CN202471089U - Spectrum weight tunable weak light star simulation system - Google Patents
Spectrum weight tunable weak light star simulation system Download PDFInfo
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Abstract
The utility model relates to a simulation system such as tunable weak light star of spectrum weight, this system include the adjustable type spectrum simulation subsystem of spectrum weight and set up the heavy-calibre of the adjustable type spectrum simulation subsystem of spectrum weight on the emergent light path and disappear miscellaneous light star simulator subsystem. The utility model provides a large-diameter, eliminate stray light and the high simulation system such as tunable weak light star of spectrum weight of measurement accuracy.
Description
Technical field
The utility model belongs to the optical detector technology field, relates to a kind of magnitude simulation system, relates in particular to the tunable type faint light of the spectral weight magnitude simulation system of a kind of heavy caliber, eliminate stray light.
Background technology
In carrying out survey of deep space and astronomical sight; In order to detect the very weak or celestial body farther of brightness apart from the earth; Need some highly sensitive detection cameras of development, and this detection camera detectivity is very strong, domestic also do not have effective standard test equipment to go to demarcate its detectivity.Detection camera for routine; Two kinds of methods below the domestic common usefulness are demarcated surveying the camera detectivity: a kind of is in away from the remote mountains in city, the fixed star of generally acknowledged in the world known magnitude to be taken; Then the data that collect are handled, accomplished surveying the calibration and the demarcation of camera.The shortcoming of this kind method is: 1. receive the influence of natural conditions and weather, wait for tens days sometimes continuously and also not necessarily wait until the weather that satisfies experiment condition; 2. receive the absorption of atmosphere, the measuring accuracy of atmospheric density and the influence of the instability of atmospheric transmittance to spectrum; 3. owing to the inhomogeneous absorption of atmosphere to steller radiation spectrum, the spectral distribution that makes the detection camera receive is different with celestial body actual emanations spectral distribution; 4. to the weak light detection camera of high detectivity, because the scattering of atmosphere produces parasitic light, make that surveying the camera background brightens, weak target information is submerged in the dark background; Another kind of scaling method is with star simulator simulation infinite distance asterism in the laboratory; Completion is to surveying the demarcation of camera detectivity; This kind method does not receive the influence of weather condition; Implement fairly simplely, but there are many shortcomings equally in this method: 1. because the star simulator self-stray light is difficult to eliminate, can't simulate the higher magnitude of magnitude; 2. at present domestic star simulator effective aperture is less, can not accomplish the demarcation task that heavy caliber is surveyed camera; 3. simulated spectra is single, and promptly the spoke brightness of celestial body can only be simulated in the laboratory, can not simulate the radiation spectrum distribution situation of celestial body, causes surveying camera calibration not accurate enough.
So, should consider that to the demarcation of surveying the camera detectivity parasitic light to the flooding of weak target information, also will consider to simulate the calibration result that does not match and lead to errors of asterism spectrum and actual steller radiation spectrum.In order to solve many shortcomings that domestic demarcation of present stage surveys the camera detectivity with not enough, the utility model development and design a kind of heavy caliber, the parasitic light that disappears, spectral weight is tunable type faint light magnitude simulation system.To satisfy to surveying camera high-precision calibrating to detectivity under various curve of spectrum distribution situations.
The utility model content
In order to solve existing above-mentioned technical matters in the background technology, the utility model provides a kind of heavy caliber, parasitic light and the high tunable type faint light of the spectral weight magnitude simulation system of measuring accuracy disappear.
The technical solution of the utility model is: the utility model provides the tunable type faint light of a kind of spectral weight magnitude simulation system, and its special character is: type faint light magnitude simulation system that said spectral weight is tunable comprises spectral weight adjustable type spectral simulation subsystem and is arranged on the heavy caliber eliminate stray light star simulator subsystem on the spectral weight adjustable type spectral simulation subsystem emitting light path.
Above-mentioned spectral weight adjustable type spectral simulation subsystem 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;
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; The 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;
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;
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.
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 relay lens is that bore is that Φ 8mm, focal length are the lens of 5mm; Said 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, 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 Ф 100mm, and focal length is the lens of 300mm; 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.
Above-mentioned heavy caliber eliminate stray light star simulator subsystem comprises parallel light tube, and said parallel light tube comprises primary mirror, first reflection mirror, catoptron, catoptron and plane mirror for the third time for the second time; Said plane mirror is arranged on the emitting light path of spectral weight adjustable type spectral simulation subsystem; Said second time, catoptron was arranged on plane mirror and for the third time on the reflected light path of catoptron; Said catoptron for the third time and first reflection mirror are arranged on the reflected light path of the catoptron second time; Said primary mirror is arranged on the reflected light path of first reflection mirror; The emergent light of said spectral weight adjustable type spectral simulation subsystem successively through plane mirror, for the second time catoptron, for the third time catoptron, catoptron, first reflection mirror and primary mirror reflect away for the second time.
Above-mentioned heavy caliber eliminate stray light star simulator subsystem also comprises the eliminate stray light assembly that is arranged on parallel light tube inside.
Above-mentioned eliminate stray light assembly comprises and is arranged on catoptron for the third time and the diaphragm for eliminating stray light between the catoptron and be arranged on the delustring cover on the diaphragm for eliminating stray light for the second time; Said diaphragm for eliminating stray light is arranged on the reflected light path of catoptron for the third time to catoptron for the second time.
Above-mentioned eliminate stray light assembly also comprises the second eliminate stray light tube that is arranged on the outside light shield of the first inner eliminate stray light tube of parallel light tube exit portal, parallel light tube exit portal, is arranged on the outside of principal reflection mirror, be arranged on the 3rd eliminate stray light tube in the first reflection mirror outside and be arranged on catoptron for the second time and the delustring body on the light path in the middle of the catoptron for the third time; Said delustring body is that two different delustring tubes of bore are spliced; Said diaphragm for eliminating stray light is the light hole of Φ 1mm.
Above-mentioned heavy caliber eliminate stray light star simulator subsystem also comprises star tester, and said star tester is arranged on the image planes of parallel light tube.
The utility model has the advantages that:
The difference of type faint light magnitude simulation system that the spectral weight that the utility model provided is tunable and traditional magnitude simulator is: the 1. tunable type faint light of the spectral weight magnitude simulation system that proposes of the utility model; In optical system, be provided with secondary image planes; Space between secondary image planes and the image planes is surrounded an airtight space, diaphragm for eliminating stray light and light shield are installed on the secondary image planes.Like this; The light beam that sends from light source; Have only the light in effective solid angle can be through light shield and from the diaphragm for eliminating stray light outgoing; And the light beam beyond effective solid angle that light source sends is all blocked by light shield and diaphragm for eliminating stray light, thereby has fundamentally solved the shortcoming that traditional star simulator parasitic light can't be eliminated fully; 2. the tunable type faint light of the spectral weight magnitude simulation system that proposes of the utility model, light-source system adopts the tunable type uniform source of light of the curve of spectrum, and this function is through xenon lamp, blazed grating, dimmer and integrating sphere realization.Compare with traditional star simulator, this light-source system can be simulated the radiation spectral line of any celestial body, has avoided because the demarcation that simulation spectral line and actual celestial body spectral line error are brought is inaccurate.Particularly, the utlity model has following advantage:
1) the tunable type faint light of a kind of spectral weight magnitude simulation 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 tunable type faint light of a kind of spectral weight magnitude simulation 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 tunable type faint light of a kind of spectral weight magnitude simulation 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 tunable type faint light of a kind of spectral weight magnitude simulation 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 tunable type faint light of a kind of spectral weight magnitude simulation 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 tunable type faint light of a kind of spectral weight magnitude simulation 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 tunable type faint light of a kind of spectral weight magnitude simulation system of the utility model: in the integrating sphere exit manual iris is installed, can changes the size of radiating surface very easily.
8) the tunable type faint light of a kind of spectral weight magnitude simulation system of the utility model: owing in light path, be provided with the secondary image planes; Be provided with diaphragm for eliminating stray light and the light shield of Ф 1mm at secondary image planes place; And system also is provided with 3 delustring tubes and 1 delustring body, and the eliminate stray light device can effectively block the parasitic light of system.
The tunable type faint light of a kind of spectral weight magnitude simulation system of the utility model; Because system has high eliminate stray light ability; Can simulate 16 stars such as grade and even higher magnitude; Solved domestic existing star simulator because system's parasitic light is too big, can't high-precision analog 10 grades above magnitude; The faint light magnitude simulation system of the utility model can provide the uniform area light source of different spectral weight as requested simultaneously; Domesticly can only do light source with xenon lamp or halogen tungsten lamp at present; Simulated spectra is single; Can't satisfy celestial body and survey the staking-out work of camera under different SED situation, so the utility model has been filled up the domestic blank that can't simulate any steller radiation spectral line.
Description of drawings
Fig. 1 is the structural representation of system that the utility model provides;
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;
Fig. 4 is the enlarged diagram of the diaphragm for eliminating stray light that adopts of the utility model;
The 1-xenon source; The 2-parabolic concentrator; The 3-slit diaphragm; The 4-collimation lens; The 5-blazed grating; The 6-plus lens; 7-incident optical array; The 8-dimmer; 81-electric variable diaphragm; The 82-relay lens; 9-emergent light fibre array; The 10-integrating sphere; The manual iris of 11-; The 12-probe; 13-dimmer controller; The 14-spectral radiance meter; 15-xenon source controller; The 16-principal reflection mirror; 17-first reflection mirror; 18-is catoptron for the second time; 19-is catoptron for the third time; The 20-plane mirror; The 21-diaphragm for eliminating stray light; 22-delustring cover; The 23-first delustring tube; The 24-second delustring tube; 25-the 3rd delustring tube; 26-delustring body; The 27-light shield; The 28-star tester.
Embodiment
Referring to Fig. 1; The tunable type faint light of a kind of spectral weight magnitude simulation system 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, manually iris 11, probe 12, dimmer controller 13, spectral radiance meter 14, xenon source controller 15, principal reflection mirror 16, first reflection mirror 17, catoptron 18, catoptron 19, plane mirror 20, diaphragm for eliminating stray light 21, delustring cover 22, the first delustring tube 23, the second delustring tube 24, the 3rd delustring tube 25, delustring body 26, light shield 27, star tester 28 for the third time for the second time; 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 4, 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; Probe 12 is arranged on the inwall of integrating sphere 10, principal reflection mirror 16 is arranged on the emitting light path of faint light magnitude simulation system, first reflection mirror 17, for the second time catoptron 18, catoptron 19 and plane mirror 20 are arranged on the light path between parallel light tube primary mirror 16 and the focal plane for the third time, plane mirror 20 is used for the system light path of turning back; Diaphragm for eliminating stray light 21 is arranged on the secondary image planes of star simulator; Delustring cover 22 is arranged on the outside (referring to Fig. 4) of diaphragm for eliminating stray light 21, and the second eliminate stray light tube 3 is provided with in the optical emission exit of star simulator, and the second eliminate stray light tube 4 is in the outside of principal reflection mirror 16; The second eliminate stray light tube 5 is arranged on the outside of catoptron 18 for the second time; Delustring body 26 is provided with on the light path of star simulator secondary image planes and an image planes centre, and light shield 27 is arranged on outside the exit portal of faint light magnitude simulation system, and star tester 28 is arranged on the focal plane of star simulator; Dimmer controller 13, spectral radiance meter 14 and xenon lamp controller 15 are arranged on the outside of system, are 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 with respect to the emergence angle of grating face normal, after converging through plus lens 6 again; Emission is interfered on the focal plane of plus lens 6; Form colored interference fringe, incident optical array 7 is collected the spectral energy of different wave length and is transferred to dimmer 8 in the different fibers, changes the size of relay lens clear aperture through electronic diaphragm 81; Realize the adjustment (referring to Fig. 3) of light intensity; Adjusted light converges in the emergent light fibre array 9 through relay lens 82, is transferred to integrating sphere 10 through emergent light fibre array 9 again, in the diffuse reflection of integrating sphere 10 inwalls; The light wave of various wavelength is mixed again, export from the integrating sphere mouth.Manually iris 11 is used for changing the size of outgoing 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 13 is used for keeping watch on the spectral radiance value and the spectral distribution curve of integrating sphere 10 outputs, and xenon source controller 14 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.
The spectrum of xenon lamp emission illuminates star tester from the outgoing of integrating sphere exit portal after said system is carried out the spectrum adjustment after; Reflection through plane mirror gets into star simulator; Finally form the parallel beam outgoing from the star simulator exit portal; Because the light beam solid angle that the integrating sphere light source sends is far longer than the pairing solid angle of F# of parallel light tube; So the luminous energy overwhelming majority that light source sends can not be simulated the luminous energy that the infinite distance asterism sends; And become the parasitic light harmful to the star simulator system through the diffuse reflection of system's inwall, and existing star simulator just is provided with the device that some block parasitic light in internal system, can not effectively stop parasitic light from system's exit portal outgoing.In order fundamentally to solve the influence of parasitic light to system's magnitude simulation precision; This has proposed a kind of new star simulator optical system structure; In traditional parallel light tube light path, increase secondary image planes; And it is one of the light path formation of secondary image planes and an image planes centre is airtight with the delustring body; A diaphragm for eliminating stray light is installed on secondary is practised physiognomy is used for absorbing and blocking parasitic light, effectively simulate light beam and pass through smoothly that diaphragm for eliminating stray light and delustring are hood-shaped to become parallel beam from the outgoing of star simulator exit portal with the delustring cover.The said system of the utility model utilizing just realizes the eliminate stray light function of faint light magnitude simulation system.
Concrete principle is following:
1. the tunable realization principle of spectral weight
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 portrayal 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; Like this, the homogeneous beam that on plus lens 6 focal planes, converges will be incorporated into respectively in the different fibers, and incident optical array 7 comprises 168 optical fiber altogether; Divide 4 rows to arrange (referring to Fig. 2) by regular hexagon; 42 of every rows, the external diameter of simple optical fiber is Ф 1.5mm, 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, 168 outgoing optical fiber are formed in the integrating sphere 10 of emergent light fibre array 9 with adjusted spectral transmissions, and 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.
2. the eliminate stray light function realizes principle
After the light that the integrating sphere light source sends with 2 π (Sr) solid angle illuminated star tester, the luminous energy that asterism gives off covered the space of 2 π (Sr) solid angle, and the luminous energy in this 2 π (Sr) solid angle space distributes by cosine radiator, and total light flux is π LS.The F#=10 of general star simulator system, the aperture angle U=2.86 of corresponding optical system °, the solid angle that surrounds of the emergent pupil focusing place asterism light source of star simulator system is 0.031 (Sr); The luminous flux that comprises is 0.031LS, and the total light flux of asterism radiation is π LS, can calculate; It is real useful luminous energy that the luminous energy that gives off from asterism only has the energy less than 1%; And all the other energy exposure of 99% form parasitic light to the simulation system inwall, owing to reason a lot (diffuse reflection of system's inwall, the scatterings of parasitic light formation; The scattering of optical glass and diffraction by aperture etc.), the distribution of parasitic light can not be by accurate trace and calculating.Traditional star simulator is just installed light shield around each optical glass of system, and system's inwall is done dye black the processing, but this can not effectively eliminate the parasitic light of system.The star simulator of the design's development adds one two image planes in light path; And the light path in the middle of secondary image planes and the image planes is bundled into an airtight space with occulter; Go out to install a light hole that is of moderate size (diaphragm for eliminating stray light) in the secondary image planes; Like this; 1% efficient beam will on the secondary image planes, pool one with the sizable hot spot of light hole, shine a following catoptron smoothly, and all the other 99% form parasitic lights light can be in this airtight space be absorbed by inwall through repeatedly reflection.
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; On optical system through the secondary image planes are set; And secondary image planes and image planes are surrounded an airtight space with occulter; A light hole that is of moderate size (diaphragm for eliminating stray light) is set on the secondary image planes, and like this, 1% efficient beam will pool one and the sizable hot spot of light hole on the secondary image planes; Shine a following catoptron smoothly, and all the other 99% form parasitic lights light can be in this airtight space be absorbed by inwall through repeatedly reflection.The tunable type faint light of a kind of spectral weight magnitude simulation system of the utility model, solved traditional star simulator since parasitic light too greatly can't the faint asterism target of high-precision analog a difficult problem; Filled up the blank of the light source of the domestic distribution that can't simulate any optic spectrum line.
The tunable type faint light of a kind of spectral weight magnitude simulation system of the utility model has very high eliminate stray light ability and the adjustable function of optic spectrum line weight, can realize the spectral information that existing star simulator can't the simulated target celestial body and the monochrome information of weak target; Simultaneously, the utility model also can be used for testing other optical property index (focal length, visual field, MTF, visual resolution, blur circle barycenter etc.) of camera.
Claims (10)
1. the tunable type faint light of spectral weight magnitude simulation system, it is characterized in that: type faint light magnitude simulation system that said spectral weight is tunable comprises spectral weight adjustable type spectral simulation subsystem and is arranged on the heavy caliber eliminate stray light star simulator subsystem on the spectral weight adjustable type spectral simulation subsystem emitting light path.
2. the tunable type faint light of spectral weight according to claim 1 magnitude simulation system is characterized in that: said spectral weight adjustable type spectral simulation subsystem 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.
3. the tunable type faint light of spectral weight according to claim 2 magnitude simulation system 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;
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; The 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;
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;
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.
4. the tunable type faint light of spectral weight according to claim 3 magnitude simulation 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.
5. the tunable type faint light of spectral weight according to claim 4 magnitude simulation system is characterized in that: said relay lens is that bore is that Φ 8mm, focal length are the lens of 5mm; Said 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; 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 Φ 1.5mm.
6. according to the tunable type faint light of the described spectral weight of the arbitrary claim of claim 1-5 magnitude simulation system; It is characterized in that: said heavy caliber eliminate stray light star simulator subsystem comprises parallel light tube, and said parallel light tube comprises primary mirror, first reflection mirror, catoptron, catoptron and plane mirror for the third time for the second time; Said plane mirror is arranged on the emitting light path of spectral weight adjustable type spectral simulation subsystem; Said second time, catoptron was arranged on plane mirror and for the third time on the reflected light path of catoptron; Said catoptron for the third time and first reflection mirror are arranged on the reflected light path of the catoptron second time; Said primary mirror is arranged on the reflected light path of first reflection mirror; The emergent light of said spectral weight adjustable type spectral simulation subsystem successively through plane mirror, for the second time catoptron, for the third time catoptron, catoptron, first reflection mirror and primary mirror reflect away for the second time.
7. the tunable type faint light of spectral weight according to claim 6 magnitude simulation system is characterized in that: said heavy caliber eliminate stray light star simulator subsystem also comprises the eliminate stray light assembly that is arranged on parallel light tube inside.
8. the tunable type faint light of spectral weight according to claim 7 magnitude simulation system is characterized in that: said eliminate stray light assembly comprises and is arranged on catoptron for the third time and the diaphragm for eliminating stray light between the catoptron and be arranged on the delustring cover on the diaphragm for eliminating stray light for the second time; Said diaphragm for eliminating stray light is arranged on the reflected light path of catoptron for the third time to catoptron for the second time.
9. the tunable type faint light of spectral weight according to claim 8 magnitude simulation system is characterized in that: said eliminate stray light assembly also comprises the second eliminate stray light tube that is arranged on the outside light shield of the first inner eliminate stray light tube of parallel light tube exit portal, parallel light tube exit portal, is arranged on the outside of principal reflection mirror, be arranged on the 3rd eliminate stray light tube in the first reflection mirror outside and be arranged on catoptron for the second time and the delustring body on the light path in the middle of the catoptron for the third time; Said delustring body is that two different delustring tubes of bore are spliced; Said diaphragm for eliminating stray light is the light hole of Φ 1mm.
10. the tunable type faint light of spectral weight according to claim 9 magnitude simulation system is characterized in that: said heavy caliber eliminate stray light star simulator subsystem also comprises star tester, and said star tester is arranged on the image planes of parallel light tube.
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| CN2012200184995U CN202471089U (en) | 2012-01-16 | 2012-01-16 | Spectrum weight tunable weak light star simulation system |
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| CN2012200184995U CN202471089U (en) | 2012-01-16 | 2012-01-16 | Spectrum weight tunable weak light star simulation system |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102917243A (en) * | 2012-10-22 | 2013-02-06 | 中国科学院西安光学精密机械研究所 | Color image quality evaluation and detection system of space camera |
| CN103047998A (en) * | 2012-12-12 | 2013-04-17 | 中国科学院西安光学精密机械研究所 | Detection capability detection system and detection method for space optical system |
| CN103206964A (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 tunable weak light star simulation system |
| CN103308072A (en) * | 2013-05-30 | 2013-09-18 | 中国科学院长春光学精密机械与物理研究所 | Programmed control spectrum radiation calibrating system for visible integrating sphere |
| CN106017508A (en) * | 2016-05-26 | 2016-10-12 | 长春理工大学 | Waveform-continuously-adjustable broad spectrum uniform light source for star simulator |
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- 2012-01-16 CN CN2012200184995U patent/CN202471089U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103206964A (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 tunable weak light star simulation system |
| CN103206964B (en) * | 2012-01-16 | 2015-05-20 | 中国科学院西安光学精密机械研究所 | Spectrum weight tunable weak light star simulation system |
| CN102917243A (en) * | 2012-10-22 | 2013-02-06 | 中国科学院西安光学精密机械研究所 | Color image quality evaluation and detection system of space camera |
| CN103047998A (en) * | 2012-12-12 | 2013-04-17 | 中国科学院西安光学精密机械研究所 | Detection capability detection system and detection method for space optical system |
| CN103047998B (en) * | 2012-12-12 | 2016-09-21 | 中国科学院西安光学精密机械研究所 | Detection capability detection method for space optical system |
| CN103308072A (en) * | 2013-05-30 | 2013-09-18 | 中国科学院长春光学精密机械与物理研究所 | Programmed control spectrum radiation calibrating system for visible integrating sphere |
| CN106017508A (en) * | 2016-05-26 | 2016-10-12 | 长春理工大学 | Waveform-continuously-adjustable broad spectrum uniform light source for star simulator |
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