CN109116525A - A kind of optical lens of no thermalization flake high definition - Google Patents
A kind of optical lens of no thermalization flake high definition Download PDFInfo
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- CN109116525A CN109116525A CN201811155292.0A CN201811155292A CN109116525A CN 109116525 A CN109116525 A CN 109116525A CN 201811155292 A CN201811155292 A CN 201811155292A CN 109116525 A CN109116525 A CN 109116525A
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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
- G02B13/06—Panoramic objectives; So-called "sky lenses" including panoramic objectives having reflecting surfaces
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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
- 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
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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
- 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
- G02B13/001—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras
- G02B13/0055—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras employing a special optical element
- G02B13/006—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras employing a special optical element at least one element being a compound optical element, e.g. cemented elements
Abstract
The present invention discloses a kind of optical lens of no thermalization flake high definition, belong to optical lens technology field, including the first lens set gradually from object plane to image planes along optical axis, second lens, the third lens, 4th lens, 5th lens, 6th lens, 7th lens and sensitive chip, diaphragm wherein is set between the 4th lens and the 5th lens, first lens, second lens, the third lens, 5th lens, 6th lens, 7th lens are glass spherical lens, 4th lens are plastic aspheric lenes, first lens, second lens, the third lens, 4th lens, 5th lens, 6th lens, the focal length of 7th lens is successively negative, it is negative, just, just, just, just, it is negative.The camera lens is in+80 DEG C of high temperature or -40 DEG C of low temperature declines without resolution ratio or focus drifting problem, and under the conditions of white light and infrared light, can obtain in image planes clearly as, no veiling glare, image quality is high.
Description
Technical field
The invention belongs to optical lens technology fields, more particularly, to a kind of optical lens of no thermalization flake high definition.
Background technique
Traditional tight shot fixes camera lens and pedestal when focusing clearly at+20 DEG C of room temperature, when environment temperature
Degree shoot on location in+70 DEG C of high temperature or -30 DEG C of low temperature, which will appear to practise physiognomy, becomes empty phenomenon, that is, the focusing that we often say is unclear
Phenomenon (if fixed device cancelled, is focused, camera lens can focus again under the conditions of+70 DEG C of high temperature or -30 DEG C of low temperature
Clearly, when but being to revert to+20 DEG C of room temperature, the camera lens focused again can become empty again) --- this phenomenon Producing reason be due to
The natural phenomena of " expanding with heat and contract with cold " causes, and basic reason is due to pedestal and camera lens thermally expands under the high temperature conditions or low temperature item
Cold events under part, so that camera lens generates variation with respect to the position of sensitive chip, and this variation is the optics scape of lens design
Deep institute is irreparable, to cause camera lens under high temperature or low temperature condition as becoming empty, however as society be constantly progressive with
Development, the development step of safety-security area are also constantly accelerated, and various intelligent high-definition video cameras are used widely in every field.By
In using widely, use condition also requires higher and higher.Therefore, it develops (present in -30 DEG C of+70 DEG C of high temperature or low temperature
Most of company has required -40 DEG C of+80 DEG C of high temperature or low temperature) under the conditions of carry out shoot on location practise physiognomy it is constant it is empty also become one kind must
It need ask.
Have appeared on the market camera lens using special material pedestal (pedestal using some special materials such as PPS,
LCP A470, LCP B230, GSN-2050DF PC+50%GF, etc. to molding die service life, there are larger impacts) make up
Deflection during " expanding with heat and contract with cold "！In addition some more high-end camera lenses then will use pedestal it is fixed after can by motor into
The structure focused again to the adjusting of whorl of base cylinder of row, this processing mode there are it is at high cost, higher to material requirements,
The defects of pedestal formed precision unstable (die wear is very fast), in addition traditional fixed-focus fish eye lens is under the irradiation of normal light source
Shoot on location gland outer ring is very easy to generate cyclic annular or crescent shape veiling glare, and veiling glare phenomenon becomes apparent from when light source is reinforced, special
Be not intense light source at gland when.
Chinese patent (publication number CN108388004A) discloses a kind of starlight grade high definition day and night confocal optics camera lens, belongs to light
Learn lens technology field comprising the first lens for being set gradually from object plane to image planes along optical axis, the second lens, the third lens,
4th lens, the 5th lens, the 6th lens, the 7th lens and sensitive chip are arranged between second lens and the third lens
Diaphragm, first lens, the second lens, the third lens, the 4th lens, the 5th lens and the 6th lens are that glass spherical surface is saturating
Mirror, the 7th lens are plastic aspheric lenes, first lens, the second lens, the third lens, the 4th lens, the 5th
The focal length of lens, the 6th lens and the 7th lens is followed successively by negative, positive, negative, positive, positive and negative, just.The invention optical lens not only may be used
To change the deficiencies of eyeglass number in this optical lens is more, the resolution ratio under large aperture is unsatisfactory, camera lens volume can be also reduced,
Production cost can be reduced again simultaneously；The camera lens is standard lens, and field angle is 65 °.Chinese patent (publication number
CN107422462A) a kind of large aperture ultra high-definition day and night confocal optical system is provided, technical field of optical is belonged to comprising
The first lens, the second lens, the third lens, the 4th lens, the 5th lens, the 6th set gradually from object plane to image planes along optical axis
Diaphragm, first lens, the third lens and the 6th are arranged in lens and sensitive chip between second lens and the 4th lens
Lens are glass spherical lens, and second lens, the 4th lens and the 5th lens are plastic aspheric lenes, and described first thoroughly
Mirror, the first lens, the third lens, the 4th lens, the 5th lens and the 6th lens focal length be successively negative, be negative, positive, is positive and negative,
Just.The invention optical system can not only overcome that eyeglass number in this kind of optical system is more, the resolution ratio under large aperture is unsatisfactory
The deficiencies of, camera lens volume can also be reduced, while production cost can be reduced again；The camera lens is wide-angle lens, and field angle is
135°.Above-mentioned two patent camera lenses can not achieve 360 ° of the visual field, and the two patents are mixed also by glass modeling to improve camera lens
Performance, but do not carry out disappearing veiling glare processing.
Summary of the invention
In view of this, in view of the deficiencies of the prior art, it is an object of the present invention to provide a kind of no thermalization flake high definition optics
Camera lens, the camera lens is in+80 DEG C of high temperature or -40 DEG C of low temperature declines without resolution ratio or focus drifting problem, and in white light and infrared
Under the conditions of light, it can be obtained in image planes clearly as, no veiling glare, image quality is high.
In order to achieve the above objectives, the invention adopts the following technical scheme:
A kind of optical lens of no thermalization flake high definition, including set gradually from object plane to image planes along optical axis the first lens,
Two lens, the third lens, the 4th lens, the 5th lens, the 6th lens, the 7th lens and sensitive chip, wherein the 4th lens and
Diaphragm is set between the 5th lens, and first lens, the second lens, the third lens, the 5th lens, the 6th lens, the 7th are thoroughly
Mirror be glass spherical lens, the 4th lens be plastic aspheric lenes, first lens, the second lens, the third lens,
4th lens, the 5th lens, the 6th lens, the 7th lens focal length be successively negative, be negative, positive, just, just, it is positive and negative.
Further, optical filter and protection glass are set gradually between the 7th lens and sensitive chip.
Further, the size of the sensitive chip is 1/2.5 ", resolution ratio is 5,000,000 pixels.
Further, first lens are negative meniscus lens, and second lens are biconcave lens, and the third is saturating
Mirror is biconvex lens, and the 4th lens are biconvex lens, and the 5th lens are biconvex lens, and the 6th lens are biconvex
Lens, the 7th lens are negative meniscus lens.
Further, first lens are high-refractivity and low-dispersion lens, and second lens are the low color of high refractive index
Lens are dissipated, the third lens are high refractive index lens, and the 4th lens are low dispersing lens, and the 5th lens are ultralow
Dispersing lens, the 6th lens are low dispersing lens, and the 7th lens are high refractive low dispersive lens.
Further, delustring ink is wiped in the first rims of the lens plane painting.
The beneficial effects of the present invention are:
1, the present invention is a glass modeling mixing fish eye lens, and field angle is greater than 185 °, and the high definition camera lens of 5 mega pixels passes through glass
Modeling collocation can be realized no thermalization.Meanwhile by the spuious light processing that disappears, the veiling glare inside and outside image circle is eliminated, too small amount of mirror can be led to
Head is met customer need to obtain 360 ° of visuals field, to save cost.
2, the optical lens is arranged by 7 pieces of glass and plastic lens, and is limited the material of each eyeglass, focal length
Fixed, the shape of scientific setting lens reasonably distributes focal power, mutually compensates each parameter of lens；Wherein the first lens
Using meniscus shaped lens, the second lens are used cooperatively using double concave type type lens, not only can effectively solve the various aberrations of camera lens
Equalization problem, the outer dimension of element after can also reducing；The third lens are conducive to the correction of spherical aberration, can reduce plastics below
The outer dimension of eyeglass；4th lens carry out image planes to the empty burnt phenomenon of the empty burnt or low temperature of high temperature in camera lens high and low temperature reliability
Correction；5th lens correction, two auroral spectrum color difference is conducive to improve resolving power；6th lens and the 7th lens gluing use, and rise
The effect of cemented doublet correction color difference and spherical aberration is arrived；The camera lens decline without resolution ratio in -40 DEG C of+80 DEG C of high temperature or low temperature or
Focus drifting problem；Infrared resolving power is improved simultaneously, which can obtain under the conditions of white light and infrared light in image planes
To clearly as.
2, the application wipes the first rims of the lens plane using the painting of delustring ink, can substantially eliminate veiling glare to eliminate veiling glare,
Improve lens imaging quality.
Detailed description of the invention
Fig. 1 is the structural schematic diagram without thermalization flake high definition optical lens in the embodiment of the present invention 1；
Fig. 2 is the spherical aberration curve graph without thermalization flake high definition optical lens in embodiment 1；
Fig. 3 is the curvature of field and distortion curve without thermalization flake high definition optical lens in embodiment 1；
Fig. 4 is the chromatic curve figure without thermalization flake high definition optical lens in embodiment 1；
Fig. 5 is the MTF curve figure without thermalization flake high definition optical lens in embodiment 1；
Fig. 6 is veiling glare optical analysis figure at first in embodiment 2；
Fig. 7 is the partial structural diagram of the corresponding no thermalization flake high definition optical lens of Fig. 6；
Fig. 8 is the lens image at first before veiling glare improvement；
Fig. 9 is the lens image at first after veiling glare improvement；
In figure: the first lens of 1-, the second lens of 2-, 3- the third lens, the 4th lens of 7-, the 5th lens of 4-, the 6th lens of 5-, 6-
7th lens, 8- diaphragm, 9- optical filter, 10- protect glass, 11- sensitive chip.
Specific embodiment
The invention will be further described with reference to the accompanying drawings and examples.
Embodiment 1
As shown in Figure 1, a kind of no thermalization flake high definition optical lens, is mixed with plastic lens by 7 pieces of glass and is constituted, include edge
The first lens 1 that optical axis is set gradually from object plane to image planes, the second lens 2, the third lens 3, the 4th lens 7, the 5th lens 4,
6th lens 5, the 7th lens 6 and sensitive chip 11, are arranged diaphragm 8 between the 4th lens 7 and the 5th lens 4, the 7th lens 6 with
The protection glass 10 of optical filter 9 and sensitive chip is set gradually between sensitive chip 11.First lens 1, the second lens 2, third
Lens 3, the 5th lens 4, the 6th lens 5, the 7th lens 6 are glass spherical lens, and the 4th lens 7 are plastic aspheric lenes,
And the coke of first lens 1, the second lens 2, the third lens 3, the 4th lens 7, the 5th lens 4, the 6th lens 5 and the 7th lens 6
Away from be successively negative, it is negative, positive, just, just, it is positive and negative.
In optical lens of the present invention, the first lens 1 are the high-refractivity and low-dispersion glass lens with negative focal power,
Wherein Nd > 1.8,50 < Vd < 70, Nd indicate that the d optical index of eyeglass, Vd indicate that the d light Abbe constant of eyeglass, eyeglass are negative
Falcate, object plane side be it is convex, the light of big field angle can be not only imported for camera lens, axial color can also be efficiently controlled
In addition difference also helps the correction of spherical aberration；Simultaneously as glass lens have high temperature resistant, corrosion resistant compared to for glass lens
The features such as erosion, damage resistant, so as to protect camera lens well, make camera lens in assembly, transport, high temperature, low temperature, Qiang Guang, dust storm
Etc. under factors, be hardly damaged, to improve the reliability of camera lens.
Second lens 2 are the high-refractivity and low-dispersion glass lens with negative focal power, wherein Nd > 1.8,50 < Vd
< 70 is conducive to the correction of spherical aberration, and eyeglass is double concave type eyeglass, can not only increase the field angle of system, moreover it is possible to well
The tendency of light in control system, makes more luminous energy enter camera lens.And the negative meniscus lens of the first lens 1 and the second lens
2 double concave type lens are used cooperatively, and not only can effectively solve the various aberration equalization problems of camera lens, element after can also reducing
Outer dimension.
The third lens 3 are the glass of high refractive index lens with positive focal power, wherein Nd > 1.8, and eyeglass is biconvex
Lens are conducive to the correction of spherical aberration, can reduce the outer dimension of glass lens below.
4th lens 7 are the low dispersion aspherical plastic lens with positive light coke, wherein 50 < Vd < 70, eyeglass is double
Convex lens, the aspherical main function are carried out to the empty burnt phenomenon of the empty burnt or low temperature of high temperature in camera lens high and low temperature reliability
Image planes correction.In addition plus camera lens diaphragm 8 between the 4th lens 7 and the 5th lens 4, and close to the lens of diaphragm 8 to temperature
Sensitive characteristic and each power of lens is reasonably distributed, makes system in temperature change, the focal power of whole system only has
The variable quantity of very little effectively improves the decline of the systemic resolution as caused by temperature change.Mirror can also be effectively controlled simultaneously
The effective aperture and optic back focal of head front end, the senior aberration and distorted image for eliminating system become.I.e. initial design when, do not use
Plastic aspherical element finds in high/low temperature reliability Simulation evaluation, " burnt variable quantity after mechanism when high temperature (+80 DEG C) "-" high temperature (+
80 DEG C) optic back focal variable quantity " it is more than+0.015mm；" burnt variable quantity after low temperature (- 40 DEG C) mechanism "-" low temperature (- 40 DEG C) optics
Burnt variable quantity afterwards " is more than -0.015mm；It is not much different with previous camera lens high temperature performance, high/low temperature is made up by plastic aspherical element
Burnt variation afterwards, " burnt variable quantity after mechanism when high temperature (+80 DEG C) "-" high temperature (+80 DEG C) optic back focal variable quantity " is no more than now
±0.002mm；" after low temperature (- 40 DEG C) mechanism burnt variable quantity "-" low temperature (- 40 DEG C) optic back focal variable quantity " be no more than ±
0.002mm.To make camera lens reach under the conditions of " expanding with heat and contract with cold ", camera lens is without focus drifting phenomenon, that is, camera lens without thermalization.Wherein
The aspherical face type of 4th lens 7 meets equation:
,
Wherein: c is 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；
~Coefficient corresponding to each radial coordinate is respectively indicated, lens front and back two can accurately be set by the above parameter
A aspherical geomery.
5th lens 4 are the ultra-low dispersion glass lens with positive light coke, wherein Vd > 70, and eyeglass is biconvex lens,
Two auroral spectrum color difference are corrected, are conducive to improve resolving power.
6th lens 5 are the low dispersion double convex glass lens of positive light coke, wherein 50 < Vd < 70, the 7th lens 6 are negative
Focal power high refractive low dispersive glass spherical lens, eyeglass are negative meniscus, the 6th lens 5 and the glued use of the 7th lens 6, are risen
The effect of cemented doublet correction color difference and spherical aberration is arrived.The object side of 6th lens 5 is convex to image planes, can not only make rim ray
There is preferable collimation with chief ray, while also ensuring chief ray to the inclination angle of optical axis；The image side of 7th lens 6 is towards picture
Face is convex, and the field angle of optical system equally can be improved in this way, additionally it is possible to which the curvature of field of good correction system can be improved simultaneously
The resolution ratio of image plane center and edge.
Sensitive chip 11 is equipped with behind 7th lens 6, the sensitive chip is having a size of 1/2.5 ", resolution ratio can satisfy 500
The requirement of ten thousand pixels.It is also equipped with optical filter 9 and protection glass 10 simultaneously, can not only play a protective role to sensitive chip 11, together
When can filter veiling glare outside required wave band, to improve image quality.And the present invention has fully considered optical filter in design
9 and the introduced aberration of sensitive chip protection glass 10, and corrected in the design process, to improve the quality of camera lens.
Therefore while selecting suitable eyeglass material, scientific takes no thermalization flake high definition optical lens of the invention
Shape with lens, reasonably distributes focal power, mutually compensates each parameter of lens, effectively to solve camera lens in high temperature or low
Under warm environment, the decline of the resolution ratio due to caused by temperature change or focus drifting problem.Meanwhile the camera lens is also reduced red
With focus deviation existing under visible light conditions under the conditions of outer, infrared resolving power is improved.And the camera lens passes through high and low dispersion material
Material is used cooperatively, and corrects the second order spectrum as caused by infrared light well, optimizes axial chromatic aberration, so that camera lens is in white light and infrared
Under the conditions of light, it can be obtained in image planes clearly as to meet infrared confocal requirement.
Enumerated in the present embodiment a field angle be 65 °, resolution ratio be 4,000,000 pixels, mechanical overall length be 22.5mm within,
The actual design embodiment that can be worked normally in the environment of -40 DEG C ~+80 DEG C:
1 system data of table
2 asphericity coefficient of table~
In above-mentioned Tables 1 and 2:
What face number 1 and 2 respectively indicated is the first face and the second face of the first lens 1, and the material of the first lens 1 is H-
ZLAF55C；
What face number 3 and 4 respectively indicated is the first face and the second face of the second lens 2, and the material of the second lens 2 is H-
ZLAF55C；
What face number 5 and 6 respectively indicated is the first face and the second face of the third lens 3, and the material of the third lens 3 is H-ZF52A；
What face number 7 and 8 respectively indicated is the first face and the second face of the 4th lens 7, and the material of the 4th lens 7 is K26R；
What face number 10 and 11 respectively indicated is the first face and the second face of the 5th lens 4, and the material of the 5th lens 4 is
FCD515；
What face number 12 indicated is the first face of the 6th lens 5, and the material of the 6th lens 5 is H-LAF2；
What face number 13 indicated is the first face of the 7th lens 6, and the material of the 7th lens 6 is H-ZF62；
What face number 15 and 16 respectively indicated is the first face and the second face of optical filter 9, and the substrate material of optical filter 9 is H-K9L；
What face number 17 and 18 respectively indicated is the first face and the second face of sensitive chip protection glass 10, protects the base of glass 10
Bottom materials are 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, Fig. 3, figure 4 and figure 5 respectively show the spherical aberration curves of optical lens, field
Bent and distortion curve, chromatic curve and MTF curve, as seen from the figure,
Spherical aberration is remedied within ± 0.04mm, and spherical aberration correction is relatively good in spectral bandwidth, can increase camera lens real scene shooting picture in this way
The tidiness in face.Due to using aspherical lens, astigmatism and the curvature of field can be remedied to suitable range, so that the resolving power of meridian
It can be close with the resolving power in sagitta of arc direction.Chromatic longitudiinal aberration, with respect to chromatic longitudiinal aberration within 2 μm, g light hangs down axis for f light, d light, c light
Color difference can meet our camera lens solutions as quality requirements within 5 μm；MTF curve figure shows that the camera lens has excellent resolving power,
Within central vision and 0.7 visual field, the spatial frequency of 200cycles/mm has higher acutance.
Embodiment 2
Under normal circumstances, fish eye lens will form the cricoid veiling glare of light on periphery, and the present invention passes through this nothing of optical analog
The veiling glare phenomenon of thermalization flake high definition camera lens, specifically:
First rims of the lens plane by the reflection of incident light so that there is annular veiling glare in image planes, optical analysis figure as shown in fig. 6,
It will appear light when light source is by illustrated angle incidence to generate instead in first piece of eyeglass, second face (that face for being close to image planes)
Secondary reflection is carried out by eyeglass chamfering and plane after penetrating, then reflection light is most passed through afterwards by the progress triple reflection of eyeglass outer diameter
Second face for crossing first piece of eyeglass be refracted in chip image planes, forms annular veiling glare, specific to generate veiling glare position such as Fig. 7
It is shown, annular veiling glare can be generated at mark the first rims of the lens plane A in Fig. 7.
The treatment process that the present invention is directed to annular veiling glare caused by the reason is: being wiped using the painting of delustring ink and marks A in Fig. 7
Place applies wipe in two times, and black thickness reaches 0.02-0.03mm, and the eyeglass after inking is detected in painting ink-covered area using mobile phone light,
When seeking mobile phone light from the case of eyeglass≤1cm, eyeglass, which applies, is not present light transmission in ink-covered area, ends light reflection therefrom, thus
Reach veiling glare elimination.Wherein Fig. 8 is to be not coated with the fisheye image for wiping delustring ink, just be will appear when camera lens delustring is not in place
The phenomenon that Fig. 8, only veiling glare ring-type size might have difference, i.e. Fig. 8 this it appears that fish eye lens periphery have one it is bright
The aobvious veiling glare ring of light will affect the quality of imaging, and Fig. 9 is the fisheye image applied after wiping delustring ink, the comparison of Fig. 8, Fig. 9
This it appears that veiling glare disappears substantially.
The fish eye lens overwhelming majority in the market with this without thermalization flake high definition camera lens improve before, when illumination is low
When the veiling glare it is unobvious, when illumination reaches 210lux, fish eye lens annular veiling glare very serious phenomenon influences to be imaged
Quality, the optical analog of veiling glare through the invention and making up for technique (are shone so that the camera lens veiling glare substantially eliminates in environment
Spend under 210lux), greatly improve image quality, significant effect.
Finally, it is stated that the above examples are only used to illustrate the technical scheme of the present invention and are not limiting, this field is common
Other modifications or equivalent replacement that technical staff makes technical solution of the present invention, without departing from technical solution of the present invention
Spirit and scope, be intended to be within the scope of the claims of the invention.
Claims (6)
1. a kind of optical lens of no thermalization flake high definition, it is characterised in that: including being set gradually from object plane to image planes along optical axis
The first lens (1), the second lens (2), the third lens (3), the 4th lens (7), the 5th lens (4), the 6th lens (5),
Seven lens (6) and sensitive chip (11), wherein diaphragm (8) are set between the 4th lens (7) and the 5th lens (4), described first
Lens (1), the second lens (2), the third lens (3), the 5th lens (4), the 6th lens (5), the 7th lens (6) are glass spherical surface
Lens, the 4th lens (7) be plastic aspheric lenes, first lens (1), the second lens (2), the third lens (3),
4th lens (7), the 5th lens (4), the 6th lens (5), the 7th lens (6) focal length be successively negative, be negative, positive, just, just, just,
It is negative.
2. a kind of optical lens of no thermalization flake high definition according to claim 1, it is characterised in that: the 7th lens
(6) optical filter (9) and protection glass (10) are set gradually between sensitive chip (11).
3. a kind of optical lens of no thermalization flake high definition according to claim 1, it is characterised in that: the sensitive chip
(11) size is 1/2.5 ", resolution ratio is 5,000,000 pixels.
4. a kind of optical lens of no thermalization flake high definition according to claim 1, it is characterised in that: first lens
It (1) is negative meniscus lens, second lens (2) are biconcave lens, and the third lens (3) are biconvex lens, described the
Four lens (7) are biconvex lens, and the 5th lens (4) are biconvex lens, and the 6th lens (5) are biconvex lens, described
7th lens (6) are negative meniscus lens.
5. a kind of optical lens of no thermalization flake high definition according to claim 1, it is characterised in that: first lens
It (1) is high-refractivity and low-dispersion lens, second lens (2) are high-refractivity and low-dispersion lens, and the third lens (3) are
High refractive index lens, the 4th lens (7) are low dispersing lens, and the 5th lens (4) are ultra-low dispersion lens, described the
Six lens (5) are low dispersing lens, and the 7th lens (6) are high refractive low dispersive lens.
6. a kind of processing technology of the optical lens of no thermalization flake high definition described in claim 1, it is characterised in that: described the
Delustring ink is wiped in the painting of one lens (1) edge plane.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811155292.0A CN109116525B (en) | 2018-09-30 | 2018-09-30 | Athermal fisheye high-definition optical lens |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811155292.0A CN109116525B (en) | 2018-09-30 | 2018-09-30 | Athermal fisheye high-definition optical lens |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112083554A (en) * | 2020-09-17 | 2020-12-15 | 长光卫星技术有限公司 | Super wide angle low distortion long focus fish eye optical system |
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