CN204788667U - Heavy -calibre infrared system calibrates equivalent optical system - Google Patents
Heavy -calibre infrared system calibrates equivalent optical system Download PDFInfo
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- CN204788667U CN204788667U CN201520372218.XU CN201520372218U CN204788667U CN 204788667 U CN204788667 U CN 204788667U CN 201520372218 U CN201520372218 U CN 201520372218U CN 204788667 U CN204788667 U CN 204788667U
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Abstract
The utility model discloses a heavy -calibre infrared system calibrates equivalent optical system, this system adopt the equivalent mirror of calibration group, switching speculum, small -size to calibrate the radiation demarcation that the infrared optical system of heavy -calibre was realized to the black matrix. Small, the light in weight of calibration system that this patent provided to because the small -size who adopts calibrates the black matrix and easily realizes high accuracy control, ensures to calibrate the precision. This patent can be used to the infrared celestial observation system of ground / space -based and the space earth observation system of heavy -calibre.
Description
Technical field
This patent relates to a kind of infrared system scaling system, is specifically related to a kind of heavy caliber infrared system equivalence calibration optical system.
Background technology
Heavy caliber infrared optical system can realize the highly sensitive infrared observation of high spatial resolution, is widely used in earth observation from space and ground/Space-based Surveillance astronomical sight field.In heavy caliber infrared optical system During Process of Long-term Operation, transmissivity of optical system, explorer response rate all can progressively change, and regular infrared calibration can realize the correction to system responses change.
For the infrared system of routine, generally high-precision black matrix is set in telescope porch and realizes radiation calibration.But heavy caliber infrared system is due to optics bore very large (usual more than 400 millimeters, even reach several meters), arrange calibration blackbody in telescope porch, black matrix size is corresponding also can be very large, manufacture difficulty is large, and the stability in operational process and precision are all difficult to control.
The calibration equivalent light path that this patent proposes combines the method switching mirror, small-bore black matrix can be adopted to realize the radiation calibration of heavy caliber infrared system, can be widely used in the Developing Application of heavy caliber infrared observation system.
Summary of the invention
The object of this patent is to provide that a kind of volume is little, precision is high, the infrared scaling system of good stability, solves the high precision calibration technical matters in existing heavy caliber infrared system operational process.
The technical scheme that this patent adopts is: a kind of calibration equivalent light path, and see Fig. 1, system light path comprises calibration blackbody 1, calibration equivalent mirror group 2, switched mirror 3, wherein:
The size of described calibration blackbody 1 should be able to fill calibration equivalent mirror group entrance pupil;
Described calibration equivalent mirror group 2 sends the incident successively for sequence has the first lens 201, second lens 202, the 3rd lens 203, the 4th lens 204, catoptron 205, the 5th lens 206, the 6th lens 207, the 7th lens 208 successively of radiant light with calibration blackbody 1, first lens 201, the 3rd lens 203 and the 6th lens 207 are germainium lens, the second lens 202, the 4th lens 204, the 5th lens 206, the 7th lens 208 are silicon lens; Calibrate the field angle of equivalent mirror group 2, numerical aperture, image planes position and main system and observe light path 4 equivalence;
During calibration, between the 3rd lens 405 that switched mirror 3 inserts the system treated in calibration heavy caliber infrared system and the 4th lens 406 of system, the calibration optical radiation that calibration blackbody 1 sends images on detector 5 after the 5th lens 407, window 408 of the 4th lens 406 calibrating equivalent mirror group 2, switched mirror 3 enters system, system, thus realizes the calibration to detector 5.
The advantage of this patent is:
Compare and arrange calibration blackbody in main system telescope porch, the robot scaling equipment black matrix size that this patent provides is little, is easy to realize high precision, and volume is little, lightweight, good stability.
Accompanying drawing explanation
Fig. 1 is heavy caliber infrared system calibration equivalent light path structural drawing.Wherein:
1---calibration blackbody;
2---calibration equivalent mirror group, 201---the first lens, 202---the second lens, 203---the 3rd lens, 204---the 4th lens, 205---catoptron, 206---the 5th lens, 207---the 6th lens, 208---the 7th lens;
3---switched mirror;
4---main system observation light path, 401---the principal reflection mirror of system, 402---the secondary mirror of system, 403---the first lens of system, 404---the second lens of system, 405---the 3rd lens of system, 406---the 4th lens of system, 407---the 5th lens of system, 408---window;
5---detector.
Fig. 2 is bore 600mm infrared system observation path optics modulation transfer function.
Fig. 3 is bore 600mm infrared system calibration equivalent light path optical-modulation transfer function.
Embodiment
According to technique scheme, devise a set of heavy caliber infrared optical system and calibration equivalent light path.
Heavy caliber infrared optical system index: F#=3, service band is 3.7 μm-4.8 μm, bore 600mm, focal length 1800mm, and field angle 0.6 °, optical texture as shown in Figure 1.
Heavy caliber infrared optical system lens parameters is as following table:
Calibration equivalent light path lens parameters is as following table:
| Face type | Radius-of-curvature | Center Gap | Size | |
| First lens 201 first surface | Sphere | 117.635mm | 4.048mm | Diameter 35mm |
| First 201 second, lens | Sphere | 116.866mm | 20.000mm | Diameter 35mm |
| Second lens 202 first surface | Sphere | 208.896mm | 5.000mm | Diameter 35mm |
| Second 202 second, lens | Sphere | 133.500mm | 20.000mm | Diameter 35mm |
| 3rd lens 203 first surface | Sphere | 248.352mm | 3.500mm | Diameter 35mm |
| 3rd 203 second, lens | Sphere | 1157.251mm | 25.000mm | Diameter 35mm |
| 4th lens 204 first surface | Sphere | 432.463mm | 5.000mm | Diameter 35mm |
| 4th 204 second, lens | Sphere | 156.786mm | 111.131mm | Diameter 35mm |
| Catoptron 205 | Plane | - | 40.000mm | Diameter 44mm |
| 5th lens 206 first surface | Sphere | 39.906mm | 25.854mm | Diameter 28mm |
| 5th 206 second, lens | Sphere | 52.402mm | 40.534mm | Diameter 28mm |
| 6th lens 207 first surface | Sphere | 79.594mm | 7.649mm | Diameter 44mm |
| 6th 207 second, lens | Sphere | 54.771mm | 14.661mm | Diameter 44mm |
| 7th lens 208 first surface | Sphere | 127.063mm | 18mm | Diameter 50mm |
| 7th 208 second, lens | Sphere | 26734.000mm | 58.619mm | Diameter 50mm |
| Switched mirror 3 | Plane | - | 29.000mm | Diameter 46mm |
Wherein, switched mirror 3 is for switching calibration equivalent light path 2 and main system observation light path 4.
Detector adopts 640 × 512 battle array cadmium-telluride-mercury infrared detectors, and pixel dimension size is 25 μm × 25 μm.
Calibration blackbody 1 is circular flat black matrix, and effective diameter is greater than 42mm and can meets the demands, much smaller than the main system bore of 600mm.
Calibration equivalent light path 2 is excellent with rear light path combined optical path picture element, see accompanying drawing 2.
Main system observation light path 4 is excellent with rear light path combined optical path picture element, see accompanying drawing 3.
Claims (1)
1. a heavy caliber infrared system calibration equivalent optical system, system comprises calibration blackbody (1), calibration equivalent mirror group (2), and switched mirror (3), is characterized in that:
The size of described calibration blackbody (1) should be able to fill calibration equivalent mirror group entrance pupil;
Described calibration equivalent mirror group (2) sends the incident of radiant light with calibration blackbody (1) successively has the first lens (201) successively for sequence, second lens (202), 3rd lens (203), 4th lens (204), catoptron (205), 5th lens (206), 6th lens (207), 7th lens (208), first lens (201), 3rd lens (203) and the 6th lens (207) are germainium lens, second lens (202), 4th lens (204), 5th lens (206), 7th lens (208) are silicon lens, calibrate the field angle of equivalent mirror group (2), numerical aperture, image planes position and main system and observe light path (4) equivalence,
During calibration, between the 3rd lens (405) that switched mirror (3) inserts the system treated in calibration heavy caliber infrared system and the 4th lens (406) of system, the calibration optical radiation that calibration blackbody (1) sends images on detector (5) after the 5th lens (407), window (408) of the 4th lens (406) calibrating equivalent mirror group (2), switched mirror (3) enters system, system, thus realizes the calibration to detector (5).
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| CN201520372218.XU CN204788667U (en) | 2015-01-21 | 2015-06-02 | Heavy -calibre infrared system calibrates equivalent optical system |
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| CN201510029322.3A CN104568160A (en) | 2015-01-21 | 2015-01-21 | Calibrating equivalent optical system for large-caliber infrared system |
| CN2015100293223 | 2015-01-21 | ||
| CN201520372218.XU CN204788667U (en) | 2015-01-21 | 2015-06-02 | Heavy -calibre infrared system calibrates equivalent optical system |
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| CN201510295592.9A Pending CN105004426A (en) | 2015-01-21 | 2015-06-02 | Calibration equivalent optical system for large-aperture infrared system |
| CN201520372218.XU Active CN204788667U (en) | 2015-01-21 | 2015-06-02 | Heavy -calibre infrared system calibrates equivalent optical system |
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| CN201510295592.9A Pending CN105004426A (en) | 2015-01-21 | 2015-06-02 | Calibration equivalent optical system for large-aperture infrared system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105004426A (en) * | 2015-01-21 | 2015-10-28 | 中国科学院上海技术物理研究所 | Calibration equivalent optical system for large-aperture infrared system |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106441589B (en) * | 2016-09-07 | 2018-12-25 | 北京航空航天大学 | A kind of planet infra-red radiation emulation mode based on sliding-model control |
| CN107817053B (en) * | 2017-09-28 | 2019-08-23 | 中国科学院长春光学精密机械与物理研究所 | A kind of heavy caliber infrared radiation measurement system calibrating method and device |
| CN109142261A (en) * | 2018-03-20 | 2019-01-04 | 昆明物理研究所 | Broadband environmental gas infrared telemetry monitors system and method |
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| CN100419398C (en) * | 2005-11-29 | 2008-09-17 | 中国科学院长春光学精密机械与物理研究所 | Field radiation calibration and calibrator for large-bore photoelectric system |
| JP6090787B2 (en) * | 2013-06-13 | 2017-03-08 | 国立研究開発法人産業技術総合研究所 | Optical sensor calibration method |
| CN103792010B (en) * | 2014-01-26 | 2016-08-17 | 中国科学院长春光学精密机械与物理研究所 | It is suitable for ground shadow zone target observation and the telescope LONG WAVE INFRARED imaging system of thermometric |
| CN103792009B (en) * | 2014-01-26 | 2016-11-09 | 中国科学院长春光学精密机械与物理研究所 | The Calibration of Infrared Radiation of ground large aperture telescope |
| CN104568160A (en) * | 2015-01-21 | 2015-04-29 | 中国科学院上海技术物理研究所 | Calibrating equivalent optical system for large-caliber infrared system |
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- 2015-01-21 CN CN201510029322.3A patent/CN104568160A/en active Pending
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105004426A (en) * | 2015-01-21 | 2015-10-28 | 中国科学院上海技术物理研究所 | Calibration equivalent optical system for large-aperture infrared system |
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| CN104568160A (en) | 2015-04-29 |
| CN105004426A (en) | 2015-10-28 |
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