CN1236278C - Method for inspecting depth of parallelism for optic axis and mounting basal plane - Google Patents
Method for inspecting depth of parallelism for optic axis and mounting basal plane Download PDFInfo
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- CN1236278C CN1236278C CN 03127024 CN03127024A CN1236278C CN 1236278 C CN1236278 C CN 1236278C CN 03127024 CN03127024 CN 03127024 CN 03127024 A CN03127024 A CN 03127024A CN 1236278 C CN1236278 C CN 1236278C
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Abstract
The present invention relates to a method for inspecting the depth of parallelism for an optic axis and a mounting basal plane. A platform is adjusted so that an optic axis of a parallel optic tube 5 and an optic axis of a parallel optic tube 7 are parallel to a flat plate; a system to be inspected is arranged on the flat plate, and the cross line and the electric cross line of the parallel optic tubes are formed into images on a display; when an optic axis of the system to be inspected is not parallel to the flat plate, the images of the two cross lines are misaligned, and the platform is adjusted so that the optic axis of the parallel optic tube 7 is parallel to that of the system to be inspected; the optic axis of the parallel optic tube 7 is not parallel to that of the parallel optic tube, the deflected angles of the two optic axes are detected, and then the inspection of the depth of parallelism for the optic axis and the mounting basal plane of the optic system. The mounting plane of the optic system to be inspected is switched onto the flat plate adopted by the present invention; the measurement for the depth of parallelism for the optic axis of the optic system and the flat plate is converted to the measurement for the depth of parallelism for two parallel optic tubes. The present invention can be widely applied to the inspection of the depth of parallelism for the optic axis and the mounting basal plane of the optic system for spaceflight and aviation.
Description
Technical field: the invention belongs to optical instrument inspection technology field, relate in particular to a kind of method of inspection to system optical axis and its installation base surface depth of parallelism.
Background technology:, many optical systems (scouting optical system etc. as unmanned plane) have been proposed the requirement of optical axis to the installation base surface depth of parallelism along with the development of Aeronautics and Astronautics cause.For guaranteeing that optical system in use keeps stable, often do not add adjusting mechanism during design, but make the depth of parallelism of the two reach requirement, and have the performance of shake-proof corrosioning impact by machining and the means of debuging, guarantee in use not change.This index should be carried out narrow examination before use, guarantees that it reaches designing requirement.The optical axis of optical system is the measurement index that optical system is unified Xiang Xin to the installation base surface depth of parallelism, do not find at present about this index can be for reference and the measuring method used for reference.
Summary of the invention: the objective of the invention is to provide a kind of optical axis of optical system and method for inspection of the installation base surface depth of parallelism of being used for, as shown in Figure 1 and Figure 2:
(a) adjust first platform 1 with dull and stereotyped: (a) at first flat board 2 is placed on first platform 1 as Fig. 1, adjust first platform 1 and make the plane of flat board 2 be in horizontality, on flat board, place prism;
(b) adjust second platform 4 and first parallel light tube 5: adjust directional light autocollimatic imaging behind prismatic reflection that second platform 4 sends first parallel light tube 5 on it (as Fig. 2 a), thus make the plane parallel of optical axis with the flat board of first parallel light tube 5;
(c) adjust the 3rd platform 6 and second parallel light tube 7: take off prism (as Fig. 1 b), adjust second parallel light tube 7 on the 3rd platform 6, cross curve on second parallel light tube, 7 focal planes is imaged on first parallel light tube, 5 focal planes, make the cross curve of the cross curve on second parallel light tube, 7 focal planes and first parallel light tube 5 coincide (as Fig. 2 b), the optical axis of such second parallel light tube 7 also with the plane parallel of flat board, this moment, the optical axis of first parallel light tube 5 was parallel to each other with the optical axis of second parallel light tube 7 and the plane three of flat board;
(d) depth of parallelism of tested system optical axis of measurement and dull and stereotyped basal plane:
Tested optical system is placed on the flat board of first platform 1 (as Fig. 1 c), alignment lens second parallel light tube 7 of tested optical system, cross curve on second parallel light tube, 7 focal planes is presented on the display through the image that tested optical system forms, and the electric cross curve image of display is presented at the center of display simultaneously;
Parallel with dull and stereotyped basal plane when the optical axis of tested optical system, then these two cross curve images overlap fully;
When the optical axis of tested optical system and dull and stereotyped basal plane are not parallel, then these two cross curve images do not overlap, make the optical axis of second parallel light tube 7 parallel by adjusting the 3rd platform 6, the image that shows image that the cross curve on second parallel light tube, 7 focal planes forms through tested optical system and electric crosshair on the display coincide (as Fig. 2 c) with the optical axis of tested optical system;
Take off tested optical system afterwards, because the optical axis of second parallel light tube 7 is adjusted, the optical axis of second parallel light tube 7 is no longer parallel with the optical axis of first parallel light tube 5, the cross curve of observing first parallel light tube 5 also no longer overlaps with the cross image of second parallel light tube 7 on being imaged on its focal plane, (as Fig. 2 d) utilizes the reading drum of first parallel light tube 5 to measure out the angle of first parallel light tube 5 and 7 two optical axis deviations of second parallel light tube, then finished the check of system optical axis and its installation base surface depth of parallelism.
The characteristics of measuring method of the present invention:
Because the flat board that the present invention adopts is transformed into the mounting plane of tested optical system on the plate level, make the check of system optical axis and its installation base surface depth of parallelism be converted to the optical axis of optical system and the check of the plate level depth of parallelism, thereby, be converted to optical axis and these two separable measurable amounts of plate level of optical system with system optical axis and two not easily separated, as to be difficult for measurement amounts of its installation base surface.
Utilize prism, two parallel light tubes respectively the optical axis and the plate level of optical system to be measured, the measurement of the depth of parallelism of the optical axis of optical system and plate level is converted to the measurement of two parallel light tube parallelisms of optical axis.
The present invention can be widely used in the check of space flight, aviation system optical axis and its installation base surface depth of parallelism.
Description of drawings:
Fig. 1 a, b, c are the synoptic diagram of the embodiment of the invention
Fig. 2 a, b, c, d are principle schematic of the present invention
Embodiment is as shown in the figure:
Utilize the device of measurement of the present invention to comprise first platform 1, flat board 2, prism 3, second platform 4, first parallel light tube 5, the 3rd platform 6, second parallel light tube 7.
(1), to dull and stereotyped 2 requirement
Dull and stereotyped size depends on the installation base surface size of tested optical system, and the requirement of plane planeness is depended on by the requirement of the photometer axis and the basal plane depth of parallelism.
In measuring process with dull and stereotyped 2 plane as basal plane, if the flatness of basal plane is bad, the situation that the bottom surface that will cause prism 3 and the installation base surface of tested optical system 8 do not overlap, thereby the measuring error of bringing; Require to be the tested optical system of 0.3mrad (1.7 ') for the depth of parallelism, require the flatness of flat board 2 to be better than 1/5 of the depth of parallelism, if tested optical system installation base surface is of a size of 150mm * 150mm, then flatness error should be better than 14 μ m, and the flatness tolerance grade should be selected 6 grades.
(2), to the requirement of prism 3
Prism 3 is to use as a benchmark in measuring process, and it can be that right-angle prism also can be a block prism, guarantees that with it dull and stereotyped 2 plane is parallel with two parallel light tube optical axises.Prism can adopt right-angle prism, and the right angle mismachining tolerance of right-angle prism can reach 2 " in, be enough to guarantee the measurement of paralleism of 1 ' accuracy requirement.
(3), to the requirement of first parallel light tube 5, second parallel light tube 7
First parallel light tube 5 adopts 0.2 second parallel light tube, and second parallel light tube 7 adopts f550 parallel light tube or 0.2 second parallel light tube.
(4), picture receiver spare
Comprise: the CCD receiver of tested optical system, display and electric crosshair are done auxiliary the observation.
(5), to the requirement of first platform 1, second platform 4, the 3rd platform 6
Platform must be adjustable, can adopt the mode of 3 leveling, but does not need the strict leveling of platform, only needs roughly leveling to get final product, and purpose is the labile factor that reduces in the measuring process.
Before the measurement at first with the first roughly leveling of platform 1, second platform 4 and the 3rd platform 6 are transferred first parallel light tube, 5 optical axises and second parallel light tube, 7 optical axises coaxial by right-angle prism, do not require two optical axis levels, only require that two optical axises are parallel, therefore the level-off to first platform 1 need not to be strict with, and gets final product with the leveling of classification bubble.
Claims (1)
1, the method for inspection of the optical axis and the installation base surface depth of parallelism, it is characterized in that: its checking procedure is as follows:
(a) adjust first platform (1) and dull and stereotyped (2): at first flat board (2) is placed on first platform (1), adjust first platform (1) and make the plane of flat board (2) be in horizontality, go up in dull and stereotyped (2) and place prism (3);
(b) adjust second platform (4) and first parallel light tube (5): adjust directional light autocollimatic imaging after prism (3) reflection that second platform (4) sends first parallel light tube (5) on it, thereby make the optical axis of first parallel light tube (5) and the plane parallel of dull and stereotyped (2);
(c) adjust the 3rd platform (6) and second parallel light tube (7): take off prism (3), adjust second parallel light tube (7) on the 3rd platform (6), cross curve on second parallel light tube (7) focal plane is imaged on first parallel light tube (5) focal plane, the cross curve on second parallel light tube (7) focal plane and the cross curve of first parallel light tube (5) are coincided, make the optical axis of second parallel light tube (7) and the plane parallel of dull and stereotyped (2), the optical axis of first parallel light tube this moment (5) and the optical axis of second parallel light tube (7) and the plane three of flat board (2) are parallel to each other;
(d) depth of parallelism of tested system optical axis of measurement and dull and stereotyped basal plane:
Tested optical system is placed on the flat board (2) of first platform (1), alignment lens second parallel light tube (7) of tested optical system, cross curve on second parallel light tube (7) focal plane is presented on the display through the image that tested optical system forms, and the electric cross curve image of display is presented at the center of display simultaneously;
Parallel with dull and stereotyped basal plane when the optical axis of tested optical system, then these two cross curve images overlap fully;
When the optical axis of tested optical system and dull and stereotyped (2) when basal plane is not parallel, then these two cross curve images do not overlap, make the optical axis of second parallel light tube (7) parallel by adjusting the 3rd platform (6), show on the display that the cross curve on second parallel light tube (7) focal plane coincides through the image of tested optical system formation and the image of electric crosshair with the optical axis of tested optical system;
Take off tested optical system afterwards, the optical axis of second parallel light tube this moment (7) and the optical axis of first parallel light tube (5) are not parallel, the cross curve of observing first parallel light tube (5) also no longer overlaps with the cross image of second parallel light tube (7) on being imaged on its focal plane, utilize the reading drum of first parallel light tube (5) to measure out the angle of first parallel light tube (5) and (7) two optical axis deviations of second parallel light tube, then finished the check of system optical axis and its installation base surface depth of parallelism.
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| Application Number | Priority Date | Filing Date | Title |
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| CN 03127024 CN1236278C (en) | 2003-05-13 | 2003-05-13 | Method for inspecting depth of parallelism for optic axis and mounting basal plane |
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| Application Number | Priority Date | Filing Date | Title |
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| CN 03127024 CN1236278C (en) | 2003-05-13 | 2003-05-13 | Method for inspecting depth of parallelism for optic axis and mounting basal plane |
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| CN1542401A CN1542401A (en) | 2004-11-03 |
| CN1236278C true CN1236278C (en) | 2006-01-11 |
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Families Citing this family (12)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101294800B (en) * | 2007-04-28 | 2011-08-10 | 长春奥普光电技术股份有限公司 | Frame angle calibration method and apparatus of multi-frame optoelectronic platform |
| CN102213842B (en) * | 2011-06-03 | 2012-12-26 | 中国兵器工业第二〇五研究所 | Optical axis debugging device of television observation tool with multiple field views |
| CN102967277A (en) * | 2012-11-19 | 2013-03-13 | 尹玉军 | Method for measuring depth of parallelism of orienting pipes |
| CN103402114B (en) * | 2013-07-05 | 2015-12-23 | 中国科学院西安光学精密机械研究所 | High accuracy Visible imaging system combination adjustment, docking calculation and mechanism |
| CN104154881B (en) * | 2014-07-14 | 2017-02-15 | 中国科学院长春光学精密机械与物理研究所 | Measuring method for parallelism error of shaft hole end face of telescope four-way |
| CN106643501B (en) * | 2016-12-28 | 2019-05-21 | 中国科学院长春光学精密机械与物理研究所 | A kind of light curtain target building system and method |
| CN106681098B (en) * | 2017-02-10 | 2022-05-20 | 中国科学院西安光学精密机械研究所 | High-precision image surface docking device and method for visible light imaging system |
| CN106706139B (en) * | 2017-02-10 | 2017-12-26 | 西安中科飞图光电科技有限公司 | A kind of high-precision infrared imaging system image planes docking calculation |
| CN111381334B (en) * | 2018-12-28 | 2021-06-15 | 中国科学院长春光学精密机械与物理研究所 | Alignment method for optical path component in optical system |
| CN111381335B (en) * | 2018-12-28 | 2021-06-15 | 中国科学院长春光学精密机械与物理研究所 | Light path component alignment device used in optical system |
| CN109655016B (en) * | 2019-02-15 | 2020-06-26 | 广西玉柴机器股份有限公司 | On-site part angle measuring device and method |
| CN111123987B (en) * | 2019-12-27 | 2021-05-18 | 中国科学院西安光学精密机械研究所 | System and method for adjusting parallelism of optical axis of common-aperture dual-band imaging system |
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