CN103454072A - Stray light coefficient and point source transmittance composite test method and system - Google Patents
Stray light coefficient and point source transmittance composite test method and system Download PDFInfo
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Abstract
The invention relates to a method and a system for compositely testing a veiling glare coefficient and a point source transmittance, which can save cost to a greater extent. The method debugs the positions of the collimating mirror in the first system and the second system in advance, and moves the collimating mirror to the marked position in the first system when measuring the stray light coefficient; when measuring the point source transmittance, the same collimating mirror is moved to the location of the mark in the second system. The system comprises a first system for measuring the veiling glare coefficient and a second system for measuring the point source transmittance, wherein the first system and the second system share the same collimating reflector. The invention creates a novel off-axis reflector mechanism, greatly saves the test cost, and realizes the accurate and comprehensive test of the stray light inhibition capability of the optical part of the large-caliber long-focus camera by the cooperation of the light source system, the acquisition system and the like.
Description
Technical field
The invention belongs to the optical detection field, relate to a kind of coefficient of stray light cheaply and point source transmitance composite test method and system, relate in particular to a kind of laboratory for there is coefficient of stray light test and point source transmission measurement simultaneously, a set of high precision of foundation, combined type, method of testing and system cheaply.
Background technology
In recent years, development along with high sensitivity, low detection threshold detector, people just become possibility to the detection of deep space weak target, and the inhibition ability of optical system parasitic light will directly have influence on the detection of weak target, in order to seek better to suppress the technology of parasitic light, optic test is essential, and comprehensive, the high-precision checkout equipment that optical system parasitic light inhibition ability is tested of a kind of energy is just ready to appear.
Stray light emission refers in optical system and is spread in lip-deep other non-target of detector (or imaging) (or non-imaging) light radiation energy except target (or imaging light), and the target light beta radiation energy that arrives detector through improper light path.The terrestrial space optical system is owing to working in space, and all types of target background complexity is changeful, the intense radiation source is arranged, work under bad environment outside the visual field for optical system.Simultaneously, the detected target signal is very faint again, these intense radiations usually exceed several orders of magnitude than institute's detection of a target radiation intensity, and through the diffraction in optical system aperture, and the scattering of structure and optical element surface, reflection arrive image planes detector formation parasitic light.The reason that it produces is intricate, not only relevant with technique, the material of manufacturing optical system, also relevant with aberration characteristic, diffraction phenomena, target signature, it obviously reduces camera contrast and modulation transfer function, whole image planes level reduces, sharpness degenerates, and even forms the veiling glare spot, when serious, echo signal is flooded fully by the stray light emission noise.The reason that parasitic light produces mainly contains 3: the scattering of optical system visual field external radiation, optical system internal radiation and imaging light.
Current in the development of various camera spaces, the method for testing of parasitic light has two kinds, and a kind of is to adopt parasitic light coefficient in integration sphere light source system, heavy caliber collimating mirror, blackspot target and detector measurement viewing field of camera, estimates the camera veiling glare and suppresses ability.Another kind is to adopt the outer point source transmitance PST (Point Source Transmittance) of higher source luminance, heavy caliber collimating mirror, turntable and detector measurement viewing field of camera, estimates parasitic light and suppresses ability.For weak target detection for camera, not only reach the intense radiation light shield surface that is subject to bright celestial body sunshine, ground vapour, starlight, aurora etc. outside visual field and produce target contrast and the image quality decline that veiling glare causes, and constantly entered in visual field in certain imaging by sunshine, gas light and moonlight, the target contrast that the veiling glare produced through minute surface, lens barrel and detector surface scattering causes and image quality descend.Therefore, should estimate the impact of veiling glare in visual field to this class camera, the impact that also will measure veiling glare outside visual field.
When traditional blackspot method is tested parasitic light, consider that the veiling glare of transmission-type collimator objective generation can be introduced considerable influence to test result, use and substantially do not introduce veiling glare from axle parabolic type catoptron, can effectively address the above problem.During the point source transmission measurement, also need to use collimator objective.Research shows, it is very faint that heavy caliber is surveyed the camera detection of a target, the camera that for example bore is Ф 500mm, focal length 5m, and limited detective magnitude can reach 15 stars such as grade, and this class camera is needing many kinds of measures aspect the parasitic light inhibition.The colimated light system bore needed during Stray Light Test must be greater than tested camera, and a bore 1m left and right, the cost of the off-axis reflection colimated light system of focal length 30m left and right is up to more than 1,000 ten thousand yuan, and the cost of system primary mirror approaches 80% of system synthesis basis, if purchase separately necessary collimator objective by above-mentioned two kinds of methods, original equipment cost and costliness thereof, can't bear, so, the development of the test laboratories such as scientific research institutions, enterprises and institutions and the raising of ability will be had a strong impact on.
Summary of the invention
In order to solve the above-mentioned technical matters existed in background technology, the invention provides a kind of combined type parasitic light and point source transmission measurement method and system that can be cost-saving largely.
Technical solution of the present invention is:
Coefficient of stray light and point source transmitance composite test method, its special character is, comprises the following steps:
1] debug out position a the mark of the collimating mirror of the first system for surveying coefficient of stray light; Debug out position b mark for the collimating mirror of the second system of measuring point source transmitance;
2] the first system and second system share a collimating mirror, when measuring coefficient of stray light, collimating mirror are moved to the position a of mark in the first system; When measuring the point source transmitance, same collimating mirror is moved to the position b of mark in second system.
Between position a and position b, slide rail is set, collimating mirror comprises large-caliber off-axis parabolic lens and the roller mated with slide rail, and the large-caliber off-axis parabolic lens is placed on slide rail by roller.
After collimating mirror being moved to the position a of mark in the first system, coefficient of stray light is to measure like this:
1] integration sphere light source system in the first system provides the uniform area light source of 2 π solid angles for test;
2] at optical axis and the integration sphere light source system inwall intersection point place of collimating mirror, black hole is installed, the selection principle of black hole dimension is: black hole imaging diameter d on tested optical system is 1/5～1/10 of tested optical system linear field L;
3] at tested optical system focal plane place, use acquisition system to carry out illuminance measurement, iris in acquisition system is positioned at the center of black Kong Suocheng focal image, the diameter of iris is 1/5～1/10 of black aperture aberration diameter, and the illuminance of the black aperture aberration of acquisition system collection is E
black;
4] the black hole in integration sphere light source system is replaced with to blank, the blank coating is identical with the integration sphere light source system inside coating, uses acquisition system to gather the illuminance E of blank imaging
in vain;
5] according to formula η=E
black/ E
in vain* the 100% coefficient of stray light η that calculates tested optical system.
After collimating mirror being moved to the position b of mark in second system, the point source transmitance is to measure like this:
1] laser instrument illuminates asterism unit, colimated light system focal plane place, and colimated light system sends collimated light beam; Colimated light system comprises collimating mirror and secondary mirror, and secondary mirror, collimating mirror are successively set on the emitting light path of laser instrument behind the asterism unit, and tested optical system is placed on the emitting light path of collimating mirror;
2] use acquisition system to gather the illuminance E at tested optical system entrance pupil place
entrance pupil;
3] the mobile collection system makes it to be positioned at tested optical system focal plane place, makes acquisition system, tested optical system, colimated light system coaxial, and tested optical system is rotated to the θ angle; Acquisition system gathers the now illuminance E of optical system focal plane place
θ;
4] according to formula PST=E
θ/ E
entrance pupilcalculate under different field angle the point source transmitance PST of tested optical system.
Coefficient of stray light and point source transmitance composite test system, its special character is, comprise the first system for surveying coefficient of stray light and for the second system of measuring point source transmitance, the first system comprises integration sphere light source system and collimating mirror, second system comprises collimating mirror and secondary mirror, and described the first system and second system share same collimating mirror; When measuring coefficient of stray light, collimating mirror is positioned at the opening part of integration sphere light source system, and when measuring the point source transmitance, collimating mirror is positioned on the emitting light path of secondary mirror.
Be provided with slide rail between the position that the position of the first system placement collimating mirror and second system are placed collimating mirror; Described collimating mirror comprises large-caliber off-axis parabolic lens and the roller mated with slide rail.
Above-mentioned composite test system also comprises for the large-caliber off-axis parabolic lens being fixed on to the locating device of test position.
Above-mentioned the first system comprises integration sphere light source system, collimating mirror, acquisition system, control system, data processing unit, display unit; Collimating mirror is arranged on the opening part of integration sphere light source system, and tested optical system is arranged on the light-emitting window place of integration sphere light source system; The output terminal of tested optical system is connected with acquisition system; Control system is connected with integration sphere light source system, acquisition system, data processing unit and display unit respectively.
Above-mentioned second system comprises laser instrument, asterism unit, colimated light system, turntable, acquisition system, control system, data processing unit, display unit; The asterism unit is arranged between laser instrument and colimated light system and, on the focal plane in colimated light system, colimated light system comprises collimating mirror, secondary mirror; Secondary mirror, collimating mirror are successively set on the emitting light path of laser instrument behind the asterism unit; Tested optical system is arranged on the emitting light path after the collimating mirror reflection, and turntable is arranged on tested optical system below, and the output terminal of tested optical system is connected with acquisition system; Control system is connected with laser instrument, collimating mirror, turntable, acquisition system, data processing unit and display unit respectively.
Above-mentioned the first system and second system share a set of acquisition system, control system, data processing unit and display unit.
Advantage of the present invention is:
(1) the present invention innovate first formula use the motor driven collimating mirror, by the cooperation of light-source system, acquisition system etc., realized to heavy caliber, long-focus camera optics parts parasitic light accurately, measure comprehensively.Solve traditional Stray Light Test equipment purchasing expense costliness, tested incomplete limitation, greatly the reduction of degree equipment cost, testing apparatus with above-mentioned Ф 1m clear aperture, can save the equipment purchasing expense of at least 1,000 ten thousand yuan, be highly suitable for and promote in the engineering application and use.
(2) motor driven catoptron of the present invention be equipped with can with the smooth roller contacted of slide rail, the motor driven catoptron is the motion of automobile in coefficient of stray light test, point source transmission measurement process, before and after motion is moving, the face shape that can guarantee the off axis reflector mirror does not change, and can not exert an influence to measuring accuracy.
(3) the present invention for the motor driven catoptron is provided with detent mechanism accurately, is enough to guarantee that the collimation of integration sphere light source system and colimated light system light beam is better than 5 on slide rail ", thus can not affect test result.
(4) low-cost coefficient of stray light of the present invention and point source transmitance composite test system can complete the measurement of point source transmitance outside the measurement of coefficient of stray light in the optical system visual field and visual field, can contain the test that the optical system parasitic light suppresses ability comprehensively.
(5) low-cost coefficient of stray light of the present invention and point source transmitance composite test system, the coefficient of stray light measuring accuracy can reach 0.5%, and point source transmission measurement precision can reach 10
-6.
(6) low-cost coefficient of stray light of the present invention and point source transmitance composite test system, the light source in integration sphere light source system is selected many pieces of halogen tungsten lamps, xenon lamp, can simulate the colour temperature of 3000K～6500K.
(7) low-cost coefficient of stray light of the present invention and point source transmitance composite test system, select high power laser, can improve the measuring accuracy of point source transmitance.Laser wavelength is selected 650nm, 2.2 μ m, 10.6 μ m, can meet the testing requirement of visible, medium-wave infrared, long wave infrared region.
(8) low-cost coefficient of stray light of the present invention and point source transmitance composite test system, it is 1m that colimated light system is selected bore, the motor driven off axis reflector mirror (paraboloidal mirror) that focal length is 30m, spectral range and laser wavelength coupling, can cover point source transmission measurement visible, infrared band.
(9) low-cost coefficient of stray light of the present invention and point source transmitance composite test system, at colimated light system outgoing window, place is equipped with iris, the bore of colimated light system outgoing beam can be adjusted according to the clear aperture size of the tested optical system of difference, to meet the needs of different cameral test.
(10) low-cost coefficient of stray light of the present invention and point source transmitance composite test system, the spectra collection system has been used integrating sphere harvester structure, can eliminate the impact on test result that the photoelectric detection equipment such as photomultiplier is introduced due to the difference of incident angle of light.
(11) low-cost coefficient of stray light of the present invention and point source transmitance composite test system, the spectra collection system has been used photomultiplier, and responsiveness is high, noise is low, can meet the demand of point source transmission measurement precision.
The accompanying drawing explanation
Fig. 1 is structural representation of the present invention;
Wherein: 1-halogen tungsten lamp, xenon lamp; 2-changeable type black and white plug; 3-ox horn mechanism; The 4-laser instrument; 5-asterism unit; 6-collimation off axis reflector mirror; 7-large-caliber off-axis parabolic lens; The 9-secondary mirror; 10-high precision slide rail; The tested optical system of 11-; The 12-turntable; 13-integrating sphere harvester; The 14-iris; 15 photomultipliers; The 16-integration sphere light source system; The 17-colimated light system; The 18-acquisition system; The 19-data processing unit; The 20-display unit; The 21-control system.
Embodiment
Referring to Fig. 1, the invention provides a kind of coefficient of stray light cheaply and point source transmitance composite test method, comprise the following steps,
1] debug out position a the mark of the collimating mirror of the first system for surveying coefficient of stray light; Debug out position b mark for the collimating mirror of the second system of measuring point source transmitance;
2] the first system and second system share a collimating mirror, and collimating mirror preferably collimates off axis reflector mirror 6 when measuring coefficient of stray light, collimating mirror is moved to the position a of mark in the first system; When measuring the point source transmitance, same collimating mirror is moved to the position b of mark in second system.
Preferably, between position a and position b, high-precision slide rail is set, collimating mirror comprises large-caliber off-axis parabolic lens and the roller mated with slide rail, and the large-caliber off-axis parabolic lens is placed on slide rail by roller.Collimating mirror can be electronic control, and the motor driven collimating mirror, can be also manually to control.
After collimating mirror being moved to the position a of mark in the first system, coefficient of stray light is specifically measured like this:
1] integration sphere light source system in the first system provides the uniform area light source of 2 π solid angles for test;
2] at optical axis and the integration sphere light source system inwall intersection point place of collimating mirror, black hole is installed, the selection principle of black hole dimension is: black hole imaging diameter d on tested optical system is 1/5～1/10 of tested optical system linear field L;
3] at tested optical system focal plane place, use acquisition system to carry out illuminance measurement, iris in acquisition system is positioned at the center of black Kong Suocheng focal image, the diameter of iris is 1/5～1/10 of black aperture aberration diameter, and the illuminance of the black aperture aberration of acquisition system collection is E
black;
4] the black hole in integration sphere light source system is replaced with to blank, the blank coating is identical with the integration sphere light source system inside coating, uses acquisition system to gather the illuminance E of blank imaging
in vain;
5] according to formula η=E
black/ E
in vain* the 100% coefficient of stray light η that calculates tested optical system.
After collimating mirror being moved to the position b of mark in second system, the point source transmitance is specifically measured like this:
1] laser instrument illuminates asterism unit, colimated light system focal plane place, and colimated light system sends collimated light beam; Colimated light system comprises collimating mirror and secondary mirror, and secondary mirror, collimating mirror are successively set on the emitting light path of laser instrument behind the asterism unit;
2] use acquisition system to gather the illuminance E at tested optical system entrance pupil place
entrance pupil;
3] the mobile collection system makes it to be positioned at tested optical system focal plane place, makes acquisition system, tested optical system, colimated light system coaxial, and tested optical system is rotated to the θ angle; Acquisition system gathers the now illuminance E of optical system focal plane place
θ;
4] according to formula PST=E
θ/ E
entrance pupilcalculate under different field angle the point source transmitance PST of tested optical system.
Referring to Fig. 1, the invention provides a kind of coefficient of stray light cheaply and point source transmitance composite test system, comprise the first system for surveying coefficient of stray light and for the second system of measuring point source transmitance, the first system comprises integration sphere light source system and collimating mirror etc., second system comprises collimating mirror and secondary mirror etc., and described the first system and second system share same collimating mirror; When measuring coefficient of stray light, collimating mirror is positioned at the opening part of integration sphere light source system, and when measuring the point source transmitance, collimating mirror is positioned on the emitting light path of secondary mirror.
The first system includes but not limited to the system be comprised of following part, and the first system comprises integration sphere light source system, acquisition system, control system, data processing unit, display unit.
Integration sphere light source system can adopt existing system, comprise many pieces of halogen tungsten lamps, xenon lamp 1, changeable type black and white plug 2, ox horn mechanism 3, collimating mirror, halogen tungsten lamp, xenon lamp are uniformly distributed on the integration sphere light source system sphere inner wall, changeable type black and white plug is positioned at the position of focal plane of collimating mirror, and ox horn mechanism is positioned at black and white plug rear end, integration sphere light source system spheroid outside; Described collimating mirror is arranged on the opening part of integration sphere light source system 16.The diameter of integration sphere light source system is Ф 10m, and the light-emitting window opening diameter is Ф 1m, and in 90% bore, surface uniformity is better than 98%, and the angle homogeneity is better than 95%.Tested optical system 11 is arranged on the light-emitting window place of integration sphere light source system 16; The output terminal of tested optical system 11 is connected with acquisition system 18; Described control system 21 is connected with integration sphere light source system 16, acquisition system 18, data processing unit 19 and display unit 20 respectively.
When coefficient of stray light is measured, the unlatching number that xenon lamp, halogen tungsten lamp in integration sphere light source system are set according to demand realizes the adjustment of integration sphere light source system output brightness.
Second system includes but not limited to the system be comprised of following part, and second system comprises laser instrument, asterism unit, colimated light system, turntable, acquisition system, control system, data processing unit, display unit.Asterism unit 5 is arranged between laser instrument 4 and colimated light system 17 and, on the focal plane in colimated light system, colimated light system 17 is the off-axis reflection optical system, comprises collimation off axis reflector mirror 6, secondary mirror 9; Secondary mirror, collimating mirror are successively set on the emitting light path of laser instrument behind the asterism unit; Tested optical system is arranged on the emitting light path after collimating mirror reflection, and turntable 12 is arranged on tested optical system 11 belows, carries tested optical system and guarantees that it realizes rotating in the horizontal direction; The output terminal of tested optical system 11 is connected with acquisition system 18; Control system 21 is connected with laser instrument 4, collimating mirror, turntable 12, acquisition system 18, data processing unit 19 and display unit 20 respectively.
The focal length of above-mentioned colimated light system is 30m, and bore is Ф 1m, and spectral range can cover as seen, near infrared and LONG WAVE INFRARED.
Above-mentioned acquisition system 18 comprises integration sphere light source system formula harvester 13, iris 14 and photomultiplier 15; Iris 14 is positioned at tested optical system 11 focal plane places, and iris 14, photomultiplier 15 lay respectively on integration sphere light source system formula harvester 13 sidewalls.
Above-mentioned control system 21, data processing unit 19 and display unit 20 all are packaged in computing machine.
In coefficient of stray light and point source transmitance difference measuring process, the first system and second system share a collimating mirror, and cost can be saved at least 1,000 ten thousand yuan, also can share a set of acquisition system, control system, data processing unit, display unit.
Preferably, for guaranteeing the beam collimation of integration sphere light source system and colimated light system, high-precision slide rail is set between integration sphere light source system and colimated light system, can makes extremely both allocations of collimating mirror precise motion.Collimating mirror comprises large-caliber off-axis parabolic lens and the roller mated with slide rail, roller is arranged at the below of large-caliber off-axis parabolic lens, roller contacts with slide rail is smooth, this roller can guarantee the stable motion on slide rail of large-caliber off-axis parabolic lens, produce hardly vibration, can the face shape of large-caliber off-axis parabolic lens not exerted an influence.
Preferably, the composite test system also comprises for the large-caliber off-axis parabolic lens being fixed on to the locating device of test position.
Asterism unit 5 is comprised of asterism target target plate.
The present invention has caught the marrow of coefficient of stray light test and point source transmission measurement cleverly, by the in-depth analysis to test process, found out and a set ofly can guarantee measuring accuracy, can save to greatest extent again the scheme of testing apparatus acquisition cost, and thought according to this, designed this composite test system.
Whether the Inspiration Sources of above-mentioned design is the engineering experience passed on from generation to generation, in the engineering application, will carry out full test to development equipment, in order to each performance parameter of determining equipment, can satisfy the demands.Comprehensively index test, need a large amount of test macros to support.The high precision measurement system purchase the expense that will inevitably improve project, in order to solve above contradiction, under the prerequisite of not deleting test index, seek the general character of index of correlation test, selection, combined type, test macro cheaply, just become indispensable part in the engineering application.
The present invention is according to above thought, rely on the motor driven collimating mirror, creationary coefficient of stray light test and point source transmission measurement are unified, under the cooperation of high precision slide rail and pulley, guarantee the exact position in two kinds of tests from the axle collimating mirror, on the basis that does not reduce original measuring accuracy, greatly saved the expense of equipment purchasing, thisly in this system invention process deep-cut the mentality of designing that cost falls in general character, power, worth quilt is promoted and is used for reference.This system also is highly suitable in the engineering application and directly implements.
Claims (10)
1. coefficient of stray light and point source transmitance composite test method, is characterized in that, comprises the following steps:
1] debug out position a the mark of the collimating mirror of the first system for surveying coefficient of stray light; Debug out position b mark for the collimating mirror of the second system of measuring point source transmitance;
2] the first system and second system share a collimating mirror, when measuring coefficient of stray light, collimating mirror are moved to the position a of mark in the first system; When measuring the point source transmitance, same collimating mirror is moved to the position b of mark in second system.
2. coefficient of stray light according to claim 1 and point source transmitance composite test method, it is characterized in that, between position a and position b, slide rail is set, collimating mirror comprises large-caliber off-axis parabolic lens and the roller mated with slide rail, and the large-caliber off-axis parabolic lens is placed on slide rail by roller.
3. coefficient of stray light according to claim 1 and point source transmitance composite test method, its special character is, after collimating mirror being moved to the position a of mark in the first system, coefficient of stray light is to measure like this:
1] integration sphere light source system in the first system provides the uniform area light source of 2 π solid angles for test;
2] at optical axis and the integration sphere light source system inwall intersection point place of collimating mirror, black hole is installed, the selection principle of black hole dimension is: black hole imaging diameter d on tested optical system is 1/5～1/10 of tested optical system linear field L;
3] at tested optical system focal plane place, use acquisition system to carry out illuminance measurement, iris in acquisition system is positioned at the center of black Kong Suocheng focal image, the diameter of iris is 1/5～1/10 of black aperture aberration diameter, and the illuminance of the black aperture aberration of acquisition system collection is E
black;
4] the black hole in integration sphere light source system is replaced with to blank, the blank coating is identical with the integration sphere light source system inside coating, uses acquisition system to gather the illuminance E of blank imaging
in vain;
5] according to formula η=E
black/ E
in vain* the 100% coefficient of stray light η that calculates tested optical system.
4. according to the described coefficient of stray light of claim 1 or 3 and point source transmitance composite test method, its special character is, after collimating mirror being moved to the position b of mark in second system, the point source transmitance is to measure like this:
1] laser instrument illuminates asterism unit, colimated light system focal plane place, and colimated light system sends collimated light beam; Colimated light system comprises collimating mirror and secondary mirror, and secondary mirror, collimating mirror are successively set on the emitting light path of laser instrument behind the asterism unit, and tested optical system is placed on the emitting light path of collimating mirror;
2] use acquisition system to gather the illuminance E at tested optical system entrance pupil place
entrance pupil;
3] the mobile collection system makes it to be positioned at tested optical system focal plane place, makes acquisition system, tested optical system, colimated light system coaxial, and tested optical system is rotated to the θ angle; Acquisition system gathers the now illuminance E of optical system focal plane place
θ;
4] according to formula PST=E
θ/ E
entrance pupilcalculate under different field angle the point source transmitance PST of tested optical system.
5. coefficient of stray light and point source transmitance composite test system, it is characterized in that, comprise the first system for surveying coefficient of stray light and for the second system of measuring point source transmitance, the first system comprises integration sphere light source system and collimating mirror, second system comprises collimating mirror and secondary mirror, and described the first system and second system share same collimating mirror; When measuring coefficient of stray light, collimating mirror is positioned at the opening part of integration sphere light source system, and when measuring the point source transmitance, collimating mirror is positioned on the emitting light path of secondary mirror.
6. coefficient of stray light according to claim 5 and point source transmitance composite test system, is characterized in that, between the position that the position of described the first system placement collimating mirror and second system are placed collimating mirror, is provided with slide rail; Described collimating mirror comprises large-caliber off-axis parabolic lens and the roller mated with slide rail.
7. coefficient of stray light according to claim 6 and point source transmitance composite test system, is characterized in that, described composite test system also comprises for the large-caliber off-axis parabolic lens being fixed on to the locating device of test position.
8. according to claim 5 or 6 or 7 described coefficient of stray light and point source transmitance composite test system, it is characterized in that, the first system comprises integration sphere light source system, collimating mirror, acquisition system, control system, data processing unit, display unit; Collimating mirror is arranged on the opening part of integration sphere light source system, and tested optical system is arranged on the light-emitting window place of integration sphere light source system; The output terminal of tested optical system is connected with acquisition system; Control system is connected with integration sphere light source system, acquisition system, data processing unit and display unit respectively.
9. coefficient of stray light according to claim 8 and point source transmitance composite test system, is characterized in that, second system comprises laser instrument, asterism unit, colimated light system, turntable, acquisition system, control system, data processing unit, display unit; The asterism unit is arranged between laser instrument and colimated light system and, on the focal plane in colimated light system, colimated light system comprises collimating mirror, secondary mirror; Secondary mirror, collimating mirror are successively set on the emitting light path of laser instrument behind the asterism unit; Tested optical system is arranged on the emitting light path after the collimating mirror reflection, and turntable is arranged on tested optical system below, and the output terminal of tested optical system is connected with acquisition system; Control system is connected with laser instrument, collimating mirror, turntable, acquisition system, data processing unit and display unit respectively.
10. coefficient of stray light according to claim 9 and point source transmitance composite test system, is characterized in that, the first system and second system share a set of acquisition system, control system, data processing unit and display unit.
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