CN103206964A - 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 invention relates to a spectrum weight tunable weak photosites and other simulation systems, which comprises a spectrum weight tunable spectrum simulation subsystem and a large-caliber stray light eliminating star simulator subsystem arranged on an emergent light path of the spectrum weight tunable spectrum simulation subsystem. The invention provides a spectral weight tunable weak light star and other simulation systems with large aperture, stray light elimination and high measurement precision.
Description
Technical field
The invention belongs to the optical detector technology field, relate to a kind of magnitude simulation system, relate 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 very weak or farther apart from the earth celestial body of brightness, 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, the following two kinds of methods of 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, finished surveying calibration and the demarcation of camera.The shortcoming of this kind method is: 1. be subjected to 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. be subjected to atmosphere to the absorption of spectrum, the measuring accuracy of atmospheric density and the influence of the instability of atmospheric transmittance; 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, finish surveying the demarcation of camera detectivity, this kind method is not subjected to the influence of weather condition, implement fairly simple, 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 finish the demarcation task that heavy caliber is surveyed camera; 3. simulated spectra is single, and namely 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, development and design of the present invention a kind of heavy caliber, the parasitic light that disappears, spectral weight is tunable type faint light magnitude simulation system.To satisfy surveying camera high-precision calibrating to detectivity under various curve of spectrum distribution situations.
Summary of the invention
In order to solve existing above-mentioned technical matters in the background technology, the present invention proposes 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.
Technical solution of the present invention is: the invention provides the tunable type faint light of a kind of spectral weight magnitude simulation system, its special character is: type faint light magnitude simulation system that described spectral weight is tunable comprises spectral weight adjustable type spectral simulation subsystem and is arranged on 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; Described 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; Described 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; Described xenon source is arranged on by in the formed cavity of parabolic concentrator; Described slit diaphragm and collimation lens are successively set on the emitting light path after the parabolic concentrator mirror reflection;
Described beam splitting system comprises blazed grating and plus lens; Described blazed grating is arranged on the emitting light path behind the collimation lens; Described 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; Described incident optical array is arranged on the emitting light path behind the plus lens, and the incident end of described incident optical array overlaps with the focal plane, picture side of plus lens; Described dimmer is arranged on the emitting light path of incident optical; Described emergent light fibre array is arranged on the emitting light path of dimmer;
Described spectrum mixes with monitoring system and comprises integrating sphere, spectral radiance meter probe and manual iris; Described integrating sphere is arranged on the emitting light path of emergent light fibre array; Described spectral radiance meter probe is arranged on the integrating sphere inwall; Described manual iris is arranged on the exit of integrating sphere;
Described control system comprises xenon lamp controller, dimmer controller and spectral radiance meter controller; Described xenon lamp controller links to each other with xenon source; Described dimmer controller dimmer links to each other; Described spectral radiance meter controller links to each other with integrating sphere and be used for to monitor spectral radiance value and the spectral distribution curve of the output of integrating sphere.
Above-mentioned dimmer comprises electric variable diaphragm and relay lens; Described 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; Described slit diaphragm is rectangular aperture, and the size of described rectangular aperture is 1mm * 4mm; Described collimation lens is that bore is that Φ 50mm, focal length are the lens of 150mm; The grating constant of described 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; Described plus lens is that bore is Φ 100mm, and focal length is the lens of 300mm; Described incident optical array comprises 168 optical fiber; All optical fiber of described incident optical array divide 4 rows to arrange by regular hexagon; The simple optical fiber diameter of described incident optical array is Φ 1.5mm, and the core diameter of described incident optical array is Φ 1.0mm; Described emergent light fibre array comprises 168 optical fiber, and the simple optical fiber diameter of described emergent light fibre array is Φ 2mm, and the core diameter of described emergent light fibre array is Φ 1.5mm.
Above-mentioned heavy caliber eliminate stray light star simulator subsystem comprises parallel light tube, and described parallel light tube comprises primary mirror, first reflection mirror, catoptron, catoptron and plane mirror for the third time for the second time; Described plane mirror is arranged on the emitting light path of spectral weight adjustable type spectral simulation subsystem; Described second time, catoptron was arranged on plane mirror and for the third time on the reflected light path of catoptron; Described catoptron for the third time and first reflection mirror are arranged on the reflected light path of the catoptron second time; Described primary mirror is arranged on the reflected light path of first reflection mirror; The emergent light of described 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 delustring cover on the diaphragm for eliminating stray light for the second time; Described diaphragm for eliminating stray light is arranged on through catoptron for the third time to the reflected light path of catoptron for the second time.
Above-mentioned eliminate stray light assembly also comprise the first eliminate stray light tube that is arranged on parallel light tube exit portal inside, parallel light tube exit portal outside light shield, be arranged on the outside of principal reflection mirror the second eliminate stray light tube, 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; Described delustring body is that two different delustring tubes of bore are spliced; Described 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 described star tester is arranged on the image planes of parallel light tube.
Advantage of the present invention is:
The difference of type faint light magnitude simulation system that spectral weight provided by the present invention is tunable and traditional magnitude simulator is: the 1. tunable type faint light of the spectral weight magnitude simulation system that proposes of the present invention, in optical system, be provided with secondary image planes, space between secondary image planes and the image planes is surrounded an airtight space, in the secondary image planes diaphragm for eliminating stray light and light shield are installed.Like this, the light beam that sends from light source, have only the light in effective solid angle can be by 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 present invention, light-source system adopts the tunable type uniform source of light of the curve of spectrum, and this function is by xenon lamp, blazed grating, dimmer and integrating sphere are realized.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 present invention has the following advantages:
1) the tunable type faint light of a kind of spectral weight of the present invention magnitude simulation system: use blazed grating as beam splitter, with plus lens the monochromatic light of various wavelength is incorporated into respectively in the different optical fiber 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 of the present invention magnitude simulation system: 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 of the present invention magnitude simulation system: 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 of the present invention magnitude simulation system: 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 of the present invention magnitude simulation system: 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 of the present invention magnitude simulation system: at the integrating sphere inwall spectral radiance meter probe is installed, can monitors 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 of the present invention magnitude simulation system: 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 of the present invention magnitude simulation system: owing in light path, be provided with the secondary image planes, be provided with diaphragm for eliminating stray light and the light shield of Φ 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 of the present invention magnitude simulation system, because system has high eliminate stray light ability, can simulate 16 stars such as grade and even higher magnitude, solve domestic existing star simulator because system's parasitic light is too big, can't high-precision analog 10 grades above magnitude; Faint light magnitude simulation system of the present invention 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 spectral power distribution situations, so the present invention has 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 provided by the present invention;
Fig. 2 is incident optical array structure enlarged diagram of the present invention;
Fig. 3 is the enlarged diagram of dimmer of the present invention;
Fig. 4 is the enlarged diagram of diaphragm for eliminating stray light of the present invention;
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 of the present invention magnitude simulation system 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, probe 12, dimmer controller 13, spectral radiance meter 14, xenon source controller 15, principal reflection mirror 16, first reflection mirror 17, catoptron 18 for the second time, catoptron 19 for the third time, 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; Parabolic concentrator 2 is arranged on the outside of xenon source 1, slit diaphragm 3 is arranged on the emitting light path of parabolic concentrator 2, collimation lens 4 is arranged on the emitting light path of slit diaphragm 3, and its focus is positioned on the slit diaphragm 4, blazed grating 5 is arranged on the emitting light path of collimation lens 4, make 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 to interfere, thereby the spectrum of different wave length is separated, realize light splitting, 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, the incident end of emergent light fibre array 9 is arranged on the exit portal of dimmer 8, 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, catoptron 18 for the second time, 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, the second eliminate stray light tube 3 arranges in the optical emission exit of star simulator, 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 arranges on the light path of star simulator secondary image planes and an image planes centre, light shield 27 is arranged on outside the exit portal of faint light magnitude simulation system, 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 for spoke brightness value and the spectral distribution of the whole simulation system output of control.
The spectrum that xenon source 1 sends converges on the slit diaphragm 3 through parabolic concentrator 2, after slit diaphragm 3 modulation, forming collimated light beam by collimation lens 4 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 with respect to the emergence angle difference of grating face normal, after converging through plus lens 6 again, interfere in the emission of 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 optical fiber, change the size of relay lens clear aperture by electronic diaphragm 81, realize the adjustment (referring to Fig. 3) of light intensity, light after the adjustment 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, 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 adjust the spectral energy of corresponding wavelength, spectral radiance meter 13 is used for monitoring 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 present invention 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 enters 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 corresponding 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 arranges 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 parasitic light to the influence of 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 with the delustring body that one of the light path formation of secondary image planes and an image planes centre is airtight, practise physiognomy at secondary and a diaphragm for eliminating stray light to be installed and the delustring cover is used for absorbing and blocking parasitic light, effectively simulate light beam and become parallel beam from the outgoing of star simulator exit portal by diaphragm for eliminating stray light and delustring are hood-shaped smoothly.The present invention utilizes said system to realize the eliminate stray light function of faint light magnitude simulation system just.
Concrete principle is as follows:
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, the logical light area of slit diaphragm 3 is 1mm * 4mm, 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, focal length is 150mm, 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, the portrayal face of blazed grating 5 is rectangle, useful area is 64mm * 64mm, so, all luminous energies are all effectively reflected and diffraction, on the direction of diffraction light outgoing, apart from blazed grating 500mm place a focal length being installed is 300mm, and bore is the plus lens 6 of 100mm, according to the characteristic dimension of blazed grating, the focal length of blazing angle and plus lens 6 calculates as can be known, the light wave of 350nm～1000nm is arranged overall width and is about 63mm in 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 converges in plus lens 6 focal planes will be incorporated into respectively in the different optical fiber, 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 Φ 1.5mm, core diameter is Φ 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, each junior unit is controlled the output power of an optical fiber luminous energy separately, 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, effectively in the outgoing optical fiber that spectrum is integrated, 168 outgoing optical fiber are formed in the integrating sphere 10 of the spectral transmissions after emergent light fibre array 9 will be adjusted, the inwall of integrating sphere 10 is high irreflexive equal and coating, the spectrum of 168 optical fiber outputs is mixed again, form uniform spectrum from the outgoing of integrating sphere mouth.Spectral radiance meter 11 is the spectral energy distribution curve of monitoring integrating sphere inside 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, 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, a lot (the diffuse reflections of system's inwall of reason owing to parasitic light formation, scattering, the scattering of optical glass and diffraction by aperture etc.), the distribution of parasitic light can not be by accurately 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 two image planes in light path, and with occulter the light path in the middle of secondary image planes and the image planes is bundled into an airtight space, 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 pool one and the sizable hot spot of light hole in the secondary image planes, shine a following catoptron smoothly, and all the other 99% light that form parasitic lights can be in this airtight space be absorbed by inwall through repeatedly reflection.
The present invention 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 adjusted the logical light quantity of each wavelength by needed spectral energy weight, spectrum after will adjusting by outgoing optical fiber at last outputs in the integrating sphere and mixes, and evenly exports needed spectral distribution energy from the integrating sphere mouth then; On optical system by the secondary image planes are set, and with occulter secondary image planes and image planes are surrounded an airtight space, in the secondary image planes light hole that is of moderate size (diaphragm for eliminating stray light) is set, like this, 1% efficient beam will pool one and the sizable hot spot of light hole in the secondary image planes, shine a following catoptron smoothly, and all the other 99% light that form parasitic lights can be in this airtight space be absorbed by inwall through repeatedly reflection.The tunable type faint light of a kind of spectral weight of the present invention magnitude simulation system, 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 of the present invention magnitude simulation system has very high eliminate stray light ability and the adjustable function of optic spectrum line weight, can realize spectral information that existing star simulator can't the simulated target celestial body and the monochrome information of weak target; Simultaneously, the present invention 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 is characterized in that: type faint light magnitude simulation system that described spectral weight is tunable comprises spectral weight adjustable type spectral simulation subsystem and is arranged on 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, it is characterized in that: described 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; Described 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; Described 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:
Described light-source system comprises xenon source, parabolic concentrator, slit diaphragm and collimation lens; Described xenon source is arranged on by in the formed cavity of parabolic concentrator; Described slit diaphragm and collimation lens are successively set on the emitting light path after the parabolic concentrator mirror reflection;
Described beam splitting system comprises blazed grating and plus lens; Described blazed grating is arranged on the emitting light path behind the collimation lens; Described 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; Described incident optical array is arranged on the emitting light path behind the plus lens, and the incident end of described incident optical array overlaps with the focal plane, picture side of plus lens; Described dimmer is arranged on the emitting light path of incident optical; Described emergent light fibre array is arranged on the emitting light path of dimmer;
Described spectrum mixes with monitoring system and comprises integrating sphere, spectral radiance meter probe and manual iris; Described integrating sphere is arranged on the emitting light path of emergent light fibre array; Described spectral radiance meter probe is arranged on the integrating sphere inwall; Described manual iris is arranged on the exit of integrating sphere;
Described control system comprises xenon lamp controller, dimmer controller and spectral radiance meter controller; Described xenon lamp controller links to each other with xenon source; Described dimmer controller dimmer links to each other; Described spectral radiance meter controller links to each other with integrating sphere and be used for to monitor 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: described dimmer comprises electric variable diaphragm and relay lens; Described 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, it is characterized in that: described relay lens is that bore is that Φ 8mm, focal length are the lens of 5mm; Described slit diaphragm is rectangular aperture, and the size of described rectangular aperture is 1mm * 4mm; Described collimation lens is that bore is that Φ 50mm, focal length are the lens of 150mm; The grating constant of described 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; Described plus lens is that bore is Φ 100mm, and focal length is the lens of 300mm; Described incident optical array comprises 168 optical fiber; All optical fiber of described incident optical array divide 4 rows to arrange by regular hexagon; The simple optical fiber diameter of described incident optical array is Φ 1.5mm, and the core diameter of described incident optical array is Φ 1.0mm; Described emergent light fibre array comprises 168 optical fiber, and the simple optical fiber diameter of described emergent light fibre array is Φ 2mm, and the core diameter of described 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: described heavy caliber eliminate stray light star simulator subsystem comprises parallel light tube, and described parallel light tube comprises primary mirror, first reflection mirror, catoptron, catoptron and plane mirror for the third time for the second time; Described plane mirror is arranged on the emitting light path of spectral weight adjustable type spectral simulation subsystem; Described second time, catoptron was arranged on plane mirror and for the third time on the reflected light path of catoptron; Described catoptron for the third time and first reflection mirror are arranged on the reflected light path of the catoptron second time; Described primary mirror is arranged on the reflected light path of first reflection mirror; The emergent light of described 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, it is characterized in that: described 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: described 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 delustring cover on the diaphragm for eliminating stray light for the second time; Described diaphragm for eliminating stray light is arranged on through catoptron for the third time to the reflected light path of 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: described eliminate stray light assembly also comprise the first eliminate stray light tube that is arranged on parallel light tube exit portal inside, parallel light tube exit portal outside light shield, be arranged on the outside of principal reflection mirror the second eliminate stray light tube, 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; Described delustring body is that two different delustring tubes of bore are spliced; Described 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, it is characterized in that: described heavy caliber eliminate stray light star simulator subsystem also comprises star tester, and described star tester is arranged on the image planes of parallel light tube.
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105629464A (en) * | 2016-02-18 | 2016-06-01 | 中国科学院国家空间科学中心 | Diffraction-limiting imaging pseudo star source simulation system based on single reflector |
| 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 |
| CN106289323A (en) * | 2016-08-31 | 2017-01-04 | 上海航天控制技术研究所 | The optical texture frock of the anti-Stray Light Test of star sensor and method of testing |
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| CN108224235A (en) * | 2018-01-04 | 2018-06-29 | 北京环境特性研究所 | Lighting device |
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| CN110044345A (en) * | 2019-05-07 | 2019-07-23 | 西安中科微星光电科技有限公司 | More asterisms emulate precision positioning device |
| CN110056842A (en) * | 2019-06-06 | 2019-07-26 | 中国科学院长春光学精密机械与物理研究所 | A kind of single star simulator and its light source |
| CN110793917A (en) * | 2018-08-02 | 2020-02-14 | 宰体有限公司 | Slit light source and visual inspection device including the same |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5206499A (en) * | 1989-06-22 | 1993-04-27 | Northrop Corporation | Strapdown stellar sensor and holographic multiple field of view telescope therefor |
| CN1502524A (en) * | 2002-11-26 | 2004-06-09 | 中国科学院光电技术研究所 | Star sensor light shield and design method thereof |
| CN101165544A (en) * | 2006-10-19 | 2008-04-23 | 中国科学院西安光学精密机械研究所 | High-precision star simulator |
| CN102116926A (en) * | 2009-12-31 | 2011-07-06 | 北京控制工程研究所 | Imaging structure of fixed star sensor |
| CN202471089U (en) * | 2012-01-16 | 2012-10-03 | 中国科学院西安光学精密机械研究所 | Spectrum weight tunable weak light star simulation system |
-
2012
- 2012-01-16 CN CN201210012829.4A patent/CN103206964B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5206499A (en) * | 1989-06-22 | 1993-04-27 | Northrop Corporation | Strapdown stellar sensor and holographic multiple field of view telescope therefor |
| CN1502524A (en) * | 2002-11-26 | 2004-06-09 | 中国科学院光电技术研究所 | Star sensor light shield and design method thereof |
| CN101165544A (en) * | 2006-10-19 | 2008-04-23 | 中国科学院西安光学精密机械研究所 | High-precision star simulator |
| CN102116926A (en) * | 2009-12-31 | 2011-07-06 | 北京控制工程研究所 | Imaging structure of fixed star sensor |
| CN202471089U (en) * | 2012-01-16 | 2012-10-03 | 中国科学院西安光学精密机械研究所 | Spectrum weight tunable weak light star simulation system |
Non-Patent Citations (2)
| Title |
|---|
| 徐亮等: "弱光紫外星模拟器的研制", 《中国光学》 * |
| 闫亚东等: "单星模拟器杂散光抑制分析", 《光电工程》 * |
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| CN108224235A (en) * | 2018-01-04 | 2018-06-29 | 北京环境特性研究所 | Lighting device |
| CN110793917A (en) * | 2018-08-02 | 2020-02-14 | 宰体有限公司 | Slit light source and visual inspection device including the same |
| CN109578937A (en) * | 2018-12-25 | 2019-04-05 | 赛尔富电子有限公司 | A kind of lighting system glare filter |
| CN109578937B (en) * | 2018-12-25 | 2024-05-10 | 赛尔富电子有限公司 | Anti-glare cover of lighting system |
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