CN206920688U - A kind of large aperture, the big angle of visual field, the optical lens of mega pixel - Google Patents
A kind of large aperture, the big angle of visual field, the optical lens of mega pixel Download PDFInfo
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- CN206920688U CN206920688U CN201720684137.2U CN201720684137U CN206920688U CN 206920688 U CN206920688 U CN 206920688U CN 201720684137 U CN201720684137 U CN 201720684137U CN 206920688 U CN206920688 U CN 206920688U
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Abstract
It the utility model is related to optical image technology field, a kind of large aperture is disclosed, the big angle of visual field, the optical lens of mega pixel, the first lens are set gradually from object plane to image planes along optical axis direction, second lens, 3rd lens, 4th lens, 5th lens and the 6th lens, first lens are negative focal length meniscus shaped lens, it is convex surface facing object plane, second lens are the lenticular lens of positive focal length, 3rd lens are positive focal length meniscus shaped lens, its concave surface is towards object plane, 4th lens are negative focal length double concave lens, 5th lens are positive focal length meniscus shaped lens, its concave surface is towards object plane, 6th lens are positive focal length convexo-plane lens, it is convex surface facing object plane.By focal length and the distribution of distributing each lens rationally, so that the utility model camera lens picture parsing power reaches mega pixel, F numbers reach 2.2, full filed angle reaches 70 °, and barrel distortion is less than 12%, and the requirement of 1/2.7 inch of image height can be met, therefore with the characteristics of aperture is big, the angle of visual field is big, image quality is clear.
Description
Technical field
Optical image technology field is the utility model is related to, more particularly to a kind of large aperture, the big angle of visual field, mega pixel
Optical lens.
Background technology
With the development of safety monitoring industry, people to the quality of monitoring information and the requirement more and more higher of monitoring range,
At present indoors, hall, the place of the fixed range such as traffic block port monitor in real time the camera lens resolutions used it is low, as matter
Difference, visual field are small, it is few to obtain information content, and it is also larger to distort, and real scene can not be presented authentic and validly for shooting picture.As specially
A kind of pick-up lens of large aperture disclosed in sharp document CN204166188U, it uses 6 pieces of eyeglasses, wherein there is two groups of gluing mirrors
Piece, it is higher using the camera lens cost of this structure, and the angle of view very little, it is difficult to obtain the huge information of big visual field camera lens
Amount.
Therefore, it is necessary to a kind of more preferable optical lens is designed, to solve the above problems.
Utility model content
The problem of existing for prior art, the utility model provide a kind of large aperture, the big angle of visual field, the light of mega pixel
Camera lens is learned, the optical lens realizes height as matter, high-resolution, large aperture imaging, can meet wide-angle simultaneously and distort small
It is required that and 1/2.7 inch of image height requirement can be met, in the real-time monitoring in fixed range place have well development before
Scape.
To achieve these goals, the utility model adopts the following technical scheme that：
A kind of large aperture, the big angle of visual field, the optical lens of mega pixel, including along optical axis from object plane to image planes sequentially coaxially
The first lens, the second lens, the 3rd lens, the 4th lens, the 5th lens and the 6th lens set；
Described first to the 6th lens are glass spherical lens；
3rd lens and the 4th lens bonding are balsaming lens；
First lens are negative focal length meniscus shaped lens, and, convex surface facing object plane, second lens are that positive focal length is double for it
Convex lens, the 3rd lens are positive focal length meniscus shaped lens, and towards object plane, the 4th lens are that negative focal length is double for its concave surface
Spill lens, the 5th lens are positive focal length meniscus shaped lens, and its concave surface is put down towards object plane, the 6th lens for positive focal length
Convex lens, it is convex surface facing object plane；
It is first lens, second lens, the 3rd lens, the 4th lens, the 5th lens, described
The focal length of 6th lens is respectively f1, f2, f3, f4, f5, f6, is met：
-0.75<f2/f1<- 0.7, -1.45<f5/f1<- 1.25, -1.69<f6/f1<- 1.49, -2.36<f3/f4<-
2.16。
Further, first lens, second lens, the 3rd lens, the 4th lens, the described 5th saturating
Mirror, the abbe number of the 6th lens are respectively v1, v2, v3, v4, v5, v6, are met：
Vd (v2, v4)≤41,47≤vd (v1, v3, v5, v6)≤60.
Further, first lens, second lens, the 3rd lens, the 4th lens, the described 5th saturating
Mirror, the center thickness of the 6th lens are respectively T1, T2, T3, T4, T5, T6, and the effective focal length of the optical lens is EFL,
Back focal length is BFL, and the optical lens overall length is TTL, is met：
0.7<T2/T1<0.8,0.8<T3/T1<0.9,0.2<T4/T1<0.3,0.2<T5/T1<0.3,1<T6/T1<1.1
0.23<EFL/TTL<0.25, BFL>5.5mm, 0.23<BFL/TTL<0.26.
Further, the effective focal length EFL=5.58mm of the optical lens, back focal length BFL=5.7207mm, optical lens
Overall length TTL=23.1615mm, then aperture F numbers F.NO=2.2, FOV=70 ° of visual field.
Further, it is provided with diaphragm between second lens and the 3rd lens.
The beneficial effects of the utility model：
The utility model uses six-element lens, is advantageous to the miniaturization of camera lens overall volume；First to the 6th equal position ball of lens
Surface glass lens, reduce lens difficulty of processing so that the utility model optical lens stable performance, good quanlity, and meet
The requirement of 1/2.7 inch of image height；The aperture F number F.NO=2.2 of the utility model optical lens, have large aperture so that
It is big to reach the luminous flux of sensitive chip, picture brightness is high, and peripheral field illumination is more than 50% relative to central vision；This practicality
FOV=70 ° of optical lenses full filed, barrel distortion are controlled within 12%, have a wide-angle lens feature, at the same distortion compared with
It is small, the wider field range of monitoring that can be authentic and valid.
Brief description of the drawings
Fig. 1 is the structural representation of the utility model optical lens；
Fig. 2 is the optical transfer function figure of each visual field of the utility model optical lens；
Fig. 3 is the hot spot figure of the utility model optical lens；
Fig. 4 is chromaticity difference diagram on the utility model optical lens axle；
Fig. 5 is the utility model optical lens chromatic longitudiinal aberration figure；
In Fig. 1, the 1-the first lens, the 2-the second lens, the 3-the three lens, the 4-the four lens, the 5-the five lens, 6-
6th lens.
Embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the embodiment of the utility model is carried out
Clearly and completely describing, it is clear that described embodiment is only part of the embodiment of the present utility model, rather than all
Embodiment.Based on the embodiment in the utility model, those of ordinary skill in the art are not making creative work premise
Lower obtained every other embodiment, belong to the scope of the utility model protection.
Such as Fig. 1, the utility model provides a kind of large aperture, the big angle of visual field, the optical lens of mega pixel, including along optical axis
The first lens 1 for sequentially coaxially being set from object plane to image planes, the second lens 2, the 3rd lens 3, the 4th lens 4, the 5th lens 5 and
6th lens 6.The utility model is advantageous to camera lens overall volume Miniaturization Design only with six-element lens.
First to the 6th lens use spherical glass lens, reduce difficulty of processing so that the utility model optical frames
Head stable performance, good quanlity, and meet the requirement of 1/2.7 inch of image height.
3rd lens 3 and the 4th lens 4 bonding are balsaming lens.
First lens 1 are negative focal length meniscus shaped lens, and it is convex surface facing object plane；Second lens 2 are that positive focal length is lenticular
Mirror；3rd lens 3 are positive focal length meniscus shaped lens, and its concave surface is towards object plane；Light is provided between 3rd lens 3 and the second lens 2
Door screen；4th lens 4 are negative focal length double concave lens；5th lens 5 are positive focal length meniscus shaped lens, and its concave surface is towards object plane；The
Six lens 6 are positive focal length convexo-plane lens, and it is convex surface facing object plane.
First lens 1, the second lens 2, the 3rd lens 3, the 4th lens 4, the 5th lens 5, the focal length difference of the 6th lens 6
For f1, f2, f3, f4, f5, f6, lens optical back focal length is BFL, and lens optical overall length is TTL, is met：
-0.75<f2/f1<- 0.7, -1.45<f5/f1<- 1.25, -1.69<f6/f1<- 1.49, -2.36<f3/f4<-
2.16 BFL>5.5mm, 0.23<BFL/TTL<0.26.
First lens 1, the second lens 2, the 3rd lens 3, the 4th lens 4, the 5th lens 5, the abbe number of the 6th lens 6
Respectively v1, v2, v3, v4, v5, v6, meet：
Vd (v2, v4)≤41,47≤vd (v1, v3, v5, v6)≤60.
First lens 1, the second lens 2, the 3rd lens 3, the 4th lens 4, the 5th lens 5, the center thickness of the 6th lens 6
Respectively T1, T2, T3, T4, T5, T6, the effective focal length of optical lens are EFL, back focal length BFL, and optical lens overall length is
TTL, meet：
0.7<T2/T1<0.8,0.8<T3/T1<0.9,0.2<T4/T1<0.3,0.2<T5/T1<0.3,1<T6/T1<1.1
0.23<EFL/TTL<0.25, BFL>5.5mm, 0.23<BFL/TTL<0.26.
The utility model lens aperture F number F.NO=2.2, have large aperture, so as to get and the luminous flux up to sensitive chip is big,
Picture brightness is high, and peripheral field illumination is more than 50% relative to central vision.Visual field is FOV, is optimized by the utility model
Configuration, FOV=70 ° of full filed, barrel distortion are controlled within 12%, the wider field range of monitoring that can be authentic and valid.
It is the parameter of a wherein embodiment for the utility model optical lens below, wherein f is the utility model camera lens
Focal length along optical axis direction from object plane to image planes S1 is the first lens 1 towards the surface of object plane, and S2 is the first lens 1 towards image planes
Surface, S3 be the second lens 2 towards the surface of object plane, S4 be the second lens 2 towards the surface of image planes, S5 is diaphragm face, S6
It is the 3rd lens 3 towards the surface of object plane, S7 is the 3rd lens 3 and the glued surfaces of the 4th lens 4, and S8 is the direction of the 4th lens 4
The surface of image planes, S9 be the 5th lens 5 towards the surface of object plane, S10 be the 5th lens 5 towards the surface of image planes, S11 is the 6th
For lens 6 towards the surface of object plane, S12 is the 6th lens 6 towards the surface of image planes.
As shown in Figures 1 to 5, optical lens focal length f=5.58mm, aperture F.NO=2.2, FOV=70 ° of full filed, after
Focal length BFL=5.7207mm, camera lens overall length TTL=23.1615mm, each lens surface, R value (units：Mm), thickness (unit：
Mm) and its material is as shown in the table：
The utility model optical lens picture parsing power reaches mega pixel, and aperture F numbers reach 2.2, and full filed angle reaches
70 °, and barrel distortion is less than 12%, and the requirement of 1/2.7 inch of image height can be met, in the real-time monitoring in fixed range place
With good development prospect.Therefore, the utility model camera lens has the characteristics of aperture is big, the angle of visual field is big, image quality is clear.
Above example is only to illustrate the technical solution of the utility model and unrestricted, although with reference to preferred embodiment pair
The utility model is described in detail, it will be appreciated by those skilled in the art that can enter to the technical solution of the utility model
Row modification or equivalent substitution, without departing from the objective and scope of the technical program, it all should cover in power of the present utility model
In sharp claimed range.
Claims (5)
1. a kind of large aperture, the big angle of visual field, the optical lens of mega pixel, it is characterised in that including：Along optical axis from object plane to picture
The first lens, the second lens, the 3rd lens, the 4th lens, the 5th lens and the 6th lens that face is sequentially coaxially set；Described
One to the 6th lens are glass spherical lens；3rd lens and the 4th lens bonding are balsaming lens；Described
One lens are negative focal length meniscus shaped lens, and, convex surface facing object plane, second lens are the lenticular lens of positive focal length for it, described
Three lens are positive focal length meniscus shaped lens, and towards object plane, the 4th lens are negative focal length double concave lens for its concave surface, described
Five lens are positive focal length meniscus shaped lens, and its concave surface is towards object plane, and the 6th lens are positive focal length convexo-plane lens, its convex surface
Towards object plane；First lens, second lens, the 3rd lens, the 4th lens, the 5th lens, institute
The focal length for stating the 6th lens is respectively f1, f2, f3, f4, f5, f6, is met：-0.75<f2/f1<- 0.7, -1.45<f5/f1<-
1.25, -1.69<f6/f1<- 1.49, -2.36<f3/f4<-2.16.
2. large aperture according to claim 1, the big angle of visual field, the optical lens of mega pixel, it is characterised in that：Described
The dispersion of one lens, second lens, the 3rd lens, the 4th lens, the 5th lens, the 6th lens
Coefficient is respectively v1, v2, v3, v4, v5, v6, is met：
Vd (v2, v4)≤41,47≤vd (v1, v3, v5, v6)≤60.
3. large aperture according to claim 1, the big angle of visual field, the optical lens of mega pixel, it is characterised in that：Described
One lens, second lens, the 3rd lens, the 4th lens, the 5th lens, the center of the 6th lens
Thickness is respectively T1, T2, T3, T4, T5, T6, and the effective focal length of the optical lens is EFL, back focal length BFL, the optics
Camera lens overall length is TTL, is met：
0.7<T2/T1<0.8,0.8<T3/T1<0.9,0.2<T4/T1<0.3,0.2<T5/T1<0.3,1<T6/T1<1.1,0.23<
EFL/TTL<0.25, BFL>5.5mm, 0.23<BFL/TTL<0.26.
4. large aperture according to claim 3, the big angle of visual field, the optical lens of mega pixel, it is characterised in that：The light
Effective focal length EFL=5.58mm, back focal length BFL=5.7207mm, the optical lens overall length TTL=23.1615mm of camera lens are learned, then
Aperture F number F.NO=2.2, FOV=70 ° of visual field.
5. large aperture according to claim 1, the big angle of visual field, the optical lens of mega pixel, it is characterised in that：Described
Diaphragm is provided between two lens and the 3rd lens.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720684137.2U CN206920688U (en) | 2017-06-13 | 2017-06-13 | A kind of large aperture, the big angle of visual field, the optical lens of mega pixel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720684137.2U CN206920688U (en) | 2017-06-13 | 2017-06-13 | A kind of large aperture, the big angle of visual field, the optical lens of mega pixel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206920688U true CN206920688U (en) | 2018-01-23 |
Family
ID=61313510
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720684137.2U Expired - Fee Related CN206920688U (en) | 2017-06-13 | 2017-06-13 | A kind of large aperture, the big angle of visual field, the optical lens of mega pixel |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206920688U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111880291A (en) * | 2020-09-28 | 2020-11-03 | 宁波永新光学股份有限公司 | Six-piece type vehicle-mounted optical imaging system |
| CN113031190A (en) * | 2021-03-10 | 2021-06-25 | 协益电子（苏州）有限公司 | Vehicle-mounted monitoring optical lens |
| CN115407487A (en) * | 2022-08-25 | 2022-11-29 | 嘉兴中润光学科技股份有限公司 | Vehicle-mounted lens and imaging device |
-
2017
- 2017-06-13 CN CN201720684137.2U patent/CN206920688U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111880291A (en) * | 2020-09-28 | 2020-11-03 | 宁波永新光学股份有限公司 | Six-piece type vehicle-mounted optical imaging system |
| CN111880291B (en) * | 2020-09-28 | 2020-12-08 | 宁波永新光学股份有限公司 | Six-piece type vehicle-mounted optical imaging system |
| CN113031190A (en) * | 2021-03-10 | 2021-06-25 | 协益电子（苏州）有限公司 | Vehicle-mounted monitoring optical lens |
| CN113031190B (en) * | 2021-03-10 | 2023-11-10 | 协益电子（苏州）有限公司 | Vehicle-mounted monitoring optical lens |
| CN115407487A (en) * | 2022-08-25 | 2022-11-29 | 嘉兴中润光学科技股份有限公司 | Vehicle-mounted lens and imaging device |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180123 Termination date: 20190613 |
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| CF01 | Termination of patent right due to non-payment of annual fee |