CN207164347U - A kind of large aperture ultra high-definition day and night confocal optical system - Google Patents
A kind of large aperture ultra high-definition day and night confocal optical system Download PDFInfo
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Abstract
The utility model provides a kind of large aperture ultra high-definition day and night confocal optical system, 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, 6th lens and sensitive chip, diaphragm is set between 3rd lens and the 4th lens, first lens, 3rd lens and the 6th lens are glass spherical lens, second lens, 4th lens and the 5th lens are plastic aspheric lenes, first lens, second lens, 3rd lens, 4th lens, the focal length of 5th lens and the 6th lens is followed successively by negative, it is negative, just, just, it is negative, just.The utility model optical system can not only overcome the deficiencies of eyeglass number in this kind of optical system is more, the resolution ratio under large aperture 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 large aperture ultra high-definition day and night confocal opticses system
System.
Background technology
With the rapid development of science and technology and the appearance of high sensitive chip, original video monitoring can not meet the phase of people
Hope, develop and the large aperture camera lens of clear bright colored picture is obtained under low light condition turn into a kind of new pursuit.Monitoring
In the middle large aperture camera lens used, although ensure that the premise of large aperture, more or less there is volume is big, quality
Weigh, infrared confocal effect is undesirable or some problems such as resolution ratio is low.In order that large aperture optical system more meets market and needed
Ask, usual emphasis improves some deficiencies of optical system, although there are some large apertures, infrared confocal optical system is fine appears
Angle, but because the eyeglass number used in system is more so that the resolution ratio of large aperture is unsatisfactory.Meanwhile also increase cost
And volume, it is impossible to meet the expectation in market.
Publication No.CN106154500APatent disclose a kind of big wide-angle high definition optical system of low cost, along optical axis
Comprised at least successively from object plane to image planes：First lens, the second lens, the 3rd lens and the 4th lens；The thing of first lens
Surface side is plane, and image planes side is concave surface, and its focal power is negative；The object plane side of second lens is convex surface, and image planes side is convex surface, its light
Focal power is just；The object plane side of 3rd lens is plane, and image planes side is convex surface, and its focal power is just；The object plane side of 4th lens is
Concave surface, image planes side are convex surface, and its focal power is negative.The utility model is mainly made up of 4 pieces of lens, and lens piece number is few, structure letter
It is single, compared with same specification product, greatly reduce cost；With big wide-angle, day and night large aperture, the favorable optical performance such as confocal, and have
There are good high temperature imaging effect, the premium properties of 2M pixel resolutions.But lens used are glass in the optical system
Material, weight is big, while FNo. is 2.0, and it is very narrow to adapt to spectral region, it is impossible to meets the market demand well, resolution ratio has
Treat further to improve.
Publication No.CN104849835APatent disclose a kind of flake monitoring optical system, along optical axis from object plane to
Image planes comprise at least successively：Front lens group and rear lens group, the front lens group include the first lens, the second lens, the 3rd saturating
Mirror and the 4th lens；The rear lens group includes the 5th lens, the 6th lens, the 7th lens and the 8th lens.Before it
8 pieces of lens, lens piece number are less, simple in construction altogether for lens group and rear lens group；With large aperture, high-resolution, day and night confocal
Deng premium properties.But lens numbers are more used by the optical system, and 8 pieces of lens are glass material, and weight is big, cost
Height, resolution ratio is not high, it is impossible to meets the needs of day and night confocal well.
Publication No. CN106814442A patent discloses a kind of optical lens, including the first lens group and the second lens
Group, for the first lens group between Zoom Side and reduced side, the first lens group, which has, bears brightness in the wrong, including the first lens, and first
Lens are plastic aspherical element, meniscus lens, and there is negative brightness in the wrong and the convex surface towards Zoom Side, the second lens group to be located at first
Between lens group and reduced side.Second lens group, which has, just bends brightness, including the second lens, the 3rd lens with negative brightness in the wrong
And the 4th lens, the second lens, the 3rd lens and the 4th lens have airspace each other two-by-two.Optical lens is worked as
In at least three lens Abbe number be more than 20, the material of at least one lens is glass, and at least one lens are spherical lens.
The optical lens of the utility model cost is cheap, miniaturization, slimming, high resolution, large aperture, low distortion and day and night confocal
In the case of, there is provided good optical qualities.The deficiencies of resolution ratio is low, aberration is big be present in the utility model optical lens, need into
One step improves.
Utility model content
Insufficient present in large aperture, day and night confocal optical system in order to overcome, the utility model will provide a kind of big light
Circle, day and night confocal optical system, the optical system can not only overcome that eyeglass number in this optical system is more, dividing under large aperture
The deficiencies of resolution is unsatisfactory, 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 large aperture ultra high-definition day and night confocal optical system, including first set gradually along optical axis from object plane to image planes
Lens, the second lens, the 3rd lens, the 4th lens, the 5th lens, the 6th lens and sensitive chip, the 3rd lens and
Diaphragm is set between four lens, and first lens, the 3rd lens and the 6th lens are glass spherical lens, and described second is saturating
Mirror, the 4th lens and the 5th lens are plastic aspheric lenes, first lens, the second lens, the 3rd lens, the 4th saturating
The focal length of mirror, the 5th lens and the 6th lens is followed successively by negative, negative, positive, 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；The object plane side of 3rd lens is convex surface, and image planes side is concave surface；4th lens are biconvex
Lens；5th lens are biconcave lens；6th lens are biconvex lens.
Preferably, first lens are low dispersing lens；Second lens are low dispersing lens；3rd lens
For low dispersing lens；4th lens are low dispersing lens；5th lens are high dispersing lens；6th lens are low color
Dissipate lens.
Preferably, the aspherical face type of second lens, the 4th lens and the 5th 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 6th lens and sensitive chip.
Preferably, the size of the sensitive chip is 1/2.7 ", resolution ratio is 4,000,000 ~ 6,000,000 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 large aperture, the day and night confocal optical system of ultra high-definition,
The optical system not only overcomes the deficiencies of eyeglass number in existing optical system is more, the resolution ratio under large aperture is unsatisfactory, also
Camera lens volume can be reduced, while production cost can be reduced again.In the utility model optical system, the object plane side of the first lens
For convex surface, image planes side is concave surface, and is spherical lens, and the object plane side of the second lens is concave surface, and image planes side is convex surface, and is aspheric
Face lens, both are used cooperatively, and not only efficiently solve the various aberration equalization problems such as the aberration of system, first after can also reducing
The appearance and size of part；3rd lens are the low dispersion lens for having positive light coke, and the image planes side of the 3rd lens is concave surface, no
The angle of visual field of system can only be increased, moreover it is possible to well in control system light tendency, while can increase the 3rd lens with
The distance between diaphragm；4th lens 4 are the low dispersive plastic non-spherical lenses for having positive light coke, using after diaphragm and close
The thermally sensitive characteristic of lens of diaphragm and the reasonable distribution of each lens strength, make whole system in temperature change
In the case of, focal power has the variable quantity of very little, so as to effectively improve asking for the systemic resolution decline as caused by temperature change
Topic；5th lens are that high dispersive plastic is aspherical, and the interval between the 4th lens is smaller, are fitted close, serve gluing
Eyeglass corrects the effect of aberration, and can efficiently solve diaphragm lens eccentricity sensitive issue nearby；6th lens are tools
There are the low dispersion lens of positive light coke, control periphery chief ray incident well to the angle of sensitive chip, improve week
Side illumination, while the balanced aberration of energy, possibility is provided to reach optimum image plane；First lens, the 3rd lens and the 6th mirror use glass
Glass spherical lens, using the stability of glass, reduce susceptibility of the system to temperature；Second lens, the 4th lens and the 5th are saturating
Mirror uses plastic aspheric lens, and positive negative power collocation uses, and mutually compensates for each parameter of lens, effectively improve by
Systemic resolution caused by temperature change declines.
Day and night confocal optical system uses large aperture to the utility model large aperture ultra high-definition, and FNO. 1.4, the angle of visual field is reachable
To more than 110 °, while also ensure ultrahigh resolution.The utility model large aperture ultra high-definition day and night confocal optical system can
Realize day and night confocal, monitoring in achievable 24 hours.The utility model large aperture ultra high-definition day and night confocal optical system using temperature
Compensation Design is spent, can be worked in the environment of -40 DEG C ~+80 DEG C, not defocus.The utility model large aperture ultra high-definition is day and night common
The form that focus optical system is combined using glass modeling, not only ensure that the performance of optical system, and can reduce cost, simplify knot
Structure, mitigate weight, also help production in enormous quantities, accord with the demands of the market.The utility model large aperture ultra high-definition day and night confocal light
System using low chromatic dispersion material while, also the position of diaphragm is optimized, by diaphragm be arranged on the 3rd lens and
Between 4th lens, picture photo matter is improved.
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 large aperture ultra high-definition day and night confocal optical system；
Fig. 2：The spherical aberration curve map of the utility model large aperture ultra high-definition day and night confocal optical system；
Fig. 3：The utility model large aperture ultra high-definition day and night curvature of field of confocal optical system and distortion curve figure；
Fig. 4：The chromatic curve figure of the utility model large aperture ultra high-definition day and night confocal optical system；
Fig. 5：The MTF curve figure of the utility model large aperture ultra high-definition day and night confocal optical system；
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, 6- the 6th are saturating
Mirror, 7- sensitive chips, 8- diaphragms, 9- optical filters, 10- 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 large aperture ultra high-definition day and night confocal optical system, it is made up of 6 pieces of glass and plastic lens mixing,
Include the first lens 1 set gradually along optical axis from object plane to image planes, the second lens 2, the 3rd lens 3, the 4th lens 4,
Five lens 5, the 6th lens 6 and sensitive chip 7, diaphragm 8 is set between the 3rd lens and the 4th lens.
First lens 1, the 3rd lens 3 and the 6th lens 6 are spherical lens, and material is glass, and the second lens the 2, the 4th are saturating
The lens 5 of mirror 4 and the 5th are non-spherical lens, and material is plastic cement.
First lens 1, the second lens 2, the 3rd lens 3, the 4th lens 4, Jiao of the 5th lens 5 and the 6th lens 6
It is negative, negative, positive, positive and negative, just away from being followed successively by.
The object plane side of first lens 1 is convex surface, and image planes side is concave surface, is meniscus lens；The thing of second lens 2
Surface side is concave surface, and image planes side is convex surface, is meniscus lens；The object plane side of 3rd lens 3 is convex surface, and image planes side is concave surface,
For meniscus lens；4th lens 4 are biconvex lens；5th lens 5 are biconcave lens；6th lens 6 are double
Convex lens.
The first lens 1 are low dispersing lens in the utility model optical system；Second lens 2 are low dispersing lens；3rd
Lens 3 are low dispersing lens；4th lens 4 are low dispersing lens；5th lens 5 are high dispersing lens；6th lens are low color
Dissipate lens.
The aspherical face type satisfaction side of second lens 2, the 4th lens 4 and the 5th lens 5 in the utility model optical system
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.Can accurately it be set two before and after lens by above parameter
Individual aspherical geomery.
In the utility model optical system, the first lens 1 are low dispersion, the glass lens for having negative power, and its
Object plane side is convex surface, so as to be not only the light of the big angle of visual field of camera lens importing, can also efficiently control axial chromatic aberration；Together
When, for comparing glass lens due to glass lens, there is high temperature resistant, corrosion-resistant, damage resistant, so as to well
Protect camera lens, be camera lens under the factors such as assembling, transport, high temperature, low temperature, Qiang Guang, dust storm, be hardly damaged, so as to reach extension
The effect of service life.
Second lens 2 and the 5th lens 5 use two sides as hyp non-spherical lens, its circular cone whose conic coefficient
It is satisfied by k ＜ -1.Wherein, the first face of the second lens 2 is that object plane side is concave surface, can not only make rim ray and chief ray
With preferable collimation, while inclination angle of the chief ray to optical axis is in turn ensured that, while its second face is that image planes side is convex surface, this
Sample can equally improve the angle of visual field of optical system, additionally it is possible to the curvature of field of correction system well, while can improve in image planes
The resolution ratio of the heart and edge.
First lens 1 use diverging meniscus lens, and are spherical lens, and the second lens 2 use positive meniscus lens, and are aspheric
Face lens, both are used cooperatively, and not only efficiently solve the various aberration equalization problems such as the aberration of system, first after can also reducing
The appearance and size of part.
3rd lens 3 are the low dispersion lens for having positive light coke, and the image planes side of the 3rd lens 3 is concave surface, not only
The angle of visual field of system can be increased, moreover it is possible to well in control system light tendency, while the 3rd lens 3 and light can be increased
Door screen the distance between 8.
In order to reduce angle change when light reflects between each lens, reduce image deformation, therefore the utility model
Reduce the distance between the first lens 1, the second lens 2 and the 3rd lens 3 as much as possible in structure, while increase as much as possible
The distance between 3rd lens 3 and the 4th lens 4.
4th lens 4 are the low dispersive plastic non-spherical lenses for having positive light coke, and the face type on two sides is oblateness, its
Circular cone whose conic coefficient is satisfied by k ＞ 0.Using after diaphragm 8 and close to diaphragm 8 the thermally sensitive characteristic of lens and
The reasonable distribution of each lens strength, making whole system in the case of temperature change, focal power has the variable quantity of very little, so as to
Effectively improve the problem of systemic resolution as caused by temperature change declines.Having for camera lens front end can also be efficiently controlled simultaneously
Bore and optic back focal are imitated, eliminates the senior aberration and distortion aberration of system.
In addition, select suitable eyeglass material, while the collocation lens shape of science, camera lens is made in high temperature or low with this
Under warm environment, the drift distance of focus is minimum, so as to more efficiently solve due under resolution ratio caused by temperature change
Drop or focus drifting problem；Simultaneously this not only can further reduce optical system under the conditions of infrared with visible light conditions
Existing focus deviation, infrared resolving power is lifted, the second lens 2, the 3rd lens 3 and the three of the 4th lens 4 can also be passed through
The collocation of face type, the astigmatism of system is corrected well, improve the resolution ratio of system.
5th lens 5 are that high dispersive plastic is aspherical, and the interval between the 4th lens 4 is smaller, are fitted close, play
The effect of cemented doublet correction aberration, and diaphragm lens eccentricity sensitive issue nearby can be efficiently solved.
In addition, being used cooperatively for high chromatic dispersion material and low chromatic dispersion material, can also be corrected two as caused by infrared light well
Level 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,
So as to meet infrared confocal requirement.
6th lens 6 are the low dispersion lens for having positive light coke, control periphery chief ray incident well and arrive
The angle of sensitive chip, periphery illumination, while the balanced aberration of energy are improved, possibility is provided to reach optimum image plane.
The utility model optical system uses each symmetric form for setting three lens before and after diaphragm 8, better assures that
System tolerance is loose, and advantage is provided for production.
In order that camera lens in high temperature or low temperature, reaches the requirement of low temperature shift, in design, the first lens the 1, the 3rd are saturating
The mirror 6 of mirror 3 and the 6th uses glass spherical lens, using the stability of glass, reduces susceptibility of the system to temperature；Second lens
2nd, the 4th lens 4 and the 5th lens 5 use plastic aspheric lens, and positive negative power collocation uses, and makes each parameter phase of lens
Mutually compensation, effectively improve the systemic resolution as caused by temperature change and decline.
Wherein：The focal length of first lens 1 is -8 ~ -6mm；The focal length of second lens 2 is -40 ~ -38mm；3rd lens 3
Focal length is 10 ~ 12mm；The focal length of 4th lens 4 is 5 ~ 7mm；The focal length of 5th lens 5 is -6 ~ -4mm；The focal length of 6th lens 6
For 6 ~ 8mm.Meanwhile the 4th the combined focal lengths of lens 4 and the 5th lens 5 be 256 ~ 258mm.
In addition, this optical system 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 7 is provided with after the 6th lens 6, the size of the sensitive chip is 1/2.7 ", differentiate
Rate can meet the different requirements of 200 ~ 6,000,000 pixels.Meanwhile between the 6th lens 6 and sensitive chip 7, it is also equipped with filtering
Piece 9, sensitive chip can not only be played a protective role, while the veiling glare outside required wave band can be filtered, so as to improve as matter.
In addition, in design, the introduced aberration of the sensitive chip protective glass 10 of sensitive chip 7 has been taken into full account,
And corrected in the design process, so as to improve the quality of camera lens.
Below, an angle of visual field is enumerated as 110 °, and resolution ratio be 6,000,000 pixels, and mechanical overall length, can within 23.5mm
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 | Radius | Thickness | Material | k |
| OBJ | Object plane | Infinity | Infinity | 4000 | 0 | |
| 1 | Sphere | 21.587 | 22.281 | 0.616 | H-ZK9B | 0 |
| 2 | Sphere | 4.245 | 3.586 | 3.495 | 0 | |
| 3 | It is aspherical | -4.596 | -3.586 | 2.651 | K26R | -1.399 |
| 4 | It is aspherical | -6.823 | -5.415 | 0.100 | -4.732 | |
| 5 | Sphere | 6.267 | 7.878 | 2.445 | H-ZLAF56B | 0 |
| 6 | Sphere | 78.935 | 77.303 | 2.400 | 0 | |
| STO | Diaphragm | Infinity | Infinity | 0.154 | 0 | |
| 8 | It is aspherical | 11.582 | 12.673 | 1.939 | K26R | 1.787 |
| 9 | It is aspherical | -4.685 | -3.561 | 0.221 | 0.382 | |
| 10 | It is aspherical | -3.368 | -2.485 | 0.839 | EP5000 | -5.046 |
| 11 | It is aspherical | -10.498 | -11.389 | 0.100 | -113.309 | |
| 12 | Sphere | 11.164 | 10.055 | 2.950 | FCD515 | 0 |
| 13 | Sphere | -5.962 | -6.925 | 4.000 | 0 | |
| 14 | Sphere | Infinity | Infinity | 0.800 | H-K9L | 0 |
| 15 | Sphere | Infinity | Infinity | 0.677 | 0 | |
| IMA | Image planes | Infinity | Infinity | 0 |
The asphericity coefficient of table 2~
| Number in face | |||||||
| 3 | 0 | 2.244e-03 | -9.593e-05 | 4.649e-06 | -2.531e-07 | 0.000 | 0 |
| 4 | 0 | -9.562e-04 | 1.027e-04 | -4.666e-06 | 3.907e-09 | 0.000 | 0 |
| 8 | 0 | 2.061e-03 | -1.942e-04 | -5.923e-05 | 8.728e-06 | -1.377e-06 | 0 |
| 9 | 0 | 1.400e-02 | -2.479e-03 | 3.533e-04 | -2.549e-05 | 1.046e-06 | 0 |
| 10 | 0 | -3.771e-03 | 8.201e-04 | -2.428e-04 | 4.088e-05 | -2.126e-06 | 0 |
| 11 | 0 | 9.284e-03 | -6.551e-04 | 6.108e-05 | -3.031e-06 | 1.451e-08 | 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-
ZK9B；
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
K26R；
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 H-
ZLAF56B；
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
K26R；
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
EP5000；
What face numbering 12 and 13 represented respectively is the first face and the second face of the 6th lens 6, and the material of the 6th lens 6 is
FCD515；
What face numbering 14 and 15 represented respectively is the first face and the second face of optical filter 9, and the substrate material of optical filter 9 is H-
K9L。
Wherein, first face refers to the one side towards object plane side, and the second face refers to the one side towards image planes.
By using above technical scheme, Fig. 2 gives the spherical aberration curve of optical system, it is seen that in visible ray wide spectrum model
Enclose interior spherical aberration and be less than 0.05mm；Fig. 3 gives the curvature of field and distortion curve of optical system, and the curvature of field is minimum, and it is smooth to embody image planes；
Fig. 4 provides chromatic curve, it is seen that aberration is less than 4um, effectively overcomes purple boundary phenomenon；Fig. 5 gives MTF curve, resolution ratio water
It is flat to have reached 6,000,000 pixels, therefore the integrated optical excellent performance of this optical system.
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 (5)
- A kind of 1. large aperture ultra high-definition day and night confocal optical system, it is characterised in that：Including along optical axis from object plane to image planes successively The first lens, the second lens, the 3rd lens, the 4th lens, the 5th lens, the 6th lens and the sensitive chip set, described the Diaphragm is set between three lens and the 4th lens, and first lens, the 3rd lens and the 6th lens are glass spherical lens, institute It is plastic aspheric lenes to state the second lens, the 4th lens and the 5th lens, first lens, the second lens, the 3rd lens, The focal length of 4th lens, the 5th lens and the 6th lens is followed successively by negative, negative, positive, positive and negative, just.
- 2. large aperture ultra high-definition according to claim 1 day and night confocal optical system, it is characterised in that：First lens Object plane side be convex surface, image planes side is concave surface；The object plane side of second lens is concave surface, and image planes side is convex surface；Described 3rd The object plane side of lens is convex surface, and image planes side is concave surface；4th lens are biconvex lens；5th lens are that concave-concave is saturating Mirror；6th lens are biconvex lens.
- 3. large aperture ultra high-definition according to claim 2 day and night confocal optical system, it is characterised in that：First lens For low dispersing lens；Second lens are low dispersing lens；3rd lens are low dispersing lens；4th lens are Low dispersing lens；5th lens are high dispersing lens；6th lens are low dispersing lens.
- 4. large aperture ultra high-definition according to any one of claim 1 ~ 3 day and night confocal optical system, it is characterised in that：Institute The aspherical face type for stating the second lens, the 4th lens and the 5th 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. large aperture ultra high-definition according to claim 1 day and night confocal optical system, it is characterised in that：6th lens Optical filter and sensitive chip protective glass are set gradually between sensitive chip.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107422462A (en) * | 2017-09-25 | 2017-12-01 | 河南翊轩光电科技有限公司 | A kind of large aperture ultra high-definition day and night confocal optical system |
| CN108761745A (en) * | 2018-07-25 | 2018-11-06 | 广东弘景光电科技股份有限公司 | Wide-angle optics and its camera module of application |
| CN110794551A (en) * | 2018-08-01 | 2020-02-14 | 宁波舜宇车载光学技术有限公司 | Optical lens |
| CN111830672A (en) * | 2019-04-18 | 2020-10-27 | 宁波舜宇车载光学技术有限公司 | Optical lens and imaging apparatus |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107422462A (en) * | 2017-09-25 | 2017-12-01 | 河南翊轩光电科技有限公司 | A kind of large aperture ultra high-definition day and night confocal optical system |
| CN108761745A (en) * | 2018-07-25 | 2018-11-06 | 广东弘景光电科技股份有限公司 | Wide-angle optics and its camera module of application |
| CN108761745B (en) * | 2018-07-25 | 2023-06-16 | 广东弘景光电科技股份有限公司 | Wide-angle optical system and camera module using same |
| CN110794551A (en) * | 2018-08-01 | 2020-02-14 | 宁波舜宇车载光学技术有限公司 | Optical lens |
| CN110794551B (en) * | 2018-08-01 | 2022-01-14 | 宁波舜宇车载光学技术有限公司 | Optical lens |
| CN111830672A (en) * | 2019-04-18 | 2020-10-27 | 宁波舜宇车载光学技术有限公司 | Optical lens and imaging apparatus |
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