CN207689737U - The low distortion industrial lens of big target surface - Google Patents
The low distortion industrial lens of big target surface Download PDFInfo
- Publication number
- CN207689737U CN207689737U CN201721862007.XU CN201721862007U CN207689737U CN 207689737 U CN207689737 U CN 207689737U CN 201721862007 U CN201721862007 U CN 201721862007U CN 207689737 U CN207689737 U CN 207689737U
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- China
- Prior art keywords
- lens
- positive light
- target surface
- low distortion
- meniscus
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Abstract
The utility model is related to a kind of low distortion industrial lens of big target surface,Include the lens group A of the negative power set gradually along light incident direction,Aperture diaphragm,The lens group B of positive light coke,Lens group A is equipped with the meniscus lens A of positive light coke successively from the object side to the image side,The meniscus lens B of negative power,The meniscus lens C of negative power,The meniscus lens D of negative power,The meniscus lens E of negative power,The meniscus lens F of positive light coke,Lens group B is equipped with the biconvex lens A of positive light coke successively from the object side to the image side,The biconvex lens B of positive light coke,The biconcave lens C of negative power,The planoconvex spotlight D of positive light coke,The biconvex lens E of positive light coke,The tablet optical filter of zero focal power is set between biconvex lens E and image planes,The utility model lens construction is compact,Target surface is 2/3inch,Relative aperture is 1.8,The transmission function of full filed is more than 0.3 at 200lp/mm,Image deformation is less than 0.5%,It is compact-sized,It distorts low,High resolution.
Description
Technical field
The utility model is related to ultraviolet optics technical field of imaging, and in particular to a kind of low distortion industrial lens of big target surface.
Background technology
With the rapid development of industrial technology, industrial lens be widely used in the manufacturing, quality testing, medicine,
The fields such as scientific research." eyes " of the industrial lens as automatic machinery, thus camera lens occupies in the development of industrial technology
This critical role.It is very necessary to design a kind of demand of the industrial lens of the low distortion of big target surface to market.
Invention content
The purpose of this utility model is to provide a kind of low distortion industrial lens of big target surface.
The technical solution of the utility model is, a kind of low distortion industrial lens of big target surface, including along light incident direction
The lens group A of the negative power set gradually, the lens group B of aperture diaphragm, positive light coke, the lens group A is from object space to picture
Fang Yici is equipped with the meniscus lens A of positive light coke, the meniscus lens B of negative power, the meniscus lens C of negative power, negative light focus
The meniscus lens F of the meniscus lens D of degree, the meniscus lens E of negative power, positive light coke, the lens group B is from object space to picture
Fang Yici is equipped with the biconvex lens A of positive light coke, the biconvex lens B of positive light coke, the biconcave lens C of negative power, positive light focus
The planoconvex spotlight D of degree, the biconvex lens E of positive light coke.
Further, the tablet optical filter of zero focal power is set between the biconvex lens E and image planes.
Further, the meniscus lens E, meniscus lens F are glued mutually constitutes balsaming lens TL1, biconvex lens B, double
Concavees lens C is glued mutually to constitute balsaming lens TL2.
Further, the aperture diaphragm value FN0 is FN0≤1.8.
Further, each lens in lens group A, lens group B are spherical glass.
Further, the focal length EFL and rear cut-off distance BFL of the camera lens meet following condition：0.5<EFL/BFL<0.7.
Further, the meniscus lens A meets condition in object plane side radius of curvature R1 and in the radius R2 of image planes side：
0.3<|R1/R2|<0.4；The biconvex lens E meets condition in object plane side radius of curvature R1 and in the radius R2 of image planes side：0.3
<|R1/R2|<0.4 。
Further, the meniscus lens A focal lengths EF1 and the focal length EFL of whole system meet condition：0.1<|EFL/EF1
|<0.2。
Further, the effective focal length of the camera lens is 8mm, and relative value aperture F/1.8, maximum caliber is less than 34mm, light
The distance that overall length is meniscus lens A to biconvex lens E is learned, distance is 68mm.
Compared with prior art, the utility model has the advantages that：Lens construction is compact, target surface 2/3inch,
Relative aperture is 1.8, and the transmission function of full filed is more than 0.3 at 200lp/mm, and image deformation is less than 0.5%, compact-sized,
Distort low, high resolution, can meet the needs of industrial market.
Further details of elaboration is made to the utility model with reference to the accompanying drawings and detailed description.
Description of the drawings
Fig. 1 is the optical structure chart of the utility model；
Transmission function MTF curve graphs in Fig. 2 Fig. 1 on each view field image surface of optical lens；
Fig. 3 is the curvature of field and distortion figure for being optical lens in Fig. 1.
In figure：
1- meniscus lens A；2- meniscus lens B；3- meniscus lens C；4- meniscus lens D；5- meniscus lens E；6- bent moons are saturating
Mirror F；7- biconvex lens A；8- biconvex lens B；9- biconcave lens C；10- planoconvex spotlights D；11- biconvex lens E；12- aperture lights
Door screen；13- image planes.
Specific implementation mode
As shown in Figure 1, a kind of low distortion industrial lens of big target surface, include the negative light set gradually along light incident direction
The lens group A of focal power, aperture diaphragm, positive light coke lens group B, the lens group A be equipped with positive light successively from the object side to the image side
The meniscus lens A of focal power, the meniscus lens B of negative power, the meniscus lens C of negative power, negative power meniscus lens D,
The meniscus lens E of negative power, the meniscus lens F, the lens group B of positive light coke are equipped with positive light successively from the object side to the image side
The biconvex lens A of focal power, the biconvex lens B of positive light coke, the biconcave lens C of negative power, positive light coke planoconvex spotlight D,
The biconvex lens E of positive light coke.
In the present embodiment, the tablet optical filter of zero focal power is set between the biconvex lens E and image planes.
In the present embodiment, the meniscus lens E, meniscus lens F are glued mutually constitutes balsaming lens TL1, biconvex lens
B, biconcave lens C is glued mutually constitutes balsaming lens TL2.
In the present embodiment, the aperture diaphragm value FN0 is FN0≤1.8.
In the present embodiment, each lens in lens group A, lens group B are spherical glass, are effectively controlled production
Cost and technology difficulty.
In the present embodiment, the focal length EFL and rear cut-off distance BFL of the camera lens meet following condition：0.5<EFL/BFL<
0.7。
In the present embodiment, the meniscus lens A meets item in object plane side radius of curvature R1 and in the radius R2 of image planes side
Part：0.3<|R1/R2|<0.4；The biconvex lens E meets condition in object plane side radius of curvature R1 and in the radius R2 of image planes side：
0.3<|R1/R2|<0.4 。
In the present embodiment, the meniscus lens A focal lengths EF1 and the focal length EFL of whole system meet condition：0.1<|
EFL/EF1|<0.2。
In the present embodiment, the effective focal length of the camera lens is 8mm, relative value aperture F/1.8, and maximum caliber is less than
34mm, optics overall length are the distance of meniscus lens A to biconvex lens E, and distance is 68mm.
In Fig. 2, the MTF values of each visual field are all higher than 0.3 at 200lp/mm, and curve smoothing, compact, illustrate the mirror
Head imaging clearly, uniformly, system has good image quality in all band full filed.
It can be seen that the shot field curvature is less than 0.05mm in Fig. 3, distortion is less than 0.5%, the low distortion low distortion of system, energy
Enough make the result measured more acurrate.
In the present embodiment, optical system data such as following table：
The above is only the preferred embodiment of the present invention, it is all done according to present utility model application the scope of the claims it is equal
Deng variation and modification, it should all belong to the covering scope of the utility model.
Claims (9)
1. a kind of low distortion industrial lens of big target surface, it is characterised in that：Include the negative light set gradually along light incident direction
The lens group A of focal power, aperture diaphragm, positive light coke lens group B, the lens group A be equipped with positive light successively from the object side to the image side
The meniscus lens A of focal power, the meniscus lens B of negative power, the meniscus lens C of negative power, negative power meniscus lens D,
The meniscus lens E of negative power, the meniscus lens F, the lens group B of positive light coke are equipped with positive light successively from the object side to the image side
The biconvex lens A of focal power, the biconvex lens B of positive light coke, the biconcave lens C of negative power, positive light coke planoconvex spotlight D,
The biconvex lens E of positive light coke.
2. the low distortion industrial lens of big target surface according to claim 1, it is characterised in that：The biconvex lens E and image planes
Between the tablet optical filter of zero focal power is set.
3. the low distortion industrial lens of big target surface according to claim 1, it is characterised in that：The meniscus lens E, bent moon are saturating
Mirror F is glued mutually to constitute balsaming lens TL1, and biconvex lens B, biconcave lens C are glued mutually to constitute balsaming lens TL2.
4. the low distortion industrial lens of big target surface according to claim 1, it is characterised in that：The aperture diaphragm value FN0 is
FN0≤1.8。
5. the low distortion industrial lens of big target surface according to claim 1, it is characterised in that：In lens group A, lens group B
Each lens are spherical glass.
6. the low distortion industrial lens of big target surface according to claim 1, it is characterised in that：The focal length EFL of the camera lens with
Rear cut-off distance BFL meets following condition：0.5<EFL/BFL<0.7.
7. the low distortion industrial lens of big target surface according to claim 1, it is characterised in that：The meniscus lens A is in object plane
Side radius of curvature R1 in the radius R2 of image planes side meet condition：0.3<|R1/R2|<0.4；The biconvex lens E is in object plane side
Radius of curvature R 1 in the radius R2 of image planes side meet condition：0.3<|R1/R2|<0.4 .
8. the low distortion industrial lens of big target surface according to claim 1, it is characterised in that：The meniscus lens A focal lengths EF1
Meet condition with the focal length EFL of whole system：0.1<|EFL/EF1|<0.2.
9. the low distortion industrial lens of big target surface according to claim 1, it is characterised in that：The effective focal length of the camera lens is
8mm, relative value aperture F/1.8, maximum caliber are less than 34mm, and optics overall length is the distance of meniscus lens A to biconvex lens E,
Its distance is 68mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721862007.XU CN207689737U (en) | 2017-12-27 | 2017-12-27 | The low distortion industrial lens of big target surface |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721862007.XU CN207689737U (en) | 2017-12-27 | 2017-12-27 | The low distortion industrial lens of big target surface |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207689737U true CN207689737U (en) | 2018-08-03 |
Family
ID=62992293
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721862007.XU Active CN207689737U (en) | 2017-12-27 | 2017-12-27 | The low distortion industrial lens of big target surface |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207689737U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110501802A (en) * | 2019-08-13 | 2019-11-26 | 苏州源卓光电科技有限公司 | A kind of doubly telecentric exposure cameras |
| CN114924396A (en) * | 2022-05-20 | 2022-08-19 | 南京华群光电技术有限公司 | Large-target-surface double-telecentric lens |
-
2017
- 2017-12-27 CN CN201721862007.XU patent/CN207689737U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110501802A (en) * | 2019-08-13 | 2019-11-26 | 苏州源卓光电科技有限公司 | A kind of doubly telecentric exposure cameras |
| CN114924396A (en) * | 2022-05-20 | 2022-08-19 | 南京华群光电技术有限公司 | Large-target-surface double-telecentric lens |
| CN114924396B (en) * | 2022-05-20 | 2024-03-22 | 南京华群光电技术有限公司 | Large target surface double telecentric lens |
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