CN205581391U - Long burnt infrared optical system of catadioptric off -axis - Google Patents
Long burnt infrared optical system of catadioptric off -axis Download PDFInfo
- Publication number
- CN205581391U CN205581391U CN201620201342.4U CN201620201342U CN205581391U CN 205581391 U CN205581391 U CN 205581391U CN 201620201342 U CN201620201342 U CN 201620201342U CN 205581391 U CN205581391 U CN 205581391U
- Authority
- CN
- China
- Prior art keywords
- lens
- thing side
- reflection
- curvature
- radius
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 230000003287 optical effect Effects 0.000 title claims abstract description 50
- 239000000463 material Substances 0.000 claims abstract description 20
- 238000013461 design Methods 0.000 claims abstract description 10
- 230000005499 meniscus Effects 0.000 claims description 9
- 238000005452 bending Methods 0.000 claims description 8
- 229910052732 germanium Inorganic materials 0.000 claims description 8
- GNPVGFCGXDBREM-UHFFFAOYSA-N germanium atom Chemical compound [Ge] GNPVGFCGXDBREM-UHFFFAOYSA-N 0.000 claims description 8
- 229910052710 silicon Inorganic materials 0.000 claims description 7
- 239000010703 silicon Substances 0.000 claims description 7
- 238000002347 injection Methods 0.000 claims description 2
- 239000007924 injection Substances 0.000 claims description 2
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 claims 1
- 229910021421 monocrystalline silicon Inorganic materials 0.000 claims 1
- 238000009738 saturating Methods 0.000 claims 1
- 238000003384 imaging method Methods 0.000 abstract description 6
- 230000008901 benefit Effects 0.000 abstract description 4
- 230000000007 visual effect Effects 0.000 abstract description 4
- 230000005540 biological transmission Effects 0.000 abstract description 2
- 239000004429 Calibre Substances 0.000 abstract 1
- 238000005057 refrigeration Methods 0.000 description 4
- 230000004075 alteration Effects 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 230000018109 developmental process Effects 0.000 description 2
- 238000005286 illumination Methods 0.000 description 2
- 230000011514 reflex Effects 0.000 description 2
- 238000001228 spectrum Methods 0.000 description 2
- 238000012546 transfer Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 230000003044 adaptive effect Effects 0.000 description 1
- 230000004323 axial length Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000004939 coking Methods 0.000 description 1
- 238000012937 correction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000007747 plating Methods 0.000 description 1
- 239000010453 quartz Substances 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
Landscapes
- Lenses (AREA)
Abstract
The utility model relates to a long burnt infrared optical system of catadioptric off -axis, including the refraction branch system that reflects the branch system and form by a plurality of lens, the incident beam warp jet into after the reflection of reflection branch system in the refraction branch system, the reflection divides a system to comprise five speculums, and these five speculum off -axiss set up, and the light that jets out from the object space is kicked into after the reflection of first speculum, the second mirror, third speculum, fourth speculum and the 5th speculum in the branch system that reflects in proper order. Combination through the reflection divides system and refraction to divide the system makes it possess catoptric system simultaneously and can do not produce the colour difference in very wide working wavelength range to reach the advantage that dioptric system realized the design of the big angle of vision more easily. This system has long -focus, compact structure, the big advantage in visual field, has solved because the restriction of infrared transmission material size makes infrared system can not realize the problem of long -focus, heavy -calibre, but wide application in photoelectronic imaging fields such as aviation scouting.
Description
Technical field
This utility model relates to a kind of refraction-reflection off-axis focal length infrared optical system.
Background technology
High altitude surveillance is high-effect and the high-tech reconnaissance means that do not limited by territory, the ability that it has target acquisition, identifies and analyze.It is the action that army takes to obtain enemy's situation information, topographic features and relevant combat intelligence, is being effectively ensured of operation triumph, and development high altitude surveillance is for obtaining the military information of modernization, and safeguard one's country safety, it is ensured that war victory has important effect.
In space optics field, in order to improve the definition to target observations, needing to improve further the ground resolution of camera, this is accomplished by optical system and has longer focal length and more heavy caliber.Pure refraction type focal length infrared system affects the image quality of system due to the existence of second order spectrum, and owing to scantling limits, achieved system focal is limited, thus limits the development of refraction type focal length system.
Utility model content
The purpose of this utility model is to provide a kind of refraction-reflection off-axis focal length infrared optical system.
For achieving the above object, scheme of the present utility model includes a kind of refraction-reflection off-axis focal length infrared optical system, including reflecting subsystem and the refraction subsystem being made up of several lens, incident ray is injected in described refraction subsystem after the reflection of described reflection subsystem；Described reflection subsystem is made up of five reflecting mirrors, these five reflecting mirror located off-axis, are injected into described refraction subsystem successively from the light of thing side's injection after the reflection of the first reflecting mirror, the second reflecting mirror, the 3rd reflecting mirror, the 4th reflecting mirror and the 5th reflecting mirror；Described first reflecting mirror is the parabolic mirror bending towards thing side, described second reflecting mirror is the parabolic mirror of convex surface thing side dorsad, described 3rd reflecting mirror is the plane mirror of placement at 45 ° with optical axis, described 4th reflecting mirror is to become 0 ° of plane mirror placed with optical axis, and described 5th reflecting mirror is the plane mirror of placement at 45 ° with optical axis.
Described refraction subsystem includes the first lens, the second lens, the 3rd lens, the 4th lens, the 5th lens, the 6th lens, the 7th lens and the 8th lens set gradually along optical axis.
The design parameter of described infrared optical system is: wave band is 3.7 μm～4.8 μm, and focal length is 2000mm.
The surface of the close thing side of described 7th lens is aspheric surface.
It is provided with diaphragm on the emitting light path of described 8th lens；Described first lens are the falcate plus lens convex surface facing thing side, described second lens are the negative meniscus convex surface facing thing side, described 3rd lens are the negative meniscus convex surface facing thing side, described 4th lens are the falcate plus lens convex surface facing thing side, described 5th lens are the falcate plus lens bending towards described diaphragm, described 6th lens are the negative meniscus of the most described diaphragm, described 7th lens are the falcate plus lens of the most described diaphragm, and described 8th lens are the falcate plus lens bending towards described diaphragm.
The material of described first lens is monocrystal silicon, the material of described second lens is monocrystalline germanium, the material of described 3rd lens is monocrystalline germanium, the material of described 4th lens is monocrystal silicon, the material of described 5th lens is monocrystal silicon, the material of described 6th lens is monocrystalline germanium, and the material of described 7th lens is monocrystalline germanium, and the material of described 8th lens is monocrystal silicon.
The paraboloidal radius of curvature of described first reflecting mirror is-1400.60mm, the paraboloidal radius of curvature of described second reflecting mirror is 399.39mm, described first lens radius of curvature near the surface of thing side is-306.67mm, and described first lens are-541.48mm away from the radius of curvature on the surface of thing side；Described second lens radius of curvature near the surface of thing side is-2139.07mm, and described second lens are-619.32mm away from the radius of curvature on the surface of thing side；Described 3rd lens are 235.54mm away from the radius of curvature on the surface of thing side；The radius of curvature on the surface of the close thing side of described 4th lens is 241.80mm, and described 4th lens are 824.45mm away from the radius of curvature on the surface of thing side；The radius of curvature on the surface of the close thing side of described 5th lens is 83.97mm, and described 5th lens are 109.55mm away from the radius of curvature on the surface of thing side；The radius of curvature on the surface of the close thing side of described 6th lens is-36.42mm, and described 6th lens are-91.21mm away from the radius of curvature on the surface of thing side；The radius of curvature on the surface of the close thing side of described 7th lens is-54.18mm, and described 7th lens are-32.32mm away from the radius of curvature on the surface of thing side；The radius of curvature on the surface of the close thing side of described 8th lens is 24.37mm, and described 8th lens are 35.70mm away from the radius of curvature on the surface of thing side.
It is provided with the 6th reflecting mirror in light path between described 4th lens and the 5th lens.
Described first aperture of a mirror is 270mm, and the second aperture of a mirror is 75mm, and the 3rd aperture of a mirror is 90mm, and the 4th aperture of a mirror is 75mm, and the 5th aperture of a mirror is 110mm.
In the infrared optical system that this utility model provides, reflex system is used in the front end of optical system, the imaging light of thing side is introduced in follow-up dioptric system, by reflection subsystem and the combination of refraction subsystem, make it be provided simultaneously with reflex system and can not produce aberration in the widest service band, and dioptric system is easier to realize the advantage that the big angle of visual field designs.This refraction-reflection infrared system has the advantage that long-focus, compact conformation, visual field are big, solve owing to the restriction of infrared transmission material size makes infrared system can not realize long-focus, bigbore problem, can be widely applied to the photoelectronic imaging fields such as aerial reconnaissance.
And, reflection subsystem in system front end includes five reflecting mirrors, it is made to undertake most of focal power of optical system by the setting of these five reflecting mirrors, the long coking of the system that is advantageously implemented, second order spectrum impact can be prevented effectively from simultaneously, ensure image quality, improve the resolution of optical system.By different reflecting mirrors by light path folding and design form, by the repeatedly folding of light path, the light path of optical system can be effectively increased.Therefore, the length of optical system can reach the half of focal length, thus shorten system length, reduce volume.Follow-up refraction subsystem is substantially carried out aberration correction and visual field increases, and, can effectively eliminate the variations in temperature impact on system imaging quality by the refraction subsystem of rear end, it is achieved without thermalized design.
It addition, five reflecting mirrors are designed off axis so that system does not exist central obscuration, improves sensitivity.Further, system without blocking, can increase the luminous flux of system to incident illumination, improves image illumination uniformity.
Accompanying drawing explanation
Fig. 1 is the structural representation of refraction-reflection off-axis focal length infrared optical system；
Fig. 2 is the enlarged drawing of the a-quadrant in Fig. 1；
Fig. 3 is the modulation transfer function (MTF) curve chart of this optical system；
Fig. 4 is the point range figure of this optical system；
Fig. 5 is the curvature of field distortion figure of this optical system.
Detailed description of the invention
The utility model is described in more detail below in conjunction with the accompanying drawings.
The refraction-reflection off-axis focal length infrared optical system that this utility model provides includes reflecting subsystem and refraction subsystem, and incident ray is injected into refraction subsystem after being reflected the reflection of subsystem.
As shown in Figure 1, reflection subsystem is made up of five reflecting mirrors, these five reflecting mirror located off-axis, and arrange that these five reflecting mirrors need to meet: incident ray is injected in refraction subsystem successively after the reflection of the first reflecting mirror, the second reflecting mirror, the 3rd reflecting mirror, the 4th reflecting mirror and the 5th reflecting mirror.Wherein, the first reflecting mirror is principal reflection mirror 1, and the second reflecting mirror is secondary mirror 2, and the 3rd reflecting mirror is folding mirror 3, and the 4th reflecting mirror is folding mirror 4, and the 5th reflecting mirror is folding mirror 5.And, principal reflection mirror 1 and secondary mirror 2 are paraboloidal mirror, and folding mirror 3, folding mirror 4 and folding mirror 5 are plane mirror.The front end off axis reflector part being made up of these five reflecting mirrors is a telescopic system, and its enlargement ratio is 4×.Specifically, these five reflecting mirrors are respectively as follows: has the folding mirror 3 of parabola secondary mirror 2 placement at 45 ° with optical axis bending towards the parabola principal reflection mirror 1 of thing side, convex surface thing side dorsad to become 0 ° of folding mirror placed 4 and the folding mirror 5 of optical axis placement at 45 ° with optical axis successively along the light direction of propagation.
In the present embodiment, mirror substrate material uses quartz material, reflecting surface plating highly reflecting films, the bore of principal reflection mirror 1 is 270mm, and the bore of secondary mirror 2 is 75mm, and the bore of folding mirror 3 is 90mm, the bore of folding mirror 4 is 75mm, and the bore of folding mirror 5 is 110mm.
The design parameter of this infrared optical system is: wave band is 3.7 μm～4.8 μm, and focal length is 2000mm, and full filed is 0.34 °.At present, the F number of the refrigeration detector of domestic use has 2 and 4 two kind, and self is all with cold stop, and this infrared optical system uses the refrigeration detector that F number is 4 that reality application is more；And, the detector of this optical system adaptation is pixel number 640 × 512, pixel dimension 15 μm or pixel number 320 × 256, the medium wave refrigeration detector of pixel dimension 30 μm.
As depicted in figs. 1 and 2, refraction subsystem includes the first lens, the second lens, the 3rd lens, the 4th lens, the 5th lens, the 6th lens, the 7th lens, the 8th lens and the diaphragm ST set gradually along optical axis (i.e. paths direction).Wherein, first lens are the falcate plus lens 6 convex surface facing thing side, second lens are the negative meniscus 7 convex surface facing thing side, 3rd lens are the negative meniscus 8 convex surface facing thing side, 4th lens are the falcate plus lens 9 convex surface facing thing side, 5th lens are the falcate plus lens 11 bending towards diaphragm ST, 6th lens are the negative meniscus 12 of diaphragm ST dorsad, 7th lens are the falcate plus lens 13 of diaphragm ST dorsad, and the 8th lens are the falcate plus lens 14 bending towards diaphragm ST.
The surface (i.e. front surface) of the close thing side of lens 13 is aspheric surface, and this aspheric surface uses the Asphere face type in CODE V software, and equation is:
Wherein c is curvature, and r is the axial radial coordinate of vertical light, and k is conic constant, A be quadravalence asphericity coefficient, B six rank asphericity coefficient, C be eight rank asphericity coefficients, D be ten rank asphericity coefficients.
It addition, for the axial length shortening this optical system, the light path between lens 9 and lens 11 is provided with reflecting mirror 10, this light direction of propagation can be changed by this reflecting mirror 10.
Table 1 gives one group of design parameter of this optical system.
Table 1
As shown in Figure 3, this optical system is 640 × 512 with adaptive resolution, Pixel size is space rate respectively that the medium-wave infrared refrigeration detector of 15 μm is corresponding when being 33lp/mm, and ssystem transfer function minimum is more than 0.3, close to diffraction limit, show that optical system imaging is excellent, meet requirement.As shown in Figure 4, the disc of confusion diameter of optical system is less than infrared detector pixel size, meets design requirement.As it is shown in figure 5, the distortion of this optical system is less than 1.5%, show that system imaging is excellent.
It is presented above specific embodiment, but this utility model is not limited to described embodiment.Basic ideas of the present utility model are above-mentioned basic scheme, for those of ordinary skill in the art, according to teaching of the present utility model, design the model of various deformation, formula, parameter are not required to spend creative work.The change that in the case of without departing from principle of the present utility model and spirit, embodiment carried out, revise, replace and modification still falls within protection domain of the present utility model.
Claims (9)
1. a refraction-reflection off-axis focal length infrared optical system, it is characterised in that include reflecting subsystem
With the refraction subsystem being made up of several lens, incident ray is injected after the reflection of described reflection subsystem
In described refraction subsystem；Described reflection subsystem is made up of five reflecting mirrors, and these five reflecting mirrors are off-axis
Arrange, from thing side injection light successively through the first reflecting mirror, the second reflecting mirror, the 3rd reflecting mirror, the 4th
It is injected in described refraction subsystem after the reflection of reflecting mirror and the 5th reflecting mirror；Described first reflecting mirror is curved
To the parabolic mirror of thing side, described second reflecting mirror is the parabolic mirror of convex surface thing side dorsad, institute
Stating the plane mirror that the 3rd reflecting mirror is placement at 45 ° with optical axis, described 4th reflecting mirror is to become with optical axis
0 ° of plane mirror placed, described 5th reflecting mirror is the plane mirror of placement at 45 ° with optical axis.
Refraction-reflection the most according to claim 1 off-axis focal length infrared optical system, it is characterised in that
The first lens that described refraction subsystem includes setting gradually along optical axis, the second lens, the 3rd lens, the 4th
Lens, the 5th lens, the 6th lens, the 7th lens and the 8th lens.
Refraction-reflection the most according to claim 1 off-axis focal length infrared optical system, it is characterised in that
The design parameter of described infrared optical system is: wave band is 3.7 μm～4.8 μm, and focal length is 2000mm.
Refraction-reflection the most according to claim 2 off-axis focal length infrared optical system, it is characterised in that
The surface of the close thing side of described 7th lens is aspheric surface.
Refraction-reflection the most according to claim 2 off-axis focal length infrared optical system, it is characterised in that
It is provided with diaphragm on the emitting light path of described 8th lens；Described first lens are the bent moon convex surface facing thing side
Shape plus lens, described second lens are the negative meniscus convex surface facing thing side, and described 3rd lens are convex
Facing to the negative meniscus of thing side, described 4th lens are the falcate plus lens convex surface facing thing side,
Described 5th lens are the falcate plus lens bending towards described diaphragm, and described 6th lens are the most described diaphragm
Negative meniscus, described 7th lens are the falcate plus lens of the most described diaphragm, described 8th saturating
Mirror is the falcate plus lens bending towards described diaphragm.
Refraction-reflection the most according to claim 2 off-axis focal length infrared optical system, it is characterised in that
The material of described first lens is monocrystal silicon, and the material of described second lens is monocrystalline germanium, described 3rd lens
Material be monocrystalline germanium, the material of described 4th lens is monocrystal silicon, and the material of described 5th lens is monocrystalline
Silicon, the material of described 6th lens is monocrystalline germanium, and the material of described 7th lens is monocrystalline germanium, the described 8th
The material of lens is monocrystal silicon.
Refraction-reflection the most according to claim 2 off-axis focal length infrared optical system, it is characterised in that
The paraboloidal radius of curvature of described first reflecting mirror is-1400.60mm, the parabola of described second reflecting mirror
Radius of curvature be 399.39mm, described first lens radius of curvature near the surface of thing side is
-306.67mm, described first lens are-541.48mm away from the radius of curvature on the surface of thing side；Described second
The lens radius of curvature near the surface of thing side is-2139.07mm, and described second lens are away from the surface of thing side
Radius of curvature be-619.32mm；Described 3rd lens away from the radius of curvature on the surface of thing side are
235.54mm；The radius of curvature on the surface of the close thing side of described 4th lens is 241.80mm, described
Four lens are 824.45mm away from the radius of curvature on the surface of thing side；The close thing side of described 5th lens
The radius of curvature on surface is 83.97mm, and described 5th lens away from the radius of curvature on the surface of thing side are
109.55mm；The radius of curvature on the surface of the close thing side of described 6th lens is-36.42mm, described
Six lens are-91.21mm away from the radius of curvature on the surface of thing side；The table of the close thing side of described 7th lens
The radius of curvature in face is-54.18mm, and described 7th lens away from the radius of curvature on the surface of thing side are
-32.32mm；The radius of curvature on the surface of the close thing side of described 8th lens is 24.37mm, the described 8th
Lens are 35.70mm away from the radius of curvature on the surface of thing side.
Refraction-reflection the most according to claim 2 off-axis focal length infrared optical system, it is characterised in that
It is provided with the 6th reflecting mirror in light path between described 4th lens and the 5th lens.
Refraction-reflection the most according to claim 1 off-axis focal length infrared optical system, it is characterised in that
Described first aperture of a mirror is 270mm, and the second aperture of a mirror is 75mm, the 3rd reflecting mirror
Bore is 90mm, and the 4th aperture of a mirror is 75mm, and the 5th aperture of a mirror is 110mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620201342.4U CN205581391U (en) | 2016-03-16 | 2016-03-16 | Long burnt infrared optical system of catadioptric off -axis |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620201342.4U CN205581391U (en) | 2016-03-16 | 2016-03-16 | Long burnt infrared optical system of catadioptric off -axis |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205581391U true CN205581391U (en) | 2016-09-14 |
Family
ID=56869451
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620201342.4U Expired - Fee Related CN205581391U (en) | 2016-03-16 | 2016-03-16 | Long burnt infrared optical system of catadioptric off -axis |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205581391U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106646839A (en) * | 2017-01-24 | 2017-05-10 | 中国科学院西安光学精密机械研究所 | Deep ultraviolet spectrum off-axis four-reflector optical imaging system |
| CN107505692A (en) * | 2017-09-26 | 2017-12-22 | 张家港中贺自动化科技有限公司 | A kind of catadioptric objective |
| CN108267850A (en) * | 2018-03-13 | 2018-07-10 | 吉林工程技术师范学院 | A kind of reflective optical system and method for reflection |
| CN109283671A (en) * | 2018-11-09 | 2019-01-29 | 中国科学院长春光学精密机械与物理研究所 | A light, small, large field of view and low distortion quasi-coaxial five-mirror optical system |
| CN112230409A (en) * | 2020-09-28 | 2021-01-15 | 北京空间机电研究所 | High-efficiency visible-infrared co-aperture off-axis optical system |
| CN112305739A (en) * | 2020-11-23 | 2021-02-02 | 湖北久之洋红外系统股份有限公司 | Common-path wide-narrow-view-field combined infrared dual-waveband imaging optical system |
-
2016
- 2016-03-16 CN CN201620201342.4U patent/CN205581391U/en not_active Expired - Fee Related
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106646839A (en) * | 2017-01-24 | 2017-05-10 | 中国科学院西安光学精密机械研究所 | Deep ultraviolet spectrum off-axis four-reflector optical imaging system |
| CN106646839B (en) * | 2017-01-24 | 2022-08-05 | 中国科学院西安光学精密机械研究所 | Deep ultraviolet spectrum off-axis four-reflector optical imaging system |
| CN107505692A (en) * | 2017-09-26 | 2017-12-22 | 张家港中贺自动化科技有限公司 | A kind of catadioptric objective |
| CN107505692B (en) * | 2017-09-26 | 2020-04-10 | 张家港中贺自动化科技有限公司 | Catadioptric objective lens |
| CN108267850A (en) * | 2018-03-13 | 2018-07-10 | 吉林工程技术师范学院 | A kind of reflective optical system and method for reflection |
| CN109283671A (en) * | 2018-11-09 | 2019-01-29 | 中国科学院长春光学精密机械与物理研究所 | A light, small, large field of view and low distortion quasi-coaxial five-mirror optical system |
| CN109283671B (en) * | 2018-11-09 | 2020-01-07 | 中国科学院长春光学精密机械与物理研究所 | A light, small, large field of view and low distortion quasi-coaxial five-mirror optical system |
| CN112230409A (en) * | 2020-09-28 | 2021-01-15 | 北京空间机电研究所 | High-efficiency visible-infrared co-aperture off-axis optical system |
| CN112305739A (en) * | 2020-11-23 | 2021-02-02 | 湖北久之洋红外系统股份有限公司 | Common-path wide-narrow-view-field combined infrared dual-waveband imaging optical system |
| CN112305739B (en) * | 2020-11-23 | 2024-01-26 | 湖北久之洋红外系统股份有限公司 | Infrared dual-band imaging optical system combining common optical path wide and narrow fields of view |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN205581391U (en) | Long burnt infrared optical system of catadioptric off -axis | |
| US9651763B2 (en) | Co-aperture broadband infrared optical system | |
| CN104317039B (en) | Reflex type telephoto objective lens | |
| CN103207452B (en) | Two waveband is the confocal surface imaging system of light path altogether | |
| CN205581405U (en) | Visible light / infrared dual waveband is long burnt optical system of bore altogether | |
| CN105334607B (en) | A kind of nothing blocks pure reflective optics | |
| CN106383401B (en) | A kind of extremely wide field of view off-axis incidence optical imaging system | |
| CN105759410A (en) | Refraction and reflection type large aperture and large field of view imaging system | |
| CN108957725A (en) | Improved Schmidt telescopic optical system | |
| CN102289056B (en) | Front objective lens with large field of view and large relative aperture for imaging spectrograph | |
| CN106405806B (en) | An ultra-wide spectrum athermal projection optical system for infrared target simulator | |
| CN110596870A (en) | Compact visible-infrared dual-waveband optical system | |
| CN102621683A (en) | Improved reflective/diffractive hybrid wide field Cassegrain telescope | |
| CN103913840B (en) | Large-aperture catadioptric three-component continuous zoom optical system | |
| CN116243470A (en) | An adjustable-focus ultra-long-wave infrared optical imaging system for cryogenic conditions | |
| CN113311575B (en) | Off-axis three-reflector optical system based on correcting plate | |
| CN106342262B (en) | Object lens of large relative aperture, large visual field and wide solar spectral telescope optical system | |
| CN113532426A (en) | Large-view-field energy detection optical system based on concentric sphere lens | |
| CN110850574A (en) | Large-caliber multiband refraction and reflection front telescope optical system | |
| CN215810884U (en) | Large-view-field energy detection optical system based on concentric sphere lens | |
| CN108345095A (en) | Wide-width low-stray-light all-time star tracker optical structure | |
| CN211043786U (en) | Large-caliber multiband refraction and reflection front telescope optical system | |
| RU182711U1 (en) | OPTICAL SYSTEM OF OPTICAL ELECTRONIC COORDINATOR | |
| CN113031238A (en) | Multi-mirror integrated large-view-field long-focus off-axis four-mirror optical system | |
| CN114326070A (en) | Large-caliber long-focus multispectral short-wave infrared optical system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160914 |