive refractive power and an optical filter, the front group includes a first negative lens and a second negative lens, and the rear group includes The first positive lens, the second positive lens and the third positive lens are arranged in order from the object side to the image side, and the filter is located behind the third positive lens. A video camera based on the wide-angle lens is also provided. The wide-angle lens adopts fewer lenses, and according to the arrangement of the lenses, a wide-angle lens with a larger field of view is achieved, thereby reducing its production cost. The wide-angle lens has a simple structure, which reduces its production difficulty and is cheap to manufacture. Its overall optical length is less than 28mm, and its module height can be relatively short, so that it can be used as a vehicle-mounted wide-angle lens and a monitoring lens, etc. The miniaturization of the camera is achieved, and its full field of view reaches 200 degrees, which can meet a wide viewing range.
Description
Technical field
The present invention relates to a kind of optical lens, relate in particular to a kind of wide-angle lens and video camera.
Background technology
Modern device for image has been widely used in each field, when device for image is applied in some specific area, can need wide-angle lens to increase the visual field.Wide-angle lens is the significant components of some big visual field projects, as supervising device, and popular day by day in recent years rear-view mirror of car for back astern or the like.The quality of the imaging performance of camera lens and the size of visual field decision wide-angle lens, thereby the performance of camera lens and visual field become the significant consideration of design wide-angle lens.In order to guarantee high image quality and brightness, reach enough field angle, digital imaging system needs bigger space to come flexion light, often adopt the quantity that increases eyeglass, adopt the high-quality material of high-refractivity and low-dispersion value, perhaps adopt the method for aspheric shape to proofread and correct aberration, improve image quality; This product length does not reach compact requirement far away, and the face shape of single camera lens is comparatively complicated; Thereby increased the camera lens volume on the one hand, be difficult for machine-shaping on the other hand, caused production cost higher.
Summary of the invention
Technical matters to be solved by this invention is that the prior art wide-angle lens needs more eyeglass will reach big field angle the time, thereby brings the cost problem of higher.
The present invention realizes like this, a kind of wide-angle lens, this camera lens comprises: have preceding group of negative power, have back group and optical filter of positive light coke, group comprises first negative lens and second negative lens before described, described back group comprises first positive lens, second positive lens and the 3rd positive lens that is arranged in order from object space to picture side, and described optical filter is positioned at after described the 3rd positive lens.
The present invention also provides a kind of video camera based on this wide-angle lens, at least comprise: have preceding group of negative power, have back group and optical filter of positive light coke, group comprises first negative lens and second negative lens before described, described back group comprises first positive lens, second positive lens and the 3rd positive lens that is arranged in order from object space to picture side, and described optical filter is positioned at after described the 3rd positive lens.
Wide-angle lens provided by the invention adopts less eyeglass, and according to the arrangement of each eyeglass, has reached the bigger wide-angle lens of field angle, has reduced its production cost.It is simple in structure, has reduced its production difficulty, makes cheap.This wide-angle lens, its optical full length are less than 28mm, and its module height can be accomplished shorter, make the vehicle-mounted wide-angle lens of conduct that it can be less, and the compact of camera satisfied in uses such as monitoring camera lens preferably; Its full visual field reaches 200 degree, can satisfy the viewfinder range of broad.
Description of drawings
Fig. 1 is the structural representation of wide-angle lens embodiment of the present invention;
Fig. 2 is MTF (optical transfer function) figure of wide-angle lens embodiment of the present invention;
Fig. 3 is the optical distortion figure of wide-angle lens embodiment of the present invention;
Fig. 4 is the curvature of field figure of wide-angle lens embodiment of the present invention;
Fig. 5 is the spherical aberration figure of wide-angle lens embodiment of the present invention;
Fig. 6 is the transverse axis chromaticity difference diagram of wide-angle lens embodiment of the present invention.
Embodiment
In order to make purpose of the present invention, technical scheme and advantage clearer,, the present invention is further elaborated below in conjunction with drawings and Examples.Should be appreciated that specific embodiment described herein only in order to explanation the present invention, and be not used in qualification the present invention.
Fig. 1 shows the structural representation of wide-angle lens provided by the invention, for convenience of explanation, only shows part related to the present invention.
This wide-angle lens, it comprises with negative power preceding group, has back group and optical filter of positive light coke, group comprises first negative lens 1 and second negative lens 2 before described, described back group comprises first positive lens 3, second positive lens and the 3rd positive lens 6 that is arranged in order from object space to picture side, and described optical filter 7 is positioned at after described the 3rd positive lens 6.
Wherein second positive lens is a balsaming lens, comprise the 3rd negative lens 4 and the 4th positive lens 5, described the 3rd negative lens 4 and described the 4th positive lens 5 are bonded together and form protruding lens to picture side, and described the 3rd negative lens 4 is near object space, and described the 4th positive lens 5 is near picture side.
This wide-angle lens also comprises fixed aperture 8, and wherein fixed aperture 8 is between described first positive lens and described second positive lens.
Wherein to have protruding first surface and upper and lower side to object space be the recessed second surface to picture side of plane and middle position to first negative lens 1, be positioned at the top of camera lens, it is recessed the 4th surface to picture side of plane and middle position that described second negative lens 2 has recessed the 3rd surface and upper and lower side to object space, described first positive lens 3 has protruding the 5th surface and the 6th surface to object space, described the 6th surface is the plane, described the 3rd negative lens 4 has protruding the 7th surface and recessed the 8th surface to picture side to object space, described the 4th positive lens 5 has protruding the 9th surface and protruding the tenth surface to picture side to object space, the 8th surface and the 9th surface are the cemented surface of described the 3rd negative lens and described the 4th positive lens, and described the 3rd positive lens 6 has protruding the 11 surface and recessed the 12 surface to picture side to object space.
Wherein above-mentioned all surface is sphere.
Wherein first negative lens 1, second negative lens 2, first positive lens 3, second positive lens and the 3rd positive lens 6 are glass material.
Wherein the refractive index of first negative lens 1 and dispersion range can be at 1.45＜n
1＜1.70,50＜v
1＜75, in this preferred embodiment, adopt the glass material of H-QK1 model, its refractive index and chromatic dispersion are respectively n
1=1.470466, v
1=66.8992.
The refractive index of second negative lens 2 and dispersion range can be at 1.45＜n
2＜1.75,50＜v
2＜65, in this preferred embodiment, adopt the glass material of N-SK14 model, its refractive index and chromatic dispersion are respectively n
2=1.603110, v
2=60.596819.
The refractive index of first positive lens 3 and dispersion range can be at 1.55＜n
3＜1.70,30＜v
3＜50, in this preferred embodiment, adopt the glass material of F6 model, its refractive index and chromatic dispersion are respectively n
3=1.636359, v
3=35.3412.
The refractive index of the 3rd negative lens 4 and dispersion range can be at 1.70＜n
4＜1.85,20＜v
4＜30, in this preferred embodiment, adopt the glass material of N-SF1 model, its refractive index and chromatic dispersion are respectively n
4=1.717360, v
4=29.6201.
The refractive index of the 4th positive lens 5 and dispersion range can be at 1.55＜n
5＜1.70,50＜v
5＜65, in this preferred embodiment, adopt the glass material of H-ZK6 model, its refractive index and chromatic dispersion are respectively n
5=1.612718, v
5=58.578159.
The refractive index of the 3rd positive lens 6 and dispersion range can be at 1.5＜n
6＜1.65,55＜v
6＜70, in this preferred embodiment, adopt the glass material of BK8 model, its refractive index and chromatic dispersion are respectively n
6=1.520152, v
6=63.685744.
In the present embodiment, optical filter 7 is BK7, and refractive index and chromatic dispersion are respectively n=1.5168, v=64.17.In addition, the optical filter known infrared cut-off light filtering films of 7 at least one coating surface one decks (IR-cut Coating) come from Infrared in the object reflection ray with filtering, thereby improve image quality.
It adopts the sphere design fully, thereby can revise various differing by optimizing the sphere coefficient; Selection by glass material reduces aberration; Adopt the glass mirror design can improve brightness simultaneously, strengthen transmitance, obtain favorable imaging quality simultaneously; Simultaneously because lens all adopt glass material in the design, make it can be high temperature resistant, humidity, stable performance is fit to industry and uses.This kind wide-angle lens imaging integral body is mutually high higher, and field angle is bigger, thus adopt the wide-angle lens of this kind structure can effectively shorten camera lens length overall, reduce the camera lens volume; First negative lens is protruding in object space, can effectively reduce the curvature of field and astigmatism. spherical aberration is reduced, first positive lens is protruding in object space, can reduce the chief ray emergence angle, the off-axis aberration of update the system focuses on the visual field, edge better, so the optical lens assembly of this kind of employing structure can be to each aberration, carry out good rectification, make it obtain optical property preferably.
The minute surface parameter of the embodiment of the invention is as follows:
Thickness (at interval) in the last table refers to the distance of this face to next face, as above in the table first surface capable in thickness be 38.048, promptly refer in first negative lens before the distance of one side and back one side, the i.e. thickness of first negative lens.And second surface capable in thickness 5.334, refer to the distance of this face to following one side first face of second negative lens (promptly to), the interval between the eyeglass that just be meant this moment.
Camera lens effective focal length of the present invention is f=1.88mm, F/#=2.0, and its optical full length is less than 28mm, and its full visual field reaches 200 degree.Its module height can be accomplished shorter, makes the vehicle-mounted wide-angle lens of conduct that it can be less, uses such as monitoring camera lens.
Fig. 2 is modulation transfer function (Modulation Transfer Function the is called for short MTF) curve map of wide-angle lens, transverse axis representation space frequency among the figure, and unit: line is to every millimeter (1p/mm); The longitudinal axis is represented the numerical value of modulation transfer function (MTF), and the numerical value of described MTF is used for estimating the image quality of camera lens, and span is 0-1, and the image quality of the high more straight more expression camera lens of MTF curve is good more, and is strong more to the reducing power of true picture.As can be seen from Figure 2, the MTF curve of each visual field meridian direction (T) and sagitta of arc direction (S) direction very close to, it shows: this lens assembly is in each visual field, the imaging performance of meridian direction (T) and this both direction of sagitta of arc direction (S) has good consistance, can guarantee that lens assembly can both blur-free imaging on whole imaging surface, and clear, ill-defined situation in the middle of can not occurring.
Fig. 3 is the distortion synoptic diagram of the wide-angle lens of present embodiment, and wherein transverse axis is a number percent, and the longitudinal axis is the visual field.Distortion is a kind of distortion of real lens during to object image-forming, and it can make straight line be imaged as curve, is inevitably in actual imaging, and distortion is less than 100%, and it satisfies bigger field angle.
Fig. 4 is the curvature of field figure of embodiment of the invention wide-angle lens, and as can be seen from Figure 4, the curvature of field of this wide-angle lens is less than 0.10mm; Can cooperate the requirement of complementary metal oxide semiconductor (CMOS) (CMOS)/Charge Coupled Device (CCD) (Charge Coupled Device is called for short CCD) image sensor reception of main flow on the market.
Fig. 5 is the spherical aberration figure of wide-angle lens embodiment of the present invention.
Fig. 6 is the transverse axis aberration synoptic diagram of present embodiment, maximum field of view angle in Fig. 5 (MAXIUM FIELD), be that angle of half field-of view is 100 degree, whole field angle is 200 degree, transverse axis among the figure is a length scale, the um of unit (1*E-6m), Aili spot (Airy), promptly under the situation of diffraction limit (the optimal imaging situation of desirable camera lens), minimum hot spot is an Aili spot during light focusing.As can be seen from Figure, the transverse axis aberration of wide-angle lens is less than 5 μ m, and all in the Aili spot magnitude range, the chromatic aberration correction of expression camera lens is good for the size of transverse axis aberration.
A kind of video camera, it comprises with negative power preceding group, has back group and optical filter of positive light coke, group comprises first negative lens 1 and second negative lens 2 before described, described back group comprises first positive lens 3, second positive lens and the 3rd positive lens 6 that is arranged in order from object space to picture side, and described optical filter 7 is positioned at after described the 3rd positive lens 6.
Wherein second positive lens is a balsaming lens, comprise the 3rd negative lens 4 and the 4th positive lens 5, described the 3rd negative lens 4 and described the 4th positive lens 5 are bonded together and form protruding lens to picture side, and described the 3rd negative lens 4 is near object space, and described the 4th positive lens 5 is near picture side.
This wide-angle lens also comprises fixed aperture 8, and wherein fixed aperture 8 is between described first positive lens and described second positive lens.
Wherein to have protruding first surface and upper and lower side to object space be the recessed second surface to picture side of plane and middle position to first negative lens 1, be positioned at the top of camera lens, it is recessed the 4th surface to picture side of plane and middle position that described second negative lens 2 has recessed the 3rd surface and upper and lower side to object space, described first positive lens 3 has protruding the 5th surface and the 6th surface to object space, described the 6th surface is the plane, described the 3rd negative lens 4 has protruding the 7th surface and recessed the 8th surface to picture side to object space, described the 4th positive lens 5 has protruding the 9th surface and protruding the tenth surface to picture side to object space, the 8th surface and the 9th surface are the cemented surface of described the 3rd negative lens and described the 4th positive lens, and described the 3rd positive lens 6 has protruding the 11 surface and recessed the 12 surface to picture side to object space.
Wherein above-mentioned all surface is sphere.
Wherein first negative lens 1, second negative lens 2, first positive lens 3, second positive lens and the 3rd positive lens 6 are glass material.
Wherein the refractive index of first negative lens 1 and dispersion range can be at 1.45＜n
1＜1.70,50＜v
1＜75, in this preferred embodiment, adopt the glass material of H-QK1 model, its refractive index and chromatic dispersion are respectively n
1=1.470466, v
1=66.8992.
The refractive index of second negative lens 2 and dispersion range can be at 1.45＜n
2＜1.75,50＜v
2＜65, in this preferred embodiment, adopt the glass material of N-SK14 model, its refractive index and chromatic dispersion are respectively n
2=1.603110, v
2=60.596819.
The refractive index of first positive lens 3 and dispersion range can be at 1.55＜n
3＜1.70,30＜v
3＜50, in this preferred embodiment, adopt the glass material of F6 model, its refractive index and chromatic dispersion are respectively n
3=1.636359, v
3=35.3412.
The refractive index of the 3rd negative lens 4 and dispersion range can be at 1.70＜n
4＜1.85,20＜v
4＜30, in this preferred embodiment, adopt the glass material of N-SF1 model, its refractive index and chromatic dispersion are respectively n
4=1.717360, v
4=29.6201.
The refractive index of the 4th positive lens 5 and dispersion range can be at 1.55＜n
5＜1.70,50＜v
5＜65, in this preferred embodiment, adopt the glass material of H-ZK6 model, its refractive index and chromatic dispersion are respectively n
5=1.612718, v
5=58.578159.
The refractive index of the 3rd positive lens 6 and dispersion range can be at 1.5＜n
6＜1.65,55＜v
6＜70, in this preferred embodiment, adopt the glass material of BK8 model, its refractive index and chromatic dispersion are respectively n
6=1.520152, v
6=63.685744.
In the present embodiment, optical filter 7 is BK7, and refractive index and chromatic dispersion are respectively n=1.5168, v=64.17.In addition, the optical filter known infrared cut-off light filtering films of 7 at least one coating surface one decks (IR-cut Coating) come from Infrared in the object reflection ray with filtering, thereby improve image quality.
This structure all adopts the glass sphere, various monochromatic aberrations and aberration in visible light wave range, have been proofreaied and correct well, compact conformation, the sheet number is few, has good aberration characteristic, effectively aberration correction comprises a last aberration (spherical aberration and axial chromatic aberration) and off-axis aberration (coma, astigmatism and chromatic longitudiinal aberration), and it also has the characteristics of little focal length, the big visual field, high-resolution.With respect to existing process technology, take global face design, adopt the glass mirror design can improve brightness simultaneously, strengthen transmitance, and high temperature resistant, humidity.Good initial configuration design has reduced the eyeglass quantity that needs use, has reduced production cost.
The above only is preferred embodiment of the present invention, not in order to restriction the present invention, all any modifications of being done within the spirit and principles in the present invention, is equal to and replaces and improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. wide-angle lens, it is characterized in that, comprise preceding group, have back group and optical filter of positive light coke with negative power, group comprises first negative lens and second negative lens before described, described back group comprises first positive lens, second positive lens and the 3rd positive lens that is arranged in order from object space to picture side, and described optical filter is positioned at after described the 3rd positive lens.
2. wide-angle lens according to claim 1, it is characterized in that, described second positive lens is a balsaming lens, comprise the 3rd negative lens and the 4th positive lens, described the 3rd negative lens and described the 4th positive lens are bonded together and form protruding lens to picture side, described the 3rd negative lens is near object space, and described the 4th positive lens is near picture side.
3. wide-angle lens according to claim 1 is characterized in that described camera lens also comprises fixed aperture, and described fixed aperture is between described first positive lens and described second positive lens.
4. wide-angle lens according to claim 2, it is characterized in that, it is the recessed second surface to picture side of plane and middle position that described first negative lens has protruding first surface and upper and lower side to object space, be positioned at the top of camera lens, it is recessed the 4th surface to picture side of plane and middle position that described second negative lens has recessed the 3rd surface and upper and lower side to object space, described first positive lens has protruding the 5th surface and the 6th surface to object space, described the 6th surface is the plane, described the 3rd negative lens has protruding the 7th surface and recessed the 8th surface to picture side to object space, described the 4th positive lens has protruding the 9th surface and protruding the tenth surface to picture side to object space, the 8th surface and the 9th surface are the cemented surface of described the 3rd negative lens and described the 4th positive lens, and described the 3rd positive lens has protruding the 11 surface and recessed the 12 surface to picture side to object space.
5. wide-angle lens according to claim 4 is characterized in that all surface is sphere.
6. wide-angle lens according to claim 1 is characterized in that, described first negative lens, second negative lens, first positive lens, second positive lens and the 3rd positive lens are glass material.
7. lens assembly of endoscope according to claim 2 is characterized in that: refractive index n 1 scope of described first negative lens is 1.45＜n
1＜1.70, chromatic dispersion v1 scope is 50＜v
1＜75; Refractive index n 2 scopes of described second negative lens are 1.45＜n
2＜1.75, chromatic dispersion v2 scope is 50＜v
2＜65; Refractive index n 3 scopes of described first positive lens are 1.55＜n
3＜1.70, chromatic dispersion v3 scope is 30＜v
3＜50; Refractive index n 4 scopes of described the 3rd negative lens are 1.70＜n
4＜1.85, chromatic dispersion v4 scope is 20＜v
4＜30; Refractive index n 5 scopes of described the 4th positive lens are 1.55＜n
5＜1.70, chromatic dispersion v5 scope is 50＜v
5＜65; Refractive index n 6 scopes of described the 3rd positive lens are 1.5＜n
6＜1.65, chromatic dispersion v6 scope is 55＜v
6＜70.
8. wide-angle lens according to claim 1 is characterized in that, at least one coating surface of described optical filter has the IR-cut filter membrane.
9. wide-angle lens according to claim 7 is characterized in that, the refractive index of described first negative lens is 1.470466, and chromatic dispersion is 66.8992; The refractive index of described second negative lens is 1.603110, and chromatic dispersion is 60.596819; The refractive index of described first positive lens is 1.636359, and chromatic dispersion is v
3=35.3412; The refractive index of described the 3rd negative lens is 1.717360, and chromatic dispersion is 29.6201; The refractive index of described the 4th positive lens is 1.612718, and chromatic dispersion is 58.578159; The refractive index of described the 3rd positive lens is 1.520152, and chromatic dispersion is 63.685744.
10. a video camera is characterized in that, comprising: as any described wide-angle lens of claim 1 to 9.
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| CN2008102416891A CN101762866B (en) | 2008-12-25 | 2008-12-25 | Wide-angle lens and camera |
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|---|---|---|---|
| CN2008102416891A CN101762866B (en) | 2008-12-25 | 2008-12-25 | Wide-angle lens and camera |
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| CN101762866B CN101762866B (en) | 2012-05-23 |
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| CN102819084A (en) * | 2012-08-27 | 2012-12-12 | 福建福光数码科技有限公司 | High-speed pick-up lens |
| CN103076668A (en) * | 2013-01-11 | 2013-05-01 | 哈尔滨工业大学 | High-resolution, high-illumination and economical optical system shared day and night |
| CN106483641A (en) * | 2015-08-24 | 2017-03-08 | 富士胶片株式会社 | Imaging lens system and camera head |
| CN106483634A (en) * | 2015-08-24 | 2017-03-08 | 富士胶片株式会社 | Imaging lens system and camera head |
| CN108761744A (en) * | 2018-07-16 | 2018-11-06 | 北京未来橙网络科技有限公司 | Bugeye lens |
| CN108873258A (en) * | 2018-07-17 | 2018-11-23 | 莆田学院 | A kind of ultra-wide angle, large aperture FISH EYE LENS OPTICS system |
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| CN111722372A (en) * | 2020-07-31 | 2020-09-29 | 深圳融合光学科技有限公司 | Black light-level day and night dual-purpose large-pass light fixed-focus lens and its working method |
| CN111796396A (en) * | 2015-12-24 | 2020-10-20 | 宁波舜宇车载光学技术有限公司 | Optical imaging lens and lens group thereof |
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| CN2109580U (en) * | 1991-12-29 | 1992-07-08 | 中国科学院西安光学精密机械研究所 | Wide-angle optical lens |
| CN1164033A (en) * | 1996-03-29 | 1997-11-05 | 三星航空产业株式会社 | Wide-angle photographic lens system |
| CN200983032Y (en) * | 2005-07-07 | 2007-11-28 | 福建省光学技术研究所 | Ultra-extensive angle camera lens |
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- 2008-12-25 CN CN2008102416891A patent/CN101762866B/en not_active Expired - Fee Related
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102819084A (en) * | 2012-08-27 | 2012-12-12 | 福建福光数码科技有限公司 | High-speed pick-up lens |
| CN102819084B (en) * | 2012-08-27 | 2016-01-20 | 福建福光股份有限公司 | High-speed camera camera lens |
| CN103076668A (en) * | 2013-01-11 | 2013-05-01 | 哈尔滨工业大学 | High-resolution, high-illumination and economical optical system shared day and night |
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