CN202471390U - Spectrum simulation system with adjustable spectrum weight - Google Patents
Spectrum simulation system with adjustable spectrum weight Download PDFInfo
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- CN202471390U CN202471390U CN2012200184976U CN201220018497U CN202471390U CN 202471390 U CN202471390 U CN 202471390U CN 2012200184976 U CN2012200184976 U CN 2012200184976U CN 201220018497 U CN201220018497 U CN 201220018497U CN 202471390 U CN202471390 U CN 202471390U
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Abstract
The utility model relates to a spectrum simulation system with an adjustable spectrum weight. The system comprises a light source system, a splitting system, a light intensity adjusting system, a spectrum mixing and monitoring system and a controlling system. The splitting system, the light intensity adjusting system and the spectrum mixing and monitoring system are arranged in turn on an emitting optical path of the light source system. The controlling system is connected with the light source system, the light intensity adjusting system and the spectrum mixing and monitoring system. The utility model provides the spectrum simulation system with the adjustable spectrum weight which can monitor spectrum radial brightness and spectrum weight simulated by the spectrum simulation system in a real time manner.
Description
Technical field
The utility model belongs to optical field, relates to a kind of spectroscopic light source simulation system, relates in particular to a kind of spectral weight adjustable type spectral simulation system of visible, near infrared spectral line.
Background technology
In astronomical sight, in order to observe the brightness situation of change of various celestial bodies, need a kind of astronomical observation camera of development, because the component of various celestial bodies is different, so different celestial bodies are also different to the reflectivity curve of solar spectrum.At present domestic have two kinds of methods that the detectivity of surveying camera is demarcated: a kind of is in the remote mountains away from the city; Fixed star that generally acknowledge in the world, known magnitude is carried out the field takes pictures; And gather relevant magnitude data, through Flame Image Process the observation camera is calibrated and demarcated.This kind method receives the influence of physical environment, sometimes waits for tens days continuously and also differ obtaining the weather condition of desirable satisfied test surely; Another kind of scaling method is the detectivity of astronomical observation camera to be demarcated with star simulator in the laboratory; This method is simple; Do not receive the influence of physical environment, but this method can not be simulated the radiation characteristic of various different celestial bodies, cause surveying camera calibration not accurate enough.
Development along with China's Aerospace Technology and space-based detection camera has proposed more accurately requirement to the detectivity of surveying camera.Because the characteristics of luminescence of various celestial bodies different (comprising the luminous or reflected sunlight spectrum of celestial body self), so, the detectivity of camera being surveyed is also risen to the detectivity of camera under different spectral line weights.Because breadboard star simulator uses xenon source or halogen tungsten lamp light source; The asterism spectral line that simulation is come out is single; When the peak wavelength of asterism spectral line with survey camera explorer response peak wavelength when corresponding, the detectivity of the detection camera that calibrates may be very high, but when the celestial body of the same magnitude of actual photographed; Differ far away because the spectral line peak wavelength of celestial body is different from detection camera explorer response peak wavelength, will probably survey less than this asterism; Equally; When the asterism spectral line peak wavelength position that simulation is come out differed far away with detection camera explorer response peak wavelength, the detectivity of the detection camera that calibrates can be on the low side, such as; Demarcate a detection camera and can only detect 8 stars such as grade; But when outfield experiments, it is perhaps higher that this camera possibly detect the 9 grade stars darker than 8 stars such as grade, and reason is exactly because the response spectrum of the radiation spectrum of this star such as 9 grade and detector is more approaching.So; Must consider the Spectral matching problem in the laboratory and even on ground in the face of surveying in the demarcation of camera detectivity; The spectrum that the method for two kinds of detection camera calibrations that tradition is used all can not be simulated different spectral weight, this problem have risen to surveys the principal contradiction that the camera detectivity is demarcated.So, need the tunable type composite light source of a kind of spectral weight of development, to satisfy to surveying camera high-precision calibrating to detectivity under various spectral profile.
The utility model content
In order to solve existing above-mentioned technical matters in the background technology, the utility model provides and a kind ofly can monitor the spectral radiance that spectral simulation system simulation comes out and the spectral weight adjustable type spectral simulation system of spectral weight in real time.
The technical solution of the utility model is: the utility model provides a kind of spectral weight adjustable type spectral simulation system, and its special character is: said spectral weight adjustable type spectral simulation system comprises light-source system, beam splitting system, light intensity regulating system, spectrum mixing and monitoring system and control system; Said beam splitting system, light intensity regulating system and spectrum mix and monitoring system is set in turn on the emitting light path of light-source system; Said control system is mixed with light-source system, light intensity regulating system and spectrum respectively and is linked to each other with monitoring system.
Above-mentioned light-source system comprises xenon source, parabolic concentrator, slit diaphragm and collimation lens; Said xenon source is arranged on by in the formed cavity of parabolic concentrator; Said slit diaphragm and collimation lens are successively set on the emitting light path after the parabolic concentrator mirror reflection.
Above-mentioned beam splitting system comprises blazed grating and plus lens; Said blazed grating is arranged on the emitting light path behind the collimation lens; Said plus lens is arranged on the emitting light path of blazed grating.
Above-mentioned light intensity regulating system comprises incident fiber array, dimmer and emergent light fibre array; Said incident optical array is arranged on the emitting light path behind the plus lens, and the incident end of said incident optical array overlaps with the focal plane, picture side of plus lens; Said dimmer is arranged on the emitting light path of incident optical; Said emergent light fibre array is arranged on the emitting light path of dimmer.
Above-mentioned dimmer comprises electric variable diaphragm and relay lens; Said electric variable diaphragm and relay lens are successively set on the emitting light path behind the incident optical array.
Above-mentioned spectrum mixes with monitoring system and comprises integrating sphere, spectral radiance meter probe and manual iris; Said integrating sphere is arranged on the emitting light path of emergent light fibre array; Said spectral radiance meter probe is arranged on the integrating sphere inwall; Said manual iris is arranged on the exit of integrating sphere.
Above-mentioned control system comprises xenon lamp controller, dimmer controller and spectral radiance meter controller; Said xenon lamp controller links to each other with xenon source; Said dimmer controller dimmer links to each other; Said spectral radiance meter controller links to each other with integrating sphere and is used to keep watch on the spectral radiance value and the spectral distribution curve of the output of integrating sphere.
Above-mentioned relay lens is that bore is that Φ 8mm, focal length are the lens of 5mm.
Above-mentioned slit diaphragm is a rectangular aperture, and the size of said rectangular aperture is 1mm * 4mm; Said collimation lens is that bore is that Φ 50mm, focal length are the lens of 150mm; The grating constant of said blazed grating is 3.33 * 10
-3Mm, blaze wavelength is 0.5 μ m, and blazing angle is 4.3 °, and effectively portraying area is 64mm * 64mm; Said plus lens is that bore is Ф 100mm, and focal length is the lens of 300mm.
Above-mentioned incident optical array comprises 168 optical fiber; All optical fiber of said incident optical array divide 4 rows to arrange by regular hexagon; The simple optical fiber diameter of said incident optical array is Ф 1.5mm, and the core diameter of said incident optical array is Ф 1.0mm; Said emergent light fibre array comprises 168 optical fiber, and the simple optical fiber diameter of said emergent light fibre array is Φ 2mm, and the core diameter of said emergent light fibre array is Ф 1.5mm.
The utility model has the advantages that:
1) the spectral weight adjustable type spectral simulation device system of the utility model: use blazed grating as beam splitter; With plus lens the monochromatic light of various wavelength is incorporated in the different fibers respectively again and transmits; Reduce system's optical energy loss, dwindled the volume of system;
2) the spectral weight adjustable type spectral simulation device system of the utility model: use the fiber array of thick fibre core, thin clad, adopt the regular hexagon arrangement mode, have very high activity coefficient;
3) the spectral weight adjustable type spectral simulation device system of the utility model: on 0.35 μ m～1.0 μ m spectral coverages, used 84 optical fiber, averaged spectrum resolution is 7.86nm, has higher spectral simulation resolution characteristic;
4) the spectral weight adjustable type spectral simulation device system of the utility model: use the electric variable diaphragm, change the weight of various wavelength energy automatically, can be very easily as requested spectral distribution curve simulate suitable radiation spectrum;
5) the spectral weight adjustable type spectral simulation device system of the utility model: use integrating sphere to make the spectrum mixer, the spectrum that simulation is come out has very high spectrum homogeneity, angle homogeneity and surface uniformity;
6) the spectral weight adjustable type spectral simulation device system of the utility model: the spectral radiance meter probe is installed on the integrating sphere inwall, can monitors the spoke brightness and the spectral distribution curve of output spectrum in real time;
7) the spectral weight adjustable type spectral simulation device system of the utility model: in the integrating sphere exit manual iris is installed, can changes the size of radiating surface very easily.
The spectral weight adjustable type spectral simulation device of the utility model can provide the uniform area light source of different spectral weight as requested, monitors the spoke brightness value and the spectral distribution curve of output spectrum simultaneously in real time with spectral radiance meter.Domesticly can only do light source with xenon lamp or halogen tungsten lamp at present, the curve of spectrum of simulation is single, can't satisfy celestial body and survey the staking-out work of camera under different SED situation.The domestic blank that can't simulate the distribution light source of any optic spectrum line has been filled up by the spectrum adjustable type spectral simulation system of the utility model.
Description of drawings
Fig. 1 is the structural representation of the spectral weight adjustable type spectral simulation system that provides of the utility model;
Fig. 2 is the incident optical array structure enlarged diagram that the utility model adopts;
Fig. 3 is the enlarged diagram of the dimmer that adopts of the utility model;
1-xenon source, 2-parabolic concentrator, 3-slit diaphragm, 4-collimation lens, 5-blazed grating, 6-plus lens, 7-incident optical array, 8-dimmer, 81-electric variable diaphragm, 82-relay lens, 9-emergent light fibre array, 10-integrating sphere, the manual iris of 11-, 12-spectral radiance meter probe, 13-dimmer controller, 14-spectral radiance meter, 15-xenon source controller.
Embodiment
Referring to Fig. 1; The spectral weight adjustable type spectral simulation device of the utility model comprises xenon source 1, parabolic concentrator 2, slit diaphragm 3, collimation lens 4, blazed grating 5, plus lens 6, incident optical array 7, dimmer 8, electric variable diaphragm 81, relay lens 82, emergent light fibre array 9, integrating sphere 10, manual iris 11, spectral radiance meter probe 12, dimmer controller 13, spectral radiance meter 14, xenon source controller 15; Parabolic concentrator 2 is arranged on the outside of xenon source 1, and slit diaphragm 3 is arranged on the emitting light path of parabolic concentrator 2, and collimation lens 4 is arranged on the emitting light path of slit diaphragm 3; And its focus is positioned on the slit diaphragm 3, and blazed grating 5 is arranged on the emitting light path of collimation lens 4, makes incident light wave generation diffraction; Plus lens 6 is arranged on the emitting light path of blazed grating 5; The diffracted wave of different wave length is converged on its focal plane interfere, thereby with the spectrum of different wave length separately, realize beam split; The incident end of incident optical array 7 is arranged on the focal plane of plus lens 6; Exit end is separately positioned on the entrance port of dimmer 8, and the incident end of emergent light fibre array 9 is arranged on the exit portal of dimmer 8, and its exit end is arranged on the integrating sphere 10; Manually iris 11 is arranged in the outlet of integrating sphere 10; Spectral radiance meter probe 12 is arranged on the inwall of integrating sphere 10, and dimmer controller 13, spectral radiance meter 14 and xenon lamp controller 15 are arranged on the outside of system, is used to control the spoke brightness value and the spectral distribution of whole simulation system output.
The spectrum that xenon source 1 sends converges on the slit diaphragm 3 through parabolic concentrator 2, after slit diaphragm 3 modulation, forms collimated light beam through collimation lens 4 and incides on the blazed grating 5; Behind secondary color collimated light beam process blazed grating 5 diffraction, the emergence angle of different wave length spectrum is different, after converging through plus lens 6 again; Emission is interfered on the focal plane of plus lens 6, forms colored interference fringe, and incident optical array 7 is collected the spectral energy of different wave length and is transferred to dimmer 8 in the different fibers; Change the size of relay lens clear aperture through electronic diaphragm 81; Referring to Fig. 3, realize the adjustment of light intensity, adjusted light converges in the emergent light fibre array 9 through relay lens 82; Be transferred to integrating sphere 10 through emergent light fibre array 9 again; On integrating sphere 10 inwalls diffuse reflection taking place, the light wave of various wavelength is mixed again, exports from the integrating sphere mouth.Manually iris 11 is used for changing the size of exit facet light source useful area; Dimmer controller 12 is used for controlling effective clear aperture of electric variable diaphragm 81; Thereby the spectral energy of adjustment corresponding wavelength; Spectral radiance meter 14 is used for keeping watch on the spectral radiance value and the spectral distribution curve of integrating sphere 10 outputs, and xenon source controller 15 is used for controlling xenon source 1.The utility model utilizes said system to simulate the uniform area light source of different weight spectral distribution just, and concrete principle of work is following:
The spectral energy polished object face condenser 2 that xenon source 1 gives off converges on the slit diaphragm 3, and the logical light area of slit diaphragm 3 is 1mm * 4mm, and slit diaphragm 3 is positioned on the object space focal plane of collimation lens 4 simultaneously; Effective clear aperature of collimation lens 4 is Φ 50mm, and focal length is 150mm, and plane blazed grating 5 is installed in collimation lens 4 about 400mm place afterwards; The spot size of collimated light beam on plane grating 5 through collimation lens 4 outgoing is Φ 60mm, and the delineation face of blazed grating 5 is a rectangle, and useful area is 64mm * 64mm; So; All luminous energies are all by effective reflection and diffraction, and on the direction of diffraction light outgoing, apart from blazed grating 500mm place a focal length being installed is 300mm; Bore is the plus lens 6 of 100mm; Calculate according to the focal length of characteristic dimension, blazing angle and the plus lens 6 of blazed grating and can know that the light wave of 350nm～1000nm is arranged overall width and is about 63mm on the plus lens focal plane, length is about 8mm.The incident end of incident optical array 7 is installed on the focal plane of plus lens 6, and like this, the homogeneous beam that on plus lens 6 focal planes, converges will be incorporated into respectively in the different fibers; Incident optical array 7 comprises 168 optical fiber altogether; Referring to shown in Figure 2, divide 4 rows to arrange 42 of every rows by regular hexagon; The external diameter of simple optical fiber is Ф 1.5mm, and core diameter is Ф 1.2mm.So fiber array two rows fiber core overlap width is 0.45mm, can avoids being positioned at a large amount of losses of spectral energy at optical fibre packages coating place like this and cause final spectrum discontinuous.Owing on the spectral coverage of 350nm～1000nm, used 84 optical fiber to collect spectral energy altogether, so the averaged spectrum resolution of this spectral simulation device can reach 7.8nm.Monochromatic spectrum is input in the dimmer 8 through incident optical array 7 respectively; Dimmer 8 has comprised 168 junior units altogether; The output power of an optical fiber luminous energy of each Self Control of each junior unit, when the incident end incident of spectrum from dimmer 8, the size that changes relay lens 82 effective clear apertures through electric variable diaphragm 81 reaches the purpose of adjusting the spectrum output power; After process relay lens 82 converges; In the outgoing optical fiber that effectively spectrum is integrated, in the integrating sphere 10 of emergent light fibre array 9 with adjusted spectral transmissions of 168 outgoing optical fiber compositions, the inwall of integrating sphere 10 is high irreflexive equal and coating; The spectrum of 168 optical fiber outputs is mixed again, form uniform spectra from the outgoing of integrating sphere mouth.Spectral radiance meter 11 is the inner spectral energy distribution curve of monitoring integrating sphere and from the spectral radiance value of integrating sphere mouth outgoing in real time, and manually iris 10 is used for changing the size of uniform area light source.
The utility model use the color dispersion-type optical device with polychromatic light by the wavelength spaced apart and be integrated in the fiber array; The process fiber array is transferred to the spectrum of different wave length in the dimmer respectively; Dimmer is by the logical light quantity of needed each wavelength of spectral energy weight adjustment; Through outgoing optical fiber adjusted spectrum is outputed in the integrating sphere at last and mix, evenly export needed spectral distribution energy from the integrating sphere mouth then.The spectral weight adjustable type spectral simulation device of the utility model has been filled up the blank of the light source of the domestic distribution that can't simulate any optic spectrum line.
Claims (10)
1. spectral weight adjustable type spectral simulation system is characterized in that: said spectral weight adjustable type spectral simulation system comprises light-source system, beam splitting system, light intensity regulating system, spectrum mixing and monitoring system and control system; Said beam splitting system, light intensity regulating system and spectrum mix and monitoring system is set in turn on the emitting light path of light-source system; Said control system is mixed with light-source system, light intensity regulating system and spectrum respectively and is linked to each other with monitoring system.
2. spectral weight adjustable type spectral simulation according to claim 1 system, it is characterized in that: said light-source system comprises xenon source, parabolic concentrator, slit diaphragm and collimation lens; Said xenon source is arranged on by in the formed cavity of parabolic concentrator; Said slit diaphragm and collimation lens are successively set on the emitting light path after the parabolic concentrator mirror reflection.
3. spectral weight adjustable type spectral simulation according to claim 2 system, it is characterized in that: said beam splitting system comprises blazed grating and plus lens; Said blazed grating is arranged on the emitting light path behind the collimation lens; Said plus lens is arranged on the emitting light path of blazed grating.
4. spectral weight adjustable type spectral simulation according to claim 3 system is characterized in that: said light intensity regulating system comprises incident fiber array, dimmer and emergent light fibre array; Said incident optical array is arranged on the emitting light path behind the plus lens, and the incident end of said incident optical array overlaps with the focal plane, picture side of plus lens; Said dimmer is arranged on the emitting light path of incident optical; Said emergent light fibre array is arranged on the emitting light path of dimmer.
5. spectral weight adjustable type spectral simulation according to claim 4 system, it is characterized in that: said dimmer comprises electric variable diaphragm and relay lens; Said electric variable diaphragm and relay lens are successively set on the emitting light path behind the incident optical array.
6. according to claim 4 or 5 described spectral weight adjustable type spectral simulation systems, it is characterized in that: said spectrum mixes with monitoring system and comprises integrating sphere, spectral radiance meter probe and manual iris; Said integrating sphere is arranged on the emitting light path of emergent light fibre array; Said spectral radiance meter probe is arranged on the integrating sphere inwall; Said manual iris is arranged on the exit of integrating sphere.
7. spectral weight adjustable type spectral simulation according to claim 4 system, it is characterized in that: said control system comprises xenon lamp controller, dimmer controller and spectral radiance meter controller; Said xenon lamp controller links to each other with xenon source; Said dimmer controller dimmer links to each other; Said spectral radiance meter controller links to each other with integrating sphere and is used to keep watch on the spectral radiance value and the spectral distribution curve of the output of integrating sphere.
8. spectral weight adjustable type spectral simulation according to claim 7 system, it is characterized in that: said relay lens is that bore is that Φ 8mm, focal length are the lens of 5mm.
9. spectral weight adjustable type spectral simulation according to claim 8 system, it is characterized in that: said slit diaphragm is a rectangular aperture, the size of said rectangular aperture is 1mm * 4mm; Said collimation lens is that bore is that Φ 50mm, focal length are the lens of 150mm; The grating constant of said blazed grating is 3.33 * 10-3mm, and blaze wavelength is 0.5 μ m, and blazing angle is 4.3 °, and effectively portraying area is 64mm * 64mm; Said plus lens is that bore is Φ 100mm, and focal length is the lens of 300mm.
10. spectral weight adjustable type spectral simulation according to claim 9 system, it is characterized in that: said incident optical array comprises 168 optical fiber; All optical fiber of said incident optical array divide 4 rows to arrange by regular hexagon; The simple optical fiber diameter of said incident optical array is Ф 1.5mm, and the core diameter of said incident optical array is Ф 1.0mm; Said emergent light fibre array comprises 168 optical fiber, and the simple optical fiber diameter of said emergent light fibre array is Φ 2mm, and the core diameter of said emergent light fibre array is Ф 1.5mm.
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| CN2012200184976U CN202471390U (en) | 2012-01-16 | 2012-01-16 | Spectrum simulation system with adjustable spectrum weight |
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| CN2012200184976U CN202471390U (en) | 2012-01-16 | 2012-01-16 | Spectrum simulation system with adjustable spectrum weight |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103018010A (en) * | 2012-11-30 | 2013-04-03 | 北京振兴计量测试研究所 | Light source spectrum modulating device |
| CN103207063A (en) * | 2012-01-16 | 2013-07-17 | 中国科学院西安光学精密机械研究所 | Spectrum weight adjustable spectrum simulation system |
| CN109442240A (en) * | 2018-10-19 | 2019-03-08 | 南京理工大学 | A kind of area source of the adjustable simulation Night Sky Spectra of spectrum |
| CN111586914A (en) * | 2020-05-18 | 2020-08-25 | 南京理工大学 | Light source device capable of adjusting brightness and simulating specific light source |
-
2012
- 2012-01-16 CN CN2012200184976U patent/CN202471390U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103207063A (en) * | 2012-01-16 | 2013-07-17 | 中国科学院西安光学精密机械研究所 | Spectrum weight adjustable spectrum simulation system |
| CN103207063B (en) * | 2012-01-16 | 2015-12-09 | 中国科学院西安光学精密机械研究所 | Spectrum weight adjustable spectrum simulation system |
| CN103018010A (en) * | 2012-11-30 | 2013-04-03 | 北京振兴计量测试研究所 | Light source spectrum modulating device |
| CN103018010B (en) * | 2012-11-30 | 2016-01-13 | 北京振兴计量测试研究所 | A kind of light source light spectrum modulating device |
| CN109442240A (en) * | 2018-10-19 | 2019-03-08 | 南京理工大学 | A kind of area source of the adjustable simulation Night Sky Spectra of spectrum |
| CN109442240B (en) * | 2018-10-19 | 2020-07-31 | 南京理工大学 | Adjustable spectrum area source for simulating night sky light spectrum |
| CN111586914A (en) * | 2020-05-18 | 2020-08-25 | 南京理工大学 | Light source device capable of adjusting brightness and simulating specific light source |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121003 Termination date: 20160116 |
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| EXPY | Termination of patent right or utility model |