CN102967924B - Optical lens - Google Patents
Optical lens Download PDFInfo
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- CN102967924B CN102967924B CN201210445211.7A CN201210445211A CN102967924B CN 102967924 B CN102967924 B CN 102967924B CN 201210445211 A CN201210445211 A CN 201210445211A CN 102967924 B CN102967924 B CN 102967924B
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Abstract
The invention discloses an optical lens. A first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, a seventh lens, an eighth lens, a ninth lens and a tenth lens are sequentially arranged on a common optic axis straight line from object space to image space, a diaphragm is arranged between the third lens and the fourth lens, and the fifth lens, the sixth lens and the seventh lens form a triplet lens for reducing chromatic aberration generated by confocal phenomenon of visible light and infrared light.
Description
[technical field]
The present invention relates to a kind of optical lens, be a novel white for taking/the safety monitoring imaging optical lens of night scene thing.
[background technology]
At present, it is more and more extensive that safety monitoring camera lens uses, but often image planes size is less for the security lens using at present, and focal length is shorter, so can not form larger image planes and can not effectively photograph the object of object distance far away.
And at night, although the infrared light that the camera lens of using daytime can receive can not effectively focus in image planes, thereby cause the night can not imaging.And the confocal camera lens of a small amount of visible ray occurring on the market and infrared light, often the eyeglass of use is more higher with glass material price, extensively promotes the use of thereby limited this class camera lens.
[summary of the invention]
The present invention has overcome the deficiencies in the prior art, provides a kind of large image planes, visible ray and infrared light confocal imaging optical lens.
In order to solve the technical matters of above-mentioned existence, the present invention adopts following technical proposal:
A kind of optical lens, it is characterized in that: include from the object side to the image side and be provided with successively first lens 1, the second lens 2, the 3rd lens 3, the 4th lens 4, the 5th lens 5, the 6th lens 6, the 7th lens 7, the 8th lens 8, the 9th lens 9 and the tenth lens 10 on common optical axis straight line, between the 3rd lens 3 and the 4th lens 4, be provided with diaphragm 12, three balsaming lenss that described the 5th lens 5, the 6th lens 6, the 7th lens 7 are the aberration problem of minimizing visible ray and the confocal generation of infrared light.
A kind of optical lens as above, the focal length that it is characterized in that described first lens 1, the 3rd lens 3, the 5th lens 5, the 7th lens 7, the 8th lens 8 the 9th lens 9 is for just, the focal length of described the second lens 2, the 4th lens 4, the 6th lens 6, the tenth lens 10 is for negative, and the concave surface 14 of the tenth lens is towards image planes direction.
A kind of optical lens as above, is characterized in that described first lens 1 and the 3rd lens 3 adopt high-index material, and the 7th lens 7 adopt low chromatic dispersion material.
A kind of optical lens as above, is characterized in that being provided with sensitive chip 11 after described the tenth lens 10.
A kind of optical lens as above, is characterized in that being provided with optical filter 13 between the tenth lens 10 and sensitive chip 11.
A kind of optical lens as above, is characterized in that described first lens 1, the second lens 2, the 3rd lens 3 form first lens group; The 4th lens 4, the 5th lens 5, the 6th lens 6, the 7th lens 7 form the second lens group; The 8th lens 8, the 9th lens 9 and the tenth lens 10 form the 3rd lens group.
The present invention compared with prior art has advantages of as follows:
1, native system can be realized infrared light and visible ray is confocal, and object distance is+and ∞ is to 1.0m, can meet different object distances and the 24 hours needs of work taken.
2, this lens optical design has the features such as compact conformation, volume are little, meanwhile, and to visible ray or near infrared imaging has very strong resolving power.
3, native system sensitive chip used is 1 ", there are larger effective image planes, be more conducive to meet safety monitoring needs.
[brief description of the drawings]
Fig. 1 is to be the structural representation of this camera lens.
Fig. 2 is the MTF figure of this camera lens visual light imaging performance.
Fig. 3 is the MTF figure of this camera lens near infrared imaging performance.
[embodiment]
Below in conjunction with accompanying drawing and embodiment, the present invention is described in further detail:
A kind of optical lens, include from the object side to the image side and be provided with successively first lens 1, the second lens 2, the 3rd lens 3, the 4th lens 4, the 5th lens 5, the 6th lens 6, the 7th lens 7, the 8th lens 8, the 9th lens 9 and the tenth lens 10 on common optical axis straight line, between the 3rd lens 3 and the 4th lens 4, be provided with diaphragm 12, three balsaming lenss that described the 5th lens 5, the 6th lens 6, the 7th lens 7 are the aberration problem of minimizing visible ray and the confocal generation of infrared light.Infrared light wavelength is 850nm.
Described first lens 1, the second lens 2, the 3rd lens 3 form first lens group; The 4th lens 4, the 5th lens 5, the 6th lens 6, the 7th lens 7 form the second lens group; The 8th lens 8, the 9th lens 9 and the tenth lens 10 form the 3rd lens group.
Compact conformation between each lens in each lens group, cooperatively interacts between these three lens groups, color difference eliminating preferably, thereby ensured visible ray and infrared light confocal.Present case adopts wide spectrum in the time of design, and the Theory Solution image force of design is suitably higher than theory demands value, has ensured image sharpness and color reducibility.
As embodiment preferably, the focal length of described first lens 1, the 3rd lens 3, the 5th lens 5, the 7th lens 7, the 8th lens 8 the 9th lens 9 is for just, the focal length of described the second lens 2, the 4th lens 4, the 6th lens 6, the tenth lens 10 is for negative, and the concave surface 14 of the tenth lens is towards image planes direction.
The visible ray of this optical lens and infrared light are confocal mainly to be realized by the following method:
1, in the time of design camera lens initial configuration, consider emphatically the confocal requirement of visible ray and infrared light (850nm), choose the optical texture that is conducive to realize this requirement, in design process, pay attention to proofreading and correct the aberration of visible ray and infrared light.
2, rationally effectively apolegamy lens materials, especially first lens 1 and the 3rd lens 3 adopt high-index material, and the 7th lens 7 adopt low chromatic dispersion material.
3, adopt three glued constructions at camera lens key position, the 5th lens 5, the 6th lens 6, the 7th lens 7 are three gummed eyeglasses.Reduce the aberration problem of visible ray and the confocal generation of infrared light 850nm from structure.
Above three kinds of measures have ensured that camera lens is realized visible ray and infrared light is confocal.
Adopt after said structure, visible ray and infrared light differ very little by rear lens focus point, in same image planes, can meet the imaging demand of two kinds of wave bands simultaneously.When visual light imaging, visual field, center 125 lines are greater than 0.55 to locating mtf value, and visual field, edge 120 lines are greater than 0.3 to locating mtf value.When infrared light 850nm imaging, visual field, center 90 lines are 0.4 to locating mtf value, and visual field, edge 90 lines are 0.3 to locating mtf value.
As embodiment preferably, described the tenth lens 10 be provided with sensitive chip 11 below, the physical dimension of this sensitive chip 11 is 20320 μ m × 15240 μ m, chip size 12850 μ m × 9640 μ m, pixel size is 5.5 μ m × 5.5 μ m.
As embodiment preferably, between the tenth lens 10 and sensitive chip 11, be provided with optical filter 13.
Lift the actual design case of an optical system below:
Claims (4)
1. an optical lens, it is characterized in that: include from the object side to the image side and be provided with successively first lens (1) on common optical axis straight line, the second lens (2), the 3rd lens (3), the 4th lens (4), the 5th lens (5), the 6th lens (6), the 7th lens (7), the 8th lens (8), the 9th lens (9) and the tenth lens (10), between the 3rd lens (3) and the 4th lens (4), be provided with diaphragm (12), described the 5th lens (5), the 6th lens (6), the 7th lens (7) are three balsaming lenss of the aberration problem of minimizing visible ray and the confocal generation of infrared light, described first lens (1) and the 3rd lens (3) adopt high-index material, and the 7th lens (7) adopt low chromatic dispersion material, the focal length of described first lens (1), the 3rd lens (3), the 5th lens (5), the 7th lens (7), the 8th lens (8) the 9th lens (9) is for just, the focal length of described the second lens (2), the 4th lens (4), the 6th lens (6), the tenth lens (10) is for negative, and the concave surface of the tenth lens (14) is towards image planes direction.
2. a kind of optical lens according to claim 1, is characterized in that being provided with sensitive chip (11) after described the tenth lens (10).
3. a kind of optical lens according to claim 2, is characterized in that being provided with optical filter (13) between the tenth lens (10) and sensitive chip (11).
4. a kind of optical lens according to claim 1, is characterized in that described first lens (1), the second lens (2), the 3rd lens (3) composition first lens group; The 4th lens (4), the 5th lens (5), the 6th lens (6), the 7th lens (7) composition the second lens group; The 8th lens (8), the 9th lens (9) and the tenth lens (10) composition the 3rd lens group.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210445211.7A CN102967924B (en) | 2012-11-08 | 2012-11-08 | Optical lens |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210445211.7A CN102967924B (en) | 2012-11-08 | 2012-11-08 | Optical lens |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102967924A CN102967924A (en) | 2013-03-13 |
| CN102967924B true CN102967924B (en) | 2014-10-08 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201210445211.7A Active CN102967924B (en) | 2012-11-08 | 2012-11-08 | Optical lens |
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| CN (1) | CN102967924B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI600923B (en) * | 2016-10-19 | 2017-10-01 | 大立光電股份有限公司 | Photographing optical lens system, image capturing device and electronic device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105093487B (en) * | 2015-07-29 | 2020-09-04 | 深圳乐行天下科技有限公司 | Near-infrared optical lens |
| TWI664465B (en) * | 2017-07-27 | 2019-07-01 | 先進光電科技股份有限公司 | Optical image capturing system |
| CN109884773B (en) * | 2019-04-02 | 2023-12-05 | 奥普特视觉科技(苏州)有限公司 | Lens with low distortion and large target surface |
| CN110376719B (en) * | 2019-08-16 | 2024-02-20 | 杭州图谱光电科技有限公司 | High-pixel-number large-aperture large-target-surface day and night confocal lens |
| CN112817119B (en) * | 2019-11-15 | 2021-11-16 | 中国科学院长春光学精密机械与物理研究所 | Optical lens for spaceflight |
| CN110811487B (en) * | 2019-11-29 | 2021-07-16 | 重庆西山科技股份有限公司 | Endoscope optical system |
| CN110876605B (en) * | 2019-11-29 | 2021-07-16 | 重庆西山科技股份有限公司 | Endoscope optical system |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2858639B2 (en) * | 1995-10-06 | 1999-02-17 | 防衛庁技術研究本部長 | Wide-angle lens for UV |
| US5933283A (en) * | 1996-04-15 | 1999-08-03 | Canon Kabushiki Kaisha | Zoom lens |
| CN2664006Y (en) * | 2003-12-18 | 2004-12-15 | 厦门力鼎光电技术有限公司 | A lens special for monitor |
| CN100501490C (en) * | 2004-09-15 | 2009-06-17 | 株式会社尼康 | Wide zoom lens system |
| CN202916487U (en) * | 2012-11-08 | 2013-05-01 | 中山联合光电科技有限公司 | Visible light and infrared light confocal imaging optical lens with large image plane |
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2012
- 2012-11-08 CN CN201210445211.7A patent/CN102967924B/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI600923B (en) * | 2016-10-19 | 2017-10-01 | 大立光電股份有限公司 | Photographing optical lens system, image capturing device and electronic device |
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| CN102967924A (en) | 2013-03-13 |
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| C56 | Change in the name or address of the patentee |
Owner name: ZHONGSHAN LIANHE PHOTOELECTRIC TECHNOLOGY CO., LTD Free format text: FORMER NAME: ZHONGSHAN UNION OPTIC CO., LTD. |
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| CP03 | Change of name, title or address |
Address after: 528400 Zhongshan Torch Development Zone, Guangdong Road, No. 10 Patentee after: Zhong Shan joint opto-electronic Science and Technology Co., Ltd. Address before: 528400 Guangdong province Zhongshan Dongli Torch Development Zone torch joint electronic city building A3 Patentee before: Union Optech (Zhongshan) Co., Ltd. |