CN110441892A - A kind of low distortion miniaturization high-resolution FISH EYE LENS OPTICS system - Google Patents
A kind of low distortion miniaturization high-resolution FISH EYE LENS OPTICS system Download PDFInfo
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- CN110441892A CN110441892A CN201910712900.1A CN201910712900A CN110441892A CN 110441892 A CN110441892 A CN 110441892A CN 201910712900 A CN201910712900 A CN 201910712900A CN 110441892 A CN110441892 A CN 110441892A
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- 239000000571 coke Substances 0.000 claims abstract description 13
- 230000003287 optical effect Effects 0.000 claims description 52
- 239000000463 material Substances 0.000 claims description 22
- 239000005308 flint glass Substances 0.000 claims description 14
- 229910052746 lanthanum Inorganic materials 0.000 claims description 8
- FZLIPJUXYLNCLC-UHFFFAOYSA-N lanthanum atom Chemical compound [La] FZLIPJUXYLNCLC-UHFFFAOYSA-N 0.000 claims description 8
- 230000000007 visual effect Effects 0.000 claims description 8
- 102220616555 S-phase kinase-associated protein 2_E48R_mutation Human genes 0.000 claims description 3
- 238000009738 saturating Methods 0.000 claims description 3
- 239000011521 glass Substances 0.000 claims description 2
- 239000004575 stone Substances 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 8
- 238000013461 design Methods 0.000 description 9
- 238000003384 imaging method Methods 0.000 description 8
- 230000004075 alteration Effects 0.000 description 7
- 230000006872 improvement Effects 0.000 description 6
- 238000012937 correction Methods 0.000 description 3
- 238000009826 distribution Methods 0.000 description 3
- 241000251468 Actinopterygii Species 0.000 description 2
- 201000009310 astigmatism Diseases 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000012546 transfer Methods 0.000 description 2
- 206010010071 Coma Diseases 0.000 description 1
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 229910052747 lanthanoid Inorganic materials 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 230000003595 spectral effect Effects 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
Classifications
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B1/00—Optical elements characterised by the material of which they are made; Optical coatings for optical elements
-
- 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
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B13/00—Optical objectives specially designed for the purposes specified below
- G02B13/18—Optical objectives specially designed for the purposes specified below with lenses having one or more non-spherical faces, e.g. for reducing geometrical aberration
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Lenses (AREA)
Abstract
The present invention relates to a kind of low distortion to minimize high-resolution FISH EYE LENS OPTICS system, including front lens group, diaphragm, rear lens group and the image planes set gradually from front to back along light incident direction；The front lens group includes the first lens, the second lens and the third lens set gradually from front to back；Rear lens group includes the 4th lens, the 5th lens and the 6th lens set gradually from front to back；4th lens and the 5th lens group are at cemented doublet, first lens are falcate negative power spherical lens, second lens are falcate negative power spherical lens, the third lens are falcate positive light coke spherical lens, 4th lens are biconvex positive light coke spherical lens, 5th lens are falcate negative power spherical lens, and the 6th lens are falcate positive light coke non-spherical lens.The present invention can realize the effect of low distortion by relatively simple structure and lesser size.
Description
Technical field
The present invention relates to optical image technology fields, minimize high-resolution flake more specifically to a kind of low distortion
Lens optical system.
Background technique
FISH EYE LENS OPTICS system has the field angle near or above 180 °, can obtain super large-scale Scenery Imaging
And it is widely used in the fields such as security protection, monitoring.
FISH EYE LENS OPTICS system pursues the performance indicator of ultra-large vision field, high-resolution and small light, but existing suitable
There is the defects of structure is complex, and size is larger mostly in the FISH EYE LENS OPTICS system for panorama camera.With people couple
The promotion of panoramic imagery image property demand, other than realizing high-resolution imaging, it is desirable that silent frame image realizes low distortion, with suitable
Subsequent electronic image rectification algorithm is answered to obtain the low distortion image of more preferably visual experience effect.But existing FISH EYE LENS OPTICS system
System haves the defects that distortion is big.
A kind of current low distortion of market in urgent need minimizes high-resolution FISH EYE LENS OPTICS system, can be by relatively simple
Structure and lesser size realize the effect of low distortion.
Summary of the invention
Aiming at the problems existing in the prior art, the present invention provides a kind of low distortion miniaturization high-resolution fish eye lens light
System.Only with a piece of non-spherical lens, lens numbers are few, imaging image quality is excellent, compact-sized, and the distortion of silent frame is big
Width reduces, and is beneficial to promote the application level of panorama camera optical system.
The solution that the present invention solves its technical problem is: proposing a kind of low distortion miniaturization high-resolution fish eye lens
Optical system, including front lens group, diaphragm, rear lens group and the image planes set gradually from front to back along light incident direction；
The front lens group includes the first lens, the second lens and the third lens set gradually from front to back；
The rear lens group includes the 4th lens, the 5th lens and the 6th lens set gradually from front to back；
At cemented doublet, first lens are falcate negative power spherical surface for 4th lens and the 5th lens group
Lens, second lens are falcate negative power spherical lens, and the third lens are that falcate positive light coke spherical surface is saturating
Mirror, the 4th lens are biconvex positive light coke spherical lens, and the 5th lens are falcate negative power spherical lens, institute
Stating the 6th lens is falcate positive light coke non-spherical lens.
As a further improvement of the above technical scheme, the focal power of the front lens group is φ A, the rear lens group
Focal power is φ B, and the focal power of entire optical system is φ, and following relationship is met between the φ A, φ B and φ:
-0.18≤φA/φ≤-0.12；
0.40≤φB/φ≤0.48。
As a further improvement of the above technical scheme, the third lens are the first optics close to the optical surface of diaphragm
Face, the 4th lens are the second optical surface close to the optical surface of diaphragm, the rim ray of visual field on the axis of the optical system
It is h1 in the height value of first optical surface, the rim ray of visual field is in second optical surface on the axis of the optical system
Height value be h2, wherein h1 and h2 ratio meet:
0.92≤h1/h2≤0.98。
As a further improvement of the above technical scheme, the centre distance of the diaphragm and the third lens is L1, institute
The centre distance of diaphragm and the 4th lens is stated to meet for the ratio of L2, the L1 and L2:
0.52≤L1/L2≤0.75。
As a further improvement of the above technical scheme, the material of first lens is attached most importance to lanthanum flint glass, and described
The material of two lens is lanthanum flint glass, and the material of the third lens is dense flint glass, and the material of the 4th lens is
Heavy-lanthanide flint glass, the material of the 5th lens are dense flint glass, and the material of the 6th lens is E48R material.
As a further improvement of the above technical scheme, total focal power of the optical system is φ, first lens
Focal power be φ A1, second power of lens is φ A2, and the focal powers of the third lens is φ A3, the described 4th
The combination focal power of lens and the 5th lens is φ B12, and the 6th power of lens is φ B3, the φ, φ A1,
φ A2, φ A3, φ B12 and φ B3 meet following relationship:
-0.22≤φA1/φ≤-0.18；
-0.51≤φA2/φ≤-0.45；
0.28≤φA3/φ≤0.35；
0.25≤φB12/φ≤0.32；
0.20≤φB3/φ≤0.24。
As a further improvement of the above technical scheme, further include optical filter, the optical filter be set to the image planes with
Between the rear lens group.
The beneficial effects of the present invention are: optical system length of the present invention only 8.2mm, size substantially shortens under same index,
The Miniaturization Design for being conducive to panorama camera enriches the application scenarios of panorama camera；Figure is realized by relatively simple structure
The small imaging effect of image distortion；Using one piece of non-spherical lens, aberration correcting capability is improved.
Detailed description of the invention
To describe the technical solutions in the embodiments of the present invention more clearly, make required in being described below to embodiment
Attached drawing is briefly described.Obviously, described attached drawing is a part of the embodiments of the present invention, rather than is all implemented
Example, those skilled in the art without creative efforts, can also be obtained according to these attached drawings other designs
Scheme and attached drawing.
Fig. 1 is the light channel structure schematic diagram of optical system of the present invention；
Fig. 2 is the optical transfer function curve of optical system of the present invention；
Fig. 3 is distortion distribution curve of the optical system of the present invention in full filed.
Specific embodiment
It is carried out below with reference to technical effect of the embodiment and attached drawing to design of the invention, specific structure and generation clear
Chu, complete description, to be completely understood by the purpose of the present invention, feature and effect.Obviously, described embodiment is this hair
Bright a part of the embodiment, rather than whole embodiments, based on the embodiment of the present invention, those skilled in the art are not being paid
Other embodiments obtained, belong to the scope of protection of the invention under the premise of creative work.In addition, be previously mentioned in text
All connection relationships not singly refer to that component directly connects, and referring to can be according to specific implementation situation, by adding or reducing connection
Auxiliary, Lai Zucheng more preferably connection structure.Each technical characteristic in the invention, under the premise of not conflicting conflict
It can be with combination of interactions.
Embodiment 1 proposes a kind of low distortion miniaturization high-resolution FISH EYE LENS OPTICS system, including along light referring to Fig.1
Front lens group, diaphragm 700, rear lens group and the image planes 800 that line incident direction is set gradually from front to back；
The front lens group includes the first lens 100, the second lens 200 and the third lens set gradually from front to back
300；
The rear lens group includes the 4th lens 400, the 5th lens 500 and the 6th lens set gradually from front to back
600；
4th lens 400 and the 5th lens 500 form cemented doublet, and first lens 100 are negative for falcate
Focal power spherical lens, second lens 200 are falcate negative power spherical lens, and the third lens 300 are bent moon
Shape positive light coke spherical lens, the 4th lens 400 are biconvex positive light coke spherical lens, and the 5th lens 500 are curved
Month shape negative power spherical lens, the 6th lens 600 are falcate positive light coke non-spherical lens.
As the preferred embodiment of this programme, the focal power of the front lens group is φ A, the light focus of the rear lens group
Degree is φ B, and the focal power of entire optical system is φ, and following relationship is met between the φ A, φ B and φ:
-0.18≤φA/φ≤-0.12；
0.40≤φB/φ≤0.48。
As the preferred embodiment of this programme, the third lens 300 are the first optics close to the optical surface of diaphragm 700
Face, the 4th lens 400 are the second optical surface close to the optical surface of diaphragm 700, the side of visual field on the axis of the optical system
Edge light is h1 in the height value of first optical surface, and the rim ray of visual field is described second on the axis of the optical system
The height value of optical surface is h2, and wherein the ratio of h1 and h2 meets:
0.92≤h1/h2≤0.98。
As the preferred embodiment of this programme, the centre distance of the diaphragm 700 and the third lens 300 is L1,
The centre distance of the diaphragm 700 and the 4th lens 400 is that the ratio of L2, the L1 and L2 meet:
0.52≤L1/L2≤0.75。
As the preferred embodiment of this programme, the material of first lens 100 is attached most importance to lanthanum flint glass, and described second
The material of lens 200 is lanthanum flint glass, and the material of the third lens 300 is dense flint glass, the 4th lens 400
Material is attached most importance to lanthanum flint glass, and the material of the 5th lens 500 is dense flint glass, and the material of the 6th lens 600 is
E48R material.The aspherical face type of the 6th lens 600 described in this programme meets following high order aspheric surface rise equation:
In formula, c is radius of curvature, and y is radial coordinate, and k is circular cone conic constant, and A~G is respectively different rank institute
Corresponding coefficient (parameter that the coefficient of different rank is specific aspherical face type), can calculate aspheric by above equation
The rise Z of face any position.
As the preferred embodiment of this programme, total focal power of the optical system is φ, first lens 100
Focal power is φ A1, and the focal power of second lens 200 is φ A2, and the focal power of the third lens 300 is φ A3, described
The combination focal power of 4th lens 400 and the 5th lens 500 is φ B12, and the focal power of the 6th lens 600 is φ
B3, the φ, φ A1, φ A2, φ A3, φ B12 and φ B3 meet following relationship:
-0.22≤φA1/φ≤-0.18；
-0.51≤φA2/φ≤-0.45；
0.28≤φA3/φ≤0.35；
0.25≤φB12/φ≤0.32；
0.20≤φB3/φ≤0.24。
It further include optical filter 900 as the preferred embodiment of this programme, the optical filter 900 is set to the image planes
Between 800 and the rear lens group.In the present embodiment by adding optical filter 900, energy between image planes 800 and rear lens group
Enough ranges as needed obtain spectrum, set the spectral region of acquisition as 436nm~656nm in the present embodiment.
The design parameter of the low distortion miniaturization high-resolution FISH EYE LENS OPTICS system of this programme is following:
Focal length 0.92mm；Relative aperture D/f is 1/2.2；Field angle is 210 °；Optical system overall length 8.2mm, back work distance
It is 1.80mm from (with a distance from the 6th lens 600 to image planes 800).
Optical system of the present invention uses the optical texture pattern of anti-long distance, since imaging viewing field reaches 210 ° or more, for drop
Low ultra-large vision field bring visual field aberration such as astigmatism and the curvature of field, front lens group use the saturating of two negative powers in front end
Mirror (the first lens 100 and the second lens 200), obtains biggish chief ray multiplying power reciprocal value, to reduce rear lens group picture
The pressure of difference correction.
Emphasis of the present invention considers the Miniaturization Design that highly compact is realized under the premise of guaranteeing high image quality and low
The design of distortion, to carry out corresponding innovative design.Firstly, when optical system length shortens, the light of each group lens
Focal power increases, and causes the various aberrations such as spherical aberration, coma, astigmatism, distortion to increase sharply, optical system picture element is caused to decline.This hair
The bright compact design in order to realize ultra-wide angle optical system, by the reasonable distribution of focal power and the optimum choice of optical material,
Various aberrations are carried out with more perfect correction, to obtain high imaging quality while shortening optical system size.
Secondly, the present invention has studied the bearing calibration to distort under ultra-large vision field, forward and backward lens group focal power carried out compared with
Big mistake symmetrical distribution, front lens group use negative focal power pattern, and rear lens group uses biggish positive light coke pattern, In
Caused distortion aberration when infinite distance imaging is corrected on the basis of this.
In the present invention, as shown in Fig. 2, in 360lp/mm, full filed average transfer functions value reaches 0.25, guarantees
Image quality is parsed in high-resolution.As shown in Fig. 3, the distortion of full filed is no more than 10%, reduces the compression of edge image,
Be conducive to the image effect for realizing low distortion using subsequent correction algorithm, be improved particularly the image quality of edge image.
Optical system length of the present invention only 8.2mm, size substantially shortens under same index, is conducive to the small-sized of panorama camera
Change design, enriches the application scenarios of panorama camera；Full filed transmission function average value reaches 0.25@360lp/mm, realizes
Excellent image quality；Full filed distortion is no more than 10%, realizes the small imaging effect of image fault；Using one piece of plastics aspheric
Face lens (the 6th lens 600), both improve aberration correcting capability, and low in cost compared with glass aspheric lenses, favorably
In mass production.
Better embodiment of the invention is illustrated above, but the invention is not limited to the implementation
Example, those skilled in the art can also make various equivalent modifications on the premise of without prejudice to spirit of the invention or replace
It changes, these equivalent variation or replacement are all included in the scope defined by the claims of the present application.
Claims (7)
1. a kind of low distortion minimizes high-resolution FISH EYE LENS OPTICS system, which is characterized in that including along light incident direction
Front lens group, diaphragm, rear lens group and the image planes set gradually from front to back；
The front lens group includes the first lens, the second lens and the third lens set gradually from front to back；
The rear lens group includes the 4th lens, the 5th lens and the 6th lens set gradually from front to back；
At cemented doublet, first lens are that falcate negative power spherical surface is saturating for 4th lens and the 5th lens group
Mirror, second lens are falcate negative power spherical lens, and the third lens are falcate positive light coke spherical lens,
4th lens are biconvex positive light coke spherical lens, and the 5th lens are falcate negative power spherical lens, described
6th lens are falcate positive light coke non-spherical lens.
2. the low distortion of one kind according to claim 1 minimizes high-resolution FISH EYE LENS OPTICS system, it is characterised in that:
The focal power of the front lens group is φ A, and the focal power of the rear lens group is φ B, and the focal power of entire optical system is φ,
Meet following relationship between the φ A, φ B and φ:
-0.18≤φA/φ≤-0.12；
0.40≤φB/φ≤0.48。
3. the low distortion of one kind according to claim 1 minimizes high-resolution FISH EYE LENS OPTICS system, it is characterised in that:
The third lens are the first optical surface close to the optical surface of diaphragm, and the 4th lens are the second light close to the optical surface of diaphragm
Face, the rim ray of visual field is h1, the optical system in the height value of first optical surface on the axis of the optical system
The rim ray of visual field is h2 in the height value of second optical surface on the axis of system, and wherein the ratio of h1 and h2 meets:
0.92≤h1/h2≤0.98。
4. the low distortion of one kind according to claim 1 minimizes high-resolution FISH EYE LENS OPTICS system, it is characterised in that:
The centre distance of the diaphragm and the third lens is L1, and the centre distance of the diaphragm and the 4th lens is L2, institute
The ratio for stating L1 and L2 meets:
0.52≤L1/L2≤0.75。
5. the low distortion of one kind according to claim 1 minimizes high-resolution FISH EYE LENS OPTICS system, it is characterised in that:
The material of first lens is attached most importance to lanthanum flint glass, and the material of second lens is lanthanum flint glass, the third lens
Material be dense flint glass, the material of the 4th lens is attached most importance to lanthanum flint glass, and the material of the 5th lens is attached most importance to fire
Stone glass, the material of the 6th lens are E48R material.
6. the low distortion of one kind according to claim 2 minimizes high-resolution FISH EYE LENS OPTICS system, it is characterised in that:
Total focal power of the optical system is φ, and first power of lens is φ A1, and second power of lens is
φ A2, the focal powers of the third lens are φ A3, and the combination focal power of the 4th lens and the 5th lens is φ
B12, the 6th power of lens are φ B3, and the φ, φ A1, φ A2, φ A3 and φ B12 meet following relationship:
-0.22≤φA1/φ≤-0.18；
-0.51≤φA2/φ≤-0.45；
0.28≤φA3/φ≤0.35；
0.25≤φB12/φ≤0.32；
0.20≤φB3/φ≤0.24。
7. the low distortion of one kind according to claim 1 minimizes high-resolution FISH EYE LENS OPTICS system, it is characterised in that:
It further include optical filter, the optical filter is set between the image planes and the rear lens group.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910712900.1A CN110441892B (en) | 2019-08-02 | 2019-08-02 | Low-distortion miniaturized high-resolution fisheye lens optical system |
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|---|---|---|---|
| CN201910712900.1A CN110441892B (en) | 2019-08-02 | 2019-08-02 | Low-distortion miniaturized high-resolution fisheye lens optical system |
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| CN110441892B CN110441892B (en) | 2024-02-13 |
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Cited By (1)
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| CN115097597A (en) * | 2022-06-09 | 2022-09-23 | 江西特莱斯光学有限公司 | Glass-plastic mixed thermal drift stabilization fisheye lens |
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| CN115097597B (en) * | 2022-06-09 | 2024-03-12 | 江西特莱斯光学有限公司 | Glass-plastic mixed thermal drift stable fish-eye lens |
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| Publication number | Publication date |
|---|---|
| CN110441892B (en) | 2024-02-13 |
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