CN206671663U - A kind of ultra-wide angle day and night confocal opticses camera lens - Google Patents
A kind of ultra-wide angle day and night confocal opticses camera lens Download PDFInfo
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- CN206671663U CN206671663U CN201720457078.5U CN201720457078U CN206671663U CN 206671663 U CN206671663 U CN 206671663U CN 201720457078 U CN201720457078 U CN 201720457078U CN 206671663 U CN206671663 U CN 206671663U
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Abstract
The utility model provides a kind of ultra-wide angle day and night confocal opticses camera lens, belong to technical field of optical, it includes the first lens set gradually along optical axis from object plane to image planes, second lens, 3rd lens, 4th lens, 5th lens and sensitive chip, diaphragm is set between 3rd lens and the 4th lens, first lens and the 5th lens are glass spherical lens, second lens, 3rd lens and the 4th lens are plastic aspheric lenes, first lens, second lens, 3rd lens, the focal length of 4th lens and the 5th lens is respectively negative, just, just, it is negative, just.The utility model optical lens can not only overcome the deficiencies of eyeglass number in this kind of optical lens is more, the resolution ratio under big visual field is unsatisfactory, can also reduce camera lens volume, while can reduce production cost again.
Description
Technical field
The utility model belongs to technical field of optical, more particularly to a kind of ultra-wide angle day and night confocal opticses camera lens.
Background technology
With the development that science and technology is with rapid changepl. never-ending changes and improvements, use of the video monitoring with smart home in people live is growing day by day.
It is more or less although ensure that the premise of big visual field in the big visual field optical lens used in monitoring and smart home
There are problems that volume is big, quality weight, infrared confocal effect are undesirable or resolution ratio is low etc. some.In order that big visual field optics
Camera lens more accords with the demands of the market, and usual emphasis improves some deficiencies of optical lens, although there is some ultra-wide angle, infrared confocal
Optical lens is shown up prominently, but because the eyeglass number used in system is more so that the resolution ratio under big visual field is unsatisfactory.Together
When, also increase cost and volume, it is impossible to meet the expectation in market.
Publication No. CN104898258A patent discloses a kind of high/low temperature, infrared confocal, extra small distortion, ultra-wide angle light
System, it is characterised in that：Including set gradually the first eyeglass (1), the second eyeglass (2), the 3rd eyeglass (3), diaphragm (4),
4th eyeglass (5), the 5th eyeglass (6), the 6th eyeglass (7), the 7th eyeglass (8), optical filter (9) and sensitive chip (10), it is described
First eyeglass (1), the second eyeglass (2), the 3rd eyeglass (3), the 5th eyeglass (6), the 6th eyeglass (7), the 7th eyeglass (8) are plastics
Aspherical lens, the 4th eyeglass (5) are Glass aspheric eyeglass, the high/low temperature, infrared confocal, extra small distortion, ultra-wide angle
Optical system cost is low, has corrected distortion, has fabulous image sharpness and color reducibility in visible light wave range, realizes as matter
In the uniformity of varying environment.The optical system number of lenses is more, and weight is big, it is impossible to meets the market demand, definition well
Need further to be improved.
Publication No. CN106054357A patent discloses a kind of ultra-wide angle low-distortion on-vehicle lens optical system, its
In, optical system be by the first lens L1 with negative power, the second lens L2 of negative power, positive light coke it is the 3rd saturating
Mirror L3, the 4th lens L4 of positive light coke, the 5th lens L5 and cutoff filter the L6 composition of positive light coke, along optical axis
Arranged from subject to the order of image plane side, different distance subject can move integrally realization at image planes by camera lens
Blur-free imaging.First lens, the 4th lens and the 5th lens are glass aspheric lenses, and remaining is glass lens, this optical system
The angle of visual field of uniting is big, distortion is small, small volume, distorts without TV, in -20 DEG C ~ 85 DEG C scopes without temperature drift defocus phenomenon.In the optical system
Eyeglass used uses glass spheric glass or Glass aspheric eyeglass, improves cost, it is impossible to meets consumer's low cost
Demand.
Utility model content
In order to overcome ultra-wide angle, above-mentioned deficiency present in infrared confocal opticses camera lens, the utility model will provide one kind
Ultra-wide angle, infrared confocal opticses camera lens, the optical lens can not only overcome in this kind of optical lens that eyeglass number is more, under big visual field
Resolution ratio it is unsatisfactory the deficiencies of, camera lens volume can also be reduced, while production cost can be reduced again.
In order to solve the above technical problems, technical scheme is used by the utility model：
A kind of ultra-wide angle day and night confocal opticses camera lens, including set gradually along optical axis from object plane to image planes the first lens,
Second lens, the 3rd lens, the 4th lens, the 5th lens and sensitive chip, set between the 3rd lens and the 4th lens
Diaphragm, first lens and the 5th lens are glass spherical lens, and second lens, the 3rd lens and the 4th lens are modeling
Glue non-spherical lens, first lens, the second lens, the 3rd lens, the focal length of the 4th lens and the 5th lens be respectively it is negative,
Just, it is positive and negative, just.
Preferably, the object plane side of first lens is convex surface, and image planes side is concave surface；The object plane side of second lens is
Concave surface, image planes side are convex surface；3rd lens are biconvex lens；4th lens are biconcave lens；5th lens
For biconvex lens.
Preferably, first lens are low dispersing lens；Second lens are high dispersing lens；3rd lens
For low dispersing lens；4th lens are high dispersing lens；5th lens are ED lens.
Preferably, the aspherical face type of second lens, the 3rd lens and the 4th lens meets equation：
,
Wherein：C is the curvature corresponding to radius, and y is radial coordinate, the unit and length of lens unit phase of radial coordinate
Together, k is circular cone whose conic coefficient；
As k ＜ -1, the face shape curve of lens is hyperbola；
As k=- 1, the face shape curve of lens is parabola；
As -1 ＜ k ＜ 0, the face shape curve of lens is ellipse；
As k=0, the face shape curve of lens is circle；
As k ＞ 0, the face shape curve of lens is oblate；
~The coefficient corresponding to each radial coordinate is represented respectively.
Preferably, optical filter and sensitive chip protective glass are set gradually between the 5th lens and sensitive chip.
Preferably, the size of the sensitive chip is 1/2.5 ", resolution ratio is 1,300,000 ~ 5,000,000 pixels.
Compared with prior art, the beneficial effects of the utility model are as follows：
The utility model Pass through above-mentioned technical proposal, there is provided a kind of ultra-wide angle, infrared confocal opticses camera lens, the optical frames
Head can not only overcome the deficiencies of eyeglass number in this kind of optical lens is more, the resolution ratio under big visual field is unsatisfactory, can also contract
Tiny lens volume, while production cost can be reduced again.In the utility model optical lens, the first lens are with negative light focus
The low dispersion lens of degree, it can be not only the light that camera lens imports the big angle of visual field, can also effectively control axial chromatic aberration；
Second lens are the less aspherical positive lens of curvature, not only can also make visual field with coma caused by calibration edge visual field
The resolving power at edge is greatly improved；First lens and the second lens, which coordinate, efficiently solves the various pictures such as the aberration of system
Poor equalization problem；3rd lens are hyp aspherical using two sides, and the circular cone whose conic coefficient on its two sides is satisfied by k
＜ -1, this causes camera lens to be not only able to the curvature of field of correction system well, can also improve the resolution ratio at image plane center and edge；
4th lens use high dispersive plastic non-spherical lens, and the interval between the 3rd lens and the 4th lens is smaller, are fitted close,
Serve the effect of cemented doublet correction aberration；5th lens then use glass spherical lens.The utility model is closed by selecting
Suitable eyeglass material, and reasonably distribute focal power, while lens shape of scientifically arranging in pairs or groups, with this make camera lens reach in high temperature or
Focus drifting under low temperature environment declines apart from minimum purpose so as to efficiently solve the resolution ratio caused by temperature change
Or focus drifting problem.
The angle of visual field of the utility model ultra-wide angle day and night confocal opticses camera lens can reach more than 150 °, while also ensure height
Resolution ratio.The utility model ultra-wide angle day and night confocal opticses camera lens it is achievable day and night confocal, can be achieved to monitor for 24 hours.This reality
With new ultra-wide angle day and night confocal opticses camera lens use Design of Temperature Compensation, can be worked in the environment of -40 DEG C ~+80 DEG C,
Not defocus.Day and night confocal opticses camera lens using the form of glass modeling combination, not only ensure that optical system to the utility model ultra-wide angle
Performance, and cost can be reduced, simplify structure, mitigated weight, also help production in enormous quantities, accord with the demands of the market.This
Day and night confocal opticses camera lens while using ED material, has also been carried out excellent utility model ultra-wide angle to the position of diaphragm
Change, diaphragm is arranged between the 3rd lens and the 4th lens, improve picture photo matter.
Brief description of the drawings
The utility model is described in further detail below in conjunction with the accompanying drawings.
Fig. 1：The structural representation of the utility model ultra-wide angle day and night confocal opticses camera lens；
Wherein, the lens of 1- first, the lens of 2- second, the lens of 3- the 3rd, the lens of 4- the 4th, the lens of 5- the 5th, the photosensitive cores of 6-
Piece, 7- diaphragms, 8- optical filters, 9- sensitive chip protective glass.
Embodiment
In order to more fully understand the utility model, further fairly set out with reference to embodiment in of the present utility model
Hold, but protection content of the present utility model is not limited solely to the following examples.In the following description, a large amount of tools are given
The details of body is more thoroughly understood the utility model to provide.It is however, aobvious and easy to those skilled in the art
See, the utility model can be carried out without one or more of these details.
Refering to Fig. 1, a kind of ultra-wide angle day and night confocal opticses camera lens, it is made up of 5 pieces of glass and plastic lens mixing.
Day and night confocal opticses camera lens includes set gradually along optical axis from object plane to image planes to the utility model ultra-wide angle
One lens 1, the second lens 2, the 3rd lens 3, the 4th lens 4, the 5th lens 5 and sensitive chip 6, the 3rd lens and the 4th lens
Between diaphragm 7 is set, the first lens and the 5th lens are spherical lens, and material is glass, the second lens, the 3rd lens and the 4th
Lens are non-spherical lens, and material is plastic cement.
The object plane side of the first lens 1 is convex surface in the utility model optical lens, and image planes side is concave surface, and focal length is negative；The
The object plane side of two lens 2 is concave surface, and image planes side is convex surface, and focal length is just；3rd lens 3 are biconvex lens, and focal length is just；4th
Lens 4 are biconcave lens, and focal length is negative；5th lens 5 are biconvex lens, and focal length is just.
The first lens 1 are low dispersing lens in the utility model optical lens；Second lens 2 are high dispersing lens；3rd
Lens 3 are low dispersing lens；4th lens 4 are high dispersing lens；5th lens 5 are ED lens.
The aspherical face type of the second lens, the 3rd lens and the 4th lens meets equation in the utility model optical lens
Formula：
,
Wherein：C is the curvature corresponding to radius, and y is radial coordinate, the unit and length of lens unit phase of radial coordinate
Together, k is circular cone whose conic coefficient；
As k ＜ -1, the face shape curve of lens is hyperbola；
As k=- 1, the face shape curve of lens is parabola；
As -1 ＜ k ＜ 0, the face shape curve of lens is ellipse；
As k=0, the face shape curve of lens is circle；
As k ＞ 0, the face shape curve of lens is oblate；
~The coefficient corresponding to each radial coordinate is represented respectively.
Lens former and later two aspherical geomeries can accurately be set by above parameter.
In this optical lens, the first lens 1 are the low dispersion lens with negative focal power, therefore, not only may be used
Think that camera lens imports the light of the big angle of visual field, can also effectively control axial chromatic aberration.Simultaneously as glass lens compare plastics
For eyeglass, there is high temperature resistant, corrosion-resistant, damage resistant, so as to protect camera lens well, be camera lens assembling,
Under the factors such as transport, high temperature, low temperature, Qiang Guang, dust storm, it is hardly damaged, so as to have the function that to increase the service life.
First lens 1 and the second lens 2 use meniscus shaped lens, and the second lens 2 be curvature it is less it is aspherical just
Lens, wherein the first curvature radius towards object plane is -4 ~ -7mm, the second curvature radius towards image planes is -2 ~ -5m.
This not only can also can make the resolving power of field of view edge be greatly improved with coma caused by calibration edge visual field.
Meanwhile second lens 2 towards the circular cone whose conic coefficient k ＞ 0 in the first face of object plane, be oblate curved surface, and
It is recessed to image planes, and the second lens 2 are towards circular cone whose conic coefficient k ＜ -1 in the second face of image planes, are hyperbola curved surface, and
It is convex to image planes, the angle of visual field of optical system so can be equally improved, the astigmatism of system can also be reduced.
First lens 1 are spherical lens, and the second lens 2 are non-spherical lens, and both are used cooperatively, and efficiently solve system
The various aberration equalization problems such as aberration.
In order to reduce angle change when light reflects between each lens, reduce the distortion of imaging, therefore in structure
Reduce the distance between the first lens 1 and the second lens 2 as much as possible, while it is saturating to increase the second lens 2 and the 3rd as much as possible
The distance between mirror 3.
In order to realize high-resolution, the 3rd lens 3 are hyp aspherical using two sides, and the circular cone on its two sides is secondary
Curve coefficients are satisfied by k ＜ -1, and this causes camera lens to be not only able to the curvature of field of good correction system, can also improve image plane center
With the resolution ratio at edge.
Second lens 2, the 3rd lens 3 and the 4th lens 4 are plastic aspheric lens, not only can further reduce light
System, with existing focus deviation under visible light conditions, lifts infrared resolving power, can also pass through three under the conditions of infrared
The collocation of person face type, the astigmatism of system is corrected well, improve the resolution ratio of system.
Infrared completely confocal in order to realize, the 3rd lens 3 use low dispersive plastic non-spherical lens, and the 4th lens 4 use
High dispersive plastic non-spherical lens, and the interval between two eyeglasses is smaller, is fitted close, and serves cemented doublet correction aberration
Effect.
In addition, high chromatic dispersion material is used cooperatively with low chromatic dispersion material, the two level as caused by infrared light can be also corrected well
Spectrum, optimize axial chromatic aberration so that camera lens under the conditions of white light and infrared light, can be obtained in image planes clearly as, from
And meet infrared confocal requirement.
In order that camera lens in high temperature or low temperature, reaches the requirement of low temperature shift, and in design, the first lens 1 and the 5th
Lens 5 use glass spherical lens, and the second lens 2, the 3rd lens 3 and the 4th lens 4 use plastic aspheric lens.In addition,
Suitable eyeglass material is selected, and reasonably distributes focal power, while lens shape of scientifically arranging in pairs or groups, reach camera lens with this
Focus drifting under high temperature or low temperature environment is differentiated apart from minimum purpose so as to efficiently solve caused by temperature change
Rate declines or focus drifting problem.
In order to realize camera lens requirement confocal under high temperature and cryogenic conditions, the second lens 2 are using aspherical falcate just
Lens, and focal power is smaller.Meanwhile compensate with other several power of lens, eliminated with this due to high temperature or low
Focal shift caused by the expansion or shrinkage of plastic aspherical element under the conditions of temperature so that camera lens at different temperatures, still can be with
Blur-free imaging.
Wherein：The focal length of first lens 1 is -4 ~ -6mm；The focal length of second lens 2 is 12 ~ 14mm；Jiao of 3rd lens 3
Away from for 7 ~ 9mm；The focal length of 4th lens 4 is -4 ~ -6mm；The focal length of 5th lens 5 is 4 ~ 6mm.Meanwhile second lens the 2, the 3rd
The combined focal length of the lens 4 of lens 3 and the 4th is 22 ~ 24mm.
In addition, the optical lens is designed using wide spectrum, chromatic aberration correction is carried out in 400nm ~ 700nm spectral regions, no
But make image color beautiful and sharp keen, also with good color reducibility, the effect of imaging is directly observed closer to human eye
Effect.Meanwhile 800nm ~ 940nm near infrared spectrum aberration has been also corrected for, realize infrared confocal effect.
By object plane to image planes, sensitive chip 6 is provided with after the 5th lens 5, the resolution ratio of the sensitive chip can meet 130
The different requirements of ten thousand ~ 5,000,000 pixels.Meanwhile between the 5th lens 5 and sensitive chip 6, optical filter 8 is also equipped with, filtered with it
Veiling glare needed for falling outside wave band, so as to improve as matter.In addition, in design, the institute of sensitive chip protective glass 9 has been taken into full account
The aberration of introducing, and corrected in the design process, so as to improve the quality of camera lens.
Below, an angle of visual field is enumerated as 150 °, and resolution ratio be 5,000,000 pixels, and mechanical overall length, can within 22.5mm
The actual design embodiment of normal work in the environment of -40 DEG C ~+80 DEG C：
The system data of table 1
| Number in face | Noodles type | Radius | Thickness | Material | k |
| OBJ | Object plane | Infinity | Infinity | 0 | |
| 1 | Sphere | 28.36 | 0.7 | H-LAF52 | 0 |
| 2 | Sphere | 4.28 | 3.106 | 0 | |
| 3 | It is aspherical | -5.21 | 3.614 | PC | 1.127 |
| 4 | It is aspherical | -3.48 | 3.068 | -1.919 | |
| 5 | It is aspherical | 17.88 | 1.589 | F52R | -53.779 |
| 6 | It is aspherical | -4.93 | 0.224 | -1.555 | |
| STO | Diaphragm | Infinity | 0.435 | 0 | |
| 8 | It is aspherical | -6.29 | 0.578 | PC | -20.317 |
| 9 | It is aspherical | 5.74 | 0.033 | 6.163 | |
| 10 | Sphere | 6.718 | 2.355 | H-QK3L | 0 |
| 11 | Sphere | -4.135 | 1.5 | 0 | |
| 12 | Sphere | Infinity | 0.85 | H-K9L | 0 |
| 13 | Sphere | Infinity | 4.223 | 0 | |
| IMA | Image planes | Infinity | 0 |
The asphericity coefficient of table 2~
| Number in face | |||||||
| 3 | 0 | 1.054e-03 | 1.520e-04 | -2.752e-05 | 3.424e-06 | -1.680e-07 | 0 |
| 4 | 0 | 4.304e-04 | -1.040e-04 | 6.305e-06 | -3.501e-07 | -1.396e-09 | 0 |
| 5 | 0 | 1.100e-02 | 2.149e-04 | -5.057e-05 | 2.119e-05 | 5.047e-08 | 0 |
| 6 | 0 | 2.100e-02 | -1.524e-03 | 1.234e-03 | 7.450e-05 | 3.276e-06 | 0 |
| 8 | 0 | 1.700e-02 | -7.796e-03 | 1.260e-03 | 3.150e-05 | -1.950e-05 | 0 |
| 9 | 0 | 2.200e-02 | -9.860e-03 | 1.926e-03 | -1.575e-04 | -4.309e-06 | 0 |
In above-mentioned Tables 1 and 2：
What face numbering 1 and 2 represented respectively is the first face and the second face of the first lens 1, and the material of the first lens 1 is H-
LAF52；
What face numbering 3 and 4 represented respectively is the first face and the second face of the second lens 2, and the material of the second lens 2 is PC；
What face numbering 5 and 6 represented respectively is the first face and the second face of the 3rd lens 3, and the material of the 3rd lens 3 is
F52R；
What face numbering 8 and 9 represented respectively is the first face and the second face of the 4th lens 4, and the material of the 4th lens 4 is PC；
What face numbering 10 and 11 represented respectively is the first face and the second face of the 5th lens 5, and the material of the 5th lens 5 is H-
QK3L；
What face numbering 12 and 13 represented respectively is the first face and the second face of optical filter 8, and the substrate material of optical filter 8 is H-
K9L。
Wherein, above-mentioned first face refers to the face towards object plane side, and the second face refers to the face towards image planes.
Finally illustrate, above example only to illustrate the technical solution of the utility model and unrestricted, this area
Other modifications or equivalent substitution that those of ordinary skill is made to the technical solution of the utility model, without departing from this practicality
The spirit and scope of new technique scheme, it all should cover among right of the present utility model.
Claims (6)
- A kind of 1. ultra-wide angle day and night confocal opticses camera lens, it is characterised in that：Including what is set gradually along optical axis from object plane to image planes First lens, the second lens, the 3rd lens, the 4th lens, the 5th lens and sensitive chip, the 3rd lens and the 4th lens Between diaphragm is set, first lens and the 5th lens are glass spherical lens, second lens, the 3rd lens and the 4th Lens are plastic aspheric lenes, first lens, the second lens, the 3rd lens, the focal length of the 4th lens and the 5th lens It is respectively negative, positive, positive and negative, just.
- 2. ultra-wide angle according to claim 1 day and night confocal opticses camera lens, it is characterised in that：The object plane of first lens Side is convex surface, and image planes side is concave surface；The object plane side of second lens is concave surface, and image planes side is convex surface；3rd lens are Biconvex lens；4th lens are biconcave lens；5th lens are biconvex lens.
- 3. ultra-wide angle according to claim 2 day and night confocal opticses camera lens, it is characterised in that：First lens are low color Dissipate lens；Second lens are high dispersing lens；3rd lens are low dispersing lens；4th lens are high dispersion Lens；5th lens are ED lens.
- 4. ultra-wide angle according to any one of claim 1 ~ 3 day and night confocal opticses camera lens, it is characterised in that：Described second The aspherical face type of lens, the 3rd lens and the 4th lens meets equation：,Wherein：C is the curvature corresponding to radius, and y is radial coordinate, and the unit of radial coordinate is identical with length of lens unit, and k is Circular cone whose conic coefficient；As k ＜ -1, the face shape curve of lens is hyperbola；As k=- 1, the face shape curve of lens is parabola；As -1 ＜ k ＜ 0, the face shape curve of lens is ellipse；As k=0, the face shape curve of lens is circle；As k ＞ 0, the face shape curve of lens is oblate；~The coefficient corresponding to each radial coordinate is represented respectively.
- 5. ultra-wide angle according to claim 1 day and night confocal opticses camera lens, it is characterised in that：5th lens with it is photosensitive Optical filter and sensitive chip protective glass are set gradually between chip.
- 6. ultra-wide angle according to claim 1 day and night confocal opticses camera lens, it is characterised in that：The size of the sensitive chip For 1/2.5 ", resolution ratio is 1,300,000 ~ 5,000,000 pixels.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108303756A (en) * | 2018-03-12 | 2018-07-20 | 广东欧珀移动通信有限公司 | Laser projection module, depth camera and electronic device |
| TWI684804B (en) * | 2018-05-04 | 2020-02-11 | 先進光電科技股份有限公司 | Optical Image Capturing System |
| CN115236852A (en) * | 2022-08-16 | 2022-10-25 | 中国科学院上海技术物理研究所 | Optical compensation device of all-optical-path low-temperature system and design method |
-
2017
- 2017-04-27 CN CN201720457078.5U patent/CN206671663U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108303756A (en) * | 2018-03-12 | 2018-07-20 | 广东欧珀移动通信有限公司 | Laser projection module, depth camera and electronic device |
| TWI684804B (en) * | 2018-05-04 | 2020-02-11 | 先進光電科技股份有限公司 | Optical Image Capturing System |
| CN115236852A (en) * | 2022-08-16 | 2022-10-25 | 中国科学院上海技术物理研究所 | Optical compensation device of all-optical-path low-temperature system and design method |
| CN115236852B (en) * | 2022-08-16 | 2024-01-26 | 中国科学院上海技术物理研究所 | Optical compensation device of all-optical-path low-temperature system and design method |
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