CN102927996A - High-precision dynamic imaging simulator for space target - Google Patents
High-precision dynamic imaging simulator for space target Download PDFInfo
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- CN102927996A CN102927996A CN2012104092713A CN201210409271A CN102927996A CN 102927996 A CN102927996 A CN 102927996A CN 2012104092713 A CN2012104092713 A CN 2012104092713A CN 201210409271 A CN201210409271 A CN 201210409271A CN 102927996 A CN102927996 A CN 102927996A
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Abstract
The invention discloses a high-precision dynamic imaging simulator for a space target. The high-precision dynamic imaging simulator comprises two half-field display systems, an optical splicing system and a projection imaging system, wherein each of the half-field display systems comprises a display content generation system, a display driving system, a backlight illumination system, liquid crystal light valves and a liquid crystal light valve control system; the optical splicing system comprises a splicing lens group, a prism supporting structure and a mirror supporting structure flange; the projection imaging system comprises an object space telecentric projection lens, a lens mounting flange, a lens group fixing flange, a distance adjusting barrel and a locking device; the high-precision design of a large field of view is completed by the object space telecentric projection lens through matching of a small aperture and a short exit pupil distance, two liquid crystal light valves are fixedly arranged on splicing surfaces of the splicing lens groups, and through layout of effective display surfaces of the two liquid crystal light valves, the two liquid crystal light valves are spliced to a full field of view through the splicing lens groups; and the backlight illumination system and the liquid crystal light valves are integrally designed. According to the invention, the high-precision dynamic target simulation can be realized at a variable distance.
Description
Technical field
The invention belongs to the physical simulation technical field, relate to a kind of high precision extraterrestrial target dynamic imaging analogue means.
Background technology
Space dynamic object analogue technique is the needed Imaging physics simulation objectives of research space optics sensor analog machine, mainly by the method for optical imagery, simulates target real time position and other physical attribute that sensor is surveyed.The purposes of general simulated target image space is more common.
Extraterrestrial target is divided into relative static target and relative motion target, relative static target employing fixedly target can realize by optical system imaging, and the simulation of dynamic object generally will adopt display device to the target dynamic imaging, by optical system the dynamic image that becomes is projected required separation distance.
The kind of Dynamic Star simulator is more, and wherein simulating visual field and precision is topmost index, also is the leading indicator of difference simulator performance, and other technical indicator is about the same such as all kinds of star simulators such as the dynamic range of simulation, contrast, turnover rates.So-called large visual field refers to the visual field that 6 ° * 6 ° (1 ° of tolerance+) are above, and high precision refers to that single star subtended angle is less than 15 " (tolerance+1 "), what the present invention relates to refers to large visual field, a high-precision class.
The scheme aspect of Dynamic Star simulator at home and abroad:
External less about the report of dynamic goal simulator, a kind of stellar field simulator has been pointed out in one piece of report of U.S. Marshall space research center in 1985, this simulator is made of light source, collimating apparatus, optical fiber optical device, light source is comprised of a plurality of luminous points, the light that each luminous point sends to the collimating apparatus focal plane, is imaged onto infinity by collimating apparatus by fiber optic conduction.
Zhejiang University has delivered one piece of " based on the visible light Optical Target Simulator development of liquid crystal on silicon display technique " article in " Acta Optica " the 5th phase of the 26th volume, discussed a kind of LCOS Display projector simulator with fly-eye illumination system, be characterized in adopting block prism that illumination light is introduced LCOS, adopt the even light of compound eye mirror.
The Wang Zhao of National University of Defense technology chief waits at " Journal of System Simulation " and has delivered " design of star image simulation device and the realization of space-oriented targeted surveillance ", has proposed a kind of extraterrestrial target simulator scheme, directly shows by display.
The employing optical system shadow simulation that above kinetic-simulator has, the direct employing large-sized monitor simulation that has.Adopt the simulator of display device and optical projection technology generally to be subject to display device resolution and the restriction of simulation field angle, be difficult to reach the high-precision analog of target outgoing.
Aspect Dynamic Star simulator simulation visual field and precision:
The star simulator visual field based on DLP that " based on the small-sized star simulator design of the digital light treatment technology " literary composition that " optical precision engineering " delivered in November, 2007 such as Gong Yan proposes is 10.5 ° * 7.5 °, single star subtended angle 40 "; The Dynamic Star simulator visual field that " design of the Dynamic Display System for Star Map in Small-Sized Star Simulator " literary composition that " photoelectric project " delivered in October, 2000 such as Zhang Wenming is mentioned is 8 ° * 6 °, and single star subtended angle is 28 "; The visual field of mentioning the Dynamic Star simulator of developing in the Master's thesis of the Ma Yuanxue of Changchun University of Science and Technology " Optical System Design of Dynamic Star simulator " is 17.7 ° * 13.3 °, single star subtended angle 50 ".The display device that above each star simulator adopts is all about 1000 pixels, therefore the star simulator that belongs to medium accuracy, fail to reach high-precision analog, the resolution that does not reach high-precision main cause and be display device is inadequate, the display device resolution of generally producing at present is all about 1000 pixels, or the strip display device with 2000 * 1000 types, and Dynamic Star simulator generally needs square field of view displays.
Summary of the invention
Technology of the present invention is dealt with problems and is: overcome the deficiencies in the prior art, a kind of high precision extraterrestrial target dynamic imaging analogue means is provided, can realize high precision, the simulation of variable range dynamic object.
Technical solution of the present invention is: a kind of high precision extraterrestrial target dynamic imaging analogue means comprises: two half field-of-view's display systems, optics splicing system, projection imaging system; Wherein each half field-of-view's display system comprises displaying contents generation system, display driving system, backlight illuminating system, liquid crystal light valve, liquid crystal light valve control system and cabinet; The optics splicing system comprises splicing prism group, prism supporting construction, prism supporting construction flange; Projection imaging system comprises object space heart projection lens far away, object space heart projection lens far away mounting flange, adjusts swivel nut and locking device with splicing prism group mounting flange, spacing; Object space heart projection lens far away comprises iris, an arrangement of mirrors sheet, lens barrel, iris and an arrangement of mirrors sheet are installed in lens barrel inside, it is anterior that iris is installed on light beam exit end one arrangement of mirrors sheet, and iris, an arrangement of mirrors sheet, lens barrel three's central symmetry axis is consistent; Object space heart projection lens far away is finished optical design with splicing prism group gang as an optical joint system, object space heart projection lens far away and splicing prism group separately aberration have compensating effect, and when the axial distance between object space heart projection lens far away and the splicing prism group was adjusted in 20mm, the optical joint system should guarantee that variation that imaging MTF compares with design load is in 0.1; Two liquid crystal light valves are fixedly mounted on the Mosaic face of splicing prism group, and the layout of two effective display surfaces of liquid crystal light valve should guarantee to be spliced into a full visual field by two effective display surfaces of liquid crystal light valve of splicing prism group; After liquid crystal light valve was driven by display driving system, the dynamic image that the displaying contents generation system produces was presented on the effective display surface of liquid crystal light valve by the liquid crystal light valve control system; Backlight illuminating system and liquid crystal light valve Integral design, and the lighting condition of liquid crystal light valve work is provided; The prism supporting construction is used for supporting splicing prism group, and guarantees to be fixedly connected with between splicing prism group and the object space heart projection lens far away mounting flange face; The displaying contents of two effective display surfaces of liquid crystal light valve consists of full visual field target by the optics splicing system, is imaged onto the required separation distance place by object space heart projection lens far away; Object space heart projection lens far away mounting flange is positioned on the object space heart projection lens far away lens barrel, is used for object space heart projection lens far away fixing at cabinet; Spacing is adjusted swivel nut and is cooperated with object space heart projection lens far away lens barrel external thread, and keeps moving relative to adjustment between spacing adjustment swivel nut and the object space heart projection lens far away lens barrel external thread; Splicing prism group mounting flange is positioned at spacing and adjusts on the swivel nut, aim at fixing with prism supporting construction flange, by the to axial distance between spacing adjustment swivel nut turn adjustment object space heart projection lens far away and the splicing prism group, two Mosaic faces of splicing prism group are adjusted to place, the needed analogue means of distance to a declared goal focal plane; Locking device is used for the locking that spacing is adjusted swivel nut.
Can relatively adjust along optical axis direction between described optics splicing system and the object space heart projection lens far away.
Described splicing prism group is engaged by two identical isosceles right-angle prism bottom surfaces and consists of, and plates transmissivity on isosceles right-angle prism bottom surface therein and reflectivity is 50% spectro-film; Two Mosaic faces of splicing prism group are positioned on the focal plane of object space heart projection lens far away and splicing prism group association system, and respectively by separately light path projection imaging.
Described object space heart projection lens far away is a small-bore optical system, and pore diameter range is between 1/20～1/10, and the iris of object space heart projection lens far away is positioned at the position of the outside 20mm～30mm of the last optical surface of target outgoing.And design in the past generally is to adopt object lens of large relative aperture (1/2～1/4), and be that emergent pupil is apart from being not less than 50mm, to realize that the analogue means emergent pupil dock with the star sensor entrance pupil, therefore in the past projection lens not only size is large, and be subject to large aperture and greatly visual field limit design difficult quality raising.Adopted little relative aperture on the object space of the present invention heart projection lens far away scheme, and the simulator emergent pupil does not reach the star sensor entrance pupil, but equivalent simulation dynamic object, because it is higher that designing quality is able to because the aperture dwindles, and the employing of small-bore can guarantee still that even without making the analogue means emergent pupil to upper star sensor entrance pupil light beam does not arrive the star sensor image planes in vignetting ground.
Described backlight illuminating system comprises multi-group light-emitting unit, reflection room, even photosphere, astigmatism plate and reflector layer; The multi-group light-emitting unit evenly is installed in the reflection room inside circumference; The reflection room opening surface is installed astigmatism plate, and astigmatism plate scribbles even photosphere towards the one side of reflection room.
The luminescence unit group that the total N group in described multi-group light-emitting unit distributes about Central Symmetry, every group of luminescence unit contains M luminescent device, and N group luminescent device has comprised again the basic sub-symmetric configuration form of n kind, and the group number of sub-symmetric configuration form is not more than N.
Described luminescent device can be lighted, ignition method is: the luminescent device of at every turn lighting should be according to the brightness needs, among n sub-symmetric configuration form, determine that one is as distribution form, respectively select same number of luminescent device to light in the luminescent device respectively organizing of comprising of selected distribution form, the strength control of luminescence unit is no more than n * M level from weak to strong, under the illuminator number of packages same case of lighting between the different distribution forms, many persons of luminescence unit group number distribution form is preferentially selected.
Described reflection room be an opening surface and the effective display surface shape of liquid crystal light valve same size greater than the rectangular aperture chamber of the effective display surface 30% of liquid crystal light valve, inwall scribbles albedo greater than 80% reflector layer.
The present invention's advantage compared with prior art is:
(1) target range simulated of the existing simulator that adopts the display direct modeling is limited, and all simulates infinite distance based on the kinetic-simulator of LCD, has limited the simulator scope of application; Existing high precision scheme directly adopts the display devices such as High Resolution LCD, and is expensive, and buying difficulty on the market adopts the display device such as common LCD again less than high precision, is difficult to improve the ratio of performance to price of analogue means.In order to overcome above problem, the simulation of realize target high precision, low cost and distance variable, the present invention proposes a kind of high precision extraterrestrial target dynamic imaging analogue means, adopt the optics connecting method that two the effective display surface of display device visual fields such as common LCD are pieced together a large visual field that doubles single significant surface, make the display surface after the amalgamation have higher resolution, thereby not only improved simulation precision, also reduced cost, improved the ratio of performance to price; Realized that by spacing adjustment screw bushing structure and locking device the axial distance between object space heart projection lens far away and the splicing prism group changes, and makes the simulated range of target from infinitely changing continuously as far as limited distance.
(2) object space of object space of the present invention heart projection lens far away heart design proposal far away and small-bore scope have guaranteed that relative adjustment along optical axis direction can not cause visual field vignetting outside the axle between optics splicing system and the object space heart projection lens far away, and object space telecentric imaging beam arrangement chief ray is parallel to optical axis, the requirement of favourable reduction liquid crystal light valve illuminating bundle incident angle, thus guarantee on the liquid crystal light valve axle and the edge view field imaging see through homogeneity.
(3) the little relative aperture of the heart projection lens far away of the object space among the present invention and little emergent pupil also are the key factors that improves precision and reduce cost apart from guaranteeing higher optical design quality and less physical dimension.
(4) the bottom surface delustring of splicing prism group of the present invention lacquer played eliminate light disturbance and reduce the bottom surface and the liquid crystal light valve display surface between the effect of ghost image, ghost image is imaging beam when passing through successively each optical surface, because the non-imaging beam imaging that the reflecting surface reflex in transmission plane reflex and the light path produces in the light path.
(5) reflection room backlight among the present invention is that an opening surface is greater than the effective display surface 30% of liquid crystal light valve, be conducive to the full aperture illumination of visual field, liquid crystal light valve edge, inwall scribbles albedo greater than 80% reflectorized material, be conducive to improve the efficiency of light energy utilization of luminescent device, astigmatism plate scribbles even photosphere towards the one side of reflection room, is conducive to illumination uniformity and improves.
(6) optics that proposes of the present invention splices dynamic star analogue means and has solved this problem, and the visual field of embodiment is 8 ° * 8 °, single star subtended angle 15 ", reached high precision.
Description of drawings
Fig. 1 is the structure principle chart of system of the present invention;
Fig. 2 is the structure principle chart of half field-of-view of the present invention display system;
Fig. 3 is object space of the present invention heart projection lens far away and splicing prism group structural drawing;
Fig. 4 is backlight illuminating system structural drawing of the present invention; Its left figure be backlight illuminating system structure A-A to cut-open view, right figure is that backlight illuminating system structure B-B is to cut-open view;
Fig. 5 is object space of the present invention heart projection lens far away and splicing prism group optical joint system architecture layout.
Embodiment
Shown in Fig. 1,2,3,4,5, the embodiment of the invention is comprised of two half field-of-view's display systems, optics splicing system, projection imaging system, cabinet; Wherein each half field-of-view's display system comprises displaying contents generation system, display driving system, backlight illuminating system, liquid crystal light valve, liquid crystal light valve control system and cabinet; The optics splicing system comprises splicing prism group 9, prism supporting construction 8, prism supporting construction flange 11; Projection imaging system comprises object space heart projection lens far away, camera lens mounting flange 4, prism group mounting flange 7, spacing adjustment swivel nut 6 and locking device 5, object space heart projection lens far away is finished optical design with splicing prism group 9 gangs as an optical joint system, object space heart projection lens far away and splicing prism group separately aberration have compensating effect, and when the axial distance between object space heart projection lens far away and the splicing prism group 9 was adjusted in 20mm, association system should guarantee that variation that imaging MTF compares with design load is in 0.1; Two liquid crystal light valves 18 are fixedly mounted on the Mosaic face 10 of splicing prism group 9, and the layout of two liquid crystal light valve 18 effective display surfaces should guarantee to be spliced into a full visual field by 9, two liquid crystal light valves of splicing prism group, 18 effective display surfaces; After liquid crystal light valve 18 was driven by display driving system, the dynamic image that the displaying contents generation system produces was presented on the effective display surface of liquid crystal light valve by the liquid crystal light valve control system; Backlight illuminating system and liquid crystal light valve 18 Integral designs, and the lighting condition of liquid crystal light valve work is provided; Prism supporting construction 8 is used for supporting splicing prism group 9, and guarantees to be fixedly connected with between splicing prism group and the object space heart projection lens far away mounting flange face; The displaying contents of two liquid crystal light valve 18 effective display surfaces consists of full visual field target by the optics splicing system, is imaged onto the required separation distance place by object space heart projection lens far away; Camera lens mounting flange 4 is positioned on the lens barrel 1 of object space heart projection lens far away, is used for object space heart projection lens far away fixing at cabinet; Spacing is adjusted swivel nut 6 and is cooperated with object space heart projection lens far away lens barrel external thread, and keeps moving relative to adjustment between spacing adjustment swivel nut 6 and object space heart projection lens far away lens barrel 1 external thread; Prism group mounting flange 7 is positioned at spacing and adjusts on the swivel nut 6, aim at fixing with prism supporting construction flange 11, by the to axial distance between spacing adjustment swivel nut 6 turns adjustment object space heart projection lens far away and the splicing prism group 9, two Mosaic faces of splicing prism group 9 are adjusted to place, the needed analogue means of distance to a declared goal focal plane; Locking device 5 is used for the locking that spacing is adjusted swivel nut 6.
Two the half field-of-view's display systems, optics splicing system, the projection imaging system that consist of high precision extraterrestrial target dynamic imaging analogue means all are positioned at the inside of cabinet except the displaying contents generation system.The backlight illuminating system of two half field-of-view's display systems and liquid crystal light valve integrated design, and be installed on the prism supporting construction 8 of splicing prism group 9, the display driving system of two half field-of-view's display systems, liquid crystal light valve control system are made one or more circuit board and are installed in the cabinet, the displaying contents generation system of two half field-of-view's display systems can be by 2 computer realization, and every computing machine is connected with separately half field-of-view's display system communication interface respectively.Projection imaging system is fixed in cabinet inside by object space heart projection lens far away mounting flange 4.Half field-of-view's display system communication interface passes the cabinet surface and is fixed on the cabinet, is connected with two computer communications of displaying contents generation system.
The liquid crystal light valve that consists of two half field-of-view's display systems adopts the display device of two 1920 * 1024 specifications, after the optics splicing, do not increase in 1920 direction visual field resolution, become 2048 in 1024 direction visual field resolution, spliced like this display device resolution reaches 1920 * 2048, near the needed square visual field of kinetic-simulator, and reached high resolving power.Dynamic Star simulator in the past is generally all less than 1024 * 1024 side visual fields.
Adjust swivel nut 6 turn adjustment by spacing, so that the to axial distance between object space heart projection lens far away and the splicing prism group 9 is mobile in the 20mm scope, any one position at moving process, object space heart projection lens far away is compared with design load to change with splicing prism group optical joint system MTF and is not more than 0.1, such performance guarantee at simulated range from infinitely as far as the limited distance process, carry out the effective display surface focusing of LCD by the relative motion between object space heart projection lens far away and the splicing prism group, realize blur-free imaging, and the MTF picture element changes in 0.1, can realize changing in image quality the performance of little condition Imitating distance variable.
The object space heart projection lens far away of high precision extraterrestrial target dynamic imaging analogue means is a small-bore optical system, pore diameter range is between 1/20～1/10, the outside that the iris 2 of object space heart projection lens far away is positioned at the last optical surface of target outgoing is not less than the position of 20mm, such as Fig. 3 and shown in Figure 5.Object space heart projection lens far away comprises iris 2, an arrangement of mirrors sheet 3, lens barrel 1, iris 2 and an arrangement of mirrors sheet 3 are installed in lens barrel 1 inside, iris 2 is installed on light beam exit end one arrangement of mirrors sheet 3 front portions, and iris 2, an arrangement of mirrors sheet 3, lens barrel 1 three's central symmetry axis is consistent.
Shown in Figure 3, object space of the present invention heart projection lens far away and splicing prism group structural drawing, lens barrel 1, iris 2, one arrangement of mirrors sheet 3 has consisted of object space heart projection lens far away, camera lens mounting flange 4, locking device 5, spacing is adjusted swivel nut 6, splicing prism group mounting flange 7 has consisted of projection imaging system with object space heart projection lens far away, prism supporting construction 8, splicing prism group 9, mirror supporting construction flange 11 has consisted of the optics splicing system, Mosaic face 10 is the focal plane of object space heart projection lens far away and optics splicing system association system, this face has two, distribute according to the light splitting surface perpendicular direction, in the present embodiment, a Mosaic face is in the back of splicing prism group 9, and another Mosaic face is below splicing prism group 9.Shown in Fig. 4,5, effective display surface of liquid crystal light valve 18 overlaps with Mosaic face 10 in theory, and there is error in actual debuging, and error size should be in the depth of focus of object space heart projection lens far away and optics splicing system association system.Do not increasing perpendicular to paper direction visual field, be spliced into up and down 2 times of single visual field along effective display surface visual field of paper above-below direction liquid crystal light valve 18.Light splitting surface 12 is the dielectric coating series that are plated on the bottom surface of any prism of splicing prism group.After effective display surface splicing of liquid crystal light valve 18 is finished, the target beam that is sent by the effective display surface of splicing prism group 9 back liquid crystal light valves sees through splicing prism group 9 and light splitting surface 12, shine distance to a declared goal through object space first group of optical mirror slip 3 of the heart far away projection lens and iris 2 again, or enter the star sensor entrance pupil.In like manner, after effective display surface splicing of liquid crystal light valve 18 is finished, the target beam that the effective display surface of liquid crystal light valve below splicing prism group 9 sends sees through splicing prism group 9 and reflects through light splitting surface 12, shine distance to a declared goal through object space first group of optical mirror slip 3 of the heart far away projection lens and iris 2 again, or enter the star sensor entrance pupil.Camera lens mounting flange 4 is fixed with cabinet, and threaded adjustment and swivel nut locking device 5 positioning means are arranged between camera lens mounting flange 4 and the lens barrel 1.It is dead that spacing is adjusted between swivel nut 6 and the prism group mounting flange 7, and spacing is adjusted to can be movable relatively between swivel nut 6 and the lens barrel 1 to adjust and also can be passed through locking device 5 locking current locations, to guarantee to obtain the target simulation of distance to a declared goal and the needs of focusing.
As shown in Figure 4, backlight illuminating system of the present invention comprises that multi-group light-emitting unit 13, reflection room 14, even photosphere 15, astigmatism plate 16, reflector layer 17 consist of; Multi-group light-emitting unit 13 evenly is installed in reflection room 14 inside circumferences; Reflection room 14 opening surfaces are installed astigmatism plate 16, and astigmatism plate 16 scribbles even photosphere 17 towards the one side of reflection room 14; Reflection room 14 be an opening surface and the effective display surface shape of liquid crystal light valve same size greater than the rectangular aperture chamber of the effective display surface 30% of liquid crystal light valve, inwall scribbles albedo greater than 80% reflector layer 17.Even photosphere 15 makes the light homogenize of reflection room, and astigmatism plate 16 is inner by sheet material and the coverage of outside surface scattering expansion emergent light.The luminescence unit group that multi-group light-emitting unit 13 total N groups distribute about Central Symmetry, every group of luminescence unit contains M luminescent device, and N group luminescent device has comprised again the basic sub-symmetric configuration form of n kind, and the group number of sub-symmetric configuration form is not more than N.Can partly light luminescent device, ignition method is, the luminescent device of at every turn lighting should be according to the brightness needs, among n sub-symmetric configuration form, determine that one is as distribution form, respectively select same number of luminescent device to light in the luminescent device respectively organizing of comprising of selected distribution form, the strength control of luminescence unit is no more than n * M level from weak to strong, under the illuminator number of packages same case of lighting between the different distribution forms, many persons of luminescence unit group number distribution form is preferentially selected, and mainly more has more the illumination light of penetrating because of the light emitting device group number more even.In the invention process, design 4 groups of light-emitting components, N=4, every group of 5 elements, M=5,4 groups of light-emitting components lay respectively at four jiaos of bottom surfaces, reflective chamber, can 4 groups light simultaneously, also can cornerwise 2 groups light, like this n=2, therefore the brightness degree of backlight illuminating system is adjusted progression and is no more than n * M=10, and when lighting simultaneously for 4 groups, the luminescent device number combinations has 4,8,16,24,28 5 kinds, when lighting simultaneously for 2 groups, the luminescent device number combinations has 2,4,6,8,10 5 kinds, as seen the two all contains 4 and 8 luminescent device quantity, should select 4 of 4 groups of while ignition conditions, 8,16,24,28 5 kinds of combinations, add 2 groups of 2 when lighting simultaneously, 6,10 three kinds of combinations have 8 kinds of strong and weak level time adjustment capabilities.
The content that is not described in detail in the instructions of the present invention belongs to those skilled in the art's known technology.
Claims (8)
1. high precision extraterrestrial target dynamic imaging analogue means is characterized in that comprising: two half field-of-view's display systems, optics splicing system, projection imaging system; Wherein each half field-of-view's display system comprises displaying contents generation system, display driving system, backlight illuminating system, liquid crystal light valve, liquid crystal light valve control system and cabinet; The optics splicing system comprises splicing prism group, prism supporting construction, prism supporting construction flange; Projection imaging system comprises object space heart projection lens far away, camera lens mounting flange, prism group mounting flange, spacing adjustment swivel nut and locking device; Object space heart projection lens far away comprises iris, an arrangement of mirrors sheet, lens barrel, iris and an arrangement of mirrors sheet are installed in lens barrel inside, it is anterior that iris is installed on light beam exit end one arrangement of mirrors sheet, and iris, an arrangement of mirrors sheet, lens barrel three's central symmetry axis is consistent; Object space heart projection lens far away is finished optical design with splicing prism group gang as an optical joint system, and when the axial distance between object space heart projection lens far away and the splicing prism group was adjusted in 20mm, the optical joint system should guarantee that variation that imaging MTF compares with design load is in 0.1; Two liquid crystal light valves are fixedly mounted on the Mosaic face of splicing prism group, and the layout of two effective display surfaces of liquid crystal light valve should guarantee to be spliced into a full visual field by the effective display surface of splicing prism latter two liquid crystal light valve of group; After liquid crystal light valve was driven by display driving system, the dynamic image that the displaying contents generation system produces was presented on the effective display surface of liquid crystal light valve by the liquid crystal light valve control system; Backlight illuminating system and liquid crystal light valve Integral design, and the lighting condition of liquid crystal light valve work is provided; The prism supporting construction is used for supporting splicing prism group, and guarantees to be fixedly connected with between splicing prism group and the object space heart projection lens far away mounting flange face; The displaying contents of two effective display surfaces of liquid crystal light valve consists of full visual field target by the optics splicing system, and is imaged onto the required separation distance place by object space heart projection lens far away; The camera lens mounting flange is positioned on the object space heart projection lens far away lens barrel, is used for object space heart projection lens far away fixing at cabinet; Spacing is adjusted swivel nut and is cooperated with object space heart projection lens far away lens barrel external thread, and keeps moving relative to adjustment between spacing adjustment swivel nut and the object space heart projection lens far away lens barrel external thread; Prism group mounting flange is positioned at spacing and adjusts on the swivel nut, aim at fixing with prism supporting construction flange, by the to axial distance between spacing adjustment swivel nut turn adjustment object space heart projection lens far away and the splicing prism group, two Mosaic faces of splicing prism group are adjusted to place, the needed analogue means of distance to a declared goal focal plane; Locking device is used for the locking that spacing is adjusted swivel nut.
2. high precision extraterrestrial target dynamic imaging analogue means according to claim 1 is characterized in that: can relatively adjust along optical axis direction between described optics splicing system and the object space heart projection lens far away.
3. high precision extraterrestrial target dynamic imaging analogue means according to claim 1, it is characterized in that: described splicing prism group is engaged by two identical isosceles right-angle prism bottom surfaces and consists of, and plates transmissivity on isosceles right-angle prism bottom surface therein and reflectivity is 50% spectro-film; Two Mosaic faces of splicing prism group are positioned on the focal plane of object space heart projection lens far away and splicing prism group association system, and respectively by separately light path projection imaging.
4. high precision extraterrestrial target dynamic imaging analogue means according to claim 1, it is characterized in that: described object space heart projection lens far away is a small-bore optical system, pore diameter range is between 1/20～1/10, and the iris of object space heart projection lens far away is positioned at the position of the outside 20mm～30mm of the last optical surface of target outgoing.
5. high precision extraterrestrial target dynamic imaging analogue means according to claim 1 is characterized in that: described backlight illuminating system comprises multi-group light-emitting unit, reflection room, even photosphere, astigmatism plate and reflector layer; The multi-group light-emitting unit evenly is installed in the reflection room inside circumference; The reflection room opening surface is installed astigmatism plate, and astigmatism plate scribbles even photosphere towards the one side of reflection room.
6. high precision extraterrestrial target dynamic imaging analogue means according to claim 5, it is characterized in that: the luminescence unit group that the total N group in described multi-group light-emitting unit distributes about Central Symmetry, every group of luminescence unit contains M luminescent device, N group luminescent device has comprised again the basic sub-symmetric configuration form of n kind, and the group number of sub-symmetric configuration form is not more than N.
7. high precision extraterrestrial target dynamic imaging analogue means according to claim 6, it is characterized in that: described luminescent device can be lighted, ignition method is: the luminescent device of at every turn lighting should be according to the brightness needs, among n sub-symmetric configuration form, determine that one is as distribution form, respectively select same number of luminescent device to light in the luminescent device respectively organizing of comprising of selected distribution form, the strength control of luminescence unit is no more than n * M level from weak to strong, under the illuminator number of packages same case of lighting between the different distribution forms, many persons of luminescence unit group number distribution form is preferentially selected.
8. high precision extraterrestrial target dynamic imaging analogue means according to claim 5, it is characterized in that: described reflection room be an opening surface and the effective display surface shape of liquid crystal light valve same size greater than the rectangular aperture chamber of the effective display surface 30% of liquid crystal light valve, inwall scribbles albedo greater than 80% reflector layer.
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| CN105716629A (en) * | 2016-02-14 | 2016-06-29 | 长春理工大学 | Split-type high-uniformity star simulator illuminating system |
| CN106842779A (en) * | 2017-01-24 | 2017-06-13 | 深圳晗竣雅科技有限公司 | Multi-disc DMD is imaged the method for improving projection image resolution ratio jointly |
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| CN104457785A (en) * | 2014-07-30 | 2015-03-25 | 长春理工大学 | Dynamic LCOS (liquid crystal on silicon) spliced-type star simulator and ground calibrating device of star sensor |
| CN104457785B (en) * | 2014-07-30 | 2017-09-05 | 长春理工大学 | The dynamic spliced star simulators of LCOS and star sensor ground surface caliberating device |
| CN105716628B (en) * | 2016-02-14 | 2018-06-01 | 长春理工大学 | The continuously adjustable static star simulator of magnitude continuous transformation sky background |
| CN105716628A (en) * | 2016-02-14 | 2016-06-29 | 长春理工大学 | Static star simulator capable of achieving magnitude continuous transformation and sky background continuous adjusting |
| CN105716629A (en) * | 2016-02-14 | 2016-06-29 | 长春理工大学 | Split-type high-uniformity star simulator illuminating system |
| CN105716629B (en) * | 2016-02-14 | 2018-06-01 | 长春理工大学 | Split type high evenness star simulator lighting system |
| CN106842779A (en) * | 2017-01-24 | 2017-06-13 | 深圳晗竣雅科技有限公司 | Multi-disc DMD is imaged the method for improving projection image resolution ratio jointly |
| CN107783307A (en) * | 2017-09-04 | 2018-03-09 | 西安中科微精光子制造科技有限公司 | Spliced optical imaging system |
| CN107783307B (en) * | 2017-09-04 | 2024-05-17 | 西安中科微精光子科技股份有限公司 | Spliced optical imaging system |
| CN110703545A (en) * | 2018-07-09 | 2020-01-17 | 青岛海信激光显示股份有限公司 | Projector |
| CN110703545B (en) * | 2018-07-09 | 2022-02-01 | 青岛海信激光显示股份有限公司 | Projector |
| CN114070401A (en) * | 2021-11-15 | 2022-02-18 | 中铁信安(北京)信息安全技术有限公司 | Physical isolation device and method based on free space laser communication |
| CN114070401B (en) * | 2021-11-15 | 2023-03-24 | 中铁信安(北京)信息安全技术有限公司 | Physical isolation device and method based on free space laser communication |
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