CN204832648U - Camera lens with super large angle of vision - Google Patents
Camera lens with super large angle of vision Download PDFInfo
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- CN204832648U CN204832648U CN201520440217.4U CN201520440217U CN204832648U CN 204832648 U CN204832648 U CN 204832648U CN 201520440217 U CN201520440217 U CN 201520440217U CN 204832648 U CN204832648 U CN 204832648U
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- lens
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Abstract
The utility model discloses a camera lens with super large angle of vision is along the optical axis orientation from the object space including front surface mirror group, diaphragm and rear mirror group to the object space is the place ahead, front surface mirror group includes firstly to VI lenses in proper order, protruding recurve glass lens before first lens are, and protruding recurve falcate aspheric surface glass lens before the second lens are, protruding back concavees lens before the third lens are, protruding back concavees lens before the fourth lens are, protruding back convex lens before the 5th lens are, concave back convex lens before VI lenses is, the 5th lens and VI lenses glue each other, rear mirror group includes the 7th to the tenth lens along the optical axis direction, and the 7th lens are preceding flat back convex lens, concave back convex lens before the 8th lens are, and protruding back convex lens before the 9th lens are, concave back convex lens before the tenth lens are, the 7th lens and the 8th lens glue each other, the 9th lens and the tenth lens glue each other, the utility model discloses the angle of vision is big, can reach 240, and low F -Theta distortion, low colour difference.
Description
Technical field
The utility model relates to monitoring camera, especially a kind of camera lens with ultra-large vision field angle.
Background technology
Along with people's improving constantly social safety attention degree, supervisory system is widely used in every field.The general field angle of current safety monitoring camera lens is less, is difficult to the requirement meeting large-range monitoring; On the other hand, the imaging effect of camera lens is poor, there is F-Theta distortion and larger aberration.
Utility model content
The technical problems to be solved in the utility model is to provide a kind of camera lens with ultra-large vision field angle, its tool ultra-large vision field angle, low F-Theta distortion, low aberration.
For achieving the above object, the technical solution of the utility model is: a kind of camera lens with ultra-large vision field angle, from object space, front lens group is comprised along optical axis direction, diaphragm and rear mirror group, described front lens group comprises the first lens along optical axis direction successively from object space, second lens, 3rd lens, 4th lens, 5th lens, 6th lens, take object space as front, described first lens are lordosis recurve glass lens, described second lens are lordosis recurve falcate aspherical glass lens, described 3rd lens are concavees lens after lordosis, described 4th lens are concavees lens after lordosis, described 5th lens are convex lens after lordosis, described 6th lens are front recessed rear convex lens, described 5th lens and the 6th lens glue together mutually,
Described rear mirror group comprises the 7th lens, the 8th lens, the 9th lens and the tenth lens successively along optical axis direction from object space, take object space as front, described 7th lens are front flat rear convex lens, described 8th lens are front recessed rear convex lens, described 7th lens and the 8th lens glue together mutually, described 9th lens are convex lens after lordosis, and described tenth lens are front recessed rear convex lens, and described 9th lens and the tenth lens glue together mutually.
Be preferably front with object space, described first lens are the second plane of refraction away from the face of object space, and the thickness D of described first lens and the radius of curvature R of the second plane of refraction meet the following conditions: 1.90 < D/R < 1.95.Second curved refractive surfaces degree is larger to meet the demand of camera lens to wide-angle.
Preferably the refractive index of described first lens is N
1, N
1meet the following conditions: 1.90 < N
1< 1.95, improves resolution.
Preferably the refractive index of described second lens is N
2, N
2meet the following conditions: 1.65 < N
2< 1.80.
Preferably the abbe number of described 3rd lens is V
d3, V
d3meet the following conditions: 60 < V
d3< 64; The abbe number of described 9th lens is V
d9, V
d9meet the following conditions: 60 < V
d9< 64.Select the lens of high abbe number with color difference eliminating.
Described front lens group focal length is f
l1, described rear mirror group focal distance f
l2, preferred f
l1and f
l2meet the following conditions: 2.5 < | f
l1/ f
l2| < 3.5.
Preferably described first focal length of lens is f
a, described second focal length of lens is f
b, f
awith f
bmeet the following conditions: 1.7 < | f
a/ f
b| < 1.9.
Preferably described first focal length of lens is f
a, f
ameet the following conditions: | f
a| > 14.0mm; Described second focal length of lens is f
b, preferred f
bmeet the following conditions: | f
b| > 7.5mm.
Spacing preferably between described first lens and the second lens is 5.0mm to 6.5mm; Distance between balsaming lens after balsaming lens after described 5th lens and the 6th lens glue together mutually and described 7th lens and the 8th lens glue together mutually is 3.5mm to 4.5mm.
Preferably the focal length of described second lens is f
b, the focal length after described 5th lens glue together mutually with the 6th lens is f
e, f
bwith f
emeet the following conditions: 1.0 < | f
b/ f
e| < 2.0;
The focal length of described 3rd lens is f
c, the focal length after described 7th lens glue together mutually with the 8th lens is f
f, f
cwith f
fmeet the following conditions: 0.5 < | f
c/ f
f| < 1.5;
The focal length of described 4th lens is f
d, the focal length after described 9th lens glue together mutually with the tenth lens is f
g, f
dwith f
gmeet the following conditions: 1.2 < | f
d/ f
g| < 2.2.
Front lens group described in the utility model comprises the first lens, the second lens, the 3rd lens, the 4th lens, the 5th lens and the 6th lens successively along optical axis direction from object space, cooperatively interacting of these six lens ensure that the Large visual angle angle of camera lens, and the second lens adopt falcate Glass aspheric eyeglass to eliminate astigmatism, the curvature of field and F-Theta distortion; In rear mirror group, the 7th lens and the 8th lens glue together mutually, and the 9th lens and the tenth lens glue together mutually, the mode color difference eliminating namely glued together between scioptics in described rear mirror group.Further, the utility model also has high temperature resistant, resistance to high humidity, scratch-resistant, the feature that resolution is high.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Embodiment
Below in conjunction with accompanying drawing and concrete embodiment, the utility model is described in further detail.
Shown in Fig. 1, a kind of camera lens with ultra-large vision field angle, from object space, front lens group 10 is comprised along optical axis direction, diaphragm 20 and rear mirror group 30, described front lens group 10 comprises the first lens 11 successively along optical axis direction from object space, second lens 12, 3rd lens 13, 4th lens 14, 5th lens 15 and the 6th lens 16, take object space as front, described first lens 11 are lordosis recurve glass lens, take object space as front, described first lens 11 are the second plane of refraction away from the face of object space, the described thickness D of the first lens 11 and the radius of curvature R of the second plane of refraction meet the following conditions: 1.90 < D/R < 1.95, the refractive index of described first lens 11 is N
1, N
1meet the following conditions: 1.90 < N
1< 1.95,
Second lens 12 described in front lens group 10 are lordosis recurve falcate aspherical glass lens, and the refractive index of described second lens 12 is N
2, N
2meet the following conditions: 1.65 < N
2< 1.80; Spacing between described first lens 11 and the second lens 12 is 5.0mm to 6.5mm; Described 3rd lens 13 are concavees lens after lordosis, and the abbe number of described 3rd lens 13 is V
d3, V
d3meet the following conditions: 60 < V
d3< 64; Described 4th lens 14 are concavees lens after lordosis, and described 5th lens 15 are convex lens after lordosis, and described 6th lens 16 are front recessed rear convex lens, and described 5th lens 15 and the 6th lens 16 glue together mutually;
Described rear mirror group 30 comprises the 7th lens 31, the 8th lens 32, the 9th lens 33 and the tenth lens 34 successively along optical axis direction from object space, take object space as front, described 7th lens 31 are front flat rear convex lens, described 8th lens 32 are front recessed rear convex lens, described 7th lens 31 and the 8th lens 32 glue together mutually, described 9th lens 33 are convex lens after lordosis, and the abbe number of described 9th lens 33 is V
d9, V
d9meet the following conditions: 60 < V
d9< 64; Described tenth lens 34 are front recessed rear convex lens, and described 9th lens 33 and the tenth lens 34 glue together mutually.
Described 5th lens 15 and the 6th lens 16 phase gummed after balsaming lens glue together with described 7th lens 31 and the 8th lens 32 phase after balsaming lens between distance be 3.5mm to 4.5mm.
Described front lens group 10 focal length is f
l1, described rear mirror group 30 focal distance f
l2, preferred f
l1and f
l2meet the following conditions: 2.5 < | f
l1/ f
l2| < 3.5.
Described first lens 11 focal length is f
a, described second lens 12 focal length is f
b, preferred f
awith f
bmeet the following conditions: 1.7 < | f
a/ f
b| < 1.9.
Preferably described first lens 11 focal length is f
a, f
ameet the following conditions: | f
a| > 14.0mm; Described second lens 12 focal length is f
b, f
bmeet the following conditions: | f
b| > 7.5mm.
The focal length of described second lens 12 is f
b, the focal length after described 5th lens 15 glue together mutually with the 6th lens 16 is f
e, preferred f
bwith f
emeet the following conditions: 1.0 < | f
b/ f
e| < 2.0; The focal length of described 3rd lens 13 is f
c, the focal length after described 7th lens 31 glue together mutually with the 8th lens 32 is f
f, preferred f
cwith f
fmeet the following conditions: 0.5 < | f
c/ f
f| < 1.5; The focal length of described 4th lens 14 is f
d, the focal length after described 9th lens 33 glue together mutually with the tenth lens 34 is f
g, preferred f
dwith f
gmeet the following conditions: 1.2 < | f
d/ f
g| < 2.2.
The present embodiment can reach following technical parameter: camera lens adopts ten lens, and overall length, at below 35mm, meets the demand that market is shorter and shorter to consumption eka-ytterbium head, and reduces cost; Image planes are 1/2.3 " time FOV be greater than 240 °; The resolution of camera lens reaches 8M, and being much better than resolution is on the market the security lens of 1,000,000.
Below be only the utility model preferred embodiment, those skilled in the art makes by claim the protection domain that equivalent change all falls into this case.
Claims (10)
1. one kind has the camera lens at ultra-large vision field angle, from object space, front lens group is comprised along optical axis direction, diaphragm and rear mirror group, it is characterized in that: described front lens group comprises the first lens along optical axis direction successively from object space, second lens, 3rd lens, 4th lens, 5th lens and the 6th lens, take object space as front, described first lens are lordosis recurve glass lens, described second lens are lordosis recurve falcate aspherical glass lens, described 3rd lens are concavees lens after lordosis, described 4th lens are concavees lens after lordosis, described 5th lens are convex lens after lordosis, described 6th lens are front recessed rear convex lens, described 5th lens and the 6th lens glue together mutually,
Described rear mirror group comprises the 7th lens, the 8th lens, the 9th lens and the tenth lens successively along optical axis direction from object space, take object space as front, described 7th lens are front flat rear convex lens, described 8th lens are front recessed rear convex lens, described 7th lens and the 8th lens glue together mutually, described 9th lens are convex lens after lordosis, and described tenth lens are front recessed rear convex lens, and described 9th lens and the tenth lens glue together mutually.
2. a kind of camera lens with ultra-large vision field angle according to claim 1, it is characterized in that: take object space as front, described first lens are the second plane of refraction away from the plane of refraction of object space, and the thickness D of described first lens and the radius of curvature R of the second plane of refraction meet the following conditions: 1.90 < D/R < 1.95.
3. a kind of camera lens with ultra-large vision field angle according to claim 1, is characterized in that: the refractive index of described first lens is N
1, N
1meet the following conditions: 1.90 < N
1< 1.95.
4. a kind of camera lens with ultra-large vision field angle according to claim 1, is characterized in that: the refractive index of described second lens is N
2, N
2meet the following conditions: 1.65 < N
2< 1.80.
5. a kind of camera lens with ultra-large vision field angle according to claim 1, is characterized in that: the abbe number of described 3rd lens is V
d3, V
d3meet the following conditions: 60 < V
d3< 64; The abbe number of described 9th lens is V
d9, V
d9meet the following conditions: 60 < V
d9< 64.
6. a kind of camera lens with ultra-large vision field angle according to claim 1, is characterized in that: described front lens group focal length is f
l1, described rear mirror group focal distance f
l2, f
l1and f
l2meet the following conditions: 2.5 < | f
l1/ f
l2| < 3.5.
7. a kind of camera lens with ultra-large vision field angle according to claim 1, is characterized in that: described first focal length of lens is f
a, described second focal length of lens is f
b, f
awith f
bmeet the following conditions: 1.7 < | f
a/ f
b| < 1.9.
8. a kind of camera lens with ultra-large vision field angle according to claim 1, is characterized in that: described first focal length of lens is f
a, f
ameet the following conditions: | f
a| > 14.0mm; Described second focal length of lens is f
b, f
bmeet the following conditions: | f
b| > 7.5mm.
9. a kind of camera lens with ultra-large vision field angle according to claim 1, is characterized in that: the spacing between described first lens and the second lens is 5.0mm to 6.5mm; Distance between balsaming lens after balsaming lens after described 5th lens and the 6th lens glue together mutually and described 7th lens and the 8th lens glue together mutually is 3.5mm to 4.5mm.
10. a kind of camera lens with ultra-large vision field angle according to claim 1, is characterized in that: the focal length of described second lens is f
b, the focal length after described 5th lens glue together mutually with the 6th lens is f
e, f
bwith f
emeet the following conditions: 1.0 < | f
b/ f
e| < 2.0;
The focal length of described 3rd lens is f
c, the focal length after described 7th lens glue together mutually with the 8th lens is f
f, f
cwith f
fmeet the following conditions: 0.5 < | f
c/ f
f| < 1.5;
The focal length of described 4th lens is f
d, the focal length after described 9th lens glue together mutually with the tenth lens is f
g, f
dwith f
gmeet the following conditions: 1.2 < | f
d/ f
g| < 2.2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520440217.4U CN204832648U (en) | 2015-06-25 | 2015-06-25 | Camera lens with super large angle of vision |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520440217.4U CN204832648U (en) | 2015-06-25 | 2015-06-25 | Camera lens with super large angle of vision |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204832648U true CN204832648U (en) | 2015-12-02 |
Family
ID=54690230
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520440217.4U Active CN204832648U (en) | 2015-06-25 | 2015-06-25 | Camera lens with super large angle of vision |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204832648U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106646837A (en) * | 2016-03-31 | 2017-05-10 | 优势拓展（北京）科技有限公司 | Fish-eye lens |
| CN106094171B (en) * | 2016-08-08 | 2018-07-10 | 上海大学 | A kind of fish eye lens of ultra-large vision field and object lens of large relative aperture |
-
2015
- 2015-06-25 CN CN201520440217.4U patent/CN204832648U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106646837A (en) * | 2016-03-31 | 2017-05-10 | 优势拓展（北京）科技有限公司 | Fish-eye lens |
| CN106646837B (en) * | 2016-03-31 | 2019-01-29 | 优势拓展（北京）科技有限公司 | Fish eye lens |
| CN106094171B (en) * | 2016-08-08 | 2018-07-10 | 上海大学 | A kind of fish eye lens of ultra-large vision field and object lens of large relative aperture |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20170801 Address after: Xinyang Industrial Zone Xinmei road Xiamen City, Fujian province 361000 Haicang No. 26 Patentee after: Xiamen Leading Optics Co., Ltd. Address before: 361000 538B room, Xuan industrial building, pioneer zone, torch hi tech Zone, Fujian, Xiamen Patentee before: XIAMEN YUNZHITUO SCIENCE & TECHNOLOGY CO., LTD. |
|
| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 361000 26 Xinmei Road, Xinyang Industrial Zone, Haicang, Xiamen, Fujian Patentee after: Xiamen Li Ding Au Optronics Co Address before: 361000 26 Xinmei Road, Xinyang Industrial Zone, Haicang, Xiamen, Fujian Patentee before: Xiamen Leading Optics Co., Ltd. |