CN205608278U - Star sensor optical imaging system - Google Patents
Star sensor optical imaging system Download PDFInfo
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- CN205608278U CN205608278U CN201620194851.9U CN201620194851U CN205608278U CN 205608278 U CN205608278 U CN 205608278U CN 201620194851 U CN201620194851 U CN 201620194851U CN 205608278 U CN205608278 U CN 205608278U
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Abstract
The utility model relates to a space optical imaging system discloses a star sensor optical imaging system, and this imaging system includes a diaphragm and five lenses, and five lenses are first lens, second lens, third lens, fourth lens and the 5th lens respectively, diaphragm, first lens, second lens, third lens, fourth lens and the 5th lens are arranged in proper order, and wherein, the the central axis of diaphragm, first lens, second lens, third lens, fourth lens and the 5th lens is coaxial, first lens and third lens are the aspheric surface positive lens, and second lens and the 5th lens are the sphere negative lens, and the fourth lens is the sphere positive lens. The utility model discloses positive negative lens is alternative each other, adopts aspherical lens, high -index material, makes refracting surface camber reduce to reduce off -axis aberration, make the interior image planes distortion curvature of field of whole view field range less, accomplish that each visual field disc of confusion diameter distribution is even.
Description
Technical field
This utility model relates to a kind of space optics imaging system, particularly relates to a kind of applicable aerospace environment height low orbit prolonged application, through engineering approaches, small light star sensor optical imaging system.
Background technology
Optical sensor technology utilizes starry sky imaging, utilizes spacing and the indeformable inertial attitude sensor carrying out attitude of flight vehicle navigator fix as referential of azimuth information of fixed star.Owing to having, certainty of measurement is high, long-time uses rift-free advantage, has obtained development greatly since nineteen fifties succeeds in developing.And optical sensor optical technology develops into guide with the technology of optical system of star sensor especially.
The focal length that in domestic 2004 " the photon journals " published, " Light and Compact Optical Systems for Star Sensors design " proposes is 22.7mm, relative aperture 1: 1.4, the angle of visual field is the optical system of 17.1 ° × 17.1 ° (visual fields, side), and this system Entry pupil diameters is less, only 16.2mm；The application documents of Application No. 200610170214.9 disclose star sense optical system structure and use the version of the 7 nearly telecentricity of chip, focal length is 49mm, relative aperture is 1: 1.2, and the angle of visual field is the optical system of 14.14 ° × 14.14 ° (circle visual fields).This system imaging quality is preferable, but available fields angle is less；Chinese patent ZL 201120363264.5, entitled " optical system of star sensor based on APS detector " have employed 8 spherical lenses, and consider the long-life design of optical system；The design example of above-mentioned announcement all uses the refraction type system structure of spherical lens, and sheet of elements number is more.
In recent years, along with the development and progress of technology, the development of optical system of star sensor is also had higher requirement to aspects such as quality, volume, service lifes.Aspheric surface technology is applied to the demand of star sensor system and day by day strengthens, currently used aspheric surface mainly has ellipsoid, hyperboloid, parabola etc., relative to traditional spherical lens, aspheric surface has the radius of curvature of change, model can not be used as spherical lens to be processed and detect, processing and detection difficulty are increased sharply.Aspheric surface is mainly plastic mould pressing and glass molds now, and precision is relatively low, is mainly used in image quality and requires relatively low batch illuminator and optical projection system.Plastic material uses temperature range narrower, and glass mold pressing kind is less.Jena company of Germany has relatively early carried out the aspherisation of lens of star sensor, and applies it in the middle of actual product, achieves preferable effect.The ASTRO-15 star sense optical system of its exploitation uses two panels high order aspheric surface lens to carry out spherical aberration correction, uses glued mirror to carry out chromatic aberration correction.And the back work distance of this system is the shortest, less than 2mm.Domestic optical system of star sensor is stopped to use glued mirror to avoid optical cement to go bad under spatial environments and is come off, and the back work distance less than 2mm brings bigger difficulty also to the assembling of detector assembly.
Utility model content
This utility model provides a kind of star sensor optical imaging system, this optical imaging system passes through distinctive five slice structures, and the alternateing of positive minus lens, use non-spherical lens, high-index material, making plane of refraction curvature reduce, thus reduce off-axis aberration, in making whole field range, the image planes distortion curvature of field is less, accomplish that each visual field disc of confusion diameter Distribution is uniform, solve the technical problem that star sensor optical imaging system generally exists.
The technical solution of the utility model is as follows:
A kind of star sensor optical imaging system, it is characterized in that this imaging system includes that a diaphragm and five eyeglasses, five eyeglasses are respectively the first eyeglass, the second eyeglass, the 3rd eyeglass, the 4th eyeglass and the 5th eyeglass；
Described diaphragm, the first eyeglass, the second eyeglass, the 3rd eyeglass, the 4th eyeglass and the 5th eyeglass are arranged in order, wherein, and diaphragm, the first eyeglass, the second eyeglass, the 3rd eyeglass, the 4th eyeglass and the central axis coaxial of the 5th eyeglass；
Described first eyeglass and the 3rd eyeglass are aspheric surface plus lens, and the second eyeglass and the 5th eyeglass are sphere minus lens, and the 4th eyeglass is sphere plus lens.
Above-mentioned diaphragm is fixed on the first eyeglass.
The front surface of above-mentioned first eyeglass and the 3rd eyeglass is secondary ellipsoid face type, its face type coincidence formula
Wherein,R is aspheric surface vertex curvature radius, and x, y are aspheric surface coordinate in the direction of the optical axis, and κ is aspheric surface circular cone coefficient.
The optical characteristics of above-mentioned first eyeglass is:
1.0f ' ＜ f1' ＜ 1.2f ', 1.4 ＜ n1＜ 1.6,0.5f1' ＜ R1＜ f1' ,-1.5f1' ＜ R2＜-2f1' ,-1 ＜ κ ＜ 0；
The optical characteristics of the second eyeglass is:
-2.0f ' ＜ f2' ＜-1.5f ', 1.6 ＜ n2＜ 1.8,1.0f2' ＜ R3＜ 0.5f2' ,-8f2' ＜ R4＜-8.5f2′；
The optical characteristics of the 3rd eyeglass is:
1.0f ' ＜ f3' ＜ 1.5f ', 1.4 ＜ n3＜ 1.6,0.5f3' ＜ R5＜ 1.0f3' ,-1.5f3' ＜ R6＜-1.0f3' ,-1 ＜ κ ＜ 0；
The optical characteristics of the 4th eyeglass is:
1.0f ' ＜ f4' ＜ 1.5f ', 1.6 ＜ n4＜ 1.8,0.5f4' ＜ R7＜ 1.0f4' ,-16f4' ＜ R8＜-14f4′；
The optical characteristics of the 5th eyeglass is:
-1.0f ' ＜ f5' ＜-0.5f ', 1.6 ＜ n5＜ 1.8,1.0f5' ＜ R9＜ 0.5f5', R10＜-5f5′；
The focal length that wherein f ' is this optical system, f1′、f2′、f3′、f4′、f5The focal length of ' respectively five lens, R1、R2、R3……R10It is respectively the radius of curvature in ten faces of five lens, n1、n2、n3……n5Being respectively the refractive index of five lens, κ is aspheric surface circular cone coefficient.
Distance-5mm ＜ the d of above-mentioned diaphragm and the first eyeglass1＜-3mm, the distance 1mm ＜ d of the first eyeglass and the second eyeglass2＜ 4mm, the distance 6mm ＜ d of the second eyeglass and the 3rd eyeglass3＜ 9mm, the 3rd eyeglass and the distance 5mm ＜ d of the 4th eyeglass4＜ 8mm, the 4th eyeglass and the distance 2mm ＜ d of the 5th eyeglass5＜ 5mm.
Above-mentioned first eyeglass and the 3rd eyeglass use fused silica material JGS1；Second eyeglass and the 5th eyeglass use dense flint glass material ZF4；4th eyeglass uses dense crown material ZK9.
Above-mentioned second eyeglass uses ZF404 or ZF504, the 5th eyeglass to use ZF404 or ZF504, the 4th eyeglass to use ZK509 or ZK409.
This utility model has the advantage that
1, this utility model uses transmission separate type to divide non-spherical structure, and diaphragm is preposition, and system entrance pupil is positioned at diaphragm, and the positive minus lens in five eyeglasses separates, and is conducive to correcting the curvature of field；
2, diaphragm is fixed on the first eyeglass and can reduce overall dimensions, and then reduces camera lens gross mass, it is thus achieved that bigger Entry pupil diameters；
3, excellent performance: the first eyeglass and the 3rd eyeglass use aspheric design, and five slice structures of positive minus lens alternate combinations so that optical system relative aperture 1: 1.2, Entry pupil diameters 36mm, in the range of angle of visual field φ 20 °, image quality is excellent.
4, the life-span is long: use this optical system of star sensor imaging arrangement, first mirror and the 3rd mirror use the fused silica glass that radiation-resistant property is excellent, second eyeglass can use ZF404 or ZF504,5th eyeglass can use ZF404 or ZF504,4th eyeglass can use the stabilized glass materials such as ZK509 or ZK409 to replace original common optical glass material, just can meet spatial environments height low orbit requirements above in 10 year service life.
5, small light: use number of lenses few in whole system structure, and the glass materials refractive index that eyeglass is used is higher, so eyeglass is relatively thin so that whole system lightweight, volume is little.
6, using high-index material, make plane of refraction curvature reduce, thus reduce off-axis aberration, in the range of making the whole angle of visual field, image planes are more smooth, accomplish that each visual field disperse diameter is uniform.
Accompanying drawing explanation
Fig. 1 is this utility model optical system of star sensor structural representation；
Wherein accompanying drawing 1 is labeled as: 1-the first eyeglass, 2-the second eyeglass, 3-the 3rd eyeglass, 4-the 4th eyeglass, 5-the 5th eyeglass, 6-diaphragm, 7-detector protecting window；
Fig. 2 is the energy profile using this utility model difference visual field disc of confusion；
Fig. 3 is for using distortion distribution curve figure of the present utility model；
Fig. 4 is this utility model life-span early stage and the scatter chart of later stage in life-span transmitance.
Detailed description of the invention
As shown in Figure 1: a kind of star sensor optical imaging system; this imaging system includes that 6, five eyeglasses of a diaphragm and a detector protecting window 7 are constituted; first to the 5th eyeglass is arranged in order; wherein; first eyeglass the 1, the 3rd eyeglass 3 and the 4th eyeglass 4 are plus lens, and the second eyeglass 2 and the 5th eyeglass 5 are minus lens；Before diaphragm 6 is arranged on the first eyeglass 1, after detector protecting window 7 is arranged on the 5th eyeglass 5, wherein, the first eyeglass 1 and the 3rd eyeglass 3 are aspheric surface plus lens, and the second eyeglass 2 and the 5th eyeglass 5 are sphere minus lens, and the 4th eyeglass 4 is sphere plus lens.
Fig. 1 gives structural representation of the present utility model, and including a diaphragm 6 and five eyeglasses, five eyeglasses are respectively the first eyeglass the 1, second eyeglass the 2, the 3rd eyeglass the 3, the 4th eyeglass 4 and the 5th eyeglass 5；Diaphragm, the first eyeglass, the second eyeglass, the 3rd eyeglass, the 4th eyeglass and the 5th eyeglass are arranged in order, and diaphragm, the first eyeglass, the second eyeglass, the 3rd eyeglass, the 4th eyeglass and the central axis coaxial of the 5th eyeglass, wherein, first eyeglass and the 3rd eyeglass are aspheric surface plus lens, second eyeglass and the 5th eyeglass are sphere minus lens, and the 4th eyeglass is sphere plus lens；When using this utility model, after detector protecting window can being placed in the 5th eyeglass, before detector.
This utility model uses transmission separate type to divide non-spherical structure, and diaphragm is preposition, and system entrance pupil is positioned at diaphragm；Positive minus lens in five eyeglasses separates, and is conducive to correcting the curvature of field.
Diaphragm is fixed on the first eyeglass, it is possible to reduce overall dimensions, and then reduces camera lens gross mass, it is thus achieved that bigger Entry pupil diameters.
The front surface of the first eyeglass 1 and the 3rd eyeglass 3 is secondary ellipsoid face type, its face type coincidence formulaWhereinR is aspheric surface vertex curvature radius, and x, y are aspheric surface coordinate in the direction of the optical axis, and κ is aspheric surface circular cone coefficient.
Although high order aspheric surface more than secondary has the ability of more preferable aberration correction, but its processing and detection are more difficult to control, differing greatly between preferable and actual application, and risk is relatively big, and therefore, this utility model selects more ripe quadratic surface.
The optical characteristics of the first eyeglass is:
1.0f ' ＜ f1' ＜ 1.2f ', 1.4 ＜ n1＜ 1.6,0.5f1' ＜ R1＜ f1' ,-1.5f1' ＜ R2＜-2f1' ,-1 ＜ κ ＜ 0；
The optical characteristics of the second eyeglass is:
-2.0f ' ＜ f2' ＜-1.5f ', 1.6 ＜ n2＜ 1.8,1.0f2' ＜ R3＜ 0.5f2' ,-8f2' ＜ R4＜-8.5f2′；
The optical characteristics of the 3rd eyeglass is:
1.0f ' ＜ f3' ＜ 1.5f ', 1.4 ＜ n3＜ 1.6,0.5f3' ＜ R5＜ 1.0f3' ,-1.5f3' ＜ R6＜-1.0f3' ,-1 ＜ κ ＜ 0；
The optical characteristics of the 4th eyeglass is:
1.0f ' ＜ f4' ＜ 1.5f ', 1.6 ＜ n4＜ 1.8,0.5f4' ＜ R7＜ 1.0f4' ,-16f4' ＜ R8＜-14f4′；
The optical characteristics of the 5th eyeglass is:
-1.0f ' ＜ f5' ＜-0.5f ', 1.6 ＜ n5＜ 1.8,1.0f5' ＜ R9＜ 0.5f5', R10＜-5f5′；
The focal length that wherein f ' is this optical system, such as Fig. 1, the first eyeglass, the second eyeglass, the 3rd eyeglass, the 4th eyeglass and the 5th eyeglass are arranged in order from left to right, and each lens all include two faces, the respectively left side and the right side；f1′、f2′、f3′、f4′、f5The focal length of ' respectively five lens；R1、R2It is respectively the first eyeglass left side and the radius of curvature on the right side, R3、R4It is respectively the second eyeglass left side and the radius of curvature on the right side, R5、R6It is respectively the 3rd eyeglass left side and the radius of curvature on the right side, R7、R8It is respectively the 4th eyeglass left side and the radius of curvature on the right side, R9、R10It is respectively the 5th eyeglass left side and the radius of curvature on the right side；n1、n2、n3……n5Being respectively the Refractive Index of Material of five lens, κ is aspheric surface circular cone coefficient.
Distance-5mm ＜ the d of optical system diaphragm and the first eyeglass1＜-3mm, the distance 1mm ＜ d of the first eyeglass and the second eyeglass2＜ 4mm, the distance 6mm ＜ d of the second eyeglass and the 3rd eyeglass3＜ 9mm, the 3rd eyeglass and the distance 5mm ＜ d of the 4th eyeglass4＜ 8mm, the 4th eyeglass and the distance 2mm ＜ d of the 5th eyeglass5＜ 5mm.
This utility model the first eyeglass and the 3rd lens optical lens design are aspheric surface, and material uses fused silica material, have that density is little, Flouride-resistani acid phesphatase, anticorrosive, the little advantage of thermal coefficient of expansion.Second eyeglass, the 4th eyeglass and the 5th eyeglass use simple glass, it is possible to use Flouride-resistani acid phesphatase optical glass to replace the upgrading of the long-life to system.
This utility model does not use unconventional dispersive glass material, the first eyeglass and the 3rd eyeglass to use the design of JGS1 fused silica material, beneficially later stage aspherical mirror machining and Flouride-resistani acid phesphatase.If it is considered that use the Maturity of material, the second eyeglass and the 5th eyeglass to use dense flint glass material ZF4；4th eyeglass uses dense crown material ZK9.ZF4 and ZK9 have refractive index high, physical and chemical performance is good and absorbs little feature, if it is considered that after long-life and resistance to radiation factor, second eyeglass uses ZF404 or ZF504,5th eyeglass uses ZF404 or ZF504,4th eyeglass uses ZK509 or ZK409, the glass material of resistance to illuminated optical ZF504 or ZF404 of identical refractive index, identical abbe number will be replaced with by ZF4, ZK9 is replaced with the glass of resistance to illuminated optical ZK509 or ZK409 of identical refractive index, identical abbe number, i.e. system can be carried out long-life upgrading.
Below in conjunction with Figure of description, describe detailed description of the invention of the present utility model in detail:
The accompanying drawing 1 small-sized long-life optical lens structural representation designed by this utility model; as can be seen from the figure; designed small-sized long-life optical lens has five lens; it is three positive two negative; its optical system ordering is: diaphragm the 6, first eyeglass 1 is aspheric surface plus lens, the second eyeglass 2 is sphere minus lens, the 3rd eyeglass 3 is aspheric surface plus lens, the 4th eyeglass 4 is sphere plus lens, the 5th eyeglass 5 is sphere minus lens, protection glass 7, and whole camera lens is without glued mirror, without vignetting.Wherein, table 1 is the focal length of each lens in this optical system, radius of curvature and the list of refractive index.
Table 1 optical system components focal length, refractive index and radius of curvature value
This utility model optical system stated by table 1, it is possible to achieve focal length about 43mm, clear aperture 36mm, the optical lens that the angle of visual field is 20 °, in its optical system full filed, disc of confusion is more than 10um, less than 49um；Its optical system absolute distortion in full filed is less than or equal to ± 3 μm.
This small-sized long-life optical system, by changing the second mirror, borders and the 5th mirror material, can complete upgrading long-life to optical system.
This utility model also has the advantages that
Common optical system is when high orbit 8～more than 15 years work, the Space Particle that penetration capacity is stronger can penetrate glass elements superficial film easily and arrive inside optical material, it is mainly manifested in ordinary optical materials by losing original bright effect after irradiation, turning black and changing color, causes optical system to lose efficacy.And long-life optical system can effectively resist Space Particle radiation environment, selected material is less sensitive to Space Particle irradiation, will not produce turning black and changing color phenomenon.
This utility model considers anti-high energy particle irradiation, the atomic oxygen erosion of LEO and the low-energy electron Radiation Characteristics of optical system.First consider that whole optical system uses sphere, sphere is optimized design, then select the performance impact of optical system faced by which in the final stage optimized maximum, then the conic section constant in this face is optimized as variable addition.
This utility model uses high-index material, makes plane of refraction curvature reduce, thus reduces off-axis aberration, and in the range of making the whole angle of visual field, image planes are more smooth, accomplish that the disperse of each visual field is uniform.By using the glass pairing of different abbe number to use correcting chromatic aberration.As shown in table 2, it is possible to achieve in 0.8 normalization visual field, different wave length is relative to disc of confusion energy barycenter absolute value of the bias ＜ 4 μm of 0.62 mum wavelength.
When correcting distorted, use S type distortion correction method, the distortion in peripheral field and 0.8 visual field is corrected simultaneously.
All can be seen that from table 3 and Fig. 4 this optical system can meet long-life use requirement, optical system stands 1E8Rad irradiation dose rear optical system transmitance at different tracks and declines limited, does not interferes with system detection signal to noise ratio.
Table 2 different wave length disc of confusion mass centre is relative to deviation value y (μm) of 0.62 mum wavelength image height (energy barycenter)
Table 3 long-life optical system beginning of lifetime and end of lifetime transmitance value
| Eyeglass data | 470nm | 500nm | 600nm | 700nm | 750nm |
| Predose % | 73.3 | 83.5 | 86.6 | 85.8 | 85.6 |
| % after irradiation | 56.4 | 66.1 | 78.3 | 77.9 | 78.8 |
Claims (7)
1. a star sensor optical imaging system, it is characterised in that: this imaging system includes a diaphragm
With five eyeglasses, five eyeglasses be respectively the first eyeglass, the second eyeglass, the 3rd eyeglass, the 4th eyeglass and
5th eyeglass；
Described diaphragm, the first eyeglass, the second eyeglass, the 3rd eyeglass, the 4th eyeglass and the 5th eyeglass are successively
Arrangement, wherein, diaphragm, the first eyeglass, the second eyeglass, the 3rd eyeglass, the 4th eyeglass and the 5th eyeglass
Central axis coaxial；
Described first eyeglass and the 3rd eyeglass are aspheric surface plus lens, and the second eyeglass and the 5th eyeglass are ball
Face minus lens, the 4th eyeglass is sphere plus lens.
Star sensor optical imaging system the most according to claim 1, it is characterised in that:
Described diaphragm is fixed on the first eyeglass.
Star sensor optical imaging system the most according to claim 2, it is characterised in that:
The front surface of described first eyeglass and the 3rd eyeglass is secondary ellipsoid face type, its face type coincidence formula
Wherein,R is aspheric surface vertex curvature radius, and x, y are that aspheric surface is at optical axis
Coordinate on direction, κ is aspheric surface circular cone coefficient.
4. according to the arbitrary described star sensor optical imaging system of claims 1 to 3, it is characterised in that:
The optical characteristics of described first eyeglass is:
1.0f ' ＜ f '1＜ 1.2f ', 1.4 ＜ n1＜ 1.6,0.5f '1＜ R1＜ f '1,-1.5f '1＜ R2＜-2f '1,
-1 ＜ κ ＜ 0；
The optical characteristics of the second eyeglass is:
-2.0f ' ＜ f '2＜-1.5f ', 1.6 ＜ n2＜ 1.8,1.0f '2＜ R3＜ 0.5f '2,-8f '2＜ R4＜-8.5f '2；
The optical characteristics of the 3rd eyeglass is:
1.0f ' ＜ f '3＜ 1.5f ', 1.4 ＜ n3＜ 1.6,0.5f '3＜ R5＜ 1.0f '3,-1.5f '3＜ R6＜-1.0f '3,
-1 ＜ κ ＜ 0；
The optical characteristics of the 4th eyeglass is:
1.0f ' ＜ f '4＜ 1.5f ', 1.6 ＜ n4＜ 1.8,0.5f '4＜ R7＜ 1.0f '4,-16f '4＜ R8＜-14f '4；
The optical characteristics of the 5th eyeglass is:
-1.0f ' ＜ f '5＜-0.5f ', 1.6 ＜ n5＜ 1.8,1.0f '5＜ R9＜ 0.5f '5, R10＜-5f '5；
The focal length that wherein f ' is this optical system, f '1、f′2、f′3、f′4、f′5It is respectively Jiao of five lens
Away from, R1、R2、R3……R10It is respectively the radius of curvature in ten faces of five lens, n1、n2、n3……
n5Being respectively the refractive index of five lens, κ is aspheric surface circular cone coefficient.
Star sensor optical imaging system the most according to claim 4, it is characterised in that: described light
Door screen and the distance-5mm ＜ d of the first eyeglass1＜-3mm, the first eyeglass and the distance of the second eyeglass
1mm ＜ d2＜ 4mm, the distance 6mm ＜ d of the second eyeglass and the 3rd eyeglass3＜ 9mm, the 3rd eyeglass and the 4th
The distance 5mm ＜ d of eyeglass4＜ 8mm, the 4th eyeglass and the distance 2mm ＜ d of the 5th eyeglass5＜ 5mm.
Star sensor optical imaging system the most according to claim 5, it is characterised in that: described
One eyeglass and the 3rd eyeglass use fused silica material JGS1；Second eyeglass and the 5th eyeglass use dense flint
Glass material ZF4；4th eyeglass uses dense crown material ZK9.
Star sensor optical imaging system the most according to claim 5, it is characterised in that: described
Two eyeglasses use ZF404 or ZF504, the 5th eyeglass to use ZF404 or ZF504, and the 4th eyeglass is adopted
With ZK509 or ZK409.
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| CN201620194851.9U CN205608278U (en) | 2016-03-14 | 2016-03-14 | Star sensor optical imaging system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105676430A (en) * | 2016-03-14 | 2016-06-15 | 中国科学院西安光学精密机械研究所 | Star sensor optical imaging system |
| CN113917653A (en) * | 2021-09-16 | 2022-01-11 | 中国科学院西安光学精密机械研究所 | Low-distortion small-scale space debris wide-area detection optical system |
-
2016
- 2016-03-14 CN CN201620194851.9U patent/CN205608278U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105676430A (en) * | 2016-03-14 | 2016-06-15 | 中国科学院西安光学精密机械研究所 | Star sensor optical imaging system |
| CN105676430B (en) * | 2016-03-14 | 2018-05-29 | 中国科学院西安光学精密机械研究所 | A kind of star sensor optical imaging system |
| CN113917653A (en) * | 2021-09-16 | 2022-01-11 | 中国科学院西安光学精密机械研究所 | Low-distortion small-scale space debris wide-area detection optical system |
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