CN105607234B - A kind of fish eye lens - Google Patents
A kind of fish eye lens Download PDFInfo
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- CN105607234B CN105607234B CN201610013065.9A CN201610013065A CN105607234B CN 105607234 B CN105607234 B CN 105607234B CN 201610013065 A CN201610013065 A CN 201610013065A CN 105607234 B CN105607234 B CN 105607234B
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- fish eye
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B13/00—Optical objectives specially designed for the purposes specified below
- G02B13/06—Panoramic objectives; So-called "sky lenses" including panoramic objectives having reflecting surfaces
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- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
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Abstract
The invention belongs to lens technology field, a kind of more particularly to ultra high-definition fish eye lens, including the first lens being arranged in order from the object side to the image side, second lens, 3rd lens, 4th lens, 5th lens, 6th lens, 7th lens, 8th lens and the 9th lens, first lens are convex-concave negative-power lenses, second lens are plano-concave negative-power lenses, 3rd lens are convex-concave negative-power lenses, 4th lens are convex flat positive power lens, 5th lens are plano-convex positive power lens, 6th lens are concave-concave negative-power lenses, 7th lens are biconvex positive power lens, 8th lens are biconvex positive power lens, 9th lens are biconvex positive power lens.Relative to prior art, the present invention can lift the image quality of camera lens, reduce volume, and the present invention possesses day and night with burnt function, can be to infrared light also into sharply defined image without focusing i.e. in the case where visible ray is into sharply defined image, therefore the present invention is fully able to the requirement for meeting 4K, possesses good market prospects.
Description
Technical field
The invention belongs to lens technology field, more particularly to a kind of ultra high-definition fish eye lens.
Background technology
Fish eye lens generally has more than 180 ° of the angle of visual field, therefore is widely used in overall view monitoring system.
Fish eye lens because the characteristic of its angle super large needs to introduce substantial amounts of barrel distortion, for common lens by
Smaller in distorting, the influence to imaging definition that distorts can be ignored, and fish eye lens its distortion is close to -100%, visual field
Edge image is greatly reduced, and causes edge angular resolution to reduce, and image expansion back edge obscures.Therefore fish-eye design
Strict control distortion is needed to improve the angular resolution of peripheral field, usual fish-eye focal length/image height<0.35 can just protect
Demonstrate,prove preferable edge angular resolution.
In general fish eye lens pixel is between 2,000,000 to 5,000,000 pixels at present, optics overall length mostly in more than 30mm,
Aperture is in F2.2 or so.With the rise of 4K concepts, people require camera lens to volume is smaller, pixel is higher, as matter preferably side
To development.
Obviously traditional fish eye lens can not meet the needs of 4K, therefore develop a small volume pixel energy and meet
The fish eye lens of 4K demands just seems necessary.
The present invention is intended to provide a kind of ultra high-definition fish eye lens, it uses 9 sheet glass eyeglasses, and the angle of visual field reaches 190 °, light
Learn overall length and be less than 27mm, its maximum ring reaches F1.6, it is seen that light resolution ratio reaches 12,000,000 pixels, and infrared resolution rate reaches
More than 800 mega pixels, the requirement for meeting 4K is fully able to, possesses good market prospects.
The content of the invention
It is an object of the invention to：In view of the shortcomings of the prior art, a kind of ultra high-definition fish eye lens is provided, it uses 9
Sheet glass eyeglass, the angle of visual field reach 190 °, and optics overall length is less than 27mm, and its maximum ring reaches F1.6, it is seen that light resolution ratio reaches
To 12,000,000 pixels, infrared resolution rate reaches more than 800 mega pixels, is fully able to the requirement for meeting 4K, possesses good city
Field prospect.
In order to achieve the above object, the present invention adopts the following technical scheme that：
A kind of ultra high-definition fish eye lens, including the first lens, the second lens, the 3rd saturating being arranged in order from the object side to the image side
Mirror, the 4th lens, the 5th lens, the 6th lens, the 7th lens, the 8th lens and the 9th lens, first lens are convex-concave
Negative-power lenses, second lens are plano-concave negative-power lenses, and the 3rd lens are convex-concave negative-power lenses, institute
It is convex flat positive power lens to state the 4th lens, and the 5th lens are plano-convex positive power lens, and the 6th lens are double
Recessed negative-power lenses, the 7th lens are biconvex positive power lens, and the 8th lens are biconvex positive power lens,
9th lens are biconvex positive power lens；First face of the second lens is arranged to put down (close to the face of the first lens)
Face so that the first lens and the second lens forming form of plane positioning, so as to greatly improve the stability of assembling, carry
The high assembling yield of camera lens.
The ratio of first lens to the focal length and the focal length of whole camera lens of the 9th lens meets following condition：
6<|f1/f|<8.5；
2<|f2/f|<4；
6<|f3/f|<8.5；
3.2<|f4/f|<5.3；
11<|f5/f|<16；
1.5<|f6/f|<3；
2.01<|f7/f|<3.98；
7.1<|f8/f|<9.6；
3.9<|f9/f|<6.2；
Wherein, f is the focal length of whole camera lens；F1 to f9 is focal length of first lens to the 9th lens respectively.
Improved as the fish-eye one kind of ultra high-definition of the present invention, the focal length of first lens to the 9th lens,
Refractive index meets following condition：
| -15.14≤f1≤-10.22 | 1.65≤n1≤1.9 |
| -6.51≤f2≤-3.92 | 1.65≤n2≤1.9 |
| -13.65≤f3≤-9.22 | 1.65≤n3≤1.9 |
| 5.41≤f4≤7.85 | 1.7≤n4≤1.96 |
| 18.62≤f5≤24.32 | 1.4≤n5≤1.6 |
| -4.35≤f6≤-2.51 | 1.65≤n6≤1.9 |
| 3.12≤f7≤5.33 | 1.55≤n7≤1.75 |
| 11.01≤f8≤14.23 | 1.4≤n8≤1.6 |
| 6.54≤f9≤9.12 | 1.55≤n9≤1.75 |
In upper table, " f " is focal length, and " n " is refractive index, and "-" number represents that direction is negative；
Wherein, f1 to f9 corresponds respectively to the first lens to the focal length of the 9th lens；It is saturating that n1 to n9 corresponds respectively to first
Mirror to the 9th lens refractive index.
As a kind of fish-eye improvement of ultra high-definition of the present invention, first lens and second lens are directly abutted against
Assembling, second lens and the 3rd lens pass through spacer ring close-fitting.
As a kind of fish-eye improvement of ultra high-definition of the present invention, the 3rd lens and the 4th lens pass through spacer ring
Close-fitting, the 4th lens and the 5th lens by spacer ring close-fitting, the 5th lens and the 6th lens by every
Close-fitting is enclosed, the 7th lens and the 8th lens are passed through by spacer ring close-fitting, the 8th lens and the 9th lens
Spacer ring close-fitting.
As a kind of fish-eye improvement of ultra high-definition of the present invention, the 6th lens and the 7th lens pass through optics
Glue bond.
Improved as the fish-eye one kind of ultra high-definition of the present invention, the one of close second lens of first lens
Half bore in face and the ratio D/R of spherical radius are 0.81, avoid that most fish eye lenses easily occur close to hemisphere
Or the situation of hemispherical, greatly improve the machinability of eyeglass.
As a kind of fish-eye improvement of ultra high-definition of the present invention, set between the 5th lens and the 6th lens
There is diaphragm.
Relative to prior art, the present invention uses 9 sheet glass eyeglasses, and the angle of visual field reaches 190 °, and optics overall length is less than 27mm,
Focal length/image height is 0.33, realizes large aperture by reasonable employment glass combination, its maximum ring reaches F1.6, and image quality is good
It is good, it is seen that light resolution ratio reaches 12,000,000 pixels, and so that infrared can also reach 8,000,000 pictures on the premise of not focusing on again
More than element, clearly bright monitored picture can be also realized under night low-light (level), temperature compensation function is provided simultaneously with, that is, exists
It can reach to use under -30~+80 DEG C of environment and not run Jiao.
In a word, the present invention can lift the image quality of camera lens, reduce volume, and the present invention possesses day and night with burnt work(
Can, i.e., can be to infrared light also into sharply defined image, therefore the present invention is entirely capable of without focusing in the case where visible ray is into sharply defined image
Enough meet 4K requirement, possess good market prospects.
Brief description of the drawings
Fig. 1 is the structural representation of the present invention.
Fig. 2 is the index path of the present invention.
Embodiment
The present invention and its advantage are described in further detail below with reference to specific embodiment, still, this hair
Bright embodiment is not limited thereto.
As depicted in figs. 1 and 2, a kind of ultra high-definition fish eye lens provided by the invention, including arrange successively from the object side to the image side
First lens 1 of row, 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
Eight lens 8 and the 9th lens 9, the first lens 1 are convex-concave negative-power lenses, and the second lens 2 are plano-concave negative-power lenses, the
Three lens 3 are convex-concave negative-power lenses, and the 4th lens 4 are convex flat positive power lens, and the 5th lens 5 are plano-convex positive light coke
Lens, the 6th lens 6 are concave-concave negative-power lenses, and the 7th lens 7 are biconvex positive power lens, and the 8th lens 8 are biconvex
Positive power lens, the 9th lens 9 are biconvex positive power lens；By first face of the second lens 2 (close to the first lens
Face) it is arranged to plane so that and the first lens 1 and the second lens 2 form the form with plane positioning, so as to greatly improve dress
The stability matched somebody with somebody, improve the assembling yield of camera lens.In the present invention, the lens 9 of the first lens 1 to the 9th are that glass sphere is saturating
Mirror.
The ratio of the focal length of the lens 9 of first lens 1 to the 9th and the focal length of whole camera lens meets following condition：
6<|f1/f|<8.5；
2<|f2/f|<4；
6<|f3/f|<8.5；
3.2<|f4/f|<5.3；
11<|f5/f|<16；
1.5<|f6/f|<3；
2.01<|f7/f|<3.98；
7.1<|f8/f|<9.6；
3.9<|f9/f|<6.2；
Wherein, f is the focal length of whole camera lens；F1 to f9 is focal length of first lens to the 9th lens respectively.
Wherein, the focal length of the lens 9 of the first lens 1 to the 9th, refractive index meet following condition：
| -15.14≤f1≤-10.22 | 1.65≤n1≤1.9 |
| -6.51≤f2≤-3.92 | 1.65≤n2≤1.9 |
| -13.65≤f3≤-9.22 | 1.65≤n3≤1.9 |
| 5.41≤f4≤7.85 | 1.7≤n4≤1.96 |
| 18.62≤f5≤24.32 | 1.4≤n5≤1.6 |
| -4.35≤f6≤-2.51 | 1.65≤n6≤1.9 |
| 3.12≤f7≤5.33 | 1.55≤n7≤1.75 |
| 11.01≤f8≤14.23 | 1.4≤n8≤1.6 |
| 6.54≤f9≤9.12 | 1.55≤n9≤1.75 |
In upper table, " f " is focal length, and " n " is refractive index, and "-" number represents that direction is negative；
Wherein, f1 to f9 corresponds respectively to the focal length of the lens 9 of the first lens 1 to the 9th；N1 to n9 corresponds respectively to first
The refractive index of the lens 9 of lens 1 to the 9th.
First lens 1 and the second lens 2 are directly abutted against assembling, and the second lens 2 and the 3rd lens 3 pass through spacer ring close-fitting.
3rd lens 3 and the 4th lens 4 by spacer ring close-fitting, the 4th lens 4 and the 5th lens 5 by spacer ring close-fitting,
Five lens 5 and the 6th lens 6 pass through spacer ring close-fitting, the 8th lens 8 and by spacer ring close-fitting, the 7th lens 7 and the 8th lens 8
Nine lens 9 pass through spacer ring close-fitting.
6th lens 6 and the 7th lens 7 pass through optics glue bond.
Diaphragm is provided between 5th lens 5 and the 6th lens 6.
Half bore of the one side close to the second lens 2 of the first lens 1 and the ratio D/R of spherical radius are 0.81, are avoided
Most fish eye lenses easily occur close to hemisphere or the situation of hemispherical, greatly improve processing for eyeglass
Property.
In a word, the present invention uses 9 sheet glass eyeglasses, and the angle of visual field reaches 190 °, and optics overall length is less than 27mm, focal length/image height
For 0.33, large aperture is realized by reasonable employment glass combination, its maximum ring reaches F1.6, and image quality is good, it is seen that light
Resolution ratio reaches 12,000,000 pixels, and so that infrared can also reach more than eight mega pixels on the premise of not focusing on again, i.e.,
Make also realize clearly bright monitored picture under night low-light (level), be provided simultaneously with temperature compensation function, i.e., can reach
Used under -30~+80 DEG C of environment and do not run Jiao.
In a word, the present invention can lift the image quality of camera lens, reduce volume, and the present invention possesses day and night with burnt work(
Can, i.e., can be to infrared light also into sharply defined image, therefore the present invention is entirely capable of without focusing in the case where visible ray is into sharply defined image
Enough meet 4K requirement, possess good market prospects.
Embodiment 1
The face type in totally ten eight faces, radius of curvature, lens thickness, eyeglass spacing and the eyeglass refraction of nine lens of the camera lens
Rate meets following condition respectively：
Table 1：The physical parameter of nine lens.
In upper table, " R " is radius of curvature, and "-" number represents that direction is negative, and " PL " represents plane, and upper table the same face sequence number was both
Have refractive index data n, there is data D, data D to represent the thickness of the lens axis line location again, the same face sequence number there was only data D and
There is no refractive index data n, data D to represent the lens to the spacing of next lens face.
The announcement and teaching of book according to the above description, those skilled in the art in the invention can also be to above-mentioned embodiment party
Formula carries out appropriate change and modification.Therefore, the invention is not limited in embodiment disclosed and described above, to this
Some modifications and changes of invention should also be as falling into the scope of the claims of the present invention.In addition, although this specification
In used some specific terms, but these terms are merely for convenience of description, do not form any restrictions to the present invention.
Claims (7)
- A kind of 1. fish eye lens, it is characterised in that：Including be arranged in order from the object side to the image side the first lens, the second lens, Three lens, the 4th lens, the 5th lens, the 6th lens, the 7th lens, the 8th lens and the 9th lens, first lens are Convex-concave negative-power lenses, second lens are plano-concave negative-power lenses, and the 3rd lens are that convex-concave negative power is saturating Mirror, the 4th lens are convex flat positive power lens, and the 5th lens are plano-convex positive power lens, the 6th lens For concave-concave negative-power lenses, the 7th lens are biconvex positive power lens, and the 8th lens are biconvex positive light coke Lens, the 9th lens are biconvex positive power lens；The ratio of first lens to the focal length and the focal length of whole camera lens of the 9th lens meets following condition：6<|f1/f|<8.5；2<|f2/f|<4；6<|f3/f|<8.5；3.2<|f4/f|<5.3；11<|f5/f|<16；1.5<|f6/f|<3；2.01<|f7/f|<3.98；7.1<|f8/f|<9.6；3.9<|f9/f|<6.2；Wherein, f is the focal length of whole camera lens；F1 to f9 is focal length of first lens to the 9th lens respectively.
- 2. fish eye lens according to claim 1, it is characterised in that：First lens to the 9th lens Jiao Meet following condition away from, refractive index：
-15.14≤f1≤-10.22 1.65≤n1≤1.9 -6.51≤f2≤-3.92 1.65≤n2≤1.9 -13.65≤f3≤-9.22 1.65≤n3≤1.9 5.41≤f4≤7.85 1.7≤n4≤1.96 18.62≤f5≤24.32 1.4≤n5≤1.6 -4.35≤f6≤-2.51 1.65≤n6≤1.9 3.12≤f7≤5.33 1.55≤n7≤1.75 11.01≤f8≤14.23 1.4≤n8≤1.6 6.54≤f9≤9.12 1.55≤n9≤1.75 In upper table, " f " is focal length, and " n " is refractive index, and "-" number represents that direction is negative；Wherein, f1 to f9 corresponds respectively to the first lens to the focal length of the 9th lens；N1 to n9 corresponds respectively to the first lens extremely The refractive index of 9th lens. - 3. fish eye lens according to claim 1, it is characterised in that：First lens and second lens are directly tight By assembling, second lens and the 3rd lens pass through spacer ring close-fitting.
- 4. fish eye lens according to claim 3, it is characterised in that：3rd lens and the 4th lens by every Close-fitting is enclosed, the 4th lens and the 5th lens are passed through by spacer ring close-fitting, the 5th lens and the 6th lens Spacer ring close-fitting, the 7th lens and the 8th lens are led to by spacer ring close-fitting, the 8th lens and the 9th lens Cross spacer ring close-fitting.
- 5. fish eye lens according to claim 1, it is characterised in that：6th lens and the 7th lens pass through light Learn glue bond.
- 6. fish eye lens according to claim 1, it is characterised in that：Close second lens of first lens Half bore and the ratio D/R of spherical radius simultaneously is 0.81.
- 7. fish eye lens according to claim 1, it is characterised in that：Set between 5th lens and the 6th lens It is equipped with diaphragm.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610013065.9A CN105607234B (en) | 2016-01-07 | 2016-01-07 | A kind of fish eye lens |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610013065.9A CN105607234B (en) | 2016-01-07 | 2016-01-07 | A kind of fish eye lens |
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| CN105607234A CN105607234A (en) | 2016-05-25 |
| CN105607234B true CN105607234B (en) | 2017-12-22 |
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Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106707469B (en) * | 2016-10-13 | 2022-09-16 | 中国科学院上海技术物理研究所 | Large-view-field fish-eye optical system of infrared short waves |
| CN106932888B (en) * | 2016-12-24 | 2022-08-16 | 舜宇光学(中山)有限公司 | 360-degree panoramic fisheye lens |
| CN107045183B (en) * | 2017-05-26 | 2023-05-16 | 东莞市宇瞳光学科技股份有限公司 | Athermalized wide working distance 6MP machine vision lens |
| CN106990509B (en) * | 2017-05-27 | 2022-09-13 | 深圳市东正光学技术股份有限公司 | Panoramic fish-eye lens |
| CN110291436B (en) * | 2018-01-26 | 2022-04-05 | 深圳市大疆创新科技有限公司 | Wide-angle lens, imaging device and unmanned aerial vehicle |
| KR20200084181A (en) | 2019-01-02 | 2020-07-10 | 삼성전기주식회사 | Image Capturing Lens System |
| CN112014955B (en) * | 2020-10-14 | 2021-01-29 | 瑞泰光学(常州)有限公司 | Image pickup optical lens |
| CN113253426B (en) * | 2021-05-26 | 2022-11-18 | 天津欧菲光电有限公司 | Optical system, lens module and electronic equipment |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101210999B (en) * | 2006-12-26 | 2012-05-23 | 福建省光电子技术重点实验室 | 360 degree panoramic television pick-up lens |
| CN100538426C (en) * | 2007-11-23 | 2009-09-09 | 秦皇岛视听机械研究所 | The whole spherical ball-screen projection of digital projector ultra-large vision field cowfish glasses header structure |
| JP5369867B2 (en) * | 2009-04-24 | 2013-12-18 | 株式会社リコー | Wide angle lens and imaging device |
| CN202615024U (en) * | 2012-01-20 | 2012-12-19 | 广州长步道光电科技有限公司 | Double-wave band ultra-wide-angle zoom lens |
| CN104076490B (en) * | 2014-06-28 | 2017-04-26 | 青岛歌尔声学科技有限公司 | Wide-angle distortion-removing dual-band confocal optical lens |
| CN105182507B (en) * | 2015-10-28 | 2017-06-23 | 东莞市宇瞳光学科技股份有限公司 | A kind of wide-angle tight shot |
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