CN104316187A - Spectrum calibration device for large-visual-field hyper-spectrum imaging differential absorption spectrograph - Google Patents
Spectrum calibration device for large-visual-field hyper-spectrum imaging differential absorption spectrograph Download PDFInfo
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- CN104316187A CN104316187A CN201410626066.1A CN201410626066A CN104316187A CN 104316187 A CN104316187 A CN 104316187A CN 201410626066 A CN201410626066 A CN 201410626066A CN 104316187 A CN104316187 A CN 104316187A
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- integrating sphere
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- diffuse reflector
- spheroid
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Abstract
The invention discloses a spectrum calibration device for a large-visual-field hyper-spectrum imaging differential absorption spectrograph. The spectrum calibration device for the large-visual-field hyper-spectrum imaging differential absorption spectrograph comprises a quartz diffuse reflection integrating sphere, wherein a monitoring telescope and a monitoring spectrograph are arranged outside the quartz diffuse reflection integrating sphere and corresponds to an orifice, a rotary platform is also installed outside the quartz diffuse reflection integrating sphere in a rotary mode and corresponds to the orifice, and the large-visual-field hyper-spectrum imaging differential absorption spectrograph is arranged on the rotary platform. By the adoption of the spectrum calibration device for the large-visual-field hyper-spectrum imaging differential absorption spectrograph, the problems of an existing spectrum calibration device for the large-visual-field hyper-spectrum imaging differential absorption spectrograph are solved, and both spectrum calibration efficiency and spectrum calibration precision are improved.
Description
Technical field
The present invention relates to environmental monitoring field, specifically a kind of Large visual angle Hyper spectral Imaging difference absorption spectrum instrument spectrum scaling device.
Background technology
Large visual angle Hyper spectral Imaging difference absorption spectrum instrument by measure air, the ultraviolet on earth's surface, visible scattering spectrum and utilize trace gas ultraviolet, visible waveband " fingerprint " absorb, adopt difference absorption spectrum algorithm to obtain atmospheric trace gas concentration.This load adopts planar array detector to push away the mode of sweeping and works, and have 114 degree of Large visual angle, when track 705km, ground fabric width can reach 2600km.Load obtains the spectral information of ultraviolet, visible waveband, and its spectral calibration precision decides the final data inversion precision of load.
The mode that current employing element lamp combines with turntable carries out spectral calibration, as Fig. 1 shows.Robot scaling equipment comprises element lamp and high-accuracy turntable.Load is placed on turntable center, and light source etc. are placed on turntable cantilever, rotates around instrument entrance pupil.The light that scaling light source sends, can to the detector calibration of different spaces dimension through being rotated by turntable.Multiple rotary turntable cantilever completes complete visual field spectrum calibration.
The subject matter that existing robot scaling equipment exists is:
1, required time is calibrated longer.Current device single pass about covers 0.5 degree of visual field, as completed 114 degree of visual fields, need carry out 228 tests.
2, Large visual angle rotation can cause entrance pupil light to offset, and given marker tape carrys out deviation.
summary of the inventionthe object of this invention is to provide a kind of Large visual angle Hyper spectral Imaging difference absorption spectrum instrument spectrum scaling device, to solve prior art Problems existing.
In order to achieve the above object, the technical solution adopted in the present invention is:
Large visual angle Hyper spectral Imaging difference absorption spectrum instrument spectrum scaling device, it is characterized in that: comprise integrating sphere spheroid, integrating sphere spheroid side has fenestra, integrating sphere sphere inner wall is evenly provided with multiple light source, integrating sphere sphere inner wall is also provided with the quartzy diffuse reflector as reflecting surface, by integrating sphere spheroid, quartz diffuse reflector, light source forms quartzy diffuse reflector integrating sphere, be positioned at the outer corresponding fenestra position of quartzy diffuse reflector integrating sphere and be provided with supervision telescope, with the supervision supervision spectrometer of telescope by Fiber connection, the telescopical receiving end of described supervision aims at integrating sphere spheroid fenestra, be positioned at the outer corresponding fenestra position of quartzy diffuse reflector integrating sphere and be also rotatablely equipped with rotation platform, rotation platform is provided with Large visual angle Hyper spectral Imaging difference absorption spectrum instrument.
Described Large visual angle Hyper spectral Imaging difference absorption spectrum instrument spectrum scaling device, it is characterized in that: described light source is multiple mercury argon lamp and multiple PtCrNe hollow cathode lamp, and multiple mercury argon lamp and multiple PtCrNe hollow cathode lamp are evenly distributed on the surface of emission in integrating sphere spheroid respectively.
Described Large visual angle Hyper spectral Imaging difference absorption spectrum instrument spectrum scaling device, is characterized in that: described quartzy diffuse reflector is prepared on integrating sphere sphere inner wall through quartzy sandblasting, reverse side plated film by quartz glass.
The invention solves Problems existing in current Large visual angle Hyper spectral Imaging difference absorption spectrum instrument spectral calibration, improve spectral calibration efficiency and precision.
Accompanying drawing explanation
Fig. 1 is that the mode that prior art adopts element lamp to combine with turntable carries out spectral calibration schematic diagram.
Fig. 2 is structure principle chart of the present invention.
Embodiment
Shown in Figure 1, Large visual angle Hyper spectral Imaging difference absorption spectrum instrument spectrum scaling device, comprise integrating sphere spheroid 9, integrating sphere spheroid 9 side has fenestra 10, integrating sphere spheroid 9 inwall is evenly provided with multiple light source, integrating sphere spheroid 9 inwall is also provided with the quartzy diffuse reflector as reflecting surface, by integrating sphere spheroid 9, quartz diffuse reflector, light source forms quartzy diffuse reflector integrating sphere 1, be positioned at outer corresponding fenestra 10 position of quartzy diffuse reflector integrating sphere 1 and be provided with supervision telescope 4, the supervision spectrometer 6 be connected by optical fiber 5 with telescope 4 with supervision, monitor the receiving end aligning integrating sphere spheroid fenestra 10 with telescope 4, be positioned at outer corresponding fenestra 10 position of quartzy diffuse reflector integrating sphere 1 and be also rotatablely equipped with rotation platform 7, rotation platform 7 is provided with Large visual angle Hyper spectral Imaging difference absorption spectrum instrument 8.
Light source is multiple mercury argon lamp 2 and multiple PtCrNe hollow cathode lamp 3, and multiple mercury argon lamp 2 and multiple PtCrNe hollow cathode lamp 3 are evenly distributed on the surface of emission in integrating sphere spheroid 9 respectively.
Quartz diffuse reflector is prepared on integrating sphere spheroid 9 inwall through quartzy sandblasting, reverse side plated film by quartz glass.
Principle of work of the present invention is: be arranged in quartzy diffuse reflector integrating sphere 1 uniformly by element lamp (each 20 of mercury argon lamp 2, PtCrNe hollow cathode lamp 3), each small cup lamp all can work alone.Utilize rotation platform 7 to drive Large visual angle Hyper spectral Imaging difference absorption spectrum instrument 8 to rotate, measure for 3 times and can complete complete visual field spectrum calibration.Simultaneously, the monitoring component utilizing 4 supervision telescopes 4, optical fiber 5, supervision spectrometer 6 to form carries out Real-Time Monitoring, as standard source to the optical information that integrating sphere provides in test.
Principal feature of the present invention is: 1, invent the spectrum scaling device based on integrating sphere, element lamp, for load spectral calibration provides large area, uniform scaling light source; 2, invent quartzy diffuse reflector integrating sphere, this integrating sphere inside surface is made up of quartzy diffuse reflector.
Integrating sphere has the characteristic that can provide large area, evenly light output, is combined by spectral calibration element lamp with integrating sphere, can be spectral calibration and provides the scaling light source (about covering 40 degree) covered compared with Large visual angle.Generally polytetrafluoroethylmaterial material is adopted as the inside surface of reflection in integrating sphere, this material is no problem when being used as conventional radiation calibration, but when being used as spectral calibration, because polytetrafluoroethylmaterial material itself affect can bring structure to spectrum, affect spectral calibration precision.Therefore, invent the integrating sphere based on quartzy full marks plate, utilize quartzy diffuse reflector as reflecting surface, reduce because material self-characteristic is to calibrating the impact caused, this quartzy diffuse reflector by quartz glass through quartzy sandblasting (time 3-5min, 100-200 order emery, air pressure 0.6-0.8Mpa), prepared by the technique such as reverse side plated film.
Claims (3)
1. Large visual angle Hyper spectral Imaging difference absorption spectrum instrument spectrum scaling device, it is characterized in that: comprise integrating sphere spheroid, integrating sphere spheroid side has fenestra, integrating sphere sphere inner wall is evenly provided with multiple light source, integrating sphere sphere inner wall is also provided with the quartzy diffuse reflector as reflecting surface, by integrating sphere spheroid, quartz diffuse reflector, light source forms quartzy diffuse reflector integrating sphere, be positioned at the outer corresponding fenestra position of quartzy diffuse reflector integrating sphere and be provided with supervision telescope, with the supervision supervision spectrometer of telescope by Fiber connection, the telescopical receiving end of described supervision aims at integrating sphere spheroid fenestra, be positioned at the outer corresponding fenestra position of quartzy diffuse reflector integrating sphere and be also rotatablely equipped with rotation platform, rotation platform is provided with Large visual angle Hyper spectral Imaging difference absorption spectrum instrument.
2. Large visual angle Hyper spectral Imaging difference absorption spectrum instrument spectrum scaling device according to claim 1, it is characterized in that: described light source is multiple mercury argon lamp and multiple PtCrNe hollow cathode lamp, and multiple mercury argon lamp and multiple PtCrNe hollow cathode lamp are evenly distributed on the surface of emission in integrating sphere spheroid respectively.
3. Large visual angle Hyper spectral Imaging difference absorption spectrum instrument spectrum scaling device according to claim 1, is characterized in that: described quartzy diffuse reflector is prepared on integrating sphere sphere inner wall through quartzy sandblasting, reverse side plated film by quartz glass.
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| CN109324008A (en) * | 2018-12-03 | 2019-02-12 | 中国科学院合肥物质科学研究院 | Ultraviolet EO-1 hyperion Atmospheric components survey meter sunlight calibrates window baffle movable part |
| CN109374550A (en) * | 2018-11-16 | 2019-02-22 | 中国科学院合肥物质科学研究院 | Super-resolution spectrograph spectrum calibration method based on optical transmission spectra |
| CN111044872A (en) * | 2019-12-12 | 2020-04-21 | 苏州长光华芯光电技术有限公司 | Semiconductor laser device testing device |
| CN117147331A (en) * | 2023-10-27 | 2023-12-01 | 中国石油大学(华东) | Three-point bending test device and test method suitable for ultrathin brittle material |
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| CN117147331A (en) * | 2023-10-27 | 2023-12-01 | 中国石油大学(华东) | Three-point bending test device and test method suitable for ultrathin brittle material |
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| CN104316187B (en) | 2017-07-25 |
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