CN205067853U - Big visual field three anti - systems of off -axis - Google Patents
Big visual field three anti - systems of off -axis Download PDFInfo
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- CN205067853U CN205067853U CN201520832985.4U CN201520832985U CN205067853U CN 205067853 U CN205067853 U CN 205067853U CN 201520832985 U CN201520832985 U CN 201520832985U CN 205067853 U CN205067853 U CN 205067853U
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Abstract
The utility model relates to a big visual field three anti - systems of off -axis, including primary mirror, secondary mirror, aperture stop, three mirrors and coke side, the primary mirror is the off -axis hyperboloidal mirror, and the secondary mirror is the convex spherical speculum, and three mirrors are the concave oblate spheroid mirror of off -axis secondary, and female gross rail load on axle of primary mirror and three mirrors is closed to the axis of reference, and aperture stop sets up on the secondary mirror, and female gross rail load on axle of the optical axis of secondary mirror and three mirrors is closed, the target light that comes from infinite distant place gets into three mirrors by inferior mirror reflection through primary mirror reflection late arrival secondary mirror again, and three last mirrors are with image formation by rays to coke side. The utility model provides a big visual field three anti - systems of off -axis design with process, debug between contradiction, the utility model discloses a big visual field three anti - systems of off -axis has adopted a comparatively simple structural style, can realize wide picture formation of image, and wherein the available field of view can reach 12 3.5.
Description
Technical field
The utility model relates to a kind of Large visual angle from axle three reflecting optical system and Method of Adjustment, be mainly used in all kinds of Large visual angle from the anti-system of axle three rapid Design, process, debug.
Background technology
The all kinds of of current research are difficult to from the anti-system of axle three contradiction solving Large visual angle and processing, resetting difficulty, major part system all adopts the high order aspheric surface mirror from axle amount is larger to design, such design all brings a lot of unfavorable factor for later stage optical manufacturing with debuging, be not easy to the rapid shaping of whole system, be unfavorable for the through engineering approaches of project
Large visual angle in the past all adopts convex high order aspheric surface to design from axle three anti-system secondary mirror, and such design is easily for deviser, but for optical manufacturing, detect, debug and all bring sizable difficulty; Wherein the processing of convex aspheric surface is difficult to detect; Meanwhile, the benchmark of off-axis aspheric surface is also difficult to set up, and this is be difficult to operation for system is debug.The utility model mainly launches research around Large visual angle from axle three anti-technology, utilize current conventional means, devise a kind of be convenient to that post-production debugs from the anti-system of axle three, and according to the ingenious property of the design of this system, propose a kind of Method of Adjustment and Computer Aided Assembly Process Planning technology fast.
Summary of the invention
In order to solve Large visual angle from the anti-system of axle three and processing, debug between contradiction, the Large visual angle of the utility model design have employed the comparatively simple version of one from the anti-system of axle three, can realize wide picture imaging, wherein apparent field can reach 12 ° × 3.5 °.
Technical solution of the present utility model:
Large visual angle is from the anti-system of axle three, its special character is: comprise primary mirror, secondary mirror, aperture diaphragm 3, three mirror and focal plane 5, described primary mirror 1 is from axle hyperboloidal mirror 1, described secondary mirror 2 is convex spherical catoptron 2, described three mirrors are from the recessed oblate spheroid mirror 4 of axle secondary, described primary mirror overlaps as reference axis with female axle of three mirrors, and described aperture diaphragm 3 is arranged on secondary mirror, and the optical axis of described secondary mirror overlaps with female axle of three mirrors;
From the target light of infinite point after primary mirror reflects to secondary mirror, then reflected by secondary mirror and enter three mirrors, last three mirrors by image formation by rays to focal plane 5.
Above-mentioned primary mirror and secondary mirror are spaced apart 1145mm, and secondary mirror and three mirrors are spaced apart 1023mm, and three mirror distance focal plane distances are 1400mm, and the angle of the female axle of primary mirror optical axis is 4 °, and secondary mirror optical axis and female axle clamp angle are 0 °, and three mirror optical axises and female axle clamp angle are 1.2 °.
Large visual angle is from the Method of Adjustment of the anti-system of axle three, and its special part processed is: comprise the following steps
1] reference axis is determined:
1.1] crosshair reference point is set up in convex spherical mirror surface, by using surveying instrument adjustment crosshair reference point and convex spherical mirror mirror center superposition, after convex spherical catoptron 2 is installed in system platform, and fix the first autocollimation theodolite 7 in the dead ahead of convex spherical catoptron 2;
1.2] adjust the position of convex spherical catoptron 2 in X-direction and Y-direction, the first autocollimation theodolite 7 is overlapped with the eyepiece crosshair of the first autocollimation theodolite 7 through the autocollimation picture of convex spherical catoptron 2;
1.3] focus on the first autocollimation theodolite 7 to convex spherical catoptron 2 minute surface, adjust the position of convex spherical catoptron 2 in X-direction and Y-direction simultaneously, until make all to overlap with the first autocollimation theodolite eyepiece crosshair through the autocollimation picture of convex spherical catoptron 2 and crosshair reference point, female axle of convex spherical catoptron and the first autocollimation theodolite 7 optical axis coincidence, now the optical axis of the first autocollimation theodolite 7 is coarse adjustment reference axis;
2] Installation and Debugging of primary mirror:
2.1] will be installed in system platform from axle hyperboloidal mirror 1, near the first autocollimation theodolite 7 entrance pupil, set up crosshair benchmark, the optical axis of the first autocollimation theodolite 7 is by crosshair benchmark;
2.2] set up the second autocollimation theodolite 8 in convex spherical catoptron 2 back, remove convex spherical catoptron 2, second autocollimation theodolite 8 and the first autocollimation theodolite 7 is taken aim at mutually simultaneously;
2.3] install primary mirror compensator 10 between the second autocollimation theodolite 8 and the first autocollimation theodolite 7, the optical axis using the second autocollimation theodolite 8 to adjust primary mirror compensator 10 overlaps with coarse adjustment reference axis;
2.4] interferometer 9 to be set up in coarse adjustment reference axis light path and between the second autocollimation theodolite 8 and primary mirror compensator 10, the position of adjustment interferometer 9, makes the laser spot of interferometer 9 outgoing be positioned on coarse adjustment reference axis;
2.5] adjustment from the orientation of axle hyperboloidal mirror 1, pitching, X-direction translation, Y-direction translation and height 5, direction degree of freedom, judged by the interferogram of interferometer 9, make the optical axis coincidence of female axle from axle hyperboloidal mirror 1 and primary mirror compensator 10, namely complete primary mirror adjustment;
3] Installation and Debugging of three mirrors:
3.1] removed by primary mirror compensator, and on the position of primary mirror compensator 10, install three mirror compensators 11, the optical axis using the second autocollimation theodolite 8 to adjust three mirror compensators 11 overlaps with coarse adjustment reference axis; The position of rear adjustment interferometer 9, makes the laser spot of interferometer 9 outgoing be positioned on coarse adjustment reference axis;
3.2] install from the recessed oblate spheroid mirror 3 of axle secondary, rear adjustment from the orientation of the recessed oblate spheroid mirror 3 of axle secondary, pitching, X-direction translation, Y-direction translation and height 5, direction degree of freedom, judged by the interferogram of interferometer 9, until from female axle of axle secondary recessed oblate spheroid mirror 3 and the optical axis coincidence of three mirror compensators 11, namely complete three mirror adjustment;
4] the reset debugging of secondary mirror:
4.1] convex spherical catoptron 2 is arranged in system platform, places standard flat mirror 12 simultaneously, ensure that standard flat mirror overlaps with from axle three anti-system light-emitting window position;
4.2] interferometer 9 is moved to the position of focal plane 5, whether the position of convex spherical catoptron 2 is monitored at initial position by interferometer 9, some interferometer 9 are poor through the picture image quality reflected by standard flat mirror 12 from the emergent light of the anti-system of axle three, the orientation of adjustment convex spherical catoptron 2, until image quality improves, now secondary mirror resets completely;
4.3] remove interferometer 9, standard flat mirror 12, first autocollimation theodolite 7, second autocollimation theodolite 8 and three mirror compensators 11, obtain coarse adjustment from the anti-system of axle three;
5] from the anti-system computer assistant resetting of axle three:
5.1] near focal plane 5, set up accurate adjustment interferometer, and adjust accurate adjustment interferometer, make overlapping from the anti-system focus position of axle three of accurate adjustment interferometer emergent light spot and coarse adjustment;
5.2] accurate adjustment interferometer is made to collect interference fringe, measure the wave aberration from axle three anti-system five visual field of coarse adjustment respectively, the astigmatism of the different visual fields collected by accurate adjustment interferometer, coma, spherical aberration value, as the input of Computer Aided Assembly Process Planning software, calculate system primary mirror and secondary mirror spacing adjustment D by Computer Aided Assembly Process Planning algorithm
zc, secondary mirror and three mirror spacing adjustment D
c3, secondary mirror x direction offset D
xc, secondary mirror y direction offset D
yc, secondary mirror x direction angle of inclination T
xc, secondary mirror y direction angle of inclination T
yc, three mirror x direction offset D
x3, three mirror y direction offset D
y3, three mirror x direction angle of inclination T
x3, three mirror y direction angle of inclination T
y3;
5.3] according to the adjustment amount calculated and direction, respectively 5 degree of freedom directions from secondary mirror in the anti-system of axle three and three mirrors of coarse adjustment are adjusted;
5.4] step 5.2 is performed], until visual field wavefront error meets index request on axle three anti-system 0 optical-axis and outside axle, obtain the Large visual angle of accurate adjustment from the anti-system of axle three.
Step 1.1] in adopt cotton thread set up crosshair reference point in convex spherical mirror surface, step 2.1] in adopt cotton thread near the first autocollimation theodolite 7 entrance pupil, set up crosshair benchmark.
The effect that the utility model has:
1, this Large visual angle is from the anti-system of axle three, utilizes simple specular manner, can realize high picture element, large visual field optical system design;
2, to have version from the anti-system of axle three simple for this Large visual angle, post-production, detection, advantage that resetting difficulty is low;
3, this Large visual angle is from the anti-system of axle three and integration techno logy, be the design feature of convex spherical catoptron cleverly according to secondary mirror, propose a kind of workable, simple and reliable from the anti-integration techno logy of axle three, than in the past from the cycle of debuging, greatly save the time (system in the past needs 1-3 month, and this system only needs 1 time-of-week) from the anti-Method of Adjustment of axle three;
4, this Large visual angle is from the anti-system of axle three and integration techno logy, after coarse adjustment completes, proposes a kind of simple, Computer Aided Assembly Process Planning new technology that feasibility is good first, takes into account the balance of each visual field picture element, can debug fast by guidance system;
5, this Large visual angle is from the anti-system of axle three and integration techno logy, utilizes the characteristic of autocollimation theodolite and spherical mirror autocollimatic, carrys out light modulation axle than ever have higher adjustment accuracy with knife-edge method, and the system that can ensure, after coarse adjustment completes, has higher image quality.
Accompanying drawing explanation
Fig. 1 is that Large visual angle is from the anti-system light path figure of axle three;
Fig. 2 is that Large visual angle is from axle three anti-system reference axis debugging principle figure;
Fig. 3 is that Large visual angle is from axle three anti-system primary mirror debugging principle figure;
Fig. 4 is that Large visual angle is from axle three anti-system three mirror debugging principle figure;
Fig. 5 is that Large visual angle is from the anti-system debug schematic diagram of axle three;
Fig. 6 is Computer Aided Assembly Process Planning schematic flow sheet;
Wherein Reference numeral is: 1-is from axle hyperboloidal mirror, 2-convex spherical catoptron, 3-aperture diaphragm, 4-is from the recessed oblate spheroid mirror of axle secondary, 5-image planes, 6-optical reference axle, 7-first autocollimation theodolite, 8-second autocollimation theodolite, 9-interferometer, 10-primary mirror compensator, 11-tri-mirror compensator, 12-standard flat mirror.
Embodiment
As shown in Figure 1, the Large visual angle of design is from axle hyperboloidal mirror from the anti-system primary mirror 1 of axle three; Secondary mirror is convex spherical catoptron 2; 3 is the aperture diaphragm of system, and it is arranged on secondary mirror 2; Three mirrors are from the recessed oblate spheroid mirror 4 of axle secondary; 5 is system focal plane; 6 is the optical reference axle of system, is female axle of primary mirror 2 and three mirrors 4.From infinite point target light through primary mirror 1 reflect after to secondary mirror 2, then by secondary mirror 2 reflect enter three mirrors 4, last three mirrors by image formation by rays to image planes 5.This version that the utility model adopts, is conducive to the processing of reduction system, resetting difficulty, and debuging when especially secondary mirror adopts coaxial spherical mirror to be optical glass producing and the system integration in later stage all reduces difficulty.Therefore, the convex spherical mirror that the utility model adopts greatly reduces the difficulty of System Implementation.
In addition, the utility model proposes a kind of Method of Adjustment fast, greatly can save the later stage and debug cost and debug the time.System debugs thinking: first set up from the reference axis that axle three is anti-by Large visual angle, then the reference axis by establishing regulates the position of primary mirror, three mirrors successively, finally according to the mutual relationship of primary mirror, three mirrors and secondary mirror, by interferometer, secondary mirror is resetted, can ensure that system has been debug, as shown in Figure 2-5.
The first step: the foundation of reference axis, as shown in Figure 2.
Wherein,
As shown in Figure 2, set up crosshair reference point on convex spherical catoptron 2 (secondary mirror) surface with thin cotton, by using surveying instrument standard crosshair reference point and convex spherical mirror mirror center superposition.Convex spherical catoptron and microscope base are installed in system platform (from axle three anti-system mounting seat platform), the optical axis fixing the first autocollimation theodolite 7, first autocollimation theodolite 7 at 2m place, its dead ahead points to the reference axis (female axle) representing whole system two off-axis aspheric surface catoptrons (primary mirror and secondary mirror).By the position in X-direction and Y-direction of adjustment convex spherical catoptron 2, first autocollimation theodolite 7 is overlapped with eyepiece crosshair through the autocollimation picture of convex spherical catoptron 2, focus on the first autocollimation theodolite 7 to convex spherical mirror mirror, observe the deviation of center of reticule and the first autocollimation theodolite 7 eyepiece crosshair, adjustment convex spherical catoptron is in the position of X-direction and Y-direction, two crosshairs are overlapped, so repeatedly, until make all to overlap with transit eyepiece crosshair through the autocollimation picture of convex spherical catoptron and convex spherical mirror cotton thread crosshair picture.Now, the central shaft central shaft of convex spherical catoptron and female axle are same optical axises) and the first autocollimation theodolite 7 optical axis coincidence, coarse adjustment benchmark is the first autocollimation theodolite 7 optical axis.
Second step: the Installation and Debugging of primary mirror, as shown in Figure 3.
Mainly interferometer 9 and primary mirror compensator 10 is used from debuging of axle hyperboloidal mirror 1 (primary mirror).To be installed on table top from axle hyperboloid 1, crosshair is set up with thin cotton thread near the first autocollimation theodolite 7 entrance pupil, first autocollimation theodolite 7 optical axis passes through center of reticule, second autocollimation theodolite 8 is placed on convex spherical catoptron 2 back, pull down convex spherical catoptron, the second autocollimation theodolite and the second autocollimation theodolite is used to take aim at mutually, by the coarse adjustment datum tool representated by the first autocollimation theodolite optical axis on the second autocollimation theodolite.
Primary mirror compensator is installed in optical system for testing, uses the optical axis of the second autocollimation theodolite accurate adjustment primary mirror compensator to overlap with coarse adjustment reference axis; Set up by interferometer 9 in coarse adjustment reference axis light path, the position of adjustment interferometer 9, makes the laser spot of interferometer 9 outgoing be positioned on coarse adjustment reference axis.
After putting up and debuging light path from axle hyperboloidal mirror 1, adjust from the orientation of axle hyperboloidal mirror 1, pitching, X-direction translation, Y-direction translation and height 5, direction degree of freedom, make the optical axis coincidence of female axle from axle hyperboloidal mirror 1 and primary mirror compensator 10, judged by the interferogram of interferometer 9, namely complete primary mirror adjustment.
3rd step: the Installation and Debugging of three mirrors, as shown in Figure 4.
Wherein, 11-tri-mirror compensator.
Method of Adjustment from axle secondary recessed oblate spheroid mirror 4 (three mirrors) is similar to primary mirror Method of Adjustment.Three mirror compensators 11 are installed in optical system for testing, use the optical axis of the second autocollimation theodolite 8 accurate adjustment three mirror compensator 11 to overlap with coarse adjustment reference axis; Set up by interferometer 9 in coarse adjustment reference axis light path, the position of adjustment interferometer 9, makes the laser spot of interference outgoing be positioned on coarse adjustment benchmark.After putting up and debuging light path from the recessed oblate spheroid mirror of axle secondary, adjust from the orientation of the recessed oblate spheroid mirror of axle secondary, pitching, X-direction translation, Y-direction translation and height 5, direction degree of freedom, make the optical axis coincidence of female axle from axle secondary recessed oblate spheroid mirror and three mirror compensators 11, judged by the interferogram of interferometer 9, namely complete three mirror adjustment.
4th step: the reset debugging of secondary mirror, as shown in Figure 5.
Primary and secondary, three mirrors are placed on the position vertical with emergent light axis after mixing up by system, and ensure that standard flat mirror overlaps with from axle three anti-system light-emitting window position, now whether monitor the position of secondary mirror at initial position by the interferometer 9 of position of focal plane, if it is improper that secondary mirror position is placed, then interferometer is deteriorated through the picture image quality reflected by standard flat mirror from the emergent light of the anti-system of axle three, and then judged the adjustment mode of secondary mirror by the image of interferometer, till secondary mirror resets completely.
Remove additional device, obtain three anti-systems of coarse adjustment;
After installing three mirrors, resetted by convex spherical catoptron, the method that the method and system coarse adjustment benchmark of reset is set up is the same, just in convex spherical catoptron 2 reseting procedure, is the position adjustment convex spherical catoptron according to the second autocollimation theodolite 8 optical axis.
5th step: from the anti-system computer assistant resetting of axle three, as shown in Figure 6.
Near the focal plane of optical system, install interferometer, the position of adjustment interferometer, makes interferometer collect interference fringe, respectively the wave aberration of measuring system five visual field.The astigmatism of the different visual field of the system that collected by interferometer, coma, spherical aberration value, as the input of Computer Aided Assembly Process Planning software, calculate system primary mirror and secondary mirror spacing adjustment D by Computer Aided Assembly Process Planning algorithm
zc, secondary mirror and three mirror spacing adjustment D
c3, secondary mirror x direction offset D
xc, secondary mirror y direction offset D
yc, secondary mirror x direction angle of inclination T
xc, secondary mirror y direction angle of inclination T
yc, three mirror x direction offset D
x3, three mirror y direction offset D
y3, three mirror x direction angle of inclination T
x3, three mirror y direction angle of inclination T
y3.
According to the adjustment amount calculated and direction, respectively 5 degree of freedom directions of system secondary mirror and three mirrors are adjusted, then interferometer measuring system wave aberration is utilized, and the astigmatism of the different visual field of the system that collected by interferometer, coma, spherical aberration value input as software again, computing system adjustment amount, so repeatedly several times, until 0 field of view axis of system (0 field of view axis refers to systematic optical axis, parallel with female axle) is upper and axle outer visual field wavefront error meets index request.In accurate adjustment process, standard flat catoptron is the benchmark of systematic optical axis, can not adjust.Computer Aided Assembly Process Planning schematic flow sheet as shown in Figure 6.
Claims (2)
1. Large visual angle is from the anti-system of axle three, it is characterized in that: comprise primary mirror, secondary mirror, aperture diaphragm (3), three mirrors and focal plane (5), described primary mirror (1) is from axle hyperboloidal mirror (1), described secondary mirror (2) is convex spherical catoptron (2), described three mirrors are from the recessed oblate spheroid mirror (4) of axle secondary, described primary mirror overlaps as reference axis with female axle of three mirrors, described aperture diaphragm (3) is arranged on secondary mirror, and the optical axis of described secondary mirror overlaps with female axle of three mirrors;
From the target light of infinite point after primary mirror reflects to secondary mirror, then reflected by secondary mirror and enter three mirrors, last three mirrors by image formation by rays to focal plane (5).
2. Large visual angle according to claim 1 is from the anti-system of axle three, it is characterized in that: described primary mirror and secondary mirror are spaced apart 1145mm, secondary mirror and three mirrors are spaced apart 1023mm, three mirror distance focal plane distances are 1400mm, the angle of the female axle of primary mirror optical axis is 4 °, secondary mirror optical axis and female axle clamp angle are 0 °, and three mirror optical axises and female axle clamp angle are 1.2 °.
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| CN201520832985.4U CN205067853U (en) | 2015-10-26 | 2015-10-26 | Big visual field three anti - systems of off -axis |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105242387A (en) * | 2015-10-26 | 2016-01-13 | 中国科学院西安光学精密机械研究所 | Large view field off-axis three-reflector system and adjusting method |
| CN109324421A (en) * | 2018-12-06 | 2019-02-12 | 中国航空工业集团公司洛阳电光设备研究所 | A kind of debugging device and Method of Adjustment of off-axis formula optical system light path |
| CN110716321A (en) * | 2019-10-09 | 2020-01-21 | 中国航空工业集团公司洛阳电光设备研究所 | Off-axis two-mirror system assembling and adjusting method |
| CN110737103A (en) * | 2019-10-31 | 2020-01-31 | 中国科学院长春光学精密机械与物理研究所 | large-caliber off-axis catadioptric multichannel optical system assembling and adjusting method |
| CN111796434A (en) * | 2020-07-16 | 2020-10-20 | 中国人民解放军国防科技大学 | Automatic adjusting system and method for optical system |
| CN113126272A (en) * | 2021-03-05 | 2021-07-16 | 中国科学院西安光学精密机械研究所 | Method for assembling and adjusting large-view-field off-axis three-mirror optical system |
-
2015
- 2015-10-26 CN CN201520832985.4U patent/CN205067853U/en not_active Withdrawn - After Issue
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105242387A (en) * | 2015-10-26 | 2016-01-13 | 中国科学院西安光学精密机械研究所 | Large view field off-axis three-reflector system and adjusting method |
| CN105242387B (en) * | 2015-10-26 | 2018-04-10 | 中国科学院西安光学精密机械研究所 | A kind of off-axis three anti-system of big visual field and Method of Adjustment |
| CN109324421A (en) * | 2018-12-06 | 2019-02-12 | 中国航空工业集团公司洛阳电光设备研究所 | A kind of debugging device and Method of Adjustment of off-axis formula optical system light path |
| CN110716321A (en) * | 2019-10-09 | 2020-01-21 | 中国航空工业集团公司洛阳电光设备研究所 | Off-axis two-mirror system assembling and adjusting method |
| CN110716321B (en) * | 2019-10-09 | 2021-09-10 | 中国航空工业集团公司洛阳电光设备研究所 | Off-axis two-mirror system assembling and adjusting method |
| CN110737103A (en) * | 2019-10-31 | 2020-01-31 | 中国科学院长春光学精密机械与物理研究所 | large-caliber off-axis catadioptric multichannel optical system assembling and adjusting method |
| CN110737103B (en) * | 2019-10-31 | 2022-03-08 | 中国科学院长春光学精密机械与物理研究所 | Large-caliber off-axis catadioptric multichannel optical system assembling and adjusting method |
| CN111796434A (en) * | 2020-07-16 | 2020-10-20 | 中国人民解放军国防科技大学 | Automatic adjusting system and method for optical system |
| CN113126272A (en) * | 2021-03-05 | 2021-07-16 | 中国科学院西安光学精密机械研究所 | Method for assembling and adjusting large-view-field off-axis three-mirror optical system |
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