CN109521551A - The vehicle-mounted optical system of object lens of large relative aperture zero temp shift and imaging method - Google Patents
The vehicle-mounted optical system of object lens of large relative aperture zero temp shift and imaging method Download PDFInfo
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- CN109521551A CN109521551A CN201811553126.6A CN201811553126A CN109521551A CN 109521551 A CN109521551 A CN 109521551A CN 201811553126 A CN201811553126 A CN 201811553126A CN 109521551 A CN109521551 A CN 109521551A
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- 230000003287 optical effect Effects 0.000 title claims abstract description 24
- 238000003384 imaging method Methods 0.000 title claims abstract description 11
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 claims abstract description 47
- 238000004026 adhesive bonding Methods 0.000 claims abstract description 7
- 238000007689 inspection Methods 0.000 claims description 5
- 238000009738 saturating Methods 0.000 claims description 4
- 238000013461 design Methods 0.000 abstract description 2
- 239000000463 material Substances 0.000 description 6
- 239000011521 glass Substances 0.000 description 5
- 230000004075 alteration Effects 0.000 description 3
- 238000005286 illumination Methods 0.000 description 3
- 230000035945 sensitivity Effects 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000003292 glue Substances 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
- 239000008188 pellet Substances 0.000 description 1
- 235000015170 shellfish Nutrition 0.000 description 1
- 230000003595 spectral effect Effects 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
Classifications
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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
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- Optics & Photonics (AREA)
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Abstract
The present invention relates to a kind of vehicle-mounted optical system of object lens of large relative aperture zero temp shift and imaging methods, the optics is examined as along light, direction is successively arranged preceding group of A to system from left to right, diaphragm C, after organize B, group A includes the bent moon negative lens A1 set gradually before described, bent moon negative lens A2, biconvex positive lens A3, group B includes successively bent moon positive lens B1 after described, the gluing unit that biconvex positive lens B2 and bent moon negative lens B3 is constituted, this optical system structure is simple, design is reasonable, with larger field angle, compared with object lens of large relative aperture, and distortion is smaller, defocusing amount is small under high temperature and low temperature environment, it can keep normally being imaged, the camera lens can allow the CCD of 3,000,000 pixels or CMOS chip uses.
Description
Technical field
The present invention relates to a kind of vehicle-mounted optical system of object lens of large relative aperture zero temp shift and imaging methods.
Background technique
Camera lens is the important component of vehicle-mounted camera, and on-vehicle lens are in the stage of high speed development, market at present
Upper all kinds of on-vehicle lens emerge one after another, but most of camera lenses there are light passing amounts small, high/low temperature defocus, illumination are low, and distortion is big etc. asks
Topic.This kind of camera lens cooperation video camera is in use, be difficult really to realize higher resolution ratio.
Summary of the invention
In view of the deficiencies in the prior art, technical problem to be solved by the invention is to provide a kind of object lens of large relative aperture zero temp shifts
Vehicle-mounted optical system and imaging method, solve that on-vehicle lens light passing amount is small, high/low temperature defocus, illumination are low, distort the problems such as big.
In order to solve the above-mentioned technical problem, the technical scheme is that a kind of vehicle-mounted optics of object lens of large relative aperture zero temp shift
System, optics inspection as along light, direction is successively arranged preceding group of A, diaphragm C, organizes B afterwards system from left to right, it is described before group A include
Bent moon negative lens A1, bent moon negative lens A2, the biconvex positive lens A3 set gradually, organizes B after described and includes successively bent moon positive lens
The gluing unit that B1, biconvex positive lens B2 and bent moon negative lens B3 are constituted.
Further, the airspace before described between group A and rear group B is 2.55mm, the bent moon negative lens A1 with it is curved
Airspace between moon negative lens A2 is 1.4mm, and the airspace between bent moon negative lens A2 and biconvex positive lens A3 is
1.47mm, the airspace between biconvex positive lens A3 and diaphragm C are 1.15mm, the sky between diaphragm C and double-concave negative lens B1
1.4mm is divided between gas, the airspace between bent moon positive lens B1 and gluing unit is 0.1mm.
Further, which examines as the focal length of system is f, wherein bent moon negative lens A1, bent moon negative lens A2, biconvex
Positive lens A3, bent moon positive lens B1, biconvex positive lens B2, bent moon negative lens B3 focal length be respectively f1, f2, f3, f4, f5, f6；
Wherein meet following ratio: -3.5 < f1/f < -2.0, -3 < f2/f < -2,2.9 < f3/f < 1.8,5 < f4/f < 2.5,2.5 with focal length f
< f5/f < 1, -3.5 < f6/f < -2.1.
Further, parallel flat is set between bent moon negative lens B3 and IMA image planes.
A kind of imaging method of the vehicle-mounted optical system of object lens of large relative aperture zero temp shift: optical path sequence enter preceding group of A, diaphragm C, after
It is imaged after group B.
Compared with prior art, the invention has the following advantages: structure is simple, design rationally, has larger field
Angle, compared with object lens of large relative aperture, and it is smaller to distort, and defocusing amount is small under high temperature and low temperature environment, can keep normally being imaged, the camera lens
The CCD or CMOS chip that can allow 3,000,000 pixels are used.
The present invention will be further described in detail with reference to the accompanying drawings and detailed description.
Detailed description of the invention
Fig. 1 is schematic diagram of optical system；
Fig. 2 is this optical system visible light MTF functional value；
Fig. 3 is the mtf value that this optical system low temperature -40 is spent under environment；
Fig. 4 is the mtf value under 105 degree of environment of this optical system high temperature.
In figure:
A is organized before A-；B is organized after B-；C- diaphragm C；D-IMA；A1- bent moon negative lens A1；A2- bent moon negative lens A2；A3- biconvex is just saturating
Mirror A3；B1- bent moon positive lens B1；B2- biconvex positive lens B2；B3- bent moon negative lens B3.
Specific embodiment
To make the foregoing features and advantages of the present invention clearer and more comprehensible, special embodiment below, and cooperate attached drawing, make detailed
Carefully it is described as follows.
As shown in Figure 1, a kind of vehicle-mounted optical system of object lens of large relative aperture zero temp shift, optics inspection as system along light from left-hand
Right direction is successively arranged preceding group of A, diaphragm C, organizes B afterwards, it is described before group A include that the bent moon negative lens A1 set gradually, bent moon are negative saturating
Mirror A2, biconvex positive lens A3, organize B after described and include successively bent moon positive lens B1, biconvex positive lens B2 and bent moon negative lens B3 structure
At gluing unit.
In the present embodiment, the airspace between the preceding group A and rear group B is 2.55mm, the bent moon negative lens A1
Airspace between bent moon negative lens A2 is 1.4mm, the airspace between bent moon negative lens A2 and biconvex positive lens A3
For 1.47mm, the airspace between biconvex positive lens A3 and diaphragm C is 1.15mm, between diaphragm C and double-concave negative lens B1
Airspace is 1.4mm, and the airspace between bent moon positive lens B1 and gluing unit is 0.1mm.
In the present embodiment, the optics inspection as system focal length be f, wherein bent moon negative lens A1, bent moon negative lens A2,
Biconvex positive lens A3, bent moon positive lens B1, biconvex positive lens B2, bent moon negative lens B3 focal length be respectively f1, f2, f3, f4,
f5,f6；Wherein meet following ratio: -3.5 < f1/f < -2.0, -3 < f2/f < -2 with focal length f, 2.9 < f3/f < 1.8,5 < f4/f <
2.5,2.5 < f5/f < 1, -3.5 < f6/f < -2.1.
In the present embodiment, parallel flat is set between bent moon negative lens B3 and IMA image planes.
A kind of imaging method of the vehicle-mounted optical system of object lens of large relative aperture zero temp shift: optical path sequence enter preceding group of A, diaphragm C, after
It is imaged after group B.
In the present embodiment, the present invention uses six slice structures, reasonable distribution focal power, using preceding group of three pieces, rear group
The structure of three pieces preferably balances all kinds of aberrations, by reasonably selecting glue pellet glass material, color difference is corrected, by right
The control at light key light angle, realizes the requirement of higher illuminance, by optimizing glass material, makes camera lens in the ring of high temperature and low temperature
It can normal imaging under border.
This optical system by six full glass spherical surface lens groups at, preceding group of three-chip type structure for forcing down light, in preceding group
Positive uses the material of high index, can effectively reduce senior aberration, glued part is used in rear group, wherein that positive is Ah
The higher material of shellfish number, negative film is the lower material of Abbe number, balances color difference, passes through the temperature-compensating of eyeglass and eyeglass
Realize optics thermal compensation；It is distributed by reasonable focal power, balances other aberrations, reduce the tolerance sensitivities of camera lens.
In the present embodiment, each lens parameters are as follows:
The specific performance parameter of this optical texture are as follows: focal length: EFFL=2.8mm；Number=1.8 F；Field angle: 2w >=100 °；Distortion:
< -8%；Circular diameter is imaged and is greater than Ф 5；Operating spectral range: visual light imaging；Optics overall length TTL≤16mm, optics rear cut-off distance
≥5mm；The camera lens is suitable for 3,000,000 pixel high-resolution CCD or cmos camera.
As seen from Figure 2, camera lens resolution ratio with higher, the biography for meeting 3,000,000 pixel CMOS chips need to ask.
By Fig. 3, Fig. 4 it is found that camera lens MTF in the environment of 105 degree of high temperature and low temperature -40 are spent decays very little, substantially in fact
The zero temp shift performance of camera lens is showed.
Compared to other camera lenses, which has following advantage: TTL is short, compact-sized, is suitable for on-vehicle lens for total
Long requirement；Relative aperture is larger, and illumination is high, and picture brightness does very well；Under the high and low temperature test environment (- 40 degree are to 105 degree), base
Originally accomplish that not defocus, image quality are not affected by temperature；Cost is relatively low, and using six slice structures, the glass material of selection is opposite
Cheaply；By reasonably adjusting glass spherical structure and distance, tolerance sensitivities are preferable, are easily assembled and debug.
The foregoing is merely presently preferred embodiments of the present invention, all equivalent changes done according to scope of the present invention patent with
Modification, is all covered by the present invention.
Claims (5)
1. a kind of vehicle-mounted optical system of object lens of large relative aperture zero temp shift, it is characterised in that: optics inspection as system along light from left-hand
Right direction is successively arranged preceding group of A, diaphragm C, organizes B afterwards, it is described before group A include that the bent moon negative lens A1 set gradually, bent moon are negative saturating
Mirror A2, biconvex positive lens A3, organize B after described and include successively bent moon positive lens B1, biconvex positive lens B2 and bent moon negative lens B3 structure
At gluing unit.
2. the vehicle-mounted optical system of object lens of large relative aperture zero temp shift according to claim 1, it is characterised in that: it is described before group A with
The airspace organized between B afterwards is 2.55mm, and the airspace between the bent moon negative lens A1 and bent moon negative lens A2 is
1.4mm, the airspace between bent moon negative lens A2 and biconvex positive lens A3 are 1.47mm, biconvex positive lens A3 and diaphragm C
Between airspace be 1.15mm, airspace between diaphragm C and double-concave negative lens B1 is 1.4mm, bent moon positive lens B1
Airspace between gluing unit is 0.1mm.
3. the vehicle-mounted optical system of object lens of large relative aperture zero temp shift according to claim 1, it is characterised in that: optics inspection is as system
The focal length of system is f, wherein bent moon negative lens A1, bent moon negative lens A2, biconvex positive lens A3, bent moon positive lens B1, biconvex are just saturating
Mirror B2, bent moon negative lens B3 focal length be respectively f1, f2, f3, f4, f5, f6；Wherein meet following ratio with focal length f: -3.5 <
F1/f < -2.0, -3 < f2/f < -2,2.9 < f3/f < 1.8,5 < f4/f < 2.5,2.5 < f5/f < 1, -3.5 < f6/f < -2.1.
4. the vehicle-mounted optical system of object lens of large relative aperture zero temp shift according to claim 1, it is characterised in that: bent moon negative lens B3
Parallel flat is set between IMA image planes.
5. a kind of imaging method of the vehicle-mounted optical system of object lens of large relative aperture zero temp shift, using such as claim 1-1 any one institute
The vehicle-mounted optical system of object lens of large relative aperture zero temp shift stated, it is characterised in that: it is laggard that optical path sequence enters preceding group of A, diaphragm C, rear group B
Row imaging.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811553126.6A CN109521551B (en) | 2018-12-18 | 2018-12-18 | Large-relative-aperture zero-temperature-drift vehicle-mounted optical system and imaging method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811553126.6A CN109521551B (en) | 2018-12-18 | 2018-12-18 | Large-relative-aperture zero-temperature-drift vehicle-mounted optical system and imaging method |
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| Publication Number | Publication Date |
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| CN109521551A true CN109521551A (en) | 2019-03-26 |
| CN109521551B CN109521551B (en) | 2023-11-10 |
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| CN201811553126.6A Active CN109521551B (en) | 2018-12-18 | 2018-12-18 | Large-relative-aperture zero-temperature-drift vehicle-mounted optical system and imaging method |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110068917A (en) * | 2019-05-05 | 2019-07-30 | 昆明科茂机电技术有限公司 | A kind of on-vehicle lens and on-vehicle lens mould group |
| CN110456477A (en) * | 2019-07-30 | 2019-11-15 | 福建福光天瞳光学有限公司 | The low distortion backsight optical system of one kind and imaging method |
| CN110554488A (en) * | 2019-08-31 | 2019-12-10 | 福建福光天瞳光学有限公司 | small day and night dual-purpose vehicle-mounted optical system and working method thereof |
| CN110727088A (en) * | 2019-10-17 | 2020-01-24 | 福建福光股份有限公司 | Wide-angle high-low temperature-resistant fixed-focus lens and working method thereof |
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| US20080074761A1 (en) * | 2006-09-21 | 2008-03-27 | Hiromitsu Yamakawa | Wide-angle imaging lens, imaging device and camera module |
| CN203311085U (en) * | 2013-06-28 | 2013-11-27 | 东莞市宇瞳光学科技有限公司 | Wide-angle prime lens |
| CN106908938A (en) * | 2017-04-05 | 2017-06-30 | 舜宇光学(中山)有限公司 | A kind of aspherical fish eye lens |
| CN107741633A (en) * | 2017-11-30 | 2018-02-27 | 福建福光股份有限公司 | 1.3mm focal lengths panorama day and night confocal optical system |
| CN107976768A (en) * | 2017-12-29 | 2018-05-01 | 福建福光光电科技有限公司 | A kind of big thang-kng zero temp shift optical texture of uniform thickness 3mm and its imaging method |
| CN209343019U (en) * | 2018-12-18 | 2019-09-03 | 福建福光天瞳光学有限公司 | The vehicle-mounted optical system of object lens of large relative aperture zero temp shift |
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2018
- 2018-12-18 CN CN201811553126.6A patent/CN109521551B/en active Active
Patent Citations (6)
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|---|---|---|---|---|
| US20080074761A1 (en) * | 2006-09-21 | 2008-03-27 | Hiromitsu Yamakawa | Wide-angle imaging lens, imaging device and camera module |
| CN203311085U (en) * | 2013-06-28 | 2013-11-27 | 东莞市宇瞳光学科技有限公司 | Wide-angle prime lens |
| CN106908938A (en) * | 2017-04-05 | 2017-06-30 | 舜宇光学(中山)有限公司 | A kind of aspherical fish eye lens |
| CN107741633A (en) * | 2017-11-30 | 2018-02-27 | 福建福光股份有限公司 | 1.3mm focal lengths panorama day and night confocal optical system |
| CN107976768A (en) * | 2017-12-29 | 2018-05-01 | 福建福光光电科技有限公司 | A kind of big thang-kng zero temp shift optical texture of uniform thickness 3mm and its imaging method |
| CN209343019U (en) * | 2018-12-18 | 2019-09-03 | 福建福光天瞳光学有限公司 | The vehicle-mounted optical system of object lens of large relative aperture zero temp shift |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110068917A (en) * | 2019-05-05 | 2019-07-30 | 昆明科茂机电技术有限公司 | A kind of on-vehicle lens and on-vehicle lens mould group |
| CN110456477A (en) * | 2019-07-30 | 2019-11-15 | 福建福光天瞳光学有限公司 | The low distortion backsight optical system of one kind and imaging method |
| CN110554488A (en) * | 2019-08-31 | 2019-12-10 | 福建福光天瞳光学有限公司 | small day and night dual-purpose vehicle-mounted optical system and working method thereof |
| CN110727088A (en) * | 2019-10-17 | 2020-01-24 | 福建福光股份有限公司 | Wide-angle high-low temperature-resistant fixed-focus lens and working method thereof |
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| Publication number | Publication date |
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| CN109521551B (en) | 2023-11-10 |
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