CN103293640A - Fish-eye lens with field angle of 185 degrees - Google Patents
Fish-eye lens with field angle of 185 degrees Download PDFInfo
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- CN103293640A CN103293640A CN2012100416357A CN201210041635A CN103293640A CN 103293640 A CN103293640 A CN 103293640A CN 2012100416357 A CN2012100416357 A CN 2012100416357A CN 201210041635 A CN201210041635 A CN 201210041635A CN 103293640 A CN103293640 A CN 103293640A
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- eye lens
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Abstract
The invention discloses a fish-eye lens with a field angle of 185 degrees. The fish-eye lens comprises a support, a lens G1, a lens G2, a lens G3, a lens G4, a lens G5, a lens G6, a lens G7, a lens G8, a lens G9, a lens G10 and a lens G11, wherein the lens G1, the lens G2, the lens G3, the lens G4, the lens G5, the lens G6, the lens G7, the lens G8, the lens G9, the lens G10 and the lens G11 are sequentially arrayed inside the support. According to the fish-eye lens with the field angle of 185 degrees, under the premise that a large aperture is guaranteed, the structure is further simplified relatively, the field angle of the fish-eye lens is improved, the focal power is reasonably distributed, so that the structural geometry size is reasonable, and manufacturing and production are easy.
Description
?
Technical field
The present invention relates to a kind of photographic goods, particularly a kind of fish eye lens of 185 ° of field angle.
Background technology
Fish eye lens is very special a kind of in all optical lens classifications, belongs to f θ camera lens, generally is used for 120
0To 180
0The shooting of visual field environment and projection, image-forming principle are " non-similar imaging ", namely by introducing quantitatively " distortion ", produce greatly instead more than, increase camera lens visual field.Different applications, fish-eye structural parameters be mouthful applied environment parameter difference not.Last century the seventies, fish eye lens at first occurs in film industry, is used for taking and showing ball curtain (also the claiming the vault curtain) film of 35mm and 70mm film, thereby has caused the prelude that fish eye lens is widely used.Fish eye lens in the market comprises photography (shooting), monitoring and projection lens, its field angle is all about 180 °, the relative aperture of its camera lens is all between D/f'=112.8 ~ 115.6 (D is that the sleeping radius of camera lens, f' are focal length) also, and the large aperture big field angle fish eye lens reason of holding concurrently simultaneously not occurring three; The one, limited by concrete request for utilization, the 2nd, be subjected to the restriction of design difficulty and design software, the 3rd, even find ultra-large vision field cowfish glasses header structure once in a while, its optical aberration is also well optimized and is controlled, and mostly cause expensive owing to its processability of product structure difference or can't volume production, and do not have Practical significance.
Summary of the invention
Goal of the invention: at the deficiencies in the prior art, the invention discloses under the wide-aperture prerequisite of a kind of guarantee, further relative simplified structure, promote fish-eye field angle, and by reasonably distributing focal power, make geometrical scale reasonable, be easy to processing, have the fish eye lens of 185 ° of field angle of good Practical significance.
Technical scheme: the fish eye lens that the invention discloses a kind of 185 ° of field angle, comprise support, be arranged on lens G1, the lens G2, lens G3, lens G4, lens G5, lens G6, lens G7, lens G8, lens G9, lens G10 and the lens G11 that are arranged in order in the support.
Wherein, lens G1, G2 are half-sphere mirror.
Wherein, lens G3 is the bi-concave mirror.
Wherein, lens G4, G7, G8, G10 are the biconvex mirrors.
Wherein, lens G5, G6, G9 are the first quarter moon mirrors.
Wherein, G11 is convex mirror.
This camera lens basic structure can derive for photograph, shooting, monitoring, projection, its parameter area of projection fish eye lens: 185 ° of focal distance f=1.8mm of field angle; Maximum ring Fno=1.4.
Since have the field angle of super large, bigger relative aperture, super large instead more than with good aberration coupling, can realize shooting and the supervision of single-lens ultraphotic angle and intimate universe, marine site and region in a lot of applications, also the ball curtain that can be used for the pairing approximation whole world carries out deformation controlled image equidistant projection and projection, and guarantees the clear and beautiful of picture.Simultaneously, this compact conformation is successfully eliminated the drawback that lens edge is born thickness, is highly susceptible to processing, has Practical significance.
Beneficial effect: the fish eye lens of 185 ° of field angle disclosed by the invention ensures under the wide-aperture prerequisite further relative simplified structure, promote fish-eye field angle, and by reasonably distributing focal power, make geometrical scale reasonable, be easy to processing.
Description of drawings
Accompanying drawing 1 is fish-eye structural representation.
Embodiment
Below in conjunction with accompanying drawing the present invention is further explained.
The invention discloses a kind of fish eye lens of 185 ° of field angle, comprise support 1, be arranged on lens G1, the lens G2, lens G3, lens G4, lens G5, lens G6, lens G7, lens G8, lens G9, lens G10 and the lens G11 that are arranged in order in the support 1.
Wherein, lens G1, G2 are half-sphere mirror.
Wherein, lens G3 is the bi-concave mirror.
Wherein, lens G4, G7, G8, G10 are the biconvex mirrors.
Wherein, lens G5, G6, G9 are the first quarter moon mirrors.
Wherein, G11 is convex mirror.
This camera lens basic structure can derive for photograph, shooting, monitoring, projection, its parameter area of projection fish eye lens: 185 ° of focal distance f=1.8mm of field angle; Maximum ring Fno=1.4.
Since have the field angle of super large, bigger relative aperture, super large instead more than with good aberration coupling, can realize shooting and the supervision of single-lens ultraphotic angle and intimate universe, marine site and region in a lot of applications, also the ball curtain that can be used for the pairing approximation whole world carries out deformation controlled image equidistant projection and projection, and guarantees the clear and beautiful of picture.Simultaneously, this compact conformation is successfully eliminated the drawback that lens edge is born thickness, is highly susceptible to processing, has Practical significance.
The invention provides a kind of fish-eye thinking and method of 185 ° of field angle; method and the approach of this technical scheme of specific implementation are a lot; the above only is preferred implementation of the present invention; should be understood that; for those skilled in the art; under the prerequisite that does not break away from the principle of the invention; can also make some improvements and modifications; these improvements and modifications also should be considered as protection scope of the present invention, in the present embodiment not clear and definite each ingredient all available prior art realized.
Claims (6)
1. the fish eye lens of 185 ° of field angle, it is characterized in that, comprise support (1), be arranged on the lens (G1), lens (G2), lens (G3), lens (G4), lens (G5), lens (G6), lens (G7), lens (G8), lens (G9), lens (G10) and the lens (G11) that are arranged in order in the support (1).
2. the fish eye lens of a kind of 185 ° of field angle according to claim 1 is characterized in that, lens (G1), (G2) are half-sphere mirror.
3. the fish eye lens of a kind of 185 ° of field angle according to claim 1 is characterized in that, lens (G3) are the bi-concave mirrors.
4. the fish eye lens of a kind of 185 ° of field angle according to claim 1 is characterized in that, lens (G4), (G7), (G8), (G10) are the biconvex mirrors.
5. the fish eye lens of a kind of 185 ° of field angle according to claim 1 is characterized in that, lens (G5), (G6), (G9) are the first quarter moon mirrors.
6. the fish eye lens of a kind of 185 ° of field angle according to claim 1 is characterized in that, (G11) is convex mirror.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100416357A CN103293640A (en) | 2012-02-23 | 2012-02-23 | Fish-eye lens with field angle of 185 degrees |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100416357A CN103293640A (en) | 2012-02-23 | 2012-02-23 | Fish-eye lens with field angle of 185 degrees |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103293640A true CN103293640A (en) | 2013-09-11 |
Family
ID=49094823
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012100416357A Pending CN103293640A (en) | 2012-02-23 | 2012-02-23 | Fish-eye lens with field angle of 185 degrees |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103293640A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105974562A (en) * | 2016-07-20 | 2016-09-28 | 广东弘景光电科技股份有限公司 | Fisheye monitoring optical system and applied lens thereof |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050219714A1 (en) * | 2004-03-31 | 2005-10-06 | Fujinon Corporation | Fisheye lens and imaging device using it |
-
2012
- 2012-02-23 CN CN2012100416357A patent/CN103293640A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050219714A1 (en) * | 2004-03-31 | 2005-10-06 | Fujinon Corporation | Fisheye lens and imaging device using it |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105974562A (en) * | 2016-07-20 | 2016-09-28 | 广东弘景光电科技股份有限公司 | Fisheye monitoring optical system and applied lens thereof |
| CN105974562B (en) * | 2016-07-20 | 2018-08-28 | 广东弘景光电科技股份有限公司 | Flake monitors the camera lens of optical system and its application |
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| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
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| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20130911 |