CN204719317U - Day and night high definition fish eye lens - Google Patents
Day and night high definition fish eye lens Download PDFInfo
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- CN204719317U CN204719317U CN201520407237.1U CN201520407237U CN204719317U CN 204719317 U CN204719317 U CN 204719317U CN 201520407237 U CN201520407237 U CN 201520407237U CN 204719317 U CN204719317 U CN 204719317U
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Abstract
The utility model relates to one day and night high definition fish eye lens, be convex surface to object plane on the left of first lens element, image plane is concave surface, second lens element be convex surface to object plane, image plane is concave surface, 3rd lens element to object plane, image plane is concave surface, 4th lens element is convex surface to object plane, image plane is also convex surface, first cemented component group be the left side of the first lens I to object plane be convex surface to object plane, image plane is the right side image plane of the second lens I is convex surface, second cemented component group be the left side of the first lens II to object plane be convex surface to object plane, image plane is the right side image plane of the second lens II is convex surface, two optical filter IR-CUT is plane to object plane and image plane, imaging plane is arranged on the right side of two optical filter IR-CUT, it receives the light from hemisphere object space.High definition fish eye lens and imaging plane are used for monitoring and security system, and by its high quality of image, good low optical property, day and night type and external form volume is little realizes benefit and sales advantage.
Description
Technical field
The utility model relates to high-resolution lens technology field, is specifically related to a kind of compact fish eye lens with the high quality of image, low optical property, day and night being applicable to the electronic apparatus system such as safety, monitoring.
Background technology
The camera lens can with 180 ± 10 degree, visual angle is called as fish eye lens.Fish eye lens is generally used for the application apparatus of security protection and monitoring character, and the application apparatus of this type comprises panorama non-blind area high definition video camera, vehicle-mounted inside and outside monitoring etc.Because fish-eye low optical property is very important, so fish eye lens must have large aperture, usually ideally, fish-eye aperture (also claiming F number) should lower than 3.Along with the demand of round-the-clock monitoring in 24 hours is increasing, and the two optical filter of near-infrared LED light source and IR-CUT auxiliary under, there is day and night flake monitoring camera, realized the confocal of visible ray and near infrared light.Many application apparatuss also require that fish-eye distortion is little, size is little.
Existing projective invariant is large, and logical light quantity is little, and low pixel installs the shortcomings such as rear cut-off distance is little, volume is large.
Summary of the invention
The purpose of this utility model is large for existing projective invariant, logical light quantity is little, low pixel, the shortcomings such as rear cut-off distance is little, volume is large are installed, one day and night high definition fish eye lens is provided, it comprises 8 optical lens components, the light from object is received from hemisphere object space, and on imaging plane, form image for the object in this space, high definition fish eye lens and imaging plane are used for security protection, supervisory system, and by its high quality of image, good low optical property, day and night type and external form volume is little realizes benefit and sales advantage.
The utility model is by the following technical solutions:
Day and night high definition fish eye lens, comprises the first lens element, the second lens element, the 3rd lens element, the 4th lens element, the first cemented component group, the second cemented component group, two optical filter IR-CUT and imaging plane, it is characterized in that: be convex surface to object plane on the left of the first lens element, another image plane is concave surface, second lens element is positioned at the right side of the first lens element, and the second lens element is convex surface to object plane, image plane is concave surface, 3rd lens element is arranged on the right side of the second lens element, be concave surface to object plane, image plane is also concave surface, 4th lens element is arranged on the right side of the 3rd lens element, be convex surface to object plane, image plane is also convex surface, first cemented component group is arranged on the right side of the 4th lens element, first cemented component group comprises the first lens I and the second lens I, first lens I are arranged on the left side of the second lens I, first cemented component group be the left side of the first lens I to object plane be convex surface to object plane, image plane is the right side image plane of the second lens I is convex surface, second cemented component group is arranged on the right side of the first cemented component group, second cemented component group comprises the first lens II and the second lens II, first lens II are arranged on the left side of the second lens II, second cemented component group be the left side of the first lens II to object plane be convex surface to object plane, image plane is the right side image plane of the second lens II is convex surface, two optical filter IR-CUT is arranged on the right side of the second cemented component group, and the left side of two optical filter IR-CUT is plane to object plane and right side image plane, imaging plane is arranged on the right side of two optical filter IR-CUT.
The first described lens element, the second lens element, the 3rd lens element, the 4th lens element, the first cemented component group, the second cemented component group, two optical filter IR-CUT and the equal co-axially align of imaging plane are on optical axis.
The 4th described lens element, the first cemented component group, the second cemented component group all have positive light focal length.
The first described lens element, when receiving 588nm wavelength light source, refractive index is lower than 1.66.
The 3rd described lens element, when receiving 588nm wavelength light source, refractive index is lower than 1.75.
The Abbe number of the first described lens element is higher than the Abbe number of the 3rd lens element.
The Abbe number of the second described lens element is lower than the Abbe number of the first lens element.
The ratio range of optics overall length TT of the present utility model and focal distance f 0 is: 35<TT/f0<38.
The utility model has following beneficial effect: it comprises 8 optical lens components, the light from object is received from hemisphere object space, and on imaging plane, form image for the object in this space, high definition fish eye lens and imaging plane are used for security protection, supervisory system, and by its high quality of image, good low optical property, day and night type and external form volume is little realizes benefit and sales advantage.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Embodiment
The utility model will be further described by reference to the accompanying drawings.
As shown in Figure 1, the utility model by the following technical solutions: comprise the first lens element 1, second lens element 2, the 3rd lens element 3, the 4th lens element 4, first cemented component group 5, second cemented component group 6, two optical filter IR-CUT 7 and imaging plane 8, be convex surface to object plane on the left of first lens element 1, another image plane is concave surface, second lens element 2 is positioned at the right side of the first lens element 1, and the second lens element 2 is convex surface to object plane, image plane is concave surface, 3rd lens element 3 is arranged on the right side of the second lens element 2, be concave surface to object plane, image plane is also concave surface, 4th lens element 4 is arranged on the right side of the 3rd lens element 3, be convex surface to object plane, image plane is also convex surface, first cemented component group 5 is arranged on the right side of the 4th lens element 4, first cemented component group 5 comprises the first lens I 5-1 and the second lens I 5-2, first lens I 5-1 is arranged on the left side of the second lens I 5-2, first cemented component group 5 be the left side of the first lens I 5-1 to object plane be convex surface to object plane, image plane is the right side image plane of the second lens I 5-2 is convex surface, second cemented component group 6 is arranged on the right side of cemented component group 5, second cemented component group 6 comprises the first lens II 6-1 and the second lens II 6-2, first lens II 6-1 is arranged on the left side of the second lens II 6-2, second cemented component group 6 be the left side of the first lens II 6-1 to object plane be convex surface to object plane, image plane is the right side image plane of the second lens II 6-2 is convex surface, two optical filter IR-CUT 7 is arranged on the right side of the second cemented component group 6, and the left side of two optical filter IR-CUT 7 is plane to object plane and right side image plane, imaging plane 8 is arranged on the right side of two optical filter IR-CUT 7, the equal co-axially align of the first described lens element 1, second lens element 2, the 3rd lens element 3, the 4th lens element 4, first cemented component group 5, second cemented component group 6, two optical filter IR-CUT 7 and imaging plane 8 is on optical axis 9.
The 4th described lens element 4, first cemented component group 5, second cemented component group 6 all has positive light focal length.The ratio range of optics overall length TT of the present utility model and focal distance f 0 is: 35<TT/f0<38.
The first described lens element 1, when receiving 588nm wavelength light source, refractive index is lower than 1.66.
The 3rd described lens element 3, when receiving 588nm wavelength light source, refractive index is lower than 1.75.
The Abbe number of the first described lens element 1 is higher than the Abbe number of the 3rd lens element 3.
The Abbe number of the second described lens element 2 is lower than the Abbe number of the first lens element 1.
This embodiment comprises 8 optical lens components, the light from object is received from hemisphere object space, and on imaging plane, form image for the object in this space, high definition fish eye lens and imaging plane are used for security protection, supervisory system, and by its high quality of image, good low optical property, day and night type and external form volume is little realizes benefit and sales advantage.
Claims (8)
1. day and night high definition fish eye lens, comprises the first lens element (1), the second lens element (2), the 3rd lens element (3), the 4th lens element (4), the first cemented component group (5), the second cemented component group (6), two optical filter IR-CUT (7) and imaging plane (8), it is characterized in that: the first lens element (1) left side is convex surface to object plane, another image plane is concave surface, second lens element (2) is positioned at the right side of the first lens element (1), and the second lens element (2) is convex surface to object plane, image plane is concave surface, 3rd lens element (3) is arranged on the right side of the second lens element (2), be concave surface to object plane, image plane is also concave surface, 4th lens element (4) is arranged on the right side of the 3rd lens element (3), be convex surface to object plane, image plane is also convex surface, first cemented component group (5) is arranged on the right side of the 4th lens element (4), first cemented component group (5) comprises the first lens (5-1) and the second lens (5-2), first lens I (5-1) are arranged on the left side of the second lens I (5-2), first cemented component group (5) be the left side of the first lens I (5-1) to object plane be convex surface to object plane, image plane is the right side image plane of the second lens I (5-2) is convex surface, second cemented component group (6) is arranged on the right side of the first cemented component group (5), second cemented component group (6) comprises the first lens II (6-1) and the second lens II (6-2), first lens II (6-1) are arranged on the left side of the second lens II (6-2), second cemented component group (6) be the left side of the first lens II (6-1) to object plane be convex surface to object plane, image plane is the right side image plane of the second lens II (6-2) is convex surface, two optical filter IR-CUT (7) is arranged on the right side of the second cemented component group (6), and the left side of two optical filter IR-CUT (7) is plane to object plane and right side image plane, imaging plane (8) is arranged on the right side of two optical filter IR-CUT (7).
2. day and night high definition fish eye lens according to claim 1, is characterized in that: the equal co-axially align of described the first lens element (1), the second lens element (2), the 3rd lens element (3), the 4th lens element (4), the first cemented component group (5), the second cemented component group (6), two optical filter IR-CUT (7) and imaging plane (8) is on optical axis (9).
3. day and night high definition fish eye lens according to claim 1 and 2, is characterized in that: the 4th described lens element (4), the first cemented component group (5), the second cemented component group (6) all have positive light focal length.
4. day and night high definition fish eye lens according to claim 1 and 2, is characterized in that: the first described lens element, and when receiving 588nm wavelength light source, refractive index is lower than 1.66.
5. day and night high definition fish eye lens according to claim 1 and 2, is characterized in that: the 3rd described lens element, and when receiving 588nm wavelength light source, refractive index is lower than 1.75.
6. day and night high definition fish eye lens according to claim 1 and 2, is characterized in that: the Abbe number of the first described lens element is higher than the Abbe number of the 3rd lens element.
7. day and night high definition fish eye lens according to claim 1 and 2, is characterized in that: the Abbe number of the second described lens element is lower than the Abbe number of the first lens element.
8. day and night high definition fish eye lens according to claim 1 and 2, is characterized in that: the ratio range of optics overall length TT and focal distance f 0 is: 35<TT/f0<38.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520407237.1U CN204719317U (en) | 2015-06-12 | 2015-06-12 | Day and night high definition fish eye lens |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520407237.1U CN204719317U (en) | 2015-06-12 | 2015-06-12 | Day and night high definition fish eye lens |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204719317U true CN204719317U (en) | 2015-10-21 |
Family
ID=54318296
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520407237.1U Expired - Fee Related CN204719317U (en) | 2015-06-12 | 2015-06-12 | Day and night high definition fish eye lens |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204719317U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107728283A (en) * | 2017-11-24 | 2018-02-23 | 中山依瓦塔光学有限公司 | The white fish eye lens of leakproof |
| CN107748424A (en) * | 2017-11-24 | 2018-03-02 | 中山依瓦塔光学有限公司 | Fish eye lens outward appearance leaks white ameliorative way |
-
2015
- 2015-06-12 CN CN201520407237.1U patent/CN204719317U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107728283A (en) * | 2017-11-24 | 2018-02-23 | 中山依瓦塔光学有限公司 | The white fish eye lens of leakproof |
| CN107748424A (en) * | 2017-11-24 | 2018-03-02 | 中山依瓦塔光学有限公司 | Fish eye lens outward appearance leaks white ameliorative way |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20151021 Termination date: 20190612 |
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| CF01 | Termination of patent right due to non-payment of annual fee |