CN107907976A - A kind of high pixel optics system - Google Patents

A kind of high pixel optics system Download PDF

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Publication number
CN107907976A
CN107907976A CN201711224235.9A CN201711224235A CN107907976A CN 107907976 A CN107907976 A CN 107907976A CN 201711224235 A CN201711224235 A CN 201711224235A CN 107907976 A CN107907976 A CN 107907976A
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China
Prior art keywords
lens
optical system
msup
conditional
focal length
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CN201711224235.9A
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Chinese (zh)
Inventor
吴刘森
陈艺敏
李栗河
于利国
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Suzhou Optical Polytron Technologies Inc
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Suzhou Optical Polytron Technologies Inc
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Priority to CN201711224235.9A priority Critical patent/CN107907976A/en
Publication of CN107907976A publication Critical patent/CN107907976A/en
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    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B1/00—Optical elements characterised by the material of which they are made; Optical coatings for optical elements
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B15/00—Optical objectives with means for varying the magnification
    • G02B15/14—Optical objectives with means for varying the magnification by axial movement of one or more lenses or groups of lenses relative to the image plane for continuously varying the equivalent focal length of the objective

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Lenses (AREA)

Abstract

This application discloses a kind of optical system of high pixel, the first lens group, aperture diaphragm, the second lens group and image planes are disposed with along optical axis direction from object plane side to image planes side, first lens group has negative power and position can be moved along optical axis direction, and second lens group has positive light coke and position can be moved along optical axis direction.A kind of optical system of high pixel of the application can realize pixel 12,000,000, most short focus focal length fW≤4mm；Most focal length focal length fT≥17.5mm；Most short focus aperture F#W≤1.4；Most focal length aperture F#T≥3.1；The system imaging face 1/1.8 " of most short optic back focal BFL of optical system overall length TTL≤90.5mm >=9.0, the system can be widely used in the very-high solution demand such as security protection, unmanned, unmanned plane, onboard system field.

Description

A kind of high pixel optics system
Technical field
This application involves a kind of optical system, more particularly to a kind of high pixel optics system.
Background technology
Optical image technology development face to face is maked rapid progress, from the VGA grades of ten thousand pixel of thirty or forty at the end of the nineties in last century, By the mega pixel of the beginning of this century, 100 pixel class before 5 or six years, then six mega pixels till now, even 4K and Eight mega pixel grades, it can be seen that its rule of development is continued to develop toward high end pixel；
On the other hand, chip technology highest is now generally up to ten million pixel；Either mobile phone industry, number Dan Fanhang Industry, vehicle-mounted industry or unmanned plane industry, high-end product are substantially imaging demand more than ten million pixel；And the row of security protection at present Industry, by its special product size and with demand, the camera lens product of few ten million pixel class matches its phase on the market The chip demand of more than 8,000,000 answered；It is still more zoom product that it is less, which to focus product,；
For above-mentioned consideration, the present invention specially designs a kind of optical system of very-high solution, should to meet pixel demand System has used current optical technically more advanced method：Aspheric surface technology in free form surface.
The content of the invention
It is an object of the invention to provide a kind of high pixel optics system, to overcome deficiency of the prior art.
To achieve the above object, the present invention provides following technical solution：
The embodiment of the present application discloses a kind of optical system of high pixel, along optical axis direction from object plane side to image planes one Side is disposed with the first lens group, aperture diaphragm, the second lens group and image planes, first lens group have negative power and Position can be moved along optical axis direction, and second lens group has positive light coke and position can be moved along optical axis direction； First lens group is made of the first to the 3rd lens, and second lens group is made of the 4th to the 11st lens；It is described First lens are platycelous negative lens, and second lens are double concave type negative lens, and the 3rd lens are curved month type positive lens, 4th lens are free optical surface positive lens and its surface is aspherical, and the 5th lens are biconvex positive lens, 6th lens are double concave type negative lens, and the 7th lens are biconvex positive lens, and the 8th lens are born for falcate Lens, the 9th lens are biconvex positive lens, and the tenth lens are double concave type negative lens, and the 11st lens are curved Month type positive lens.
Preferably, the optical system satisfies the following conditional expression：
【Conditional 1】
-14≤fFirst≤-12；
【Conditional 2】
16≤fSecond≤18；
Wherein：fFirstFor the focal length of the first lens group, fSecondFor the focal length of the second lens group.
Preferably, second lens and the 3rd lens form the first balsaming lens, the 6th lens and the 7th lens The second balsaming lens is formed, the 8th lens and the 9th lens form the 3rd balsaming lens；The optical system meets following Conditional：
【Conditional 3】
-110≤f1D≤-100；
【Conditional 4】
-100≤f2D≤-90；
【Conditional 5】
70≤f3D≤80；
【Conditional 6】
f1D≤f2D≤f3D；
Wherein：f1DFor the first balsaming lens focal length, f2DFor the second balsaming lens focal length, f3DFor the 3rd balsaming lens focal length.
Further, the optical interval of first lens and first balsaming lens is 8.05mm, and the described 4th is saturating The optical interval of mirror and the 5th lens is 0.13mm, and the optical interval of the 5th lens and the second balsaming lens is 0.13mm, The optical interval of second balsaming lens and the 3rd balsaming lens is 0.13mm, second balsaming lens and described The optical interval of ten lens is 0.22mm, and the optical interval of the tenth lens and the 11st lens is 0.24mm, described The spacing of first balsaming lens and the aperture diaphragm is more than or equal to 24mm and is less than or equal to 25mm, the aperture diaphragm with it is described The optical distance of 4th lens is more than or equal to 14mm and is less than or equal to 14.5mm.
Preferably, the 3rd lens, the 4th lens and the 9th lens are made of ultra-low dispersion glass material, and the described 9th Optics of lens Abbe number is more than 80；5th lens and the tenth lens are made of glass of high refractive index material；The optics System meets conditional：
【Conditional 7】
70≤Vd3=Vd4≤Vd9≤85；
【Conditional 8】
1.85≤Nd5=Nd10≤1.90；
Wherein：Vd3For the 3rd lens glass Abbe number；Vd4For the 4th lens glass Abbe number, Vd9For the 9th lens Glass Abbe number, Nd5Represent the 5th lens glass refractive index, Nd10Represent the tenth lens glass refractive index.
Preferably, the maximum perforate size of the aperture diaphragm immobilizes, its relative aperture (F#) meets conditional 9：
【Conditional 9】
F#=D/f；
Wherein：D is optics optical system Entry pupil diameters, and f is optical system focal length.
Preferably, the optical system meets conditional 10:
【Conditional 10】
2.0≤F#T/F#W≤2.5
Wherein：F#TFor optical system most focal length when corresponding relative aperture value, F#WFor optical system most short focus when it is corresponding Relative aperture value.
Preferably, the even aspheric surface coefficient of the 4th lens is up to even 12, the aspheric of the 4th lens Face coefficient meets conditional 10：
【Conditional 11】
Curvature on the basis of wherein C, K are conic coefficients；A1 is zero.
Preferably, the optical system meets conditional 12：
【Conditional 12】
0.2≤fW/fT≤0.3
Wherein fWFor optical system most short focus when corresponding optical focal length, fTFor optical system most focal length when corresponding optics Focal length.
Preferably, the optical system meets：
Wherein：F represents the optical focal length value of lens；R represents the benchmark curvature value on two surfaces of lens；Vd represents lens Abbe number value；Nd represents the light refractive index value of lens.
Compared with prior art, a kind of optical system of high pixel of the application can realize pixel 12,000,000, most short focus Focal length fW≤4mm；Most focal length focal length fT≥17.5mm；Most short focus aperture F#W≤1.4；Most focal length aperture F#T≥3.1；Optical system Unite the system imaging face 1/1.8 " of overall length TTL≤90.5mm most short optic back focal BFL >=9.0, the system can be widely used in security protection, The very-high solution demand such as unmanned, unmanned plane, onboard system field.
Brief description of the drawings
In order to illustrate the technical solutions in the embodiments of the present application or in the prior art more clearly, below will be to embodiment or existing There is attached drawing needed in technology description to be briefly described, it should be apparent that, drawings in the following description are only this Some embodiments described in application, for those of ordinary skill in the art, without creative efforts, Other attached drawings can also be obtained according to these attached drawings.
Fig. 1 is high pixel optics system short focus schematic diagram in the specific embodiment of the invention
Fig. 2 is high pixel optics system focal length schematic diagram in the specific embodiment of the invention
Fig. 3 is high pixel optics system short focus aberration schematic diagram in the specific embodiment of the invention
Fig. 4 is high pixel optics system focal length aberration schematic diagram in the specific embodiment of the invention
Fig. 5 is the high pixel optics system short focus curvature of field and distortion schematic diagram in the specific embodiment of the invention
Fig. 6 is the high pixel optics system focal length curvature of field and distortion schematic diagram in the specific embodiment of the invention
Embodiment
Below in conjunction with the attached drawing in the embodiment of the present invention, detailed retouch is carried out to the technical solution in the embodiment of the present invention State, it is clear that described embodiment is only part of the embodiment of the present invention, instead of all the embodiments.Based on the present invention In embodiment, the every other implementation that those of ordinary skill in the art are obtained on the premise of creative work is not made Example, belongs to the scope of protection of the invention.
A kind of optical system of high pixel, sets successively along optical axis direction from object plane side to image planes side with reference to shown in Fig. 1 The first lens group, aperture diaphragm 13, the second lens group and image planes 12 are equipped with, the first lens group has negative power and position can edge Optical axis direction movement, the second lens group has positive light coke and position can be moved along optical axis direction；First lens group by One 1 to the 3rd lens 3 form, and the second lens group is made of the 4th 4 to the 11st lens；First lens 1 are born for platycelous Lens, the second lens 2 are double concave type negative lens, and the 3rd lens 3 are curved month type positive lens, and the 4th lens 4 are free optical surface Positive lens and its surface are aspherical, and the 5th lens 5 are biconvex positive lens, and the 6th lens 6 are double concave type negative lens, and the 7th is saturating Mirror 7 is biconvex positive lens, and the 8th lens 8 are negative meniscus, and the 9th lens 9 are biconvex positive lens, the tenth lens 10 For double concave type negative lens, the 11st lens 11 are curved month type positive lens.
In the technical scheme, optical system uses even order coefficient aspheric surface technology；And material be not conventional plastic and It is the preferable optical glass material of temperature tolerance；Ordinary optical plastic cement material, such as E48R, OKP4, APL series material, it is reflected With temperature significant changes can occur for the optical parameter of the key such as rate, radius of curvature, thickness, therefore its heat resistance is relatively low；And glass Glass material then exactly makes up this shortcoming；Therefore this patent uses glass material non-spherical lens, may further ensure that optics Optimal focal plane will not be varied with temperature and changed
Preferably, optical system satisfies the following conditional expression：
【Conditional 1】
-14≤fFirst≤-12；
【Conditional 2】
16≤fSecond≤18；
Wherein：fFirstFor the focal length of the first lens group, fSecondFor the focal length of the second lens group.
Preferably, the second lens 2 and the 3rd lens 3 form the first balsaming lens, and the 6th lens 6 are formed with the 7th lens 7 Second balsaming lens, the 8th lens 8 and the 9th lens 9 form the 3rd balsaming lens；Optical system satisfies the following conditional expression：
【Conditional 3】
-110≤f1D≤-100；
【Conditional 4】
-100≤f2D≤-90；
【Conditional 5】
70≤f3D≤80；
【Conditional 6】
f1D≤f2D≤f3D；
Wherein：f1DFor the first balsaming lens focal length, f2DFor the second balsaming lens focal length, f3DFor the 3rd balsaming lens focal length.
Further, the optical interval of the first lens 1 and the first balsaming lens is 8.05mm, and the 4th lens 7 and the 5th are saturating The optical interval of mirror 5 is 0.13mm, and the optical interval of the 5th lens 5 and the second balsaming lens is 0.13mm, the second balsaming lens Optical interval with the 3rd balsaming lens is 0.13mm, and the optical interval of the second balsaming lens and the tenth lens 10 is 0.22mm, The optical interval of tenth lens 10 and the 11st lens 11 is 0.24mm, and the spacing of the first balsaming lens and aperture diaphragm 13 is more than Equal to 24mm and it is less than or equal to 25mm, the optical distance of aperture diaphragm 13 and the 4th lens 4 is more than or equal to 14mm and is less than or equal to 14.5mm。
Preferably, the 3rd lens 3, the 4th lens 4 and the 9th lens 9 are made of ultra-low dispersion glass material, the 9th lens 9 Optics Abbe number is more than 80；5th lens 5 and the tenth lens 10 are made of glass of high refractive index material；Optical system meets one Lower conditional：
【Conditional 7】
70≤Vd3=Vd4≤Vd9≤85；
【Conditional 8】
1.85≤Nd5=Nd10≤1.90；
Wherein：Vd3For the 3rd lens glass Abbe number；Vd4For the 4th lens glass Abbe number, Vd9For the 9th lens Glass Abbe number, Nd5Represent the 5th lens glass refractive index, Nd10Represent the tenth lens glass refractive index.
Preferably, the maximum perforate size of aperture diaphragm 13 immobilizes, its relative aperture (F#) meets conditional 9：
【Conditional 9】
F#=D/f；
Wherein：D is optics optical system Entry pupil diameters, and f is optical system focal length.
Preferably, optical system meets conditional 10:
【Conditional 10】
2.0≤F#T/F#W≤2.5
Wherein：F#TFor optical system most focal length when corresponding relative aperture value, F#WFor optical system most short focus when it is corresponding Relative aperture value.
Preferably, the even aspheric surface coefficient of the 4th lens 4 is up to even 12, the asphericity coefficient of the 4th lens 4 Meet conditional 10：
【Conditional 11】
The even aspheric surface coefficient highest even item number of 4th lens 4 is 12, therefore a7, a8 are 0.
Preferably, optical system meets conditional 12：
【Conditional 12】
0.2≤fW/fT≤0.3
Wherein fWFor optical system most short focus when corresponding optical focal length, fTFor optical system most focal length when corresponding optics Focal length.
In the technical scheme, by the movement between the first lens group and the second lens group, system focal length is realized Change；And in order to ensure the clarity of the imaging and focusing in zooming procedure, it is opposite between the first lens group and the second lens group Position is proper one-to-one relationship.
Preferably, optical system meets：
Wherein：F represents the optical focal length value of lens；R represents the benchmark curvature value on two surfaces of lens；Vd represents lens Abbe number value；Nd represents the light refractive index value of lens.
Fig. 3, Fig. 3, Fig. 4, Fig. 5 and Fig. 6 show high pixel optics system focal length and short focus in the specific embodiment of the invention Aberration schematic diagram, the glue curvature of field and distortion schematic diagram are intended to
In conclusion a kind of optical system of high pixel of the application can realize pixel 12,000,000, most short focus focal length fW ≤4mm；Most focal length focal length fT≥17.5mm；Most short focus aperture F#W≤1.4；Most focal length aperture F#T≥3.1；Optical system overall length The system imaging face 1/1.8 " of most short optic back focal BFL of TTL≤90.5mm >=9.0, which can be widely used in security protection, nobody drives Sail, the very-high solution demand field such as unmanned plane, onboard system.
It should be noted that herein, relational terms such as first and second and the like are used merely to a reality Body or operation are distinguished with another entity or operation, are deposited without necessarily requiring or implying between these entities or operation In any this actual relation or order.Moreover, term " comprising ", "comprising" or its any other variant are intended to Non-exclusive inclusion, so that process, method, article or equipment including a series of elements not only will including those Element, but also including other elements that are not explicitly listed, or further include as this process, method, article or equipment Intrinsic key element.In the absence of more restrictions, the key element limited by sentence "including a ...", it is not excluded that Also there are other identical element in process, method, article or equipment including the key element.
The above is only the embodiment of the application, it is noted that for the ordinary skill people of the art For member, on the premise of the application principle is not departed from, some improvements and modifications can also be made, these improvements and modifications also should It is considered as the protection domain of the application.

Claims (10)

  1. A kind of 1. optical system of high pixel, it is characterised in that：Set gradually along optical axis direction from object plane side to image planes side There are the first lens group, aperture diaphragm, the second lens group and an image planes, first lens group has negative power and position can be along Optical axis direction moves, and second lens group has positive light coke and position can be moved along optical axis direction；Described first is saturating Microscope group is made of the first to the 3rd lens, and second lens group is made of the 4th to the 11st lens；First lens are Platycelous negative lens, second lens are double concave type negative lens, and the 3rd lens are curved month type positive lens, and the described 4th is saturating Mirror is free optical surface positive lens and its surface is aspherical, and the 5th lens are biconvex positive lens, and the described 6th is saturating Mirror is double concave type negative lens, and the 7th lens are biconvex positive lens, and the 8th lens are negative meniscus, described Nine lens are biconvex positive lens, and the tenth lens are double concave type negative lens, and the 11st lens are curved month type positive lens.
  2. A kind of 2. optical system of high pixel according to claim 1, it is characterised in that：The optical system meets following Conditional：
    【Conditional 1】
    -14≤fFirst≤-12；
    【Conditional 2】
    16≤fSecond≤18；
    Wherein：fFirstFor the focal length of the first lens group, fSecondFor the focal length of the second lens group.
  3. A kind of 3. optical system of high pixel according to claims 1, it is characterised in that：Second lens and Three lens form the first balsaming lens, and the 6th lens and the 7th lens form the second balsaming lens, the 8th lens and 9th lens form the 3rd balsaming lens；The optical system satisfies the following conditional expression：
    【Conditional 3】
    -110≤f1D≤-100；
    【Conditional 4】
    -100≤f2D≤-90；
    【Conditional 5】
    70≤f3D≤80；
    【Conditional 6】
    f1D≤f2D≤f3D；
    Wherein：f1DFor the first balsaming lens focal length, f2DFor the second balsaming lens focal length, f3DFor the 3rd balsaming lens focal length.
  4. A kind of 4. optical system of high pixel according to claim 3, it is characterised in that：First lens and described the The optical interval of one balsaming lens is 8.05mm, and the optical interval of the 4th lens and the 5th lens is 0.13mm, described The optical interval of five lens and the second balsaming lens is the light of 0.13mm, second balsaming lens and the 3rd balsaming lens Spacing is 0.13mm, and the optical interval of second balsaming lens and the tenth lens is 0.22mm, the tenth lens Optical interval with the 11st lens is 0.24mm, and the spacing of first balsaming lens and the aperture diaphragm is more than etc. In 24mm and be less than or equal to 25mm, the optical distances of the aperture diaphragm and the 4th lens be more than or equal to 14mm and less than etc. In 14.5mm.
  5. A kind of 5. optical system of high pixel according to claims 1, it is characterised in that：3rd lens, Four lens and the 9th lens are made of ultra-low dispersion glass material, and the 9th optics of lens Abbe number is more than 80；Described Five lens and the tenth lens are made of glass of high refractive index material；The optical system meets conditional：
    【Conditional 7】
    70≤Vd3=Vd4≤Vd9≤85；
    【Conditional 8】
    1.85≤Nd5=Nd10≤1.90；
    Wherein：Vd3For the 3rd lens glass Abbe number；Vd4For the 4th lens glass Abbe number, Vd9For the 9th lens glass Abbe number, Nd5Represent the 5th lens glass refractive index, Nd10Represent the tenth lens glass refractive index.
  6. A kind of 6. optical system of high pixel according to claims 1, it is characterised in that：The aperture diaphragm is most Large opening size immobilizes, its relative aperture (F#) meets conditional 9：
    【Conditional 9】
    F#=D/f；
    Wherein：D is optics optical system Entry pupil diameters, and f is optical system focal length.
  7. A kind of 7. optical system of high pixel according to claims 5, it is characterised in that：The optical system meets Conditional 10:
    【Conditional 10】
    2.0≤F#T/F#W≤2.5
    Wherein：F#TFor optical system most focal length when corresponding relative aperture value, F#WFor optical system most short focus when it is corresponding opposite Aperture value.
  8. A kind of 8. optical system of high pixel according to claims 1, it is characterised in that：The idol of 4th lens Secondary asphericity coefficient is up to even 12, and the asphericity coefficient of the 4th lens meets conditional 10：
    【Conditional 11】
    <mrow> <mi>Z</mi> <mo>=</mo> <mfrac> <mrow> <msup> <mi>cr</mi> <mn>2</mn> </msup> </mrow> <mrow> <mn>1</mn> <mo>+</mo> <msqrt> <mrow> <mn>1</mn> <mo>-</mo> <mrow> <mo>(</mo> <mn>1</mn> <mo>+</mo> <mi>k</mi> <mo>)</mo> </mrow> <msup> <mi>c</mi> <mn>2</mn> </msup> <msup> <mi>r</mi> <mn>2</mn> </msup> </mrow> </msqrt> </mrow> </mfrac> <mo>+</mo> <msub> <mi>a</mi> <mn>1</mn> </msub> <msup> <mi>r</mi> <mn>2</mn> </msup> <mo>+</mo> <msub> <mi>a</mi> <mn>2</mn> </msub> <msup> <mi>r</mi> <mn>4</mn> </msup> <mo>+</mo> <msub> <mi>a</mi> <mn>3</mn> </msub> <msup> <mi>r</mi> <mn>6</mn> </msup> <mo>+</mo> <msub> <mi>a</mi> <mn>4</mn> </msub> <msup> <mi>r</mi> <mn>8</mn> </msup> <mo>+</mo> <msub> <mi>a</mi> <mn>5</mn> </msub> <msup> <mi>r</mi> <mn>10</mn> </msup> <mo>+</mo> <msub> <mi>a</mi> <mn>6</mn> </msub> <msup> <mi>r</mi> <mn>12</mn> </msup> <mo>+</mo> <msub> <mi>a</mi> <mn>7</mn> </msub> <msup> <mi>r</mi> <mn>14</mn> </msup> <mo>+</mo> <msub> <mi>a</mi> <mn>8</mn> </msub> <msup> <mi>r</mi> <mn>16</mn> </msup> </mrow>
    Curvature on the basis of wherein C, K are conic coefficients；A1 is zero.
  9. A kind of 9. optical system of high pixel according to claims 1, it is characterised in that：The optical system meets Conditional 12：
    【Conditional 12】
    0.2≤fW/fT≤0.3
    Wherein fWFor optical system most short focus when corresponding optical focal length, fTFor optical system most focal length when corresponding optical focal length.
  10. A kind of 10. optical system of high pixel according to right will go 1, it is characterised in that：The optical system meets：
    Wherein：F represents the optical focal length value of lens；R represents the benchmark curvature value on two surfaces of lens；Vd represents the Abbe of lens Coefficient value；Nd represents the light refractive index value of lens.
CN201711224235.9A 2017-11-29 2017-11-29 A kind of high pixel optics system Pending CN107907976A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
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Application Number Priority Date Filing Date Title
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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108897132A (en) * 2018-07-23 2018-11-27 福建福光股份有限公司 A kind of 20mm machine vision optical system
US10831002B1 (en) 2019-11-27 2020-11-10 Guangdong Sirui Optical Co., Ltd. Large aperture anamorphic lens
WO2021103247A1 (en) * 2019-11-27 2021-06-03 广东思锐光学股份有限公司 Large-aperture anamorphic lens
TWI761625B (en) * 2018-05-31 2022-04-21 光芒光學股份有限公司 Lens and fabrication method thereof

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TWI761625B (en) * 2018-05-31 2022-04-21 光芒光學股份有限公司 Lens and fabrication method thereof
CN108897132A (en) * 2018-07-23 2018-11-27 福建福光股份有限公司 A kind of 20mm machine vision optical system
CN108897132B (en) * 2018-07-23 2020-12-22 福建福光股份有限公司 20mm machine vision optical system
US10831002B1 (en) 2019-11-27 2020-11-10 Guangdong Sirui Optical Co., Ltd. Large aperture anamorphic lens
WO2021103247A1 (en) * 2019-11-27 2021-06-03 广东思锐光学股份有限公司 Large-aperture anamorphic lens

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