CN203350516U - 12mm day-and-night dual-purpose prime lens - Google Patents
12mm day-and-night dual-purpose prime lens Download PDFInfo
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- CN203350516U CN203350516U CN 201320403555 CN201320403555U CN203350516U CN 203350516 U CN203350516 U CN 203350516U CN 201320403555 CN201320403555 CN 201320403555 CN 201320403555 U CN201320403555 U CN 201320403555U CN 203350516 U CN203350516 U CN 203350516U
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Abstract
The utility model discloses a 12mm day-and-night dual-purpose prime lens, including a first lens of convex-concave positive focal power, a second lens of biconcave negative focal power, a third lends of biconvex positive focal power, a fourth lens of biconvex positive focal power, a fifth lens of biconcave focal power which are sequentially arranged along the incidence direction of light. The second lens and the third lens are bonded through optical glue. According to the day-and-night dual-purpose prime lens, an optical structure of four groups of five pieces of lenses is adopted, distortion and aberration are reasonably corrected, a 1/2.5" large image plane is achieved while the largest image may be 7.3mm high, and a large aperture F1.8 is achieved by reasonably using glass combination, so that the day-and-night dual-purpose prime lens is fully suitable for a high-definition chip as the current mainstream while imaging quality is good, infrared ray does not defocus, and clear and bright monitoring pictures can be obtained even at low-light level at night; and with the reasonable focal power distribution, the four groups of the lenses need only two gaskets, and thus the cost is lowered to the greatest degree and the market prospect is wide.
Description
Technical field
The utility model relates to field of optical lens, refers to especially a kind of 12mm day and night tight shot.
Background technology
The 12mm camera lens belongs to a kind of telephoto lens, can observe longer-distance target.Be widely used in remote monitoring in whole security protection industry.Common 12mm camera lens mostly is the CS interface, and volume is large, Heavy Weight, and cost compare is high, and the video camera small-sized for some can't hold because of limited space.And the MTV camera lens of 12mm is also more rare, because volume is restricted make the camera lens clear aperature not do very large, this class camera lens image quality is often not ideal enough.The MTV camera lens of at present common 12mm is mainly the following camera lens of mega pixel, and imaging surface is less, and general maximum image height is 6.0mm.Along with security protection industry integral body develops to high Qinghua, chip size is increasing, pixel is more and more higher, and the MTV camera lens that has common 12mm now can not meet the demand of high definition.And the eyeglass quantity that the camera lens that as a rule the better resolution of image quality is higher is used is more, improve resolution because more eyeglass is conducive to correct aberration, but the cost of camera lens also rises thereupon.Design a kind of camera lens of high definition cheaply and seem particularly important.
The utility model content
The purpose of this utility model is to provide that a kind of cost is low, the 12mm day and night tight shot of imaging clearly.
For achieving the above object, the technical solution adopted in the utility model is as follows:
A kind of 12mm day and night tight shot, comprise the first lens of the convex-concave positive light coke set gradually along the light incident direction, the second lens of concave-concave negative power, the 3rd lens of biconvex positive light coke, the 4th lens of biconvex positive light coke, the 5th lens of concave-concave negative power, the second lens and the 3rd lens are bonding by optical cement; The focal length of five lens of this camera lens, refractive index reach the radius-of-curvature of totally ten curved surfaces and meet the following conditions respectively:
| 21.32≤f1≤22.59 | 1.66≤n1≤1.72 | 8.55≤R1≤9.21 | 18.26≤R2≤19.55 |
| -4.51≤f2≤-5.22 | 1.6≤n2≤1.65 | -9.32≤R3≤-10.43 | 4.5≤R4≤5.85 |
| 4.85≤f3≤5.5 | 1.67≤n3≤1.74 | 4.5≤R5≤5.85 | -9.42≤R6≤-10.31 |
| 9.05≤f4≤10.22 | 1.72≤n4≤1.8 | 8.54≤R7≤9.33 | -34.87≤R8≤-35.91 |
| -7.56≤f5≤-8.78 | 1.49≤n5≤1.56 | -8.51≤R9≤-9.44 | -8.51≤R10≤-9.44 |
In upper table, " f " is focal length, and " n " is refractive index, and " R " is radius-of-curvature, and "-" number means that direction is for negative.
Further, described first lens and the second lens are by the spacer ring close-fitting, and the axial spacing at optical axis place is 2.33mm; The 3rd lens and the 4th lens are by the spacer ring close-fitting, and the axial spacing at optical axis place is 0.12mm; The 4th lens and the 5th lens are directly near assembling, and the axial spacing at optical axis place is 0.28mm.
A kind of 12mm day and night of the utility model tight shot adopts the optical texture of 4 groups of 5 lens, distortion and aberration have rationally been corrected, can realize 1/2.5 " large image planes; maximum image height can reach 7.3mm; by reasonable use glass combination, realize large aperture F1.8, is applicable to the high definition chip of current main flow fully, and image quality is good; and make infrared not out of focus, even also can realize clear bright monitored picture at night under low-light (level); By the reasonable distribution focal power, make 4 groups of lens only need 2 packing rings, farthest reduce costs, market outlook are extensive.
The accompanying drawing explanation
The assembly drawing of each lens that Fig. 1 is 12mm day and night tight shot of the present utility model.
The optical system diagram of the 12mm day and night tight shot that Fig. 2 is Fig. 1.
Embodiment
For the technical solution of the utility model can more clearly be showed, below in conjunction with accompanying drawing, the utility model is described in further detail.
With reference to a kind of 12mm day and night tight shot shown in figure 1 and Fig. 2, comprise first lens L1, the second lens L2, the 3rd lens L3 of biconvex positive light coke of concave-concave negative power, the 4th lens L4 of biconvex positive light coke, the 5th lens L5 of concave-concave negative power of the convex-concave positive light coke set gradually along the light incident direction; Wherein, first lens L1 and the second lens L2 are by the spacer ring close-fitting, and the axial spacing at optical axis place is 2.33mm; The second lens L2 and the 3rd lens L3 are bonding by optical cement; The 3rd lens L3 and the 4th lens L4 are by the spacer ring close-fitting, and the axial spacing at optical axis place is 0.12mm; The 4th lens L4 and the 5th lens L5 are directly near assembling, and the axial spacing at optical axis place is 0.28mm.
The focal length of five lens of this camera lens, refractive index reach the radius-of-curvature of totally ten curved surfaces and meet the following conditions respectively:
| 21.32≤f1≤22.59 | 1.66≤n1≤1.72 | 8.55≤R1≤9.21 | 18.26≤R2≤19.55 |
| -4.51≤f2≤-5.22 | 1.6≤n2≤1.65 | -9.32≤R3≤-10.43 | 4.5≤R4≤5.85 |
| 4.85≤f3≤5.5 | 1.67≤n3≤1.74 | 4.5≤R5≤5.85 | -9.42≤R6≤-10.31 |
| 9.05≤f4≤10.22 | 1.72≤n4≤1.8 | 8.54≤R7≤9.33 | -34.87≤R8≤-35.91 |
| -7.56≤f5≤-8.78 | 1.49≤n5≤1.56 | -8.51≤R9≤-9.44 | -8.51≤R10≤-9.44 |
In upper table, " f " is focal length, and " n " is refractive index, and " R " is radius-of-curvature, and "-" number means that direction is for negative.
Above-mentioned 12mm day and night tight shot adopts the optical texture of 4 groups of 5 lens, distortion and aberration have rationally been corrected, can realize 1/2.5 " large image planes; maximum image height can reach 7.3mm; by reasonable use glass combination, realize large aperture F1.8, is applicable to the high definition chip of current main flow fully, and image quality is good; and make infrared not out of focus, even also can realize clear bright monitored picture at night under low-light (level); By the reasonable distribution focal power, make 4 groups of lens only need 2 packing rings, farthest reduce costs, market outlook are extensive.
Above embodiment just is explanation rather than restriction the utility model, and the equivalence of doing according to the described method of the utility model patent claim therefore all changes or modifies, and is included in the utility model patent claim.
Claims (2)
1. a 12mm day and night tight shot, it is characterized in that: comprise the first lens of the convex-concave positive light coke set gradually along the light incident direction, the second lens of concave-concave negative power, the 3rd lens of biconvex positive light coke, the 4th lens of biconvex positive light coke, the 5th lens of concave-concave negative power, the second lens and the 3rd lens are bonding by optical cement; The focal length of five lens of this camera lens, refractive index reach the radius-of-curvature of totally ten curved surfaces and meet the following conditions respectively:
In upper table, " f " is focal length, and " n " is refractive index, and " R " is radius-of-curvature, and "-" number means that direction is for negative.
2. a kind of 12mm day and night tight shot according to claim 1 is characterized in that: described first lens and the second lens are by the spacer ring close-fitting, and the axial spacing at optical axis place is 2.33mm; The 3rd lens and the 4th lens are by the spacer ring close-fitting, and the axial spacing at optical axis place is 0.12mm; The 4th lens and the 5th lens are directly near assembling, and the axial spacing at optical axis place is 0.28mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320403555 CN203350516U (en) | 2013-07-08 | 2013-07-08 | 12mm day-and-night dual-purpose prime lens |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320403555 CN203350516U (en) | 2013-07-08 | 2013-07-08 | 12mm day-and-night dual-purpose prime lens |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203350516U true CN203350516U (en) | 2013-12-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320403555 Expired - Lifetime CN203350516U (en) | 2013-07-08 | 2013-07-08 | 12mm day-and-night dual-purpose prime lens |
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| Country | Link |
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| CN (1) | CN203350516U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI637211B (en) * | 2016-08-23 | 2018-10-01 | 大立光電股份有限公司 | Photographing optical lens assembly, image capturing apparatus and electronic device |
-
2013
- 2013-07-08 CN CN 201320403555 patent/CN203350516U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI637211B (en) * | 2016-08-23 | 2018-10-01 | 大立光電股份有限公司 | Photographing optical lens assembly, image capturing apparatus and electronic device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: GUANGDONG YUTONG OPTICAL CO., LTD. Free format text: FORMER OWNER: DONGGUAN YUTONG OPTICAL TECHNOLOGY CO., LTD. Effective date: 20140710 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20140710 Address after: Changan town in Guangdong province Dongguan 523000 usha Ring Road No. 306 Long Yu Kai Dong Industrial Zone D Patentee after: GUANGDONG YUTONG OPTICAL Co.,Ltd. Address before: Changan town in Guangdong province Dongguan 523000 usha Ring Road No. 306 Long Yu Kai Dong Industrial Zone D Patentee before: DONGGUAN YUTONG OPTICAL TECHNOLOGY Co.,Ltd. |
|
| ASS | Succession or assignment of patent right |
Owner name: DONGGUAN YUTONG OPTICAL TECHNOLOGY CO., LTD. Free format text: FORMER OWNER: GUANGDONG YUTONG OPTICAL CO., LTD. Effective date: 20141113 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20141113 Address after: 523000, Changan, Dongguan Town, Guangdong province Xin'an community Tian Tian Road Hengtai Industrial Zone No. 168 Patentee after: DONGGUAN YUTONG OPTICAL TECHNOLOGY Co.,Ltd. Address before: Changan town in Guangdong province Dongguan 523000 usha Ring Road No. 306 Long Yu Kai Dong Industrial Zone D Patentee before: GUANGDONG YUTONG OPTICAL Co.,Ltd. |
|
| C56 | Change in the name or address of the patentee | ||
| CP03 | Change of name, title or address |
Address after: Changan town in Guangdong province Dongguan 523000 usha Ring Road No. 306 Long Yu Kai Dong Industrial Zone D Patentee after: DONGGUAN YUTONG OPTICAL TECHNOLOGY Co.,Ltd. Address before: 523000, Changan, Dongguan Town, Guangdong province Xin'an community Tian Tian Road Hengtai Industrial Zone No. 168 Patentee before: DONGGUAN YUTONG OPTICAL TECHNOLOGY Co.,Ltd. |
|
| CX01 | Expiry of patent term |
Granted publication date: 20131218 |
|
| CX01 | Expiry of patent term |