CN207037200U - A kind of optical lens - Google Patents
A kind of optical lens Download PDFInfo
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- CN207037200U CN207037200U CN201720940946.5U CN201720940946U CN207037200U CN 207037200 U CN207037200 U CN 207037200U CN 201720940946 U CN201720940946 U CN 201720940946U CN 207037200 U CN207037200 U CN 207037200U
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Abstract
It the utility model is related to optical field, a kind of more particularly to optical lens, the optical system being arranged in lens barrel, the focal power that the optical system includes setting gradually from thing side to image side surface is that negative front lens group, iris diaphgram and focal power are positive rear lens group；The front lens group includes positive meniscus lens, diverging meniscus lens, the first biconcave lens and the first biconvex lens set gradually from thing side to image side surface；The second biconvex lens and the second biconcave lens, the 3rd biconcave lens and the 3rd biconvex lens and the focal power that the rear lens group includes setting gradually from thing side to image side surface are the 5th positive lens.The utility model realizes the big angle of visual field of optical system, low the characteristics of distorting, be compact-sized using the combination of the spherical optics eyeglass of seven groups nine, meets the application demand on big target surface, high-resolution NI Vision Builder for Automated Inspection.
Description
Technical field
It the utility model is related to optical field, more particularly to a kind of optical lens.
Background technology
In recent years, as the fast development of microelectronics industry, high-resolution, the NI Vision Builder for Automated Inspection of high processing rate are continuous
It is born, this proposes new requirement to matched optical lens.And for domestic existing optical lens, can not also
Meets the needs of high-end product.It would therefore be highly desirable to a kind of can meet big visual field, low distortion, the optics of high-resolution requirement simultaneously
Camera lens.
Utility model content
The defects of in order to overcome above-mentioned prior art, technical problem to be solved in the utility model are：There is provided a kind of big
Visual field, low distortion, the optical lens of high-resolution requirement.
In order to solve the above-mentioned technical problem, the technical solution adopted in the utility model is：
A kind of optical lens is provided, the optical system being arranged in lens barrel, the optical system is included from thing side to picture
The focal power that side is set gradually is that negative front lens group, iris diaphgram and focal power are positive rear lens group；
The front lens group include set gradually from thing side to image side surface positive meniscus lens, diverging meniscus lens, first
Biconcave lens and the first biconvex lens；
The rear lens group include the second biconvex lens for being set gradually from thing side to image side surface and the second biconcave lens,
3rd biconcave lens and the 3rd biconvex lens and focal power are the 5th positive lens.
In an alternative embodiment, second biconvex lens and the second biconcave lens are close glued glued saturating to form first
Microscope group, and the 3rd biconcave lens and the 3rd biconvex lens are close glued to form the second balsaming lens group.
In an alternative embodiment, the angle of visual field of the optical system is 68 ° -78 °.
In an alternative embodiment, the optical lens meets 0.65<Y/EFL, wherein, y is half picture of the optical system
Height, EFL are the focal length value of the optical system.
In an alternative embodiment, the maximum clear aperature of the optical lens meets Fno≤3.0, and wherein Fno is the light
The F numbers of system.
In an alternative embodiment, the rear cut-off distance BFL of the optical system meets BFL/EFL>1.03, wherein EFL is described
The focal length value of optical system.
In an alternative embodiment, the overall length TTL of the optical system meets TTL/EFL>2.58, wherein EFL are the light
The focal length value of system.
In an alternative embodiment, the absolute value of the focal length of the front lens group of the optical system | FA| meet 2.3<|FA|/
EFL<2.8, wherein EFL are the focal length value of the optical system；
The focal length value F of the positive meniscus lensA1Meet 2.30<|FA1|/EFL<3.00, wherein EFL are the optical system
Focal length value；
The focal length value F of the diverging meniscus lensA2Meet 1.10<|FA2|/EFL<1.70, wherein EFL are the optical system
Focal length value；
The focal length value F of first biconcave lensA3Meet 0.95<|FA3|/EFL<1.65, wherein EFL are the optical system
The focal length value of system；
The focal length value F of first biconvex lensA4Meet 1.36<|FA4|/EFL<2.06, wherein EFL are the optical system
The focal length value of system.
In an alternative embodiment, the absolute value of the focal length of the rear lens group of the optical system | FB| meet 0.65<|FB|/
EFL<1.10, wherein EFL are the focal length value of the optical system；
The combined focal length value F of second biconvex lens and the second biconcave lensB1B2Meet 1.60<|FB1B2|/EFL<
2.40, wherein EFL are the focal length value of the optical system；
The combined focal length value F of 3rd biconcave lens and the 3rd biconvex lensB3B4Meet 11.5<|FB3B4|/EFL<
18.50, wherein EFL are the focal length value of the optical system；
The focal length value F of 5th lensB5Meet 1.11<|FB5|/EFL<1.81, wherein EFL are the optical system
Focal length value.
The beneficial effects of the utility model are：The big angle of visual field of optical system, low distortion, compact-sized is realized, it is full
Application demand of the foot on big target surface, high-resolution NI Vision Builder for Automated Inspection.
Brief description of the drawings
Fig. 1 show a kind of structural representation of optical lens of the utility model embodiment；
Fig. 2 show a kind of index path of optical lens of the utility model embodiment one；
Fig. 3 show a kind of MTF curve figure of optical lens of the utility model embodiment one；
Fig. 4 show a kind of index path of optical lens of the utility model embodiment two；
Fig. 5 show a kind of MTF curve figure of optical lens of the utility model embodiment two；
Label declaration：
A- front lens groups；A1- positive meniscus lens；A2- diverging meniscus lenses；The biconcave lens of A3- first；The lenticulars of A4- first
Mirror；
B- rear lens groups；The biconvex lens of B1- second；The biconcave lens of B2- second；The biconcave lens of B3- the 3rd；B4- the 3rd couple
Convex lens；The lens of B5- the 5th.
Embodiment
For detailed description technology contents of the present utility model, the objects and the effects, below in conjunction with embodiment and match somebody with somebody
Accompanying drawing is closed to be explained.
The design of the utility model most critical is：It is negative by the focal power set gradually from thing side to image side surface
Front lens group, iris diaphgram and focal power are positive rear lens group so that optical lens has the big angle of visual field, low distortion, high score
The characteristics of resolution.
It refer to shown in Fig. 1 to Fig. 5, a kind of optical lens of the utility model offer, the optical system being arranged in lens barrel,
The focal power that the optical system includes setting gradually from thing side to image side surface is negative front lens group A, iris diaphgram and light
Focal power is positive rear lens group B；
The front lens group A include set gradually from thing side to image side surface positive meniscus lens A1, diverging meniscus lens A2,
First biconcave lens A3 and the first biconvex lens A4；
The rear lens group B includes the second biconvex lens B1 set gradually from thing side to image side surface and the second concave-concave is saturating
Mirror B2, the 3rd biconcave lens B3 and the 3rd biconvex lens B4 and focal power are the 5th positive lens B5.
It was found from foregoing description, the beneficial effects of the utility model are：Utilize the spherical optics eyeglasses of seven groups nine
Combination realizes the big angle of visual field of optical system, low the characteristics of distorting, be compact-sized, the ratio of the image height of optical system half and focal length
More than 0.65, the application demand on big target surface, high-resolution NI Vision Builder for Automated Inspection can be met.
Further, the second biconvex lens B1 and the second biconcave lens B2 is close glued to form the first balsaming lens
Group, and the 3rd biconcave lens B3 and the 3rd biconvex lens B4 is close glued to form the second balsaming lens group.
Further, the angle of visual field of the optical system is 68 ° -78 °.
Further, the optical lens meets 0.65<Y/EFL, wherein, y be the optical system half image height, EFL
For the focal length value of the optical system.
Further, the maximum clear aperature of the optical lens meets Fno≤3.0, and wherein Fno is the optical system
F numbers.
Further, the rear cut-off distance BFL of the optical system meets BFL/EFL>1.03, wherein EFL are the optical system
The focal length value of system.
Further, the overall length TTL of the optical system meets TTL/EFL>2.58, wherein EFL are the optical system
Focal length value.
Further, the absolute value of the front lens group A of optical system focal length | FA| meet 2.3<|FA|/EFL<
2.8, wherein EFL are the focal length value of the optical system；
The focal length value F of the positive meniscus lens A1A1Meet 2.30<|FA1|/EFL<3.00, wherein EFL are the optical system
The focal length value of system；
The focal length value F of the diverging meniscus lens A2A2Meet 1.10<|FA2|/EFL<1.70, wherein EFL are the optical system
The focal length value of system；
The focal length value F of the first biconcave lens A3A3Meet 0.95<|FA3|/EFL<1.65, wherein EFL are the optics
The focal length value of system；
The focal length value F of the first biconvex lens A4A4Meet 1.36<|FA4|/EFL<2.06, wherein EFL are the optics
The focal length value of system.
Further, the absolute value of the rear lens group B of optical system focal length | FB| meet 0.65<|FB|/EFL<
1.10, wherein EFL are the focal length value of the optical system；
The second biconvex lens B1 and the second biconcave lens B2 combined focal length value FB1B2Meet 1.60<|FB1B2|/EFL<
2.40, wherein EFL are the focal length value of the optical system；
The combined focal length value F of the 3rd biconcave lens B3 and the 3rd biconvex lens B4B3B4Meet 11.5<|FB3B4|/EFL<
18.50, wherein EFL are the focal length value of the optical system；
The focal length value F of the 5th lens B5B5Meet 1.11<|FB5|/EFL<1.81, wherein EFL are the optical system
Focal length value.
It refer to shown in Fig. 1 to Fig. 5, embodiment one of the present utility model is：
In the present embodiment, optical system data such as following table：
In the present embodiment, the focal length of optical system is 29.4mm.
Tables of data of focusing is as follows：
A kind of optical lens, the optical system being arranged in lens barrel, the optical system are included from thing side to image side surface
The focal power set gradually is that negative front lens group A, iris diaphgram and focal power are positive rear lens group B；
The front lens group A include set gradually from thing side to image side surface positive meniscus lens A1, diverging meniscus lens A2,
First biconcave lens A3 and the first biconvex lens A4；
The rear lens group B includes the second biconvex lens B1 set gradually from thing side to image side surface and the second concave-concave is saturating
Mirror B2, the 3rd biconcave lens B3 and the 3rd biconvex lens B4 and focal power are the 5th positive lens B5.
The second biconvex lens B1 and the second biconcave lens B2 is close glued to form the first balsaming lens group, and the
Three biconcave lens B3 and the 3rd biconvex lens B4 are close glued to form the second balsaming lens group.
In the present embodiment, the maximum clear aperature Fno of camera lens is 2.8, meets Fno<3.0, wherein Fno are optical system
F numbers.
In the present embodiment, the angle of visual field of optical system is 73.2 °.
In the present embodiment, optical system matches with the camera that target surface size is 43mm, half image height y=21.5mm, y/EFL=
0.731, meet 0.65<y/EFL<0.81, wherein, y is half image height of the optical system, and EFL is Jiao of the optical system
Away from value.
In the present embodiment, the rear cut-off distance BFL=33.49-36.45mm, BFL/EFL of optical system numerical value are 1.139-
1.240 meet BFL/EFL>1.03, wherein EFL are the focal length value of the optical system.
In the present embodiment, overall length TTL=80.02, the TTL/EFL=2.72 of optical system, meets TTL/EFL>2.58
Wherein EFL is the focal length value of the optical system.
In the present embodiment, the absolute value of the front lens group A of optical system focal length | FA|=75.55mm, | FA|/EFL=
2.57 meet：2.3<|FA|/EFL<2.8, wherein EFL are the focal length value of the optical system.
In the present embodiment, the absolute value of the rear lens group B of optical system focal length | FB|=26.97mm, | FB|/
EFL=0.92, meet：0.65<|FB|/EFL<1.10, wherein EFL are the focal length value of the optical system.
In the present embodiment, the focal length value F of the positive meniscus lens A1A1=80.00mm, | FA1|/EFL=2.72 is full
Foot：2.30<|FA1|/EFL<3.00, wherein EFL are the focal length value of the optical system.
In the present embodiment, the focal length value F of the diverging meniscus lens A2A2=-42.64mm, | FA2|/EFL=1.45 is full
Foot：1.10<|FA2|/EFL<1.70, wherein EFL are the focal length value of the optical system.
In the present embodiment, the focal length value F of the first biconcave lens A3A3=-38.79mm, | FA3|/EFL=1.32,
Meet：0.95<|FA3|/EFL<1.65, wherein EFL are the focal length value of the optical system.
In the present embodiment, the focal length value F of the first biconvex lens A4A4=50.41mm, | FA4|/EFL=1.71 is full
Foot：1.36<|FA4|/EFL<2.06, wherein EFL are the focal length value of the optical system.
In the present embodiment, the second biconvex lens B1 and the second biconcave lens B2 combined focal length value FB1B2=
60.385mm | FB1B2|/EFL=2.05, meet：1.60<|FB1B2|/EFL<2.40, wherein EFL are Jiao of the optical system
Away from value.
In the present embodiment, the combined focal length value F of the 3rd biconcave lens B3 and the 3rd biconvex lens B4B3B4=
380.21mm | FB3B4|/EFL=12.93, meet：11.5<|FB3B4|/EFL<18.50, wherein EFL are the optical system
Focal length value.
In the present embodiment, the focal length value F of the 5th lens B5B5=42.98mm, | FB5|/EFL=1.46 meets：
1.11<|FB5|/EFL<1.81, wherein EFL are the focal length value of the optical system.
In the present embodiment, the camera lens matches with the camera that target surface is 43mm, within 0.8 visual field, at 40lp/mm
Mtf value is more than 0.3, distortion 3%.
It refer to shown in Fig. 1 to Fig. 5, embodiment two of the present utility model is：
In the present embodiment, optical system data such as following table：
In the present embodiment, the focal length of optical system is 12.00mm.
Tables of data of focusing is as follows：
A kind of optical lens, the optical system being arranged in lens barrel, the optical system are included from thing side to image side surface
The focal power set gradually is that negative front lens group A, iris diaphgram and focal power are positive rear lens group B；
The front lens group A include set gradually from thing side to image side surface positive meniscus lens A1, diverging meniscus lens A2,
First biconcave lens A3 and the first biconvex lens A4；
The rear lens group B includes the second biconvex lens B1 set gradually from thing side to image side surface and the second concave-concave is saturating
Mirror B2, the 3rd biconcave lens B3 and the 3rd biconvex lens B4 and focal power are the 5th positive lens B5.
The second biconvex lens B1 and the second biconcave lens B2 is close glued to form the first balsaming lens group, and the
Three biconcave lens B3 and the 3rd biconvex lens B4 are close glued to form the second balsaming lens group.
In the present embodiment, the maximum clear aperature Fno numbers of camera lens are 2.8, meet Fno<3.0, wherein Fno are optical system
F numbers.
In the present embodiment, the angle of visual field of optical system is 69 °.
In the present embodiment, optical system matches with 1 inch of CCD, half image height y=8mm, y/EFL=0.67, meets
0.65<y/EFL<0.81, wherein, y is half image height of the optical system, and EFL is the focal length value of the optical system.
In the present embodiment, the rear cut-off distance BFL=13.40-14.12mm, BFL/EFL of optical system numerical value are 1.12-
1.18, meet BFL/EFL>1.03, wherein EFL are the focal length value of the optical system.
In the present embodiment, overall length TTL=32.25mm, the TTL/EFL=2.69 of optical system, meets TTL/EFL>
2.58, wherein EFL are the focal length value of the optical system.
In the present embodiment, the absolute value of the front lens group A of optical system focal length | FA|=28.77mm, | FA|/EFL=
2.40 meet：2.3<|FA|/EFL<2.8, wherein EFL are the focal length value of the optical system.
In the present embodiment, the absolute value of the rear lens group B of optical system focal length | FB|=11.13mm, | FB|/
EFL=0.93, meet：0.65<|FB|/EFL<1.10, wherein EFL are the focal length value of the optical system.
In the present embodiment, the focal length value F of the positive meniscus lens A1A1=34.74mm, | FA1|/EFL=2.895 is full
Foot：2.30<|FA1|/EFL<3.00 wherein EFL is the focal length value of the optical system.
In the present embodiment, the focal length value F of the diverging meniscus lens A2A2=-16.68mm, | FA2|/EFL=1.39 is full
Foot：1.10<|FA2|/EFL<1.70, wherein EFL are the focal length value of the optical system.
In the present embodiment, the focal length value F of the first biconcave lens A3A3=-15.27mm, | FA3|/EFL=1.27,
Meet：0.95<|FA3|/EFL<1.65, wherein EFL are the focal length value of the optical system.
In the present embodiment, the focal length value F of the first biconvex lens A4A4=19.15mm, | FA4|/EFL=1.59 is full
Foot：1.36<|FA4|/EFL<2.06, wherein EFL are the focal length value of the optical system.
In the present embodiment, the second biconvex lens B1 and the second biconcave lens B2 combined focal length value FB1B2=
21.74mm | FB1B2|/EFL=1.81, meet：1.60<|FB1B2|/EFL<2.40 wherein EFL is the focal length of the optical system
Value.
In the present embodiment, the combined focal length value F of the 3rd biconcave lens B3 and the 4th biconvex lensB3B4=
219.55mm | FB3B4|/EFL=18.30, meet：11.5<|FB3B4|/EFL<18.50, wherein EFL are the optical system
Focal length value.
In the present embodiment, the focal length value F of the 5th lens B5B5=17.87mm, | FB5|/EFL=1.49 meets：
1.11<|FB5|/EFL<1.81, wherein EFL are the focal length value of the optical system.
In the present embodiment, the camera lens matches with the CCD camera that target surface is 16mm, and full filed mtf value at 90lp/mm is big
In 0.3, distortion is less than 3%.
In summary, the focal power provided by the utility model set gradually along light incident direction is negative front lens
Group, iris diaphgram, focal power are positive rear lens group, realize the big angle of visual field of optical system, low distortion, compact-sized, full
Application demand of the foot on big target surface, high-resolution NI Vision Builder for Automated Inspection.
Embodiment of the present utility model is the foregoing is only, not thereby limits the scope of the claims of the present utility model, it is every
The equivalents made using the utility model specification and accompanying drawing content, or directly or indirectly it is used in the technology neck of correlation
Domain, similarly it is included in scope of patent protection of the present utility model.
Claims (9)
1. a kind of optical lens, it is characterised in that the optical system being arranged in lens barrel, the optical system are included from thing side
It is that negative front lens group, iris diaphgram and focal power are positive rear lens group to the focal power that image side surface is set gradually；
The front lens group includes positive meniscus lens, diverging meniscus lens, the first concave-concave set gradually from thing side to image side surface
Lens and the first biconvex lens；
The rear lens group includes the second biconvex lens and the second biconcave lens, the 3rd set gradually from thing side to image side surface
Biconcave lens and the 3rd biconvex lens and focal power are the 5th positive lens.
2. optical lens according to claim 1, it is characterised in that second biconvex lens and the second biconcave lens are tight
It is close glued to form the first balsaming lens group, and the 3rd biconcave lens and the 3rd biconvex lens are close glued to form the second glue
Close lens group.
3. optical lens according to claim 1, it is characterised in that the angle of visual field of the optical system is 68 ° -78 °.
4. optical lens according to claim 1, it is characterised in that the optical lens meets 0.65<Y/EFL, wherein,
Y is half image height of the optical system, and EFL is the focal length value of the optical system.
5. optical lens according to claim 1, it is characterised in that the maximum clear aperature of the optical lens meets
Fno≤3.0, wherein Fno are the F numbers of the optical system.
6. optical lens according to claim 1, it is characterised in that the rear cut-off distance BFL of the optical system meets BFL/
EFL>1.03, wherein EFL are the focal length value of the optical system.
7. optical lens according to claim 1, it is characterised in that the overall length TTL of the optical system meets TTL/EFL
>2.58, wherein EFL are the focal length value of the optical system.
8. optical lens according to claim 1, it is characterised in that the focal length of the front lens group of the optical system it is exhausted
To value | FA| meet 2.3<|FA|/EFL<2.8, wherein EFL are the focal length value of the optical system；
The focal length value F of the positive meniscus lensA1Meet 2.30<|FA1|/EFL<3.00, wherein EFL are Jiao of the optical system
Away from value；
The focal length value F of the diverging meniscus lensA2Meet 1.10<|FA2|/EFL<1.70, wherein EFL are Jiao of the optical system
Away from value；
The focal length value F of first biconcave lensA3Meet 0.95<|FA3|/EFL<1.65, wherein EFL are the optical system
Focal length value；
The focal length value F of first biconvex lensA4Meet 1.36<|FA4|/EFL<2.06, wherein EFL are the optical system
Focal length value.
9. optical lens according to claim 1, it is characterised in that the focal length of the rear lens group of the optical system it is exhausted
To value | FB| meet 0.65<|FB|/EFL<1.10, wherein EFL are the focal length value of the optical system；
The combined focal length value F of second biconvex lens and the second biconcave lensB1B2Meet 1.60<|FB1B2|/EFL<2.40 its
Middle EFL is the focal length value of the optical system；
The combined focal length value F of 3rd biconcave lens and the 3rd biconvex lensB3B4Meet 11.5<|FB3B4|/EFL<18.50 its
Middle EFL is the focal length value of the optical system；
The focal length value F of 5th lensB5Meet 1.11<|FB5|/EFL<1.81, wherein EFL are the focal length of the optical system
Value.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720940946.5U CN207037200U (en) | 2017-07-31 | 2017-07-31 | A kind of optical lens |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720940946.5U CN207037200U (en) | 2017-07-31 | 2017-07-31 | A kind of optical lens |
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| Publication Number | Publication Date |
|---|---|
| CN207037200U true CN207037200U (en) | 2018-02-23 |
Family
ID=61463421
Family Applications (1)
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|---|---|---|---|
| CN201720940946.5U Active CN207037200U (en) | 2017-07-31 | 2017-07-31 | A kind of optical lens |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108681036A (en) * | 2018-06-20 | 2018-10-19 | 广东奥普特科技股份有限公司 | 35mm is big, and target surface machine vision line sweeps camera lens |
| CN108919460A (en) * | 2018-06-22 | 2018-11-30 | 中国科学院长春光学精密机械与物理研究所 | A kind of optical lens |
| CN110018554A (en) * | 2019-03-15 | 2019-07-16 | 广东奥普特科技股份有限公司 | A kind of wide-angle machine visual lens |
-
2017
- 2017-07-31 CN CN201720940946.5U patent/CN207037200U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108681036A (en) * | 2018-06-20 | 2018-10-19 | 广东奥普特科技股份有限公司 | 35mm is big, and target surface machine vision line sweeps camera lens |
| CN108681036B (en) * | 2018-06-20 | 2023-08-22 | 广东奥普特科技股份有限公司 | 35mm large target surface machine vision line scanning lens |
| CN108919460A (en) * | 2018-06-22 | 2018-11-30 | 中国科学院长春光学精密机械与物理研究所 | A kind of optical lens |
| CN110018554A (en) * | 2019-03-15 | 2019-07-16 | 广东奥普特科技股份有限公司 | A kind of wide-angle machine visual lens |
| CN110018554B (en) * | 2019-03-15 | 2024-03-26 | 广东奥普特科技股份有限公司 | Wide-angle machine vision lens |
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