CN107436480A - Low cost starlight level athermal monitoring camera lens - Google Patents
Low cost starlight level athermal monitoring camera lens Download PDFInfo
- Publication number
- CN107436480A CN107436480A CN201710834913.7A CN201710834913A CN107436480A CN 107436480 A CN107436480 A CN 107436480A CN 201710834913 A CN201710834913 A CN 201710834913A CN 107436480 A CN107436480 A CN 107436480A
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- CN
- China
- Prior art keywords
- lens
- athermal
- low cost
- monitoring camera
- negative power
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000012544 monitoring process Methods 0.000 title claims abstract description 19
- 239000000571 coke Substances 0.000 claims abstract description 15
- 239000011521 glass Substances 0.000 claims abstract description 11
- 229920003023 plastic Polymers 0.000 claims abstract description 9
- 239000004033 plastic Substances 0.000 claims abstract description 9
- 102220029346 rs34541442 Human genes 0.000 claims description 3
- 102220012898 rs397516346 Human genes 0.000 claims description 3
- 102220015875 rs6734111 Human genes 0.000 claims description 3
- 238000003384 imaging method Methods 0.000 abstract description 4
- 238000003331 infrared imaging Methods 0.000 abstract description 4
- 230000000007 visual effect Effects 0.000 abstract description 3
- 125000006850 spacer group Chemical group 0.000 description 4
- 238000009738 saturating Methods 0.000 description 3
- 210000005056 cell body Anatomy 0.000 description 2
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B13/00—Optical objectives specially designed for the purposes specified below
- G02B13/001—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras
- G02B13/0015—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras characterised by the lens design
- G02B13/002—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras characterised by the lens design having at least one aspherical surface
- G02B13/0045—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras characterised by the lens design having at least one aspherical surface having five or more lenses
-
- 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
Abstract
The present invention relates to lens technology field, more particularly to low cost starlight level athermal monitoring camera lens, include successively along light incident direction：The lens of curved month type negative power first, the lens of falcate negative power second, the lens of biconvex positive light coke the 3rd, the lens of curved month type negative power the 4th, the lens of biconvex positive light coke the 5th, the lens of concave-concave negative power the 6th and the lens of biconvex positive light coke the 7th, first lens, second lens, the 3rd lens, the 4th lens, the 6th lens and the 7th lens are plastic lens, and the 5th lens are glass lens.The present invention realizes F1.4 by rationally designing, and the infrared imaging not defocus in the state of visual light imaging is clear, meanwhile, camera lens does not run Jiao under 40 °~80 ° states of environment temperature, and the present invention has the characteristics of low-cost and high-performance.
Description
Technical field
The present invention relates to lens technology field, more particularly to low cost starlight level athermal monitoring camera lens.
Background technology
With the raising of security protection scientific and technological level and electronic technology level, requirement more and more higher of the security protection industry to camera lens, prison
It is simultaneously outstanding if necessary to the image of daytime and shooting at night to control video camera, there are two kinds of realization means：
1. increasing camera chip size, make camera pixel and the increase of pixel photosensitive area.
2. lifting imaging lens pixel and thang-kng coefficient, the camera lens of big thang-kng coefficient can have more excellent lighting performance,
So as to reach high pixel and the excellent performance under low-light (level) environment.
Because CCTV camera belongs to consumer product, user is very sensitive to price, increases imager chip CMOS sizes
Cost can be caused to be substantially increased, so most of product can only be lifted from camera lens, this requires camera lens to have high pixel and lead to greatly
The characteristics of light.
The content of the invention
The invention provides low cost starlight level athermal monitoring camera lens, by rationally designing, realize F1.4, and visible
Infrared imaging not defocus in the state of photoimaging is clear, meanwhile, camera lens does not run Jiao under -40 °~80 ° states of environment temperature, this
Invention has the characteristics of low-cost and high-performance.
In order to solve the above-mentioned technical problem, the technical solution used in the present invention is：
Low cost starlight level athermal monitoring camera lens, include successively along light incident direction：Curved month type negative power first
Lens, the lens of falcate negative power second, the lens of biconvex positive light coke the 3rd, the lens of curved month type negative power the 4th are double
The convex lens of positive light coke the 5th, the lens of concave-concave negative power the 6th and the lens of biconvex positive light coke the 7th, first lens, institute
It is plastic lens to state the second lens, the 3rd lens, the 4th lens, the 6th lens and the 7th lens, institute
It is glass lens to state the 5th lens.
Preferably, first lens, second lens, the 3rd lens, the 4th lens, the described 5th saturating
The focal length of mirror, the 6th lens and the 7th lens meets with the focal length of the low cost starlight level athermal monitoring camera lens
Relationship below：
-2.6<︱ f1/f ︱<-2.2；
-5.8<︱ f2/f ︱<-4.9；
1.45<︱ f3/f ︱<1.62；
-3.8<︱ f4/f ︱<-3.5；
1.42<︱ f5/f ︱<1.53；
-1.8<︱ f6/f ︱<-1.6；
1.3<︱ f7/f ︱<1.45；
Wherein, the f1 to the f7 corresponds to first lens to the focal length of the 7th lens respectively, described f pairs
It should be the focal length of the low cost starlight level athermal monitoring camera lens.
Preferably, first lens to the corresponding focal length of the 7th lens, refractive index and radius of curvature scope such as
Following table：
| F1=-16.2-- 14.8 | N1=1.45-1.65 | R1=3.5-4.3 | R2=2.0-2.8 |
| F2=-34-- 28.5 | N2=1.45-1.65 | R3=-2.6-- 3.2 | R4=-4.0-- 5.0 |
| F3=9.2-10.3 | N3=1.45-1.65 | R5=9.1-10.2 | R6=-9.3-- 11.2 |
| F4=-24.3-- 22.3 | N4=1.55-1.75 | R7=-12.5-- 13.5 | R8=-90.5-- 120.5 |
| F5=8.7-9.5 | N5=1.43-1.63 | R9=7.3-8.0 | R10=-7.3-- 8.0 |
| F6=-11.2-- 10.2 | N6=1.55-1.75 | R11=-7.5-- 8.3 | R12=48-51 |
| F7=8.3-9.5 | N7=1.45-1.65 | R13=4.2-5.0 | R14=48.3-52.1 |
Wherein, f represents focal length, and n represents refractive index, and R represents radius of curvature.
Compared with prior art, low cost starlight level athermal monitoring camera lens of the invention, along light incident direction successively
Including：The lens of curved month type negative power first, the lens of falcate negative power second, the lens of biconvex positive light coke the 3rd are curved
The lens of month type negative power the 4th, the lens of biconvex positive light coke the 5th, the lens of concave-concave negative power the 6th and biconvex positive light coke
7th lens, first lens, second lens, the 3rd lens, the 4th lens, the 6th lens and institute
It is plastic lens to state the 7th lens, and the 5th lens are glass lens, by using 1 glass lens, 6 plastic lens
Glass modeling combines, makes full use of plastic aspherical element anaberration, glass lens to correct infrared function, realizes high/low temperature compensation and red
Outer confocal function, the present invention realize F1.4 by rationally designing, and infrared imaging is not in the state of visual light imaging is clear
Defocus, meanwhile, camera lens does not run Jiao under -40 °~80 ° states of environment temperature, meets user to camera lens low-cost and high-performance
It is required that.
Brief description of the drawings
Fig. 1 is the structural representation of the low cost starlight level athermal monitoring camera lens of the present invention.
Embodiment
Below in conjunction with the accompanying drawings, embodiments of the present invention are specifically illustrated, accompanying drawing is only for reference and explanation uses, and does not form pair
The limitation of scope of patent protection of the present invention.
Fig. 1 is refer to, low cost starlight level athermal monitoring camera lens of the invention, is included successively along light incident direction：
The first lens of curved month type negative power 1, the second lens of falcate negative power 2, the lens 3 of biconvex positive light coke the 3rd, bent moon
The lens 4 of type negative power the 4th, the lens 5 of biconvex positive light coke the 5th, the lens 6 of concave-concave negative power the 6th and biconvex positive light coke
7th lens 7, wherein, first lens 1 and second lens 2 are by soma close-fittings, second lens 2 and described the
Three lens 3 by spacer ring close-fitting, the 3rd lens 3 and the 4th lens 4 by soma close-fittings, the 4th lens 4 with
5th lens 5 are saturating by spacer ring close-fitting, the described 6th by spacer ring close-fitting, the 5th lens 5 and the 6th lens 6
Mirror 6 and the 7th lens 7 are by spacer ring close-fitting, specifically, first lens 1, second lens 2, the described 3rd saturating
Mirror 3, the 4th lens 4, the 6th lens 6 and the 7th lens 7 are plastic lens, and the 5th lens 5 are glass
Lens.
Further, first lens 1, second lens 2, the 3rd lens 3, the 4th lens 4, described
The focal length of 5th lens 5, the 6th lens 6 and the 7th lens 7 and the low cost starlight level athermal monitoring camera lens
Focal length meet relationship below：
-2.6<︱ f1/f ︱<-2.2；
-5.8<︱ f2/f ︱<-4.9；
1.45<︱ f3/f ︱<1.62；
-3.8<︱ f4/f ︱<-3.5；
1.42<︱ f5/f ︱<1.53；
-1.8<︱ f6/f ︱<-1.6；
1.3<︱ f7/f ︱<1.45；
Wherein, the f1 to the f7 corresponds to first lens 1 to the focal length of the 7th lens 7, the f respectively
Correspond to the focal length of the low cost starlight level athermal monitoring camera lens.
Further, first lens 1 are to the 7 corresponding focal length of the 7th lens, refractive index and radius of curvature
Scope such as table 1：
| F1=-16.2-- 14.8 | N1=1.45-1.65 | R1=3.5-4.3 | R2=2.0-2.8 |
| F2=-34-- 28.5 | N2=1.45-1.65 | R3=-2.6-- 3.2 | R4=-4.0-- 5.0 |
| F3=9.2-10.3 | N3=1.45-1.65 | R5=9.1-10.2 | R6=-9.3-- 11.2 |
| F4=-24.3-- 22.3 | N4=1.55-1.75 | R7=-12.5-- 13.5 | R8=-90.5-- 120.5 |
| F5=8.7-9.5 | N5=1.43-1.63 | R9=7.3-8.0 | R10=-7.3-- 8.0 |
| F6=-11.2-- 10.2 | N6=1.55-1.75 | R11=-7.5-- 8.3 | R12=48-51 |
| F7=8.3-9.5 | N7=1.45-1.65 | R13=4.2-5.0 | R14=48.3-52.1 |
Table 1
Wherein, f represents focal length, and n represents refractive index, and R represents radius of curvature.
The full table 2 of physical parameter corresponding to first lens 1 to the 7th lens 7 of the present invention：
Table 2
Wherein, R represents radius of curvature, and D represents thickness, and nd represents refractive index, and k values represent circular cone coefficient, and PL represents plane,
"-" represents that direction is negative.
The present invention meets following aspherical equation formula：
In above formula, C=1/R, K are aspherical circular cone coefficient, and α is the curvature parameters of lens.
The present invention meets the Surface Parameters scope such as table 3 of as above equation corresponding surface sequence number：
Table 3
The low cost starlight level athermal monitoring camera lens of the present invention, by the glass for setting 1 glass lens, 6 plastic lens
Mould integrated structure, make full use of plastic aspherical element anaberration, glass lens to correct infrared function, realize high/low temperature compensation and
Infrared confocal function, the focal length of first lens 1 to the 7th lens 7 and the low cost starlight level are supervised without thermalization
It is following that the focal length of the control whole camera lens of camera lens is arranged to satisfaction：-2.6<︱ f1/f ︱<-2.2；-5.8<︱ f2/f ︱<-4.9；1.45<︱
F3/f ︱<1.62；-3.8<︱ f4/f ︱<-3.5；1.42<︱ f5/f ︱<1.53；-1.8<︱ f6/f ︱<-1.6；1.3<︱ f7/f ︱<1.45
Relational expression, it is ensured that pixel request of the invention, realize F1.4 and infrared imaging be not in the state of visual light imaging is clear
Defocus, camera lens does not run Jiao under -40 °~80 ° states of environment temperature, and has the characteristics of low-cost and high-performance.
Above disclosed is only presently preferred embodiments of the present invention, it is impossible to the rights protection model of the present invention is limited with this
Enclose, therefore the equivalent variations made according to scope of the present invention patent, still belong to the scope that the present invention is covered.
Claims (3)
1. low cost starlight level athermal monitoring camera lens, it is characterised in that include successively along light incident direction：Curved month type bears light
Power first lens, the lens of falcate negative power second, the lens of biconvex positive light coke the 3rd, curved month type negative power the 4th
Lens, the lens of biconvex positive light coke the 5th, the lens of concave-concave negative power the 6th and the lens of biconvex positive light coke the 7th, described first
Lens, second lens, the 3rd lens, the 4th lens, the 6th lens and the 7th lens are plastics
Lens, the 5th lens are glass lens.
2. low cost starlight level athermal monitoring camera lens as claimed in claim 1, it is characterised in that first lens, institute
State the second lens, the 3rd lens, the 4th lens, the 5th lens, the 6th lens and the 7th lens
The focal lengths of focal length and the low cost starlight level athermal monitoring camera lens meet relationship below：
-2.6<︱ f1/f ︱<-2.2；
-5.8<︱ f2/f ︱<-4.9；
1.45<︱ f3/f ︱<1.62；
-3.8<︱ f4/f ︱<-3.5；
1.42<︱ f5/f ︱<1.53；
-1.8<︱ f6/f ︱<-1.6；
1.3<︱ f7/f ︱<1.45；
Wherein, the f1 to the f7 corresponds to first lens and corresponded to the focal length of the 7th lens, the f respectively
The focal length of the low cost starlight level athermal monitoring camera lens.
3. low cost starlight level athermal monitoring camera lens as claimed in claim 1, it is characterised in that first lens to institute
State the scope such as following table of the corresponding focal length of the 7th lens, refractive index and radius of curvature：
Wherein, f represents focal length, and n represents refractive index, and R represents radius of curvature.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710834913.7A CN107436480A (en) | 2017-09-15 | 2017-09-15 | Low cost starlight level athermal monitoring camera lens |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710834913.7A CN107436480A (en) | 2017-09-15 | 2017-09-15 | Low cost starlight level athermal monitoring camera lens |
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| Publication Number | Publication Date |
|---|---|
| CN107436480A true CN107436480A (en) | 2017-12-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710834913.7A Pending CN107436480A (en) | 2017-09-15 | 2017-09-15 | Low cost starlight level athermal monitoring camera lens |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109375352A (en) * | 2018-12-26 | 2019-02-22 | 东莞市宇瞳光学科技股份有限公司 | A kind of infrared confocal camera lens |
| CN109491056A (en) * | 2019-01-24 | 2019-03-19 | 宁波舜宇车载光学技术有限公司 | Optical lens and imaging device |
| CN111580251A (en) * | 2020-05-22 | 2020-08-25 | 玉晶光电(厦门)有限公司 | Optical imaging lens |
| CN112444956A (en) * | 2019-08-30 | 2021-03-05 | 宁波舜宇车载光学技术有限公司 | Optical lens and imaging device |
| WO2021121004A1 (en) * | 2019-12-18 | 2021-06-24 | 江西联创电子有限公司 | Wide-angle lens and imaging device |
| WO2021128146A1 (en) * | 2019-12-26 | 2021-07-01 | 诚瑞光学(常州)股份有限公司 | Camera optical lens |
-
2017
- 2017-09-15 CN CN201710834913.7A patent/CN107436480A/en active Pending
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109375352A (en) * | 2018-12-26 | 2019-02-22 | 东莞市宇瞳光学科技股份有限公司 | A kind of infrared confocal camera lens |
| CN109375352B (en) * | 2018-12-26 | 2023-11-07 | 东莞市宇瞳光学科技股份有限公司 | Infrared confocal lens |
| CN109491056A (en) * | 2019-01-24 | 2019-03-19 | 宁波舜宇车载光学技术有限公司 | Optical lens and imaging device |
| CN109491056B (en) * | 2019-01-24 | 2021-10-29 | 宁波舜宇车载光学技术有限公司 | Optical lens and imaging apparatus |
| CN112444956A (en) * | 2019-08-30 | 2021-03-05 | 宁波舜宇车载光学技术有限公司 | Optical lens and imaging device |
| WO2021121004A1 (en) * | 2019-12-18 | 2021-06-24 | 江西联创电子有限公司 | Wide-angle lens and imaging device |
| WO2021128146A1 (en) * | 2019-12-26 | 2021-07-01 | 诚瑞光学(常州)股份有限公司 | Camera optical lens |
| CN111580251A (en) * | 2020-05-22 | 2020-08-25 | 玉晶光电(厦门)有限公司 | Optical imaging lens |
| CN111580251B (en) * | 2020-05-22 | 2022-02-08 | 玉晶光电(厦门)有限公司 | Optical imaging lens |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB03 | Change of inventor or designer information | ||
| CB03 | Change of inventor or designer information |
Inventor after: Zhang Pinguang Inventor after: Li Zemin Inventor after: Liu Guanlu Inventor after: He Jianwei Inventor after: Mao Caiying Inventor before: Li Zemin |
|
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20171205 |