CN101464143A - Method and equipment for digitized detection of double-plain shaft parallelism of optical instrument - Google Patents
Method and equipment for digitized detection of double-plain shaft parallelism of optical instrument Download PDFInfo
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- CN101464143A CN101464143A CNA2009100366695A CN200910036669A CN101464143A CN 101464143 A CN101464143 A CN 101464143A CN A2009100366695 A CNA2009100366695 A CN A2009100366695A CN 200910036669 A CN200910036669 A CN 200910036669A CN 101464143 A CN101464143 A CN 101464143A
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Abstract
The invention discloses a method for detecting the optically biaxial parallelism of an optical instrument on a digitized basis and a device thereof, wherein, the method comprises the following steps: dividing parallel light with a cross-shaped image emitted by a collimator into two beams of light which are strictly parallel to each other by a light dividing device; irradiating the two beams of light to the left eyepiece and the right eyepiece of an optical instrument to be measured respectively; emitting the light from the eyepieces of the instrument; then, synthesizing the light through a fusion device to generate an image with two cross-shaped patterns; and transmitting the synthetic image to a computer for processing by a camera probe. The inclined angle of the two images and the non-superposition degree of the two cross-shaped patterns serve as quantitative indexes in parallelism judgment; and the two images are superposed after the tilt correction of the image shown in the instrument to further judge the parallelism of the two optical axes of the instrument. By adopting the method, the invention has the advantages that not only the workload is reduced; but also the operating time is shortened; and the precisions of detection and correction are greatly improved as the quantitative indexes in parallelism judgment can be obtained through the computer.
Description
Technical field
The present invention relates to a kind of method for testing performance of optical instrument, specifically be meant the method and the equipment thereof of double-plain shaft parallelism in the digitizing detection optical instrument that a kind of collimation of two optical axises of the optical instrument to the bimirror tube detects.
Background technology
Existing manual detection mode uses two optical axis rectifiers to detect, its detection method is: with instrument aiming cross target to be measured, regulate diopter rotating screw, see target clearly, mobile collimator makes left lens barrel aim at the cross target, the cross target of seeing right left lens barrel then whether in rectangular-shaped frame, if would show that index meets the requirements, this method can only be a kind of qualitative examination.Because this detection method adopts manual mode, so the workload that drops into is big, the time of operation is long, it is low to detect the precision of proofreading and correct.
Summary of the invention
In order to overcome above-mentioned deficiency, the object of the present invention is to provide a kind of time saving and energy saving, and the quantized values that can obtain concrete double-plain shaft parallelism index with the method for double-plain shaft parallelism in the digitizing detection optical instrument that improves correction accuracy.
Another object of the present invention provides the employed equipment of a kind of realization said method.
For solving the problems of the technologies described above, the technical solution adopted in the present invention is: the method for double-plain shaft parallelism in a kind of digitizing detection optical instrument may further comprise the steps:
A. the directional light that is " ten " font image with the parallel light tube outgoing is divided into the strict parallel light of two bundles through light-dividing device, and presents two horizontal flat vertical former " ten " font images.
B. two bundles are presented two horizontal strict parallel light of putting down vertical former " ten " font image, inject object lens in two light tubes of tested optical instrument, and penetrating the light present " ten " font image from eyepiece, the two-beam after the ejaculation just presents " ten " font image of two plain shaft parallelism information that include tested instrument.
C. the light of " ten " font image of two plain shaft parallelism information that tested instrument is penetrated synthesizes a branch of light that contains the image of two " ten " shapes through closing as device.
D. after the light collection of camera to the image of two " ten " shapes of this Shu Hanyou, pass to computing machine.
E. the trace routine of being worked out in the computing machine calculates two horizontal relatively angles of inclination of putting down vertical former " ten " font image of " ten " font image that include two plain shaft parallelism information of tested instrument, with the quantizating index of this angle of inclination as the judgement collimation.
F. after two images that tested instrument was being carried out slant correction, two images are superposeed, further judge the collimation of two optical axises of tested instrument, two images after stack are complete when overlapping, and are then parallel; When overlapping, then not parallel when incomplete.
Realize the employed equipment of said method, by parallel light tube, light-dividing device, close picture device, camera, computing machine is formed, described parallel light tube is located at a side of light-dividing device, the opposite side of light-dividing device is provided with and closes as device and leave the gap that is used to place tested optical instrument therebetween, camera is located at and closes as the next door of device and relative with the optical emission exit that closes the picture device, and newspaper picture head links to each other with computing machine by signal wire.
Described light-dividing device is made up of two identical rhombic prisms, and two rhombic prism is placed side by side.Its effect is that the directional light of parallel light tube outgoing is expanded bundle, satisfies the needs of tested telescope optical system incident light.
The described picture device that closes, form by plane mirror, coincidence prism, two plane mirrors are located at the position of two-beam process of the outgoing of tested optical instrument, be positioned at simultaneously coincidence prism both sides and with the parallel sided of coincidence prism, its effect is: the light path of two eyepieces of tested optical instrument is lumped together.
Described closing as device is provided with cover glass.
Beneficial effect of the present invention is: owing to adopt said method, not only reduce workload, but also shortened the running time; Owing to can obtain judging the quantizating index of collimation, improved the precision that detects and proofread and correct greatly by computing machine.
Description of drawings
Below in conjunction with the drawings and specific embodiments the present invention is described in further detail:
Fig. 1 is the structural representation of device therefor of the present invention;
Fig. 2 is " ten " font image that former " ten " font image and tested instrument penetrate;
Fig. 3 is the synoptic diagram that " ten " font image behind two slant corrections superposes.
Among the figure: 1, parallel light tube; 2, light-dividing device; 3, tested optical instrument; 4, close the picture device; 5, camera; 6, computing machine; 7, rhombic prism; 8, plane mirror; 9, coincidence prism; 10, former " ten " font image; 11, " ten " font image; 12, the image that contains two " ten " shapes; 13, cover glass; 14, picture catching frame; 15, vertical vertical bar; 16, perpendicular bisector; 17, the perpendicular bisector in former " ten " font image.
Embodiment
As shown in Figure 1, the method for double-plain shaft parallelism in a kind of digitizing detection optical instrument may further comprise the steps:
A. the directional light that is " ten " font image with parallel light tube 1 outgoing is divided into the strict parallel light of two bundles through light-dividing device 2, and presents two horizontal flat vertical former " ten " font images 10.
B. two bundles are presented two horizontal strict parallel light of putting down vertical former " ten " font image 10, inject object lens in two light tubes of tested optical instrument 3, and penetrating the light present " ten " font image 11 from eyepiece, the two-beam after the ejaculation just presents " ten " font image 11 of two plain shaft parallelism information that include tested instrument.
C. the light of " ten " font image 11 of two plain shaft parallelism information that tested optical instrument 3 is penetrated synthesizes a branch of light that contains the image 12 of two " ten " shapes through closing as device.
D. after the light collection of camera to the image 12 of two " ten " shapes of this Shu Hanyou, pass to computing machine 6.
E. the trace routine of being worked out in the computing machine calculates two " ten " font image 11 horizontal relatively angles of inclination of putting down vertical former " ten " font image 10 that include two plain shaft parallelism information of tested optical instrument 3, with the quantizating index of this angle of inclination as the judgement collimation.
F. after two images that tested instrument was being carried out slant correction, two images are superposeed, further judge the collimation of two optical axises of tested instrument, two images after stack are complete when overlapping, and are then parallel; When overlapping, then not parallel when incomplete.
Camera in above-mentioned adopts automatic focusing CCD camera; Trace routine adopts LabVIEW to write;
Realize the employed equipment of said method, by parallel light tube 1, light-dividing device 2, close picture device 4, camera 5, computing machine 6 is formed, described parallel light tube 1 is located at a side of light-dividing device 2, the opposite side of light-dividing device 2 is provided with and closes as device 4 and leave the gap that is used to place tested optical instrument 3 therebetween, camera 5 is located at and closes as the next door of device 4 and relative with the optical emission exit that closes picture device 4, and newspaper picture 5 links to each other with computing machine 6 by signal wire.
Described light-dividing device 2 is made up of two identical rhombic prisms 7, and two rhombic prism 7 is placed side by side.
The described picture device 4 that closes is made up of plane mirror 8, coincidence prism 9, and two plane mirrors 8 are located at the position of two-beam process of the outgoing of tested optical instrument, be positioned at simultaneously coincidence prism 9 both sides and with the parallel sided of coincidence prism 9.
Described closing as device 4 is provided with cover glass 13.
Principle of work: the principle of work of the device of double-plain shaft parallelism is in the digitizing detection optical instrument: the directional light of parallel light tube outgoing (adopting the cross target plate) is divided into the strict parallel light of two bundles through light-dividing device, enter the object lens of two telescope optical systems of tested instrument respectively, the emergent light of eyepiece has comprised the performance information of two telescope optical systems, two bundle emergent lights are through closing as entering automatic focusing CCD camera behind the synthetic a branch of light of device, become vision signal through opto-electronic conversion, after video frequency collection card collection vision signal, carry out Flame Image Process through the trace routine that LabVIEW on the computing machine writes, draw collimation and differentiate the result.
Trace routine principle: the cardinal principle of double-plain shaft parallelism trace routine: upright object (line segment) no longer keeps vertical phenomenon to be called picture behind system imaging and tilts.Picture tilts can be divided into two classes: a class claims absolute picture to tilt, and it is meant image and original result relatively in the monocular tube; Another kind of title is relatively as inclination, and it is meant in the bimirror tube instrument, about the result that compares mutually of two lens barrel images.Usually picture is tilted to be limited in 1 °.
The image that collects as shown in Figure 2, about two cross target plate images are arranged in two eyepiece images, utilize that the Vision module can produce picture catching frame 14 automatically in the LabVIEW program, capture the vertical vertical bar 15 of target plate in the image, produce perpendicular bisector 15, the perpendicular bisector 16 of two target plates, and calculate the inclination angle of the perpendicular bisector 17 in two perpendicular bisectors former relatively " ten " font image, differentiate the quantizating index that picture tilts as collimation.
As shown in Figure 3, after the image slices slant correction, the collimation of carrying out level and vertical direction again detects, with about two width of cloth images superpose, strict parallel if optical axis keeps, two target plate images are overlapping fully, if it is not parallel, then not exclusively overlapping on level or the vertical direction, differentiate algorithm and be rectangular area S, S1, if S=S1 then differentiate the optical axis keeping parallelism with unified two target plates of true origin calculating superimposed image.S＝X×Y；S
1＝X
1×Y
1。
Claims (5)
1, the method for double-plain shaft parallelism in a kind of digitizing detection optical instrument may further comprise the steps:
A. the directional light that is " ten " font image with parallel light tube (1) outgoing is divided into the strict parallel light of two bundles through light-dividing device (2), and presents two horizontal flat vertical former " ten " font images (10);
B. two bundles are presented two horizontal strict parallel light of putting down vertical former " ten " font images (10), inject object lens in two light tubes of tested optical instrument (3), and penetrating the light present " ten " font image (11) from eyepiece, the two-beam after the ejaculation just presents " ten " font image (11) of two plain shaft parallelism information that include tested instrument;
C. the light of " ten " font image (11) of two plain shaft parallelism information that tested optical instrument (3) is penetrated synthesizes a branch of light that contains the image (12) of two " ten " shapes through closing picture device (4);
D. after the light collection of camera (5) to the image (12) of two " ten " shapes of this Shu Hanyou, pass to computing machine (6);
E. the trace routine of being worked out in the computing machine calculates the angles of inclination of horizontal relatively flat vertical former " ten " the font images (10) of " ten " font image (11) of two two plain shaft parallelism information that include tested optical instrument (3), with this angle of inclination as judging that the two optical axises of collimation are relatively as the quantizating index that tilts;
F. after two images that tested instrument was being carried out slant correction, two images are superposeed, further judge the collimation of two optical axises of tested instrument, two images after stack are complete when overlapping, and are then parallel; When overlapping, then not parallel when incomplete.
2, realize the used equipment of method of the described digitizing detection optical of claim 1 instrument double-plain shaft parallelism, it is characterized in that: this device is by parallel light tube (1), light-dividing device (2), close picture device (4), camera (5), computing machine (6) is formed, described parallel light tube (1) is located at a side of light-dividing device (2), the opposite side of light-dividing device (2) is provided with and closes picture device (4) and leave the gap that is used to place tested optical instrument (3) therebetween, camera (5) is located at the next door of closing picture device (4) and relative with the optical emission exit that closes picture device (4), and newspaper picture head (5) links to each other with computing machine (6) by signal wire.
3, the used equipment of method of digitizing detection optical instrument double-plain shaft parallelism according to claim 2, it is characterized in that: described light-dividing device (2) is made up of two identical rhombic prisms (7), and two rhombic prism (7) is placed side by side.
4, the used equipment of method of digitizing detection optical instrument double-plain shaft parallelism according to claim 2, it is characterized in that: the described picture device (4) that closes, form by plane mirror (8), coincidence prism (9), two plane mirrors (8) are located at the position of two-beam process of the outgoing of tested optical instrument, be positioned at simultaneously coincidence prism (9) both sides and with the parallel sided of coincidence prism (9).
5, the used equipment of method of digitizing detection optical instrument double-plain shaft parallelism according to claim 2 is characterized in that: the described picture device (4) that closes is provided with cover glass (13).
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Cited By (9)
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| CN104406543A (en) * | 2014-11-19 | 2015-03-11 | 湖北三江航天红峰控制有限公司 | Optical axis parallelity device of double optical axis system and method |
| CN104792297A (en) * | 2015-04-20 | 2015-07-22 | 上海市计量测试技术研究院 | Calibration device for extensometer |
| CN106596077A (en) * | 2016-12-31 | 2017-04-26 | 歌尔科技有限公司 | Dual-lens positioning detection system and dual-lens positioning detection method |
| CN106657974A (en) * | 2017-02-27 | 2017-05-10 | 北京图森未来科技有限公司 | Binocular camera control method and device, binocular camera |
| CN107490851A (en) * | 2017-08-29 | 2017-12-19 | 天津津航技术物理研究所 | The optical detection apparatus and method of surgical operation microscope or so zooming system |
| CN109470450A (en) * | 2018-10-16 | 2019-03-15 | 浙江舜宇光学有限公司 | Double appraisal procedures for taking the photograph lens group parallelism of optical axis, device and computer media |
| CN112815876A (en) * | 2020-12-31 | 2021-05-18 | 合肥视涯技术有限公司 | Binocular head-mounted display equipment parallelism detection device and method |
| CN113639960A (en) * | 2021-08-09 | 2021-11-12 | 孝感华中精密仪器有限公司 | Multispectral image inclination detection device |
| CN113703124A (en) * | 2021-09-03 | 2021-11-26 | 孝感华中精密仪器有限公司 | Method for correcting coaxiality of biconcave off-axis system |
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- 2009-01-15 CN CN2009100366695A patent/CN101464143B/en not_active Expired - Fee Related
Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104406543A (en) * | 2014-11-19 | 2015-03-11 | 湖北三江航天红峰控制有限公司 | Optical axis parallelity device of double optical axis system and method |
| CN104406543B (en) * | 2014-11-19 | 2018-02-23 | 湖北三江航天红峰控制有限公司 | A kind of the plain shaft parallelism calibration apparatus and method of double optical axis systems |
| CN104792297A (en) * | 2015-04-20 | 2015-07-22 | 上海市计量测试技术研究院 | Calibration device for extensometer |
| CN106596077B (en) * | 2016-12-31 | 2023-09-15 | 歌尔光学科技有限公司 | Double-lens positioning detection system and double-lens positioning detection method |
| CN106596077A (en) * | 2016-12-31 | 2017-04-26 | 歌尔科技有限公司 | Dual-lens positioning detection system and dual-lens positioning detection method |
| CN106657974A (en) * | 2017-02-27 | 2017-05-10 | 北京图森未来科技有限公司 | Binocular camera control method and device, binocular camera |
| CN106657974B (en) * | 2017-02-27 | 2024-02-09 | 北京图森智途科技有限公司 | Control method and device of binocular camera and binocular camera |
| CN107490851A (en) * | 2017-08-29 | 2017-12-19 | 天津津航技术物理研究所 | The optical detection apparatus and method of surgical operation microscope or so zooming system |
| CN107490851B (en) * | 2017-08-29 | 2020-04-28 | 天津津航技术物理研究所 | Optical detection device and method for left and right zoom system of operating microscope |
| CN109470450B (en) * | 2018-10-16 | 2020-07-31 | 浙江舜宇光学有限公司 | Method and device for evaluating parallelism of optical axes of double-camera lens group and computer medium |
| CN109470450A (en) * | 2018-10-16 | 2019-03-15 | 浙江舜宇光学有限公司 | Double appraisal procedures for taking the photograph lens group parallelism of optical axis, device and computer media |
| CN112815876A (en) * | 2020-12-31 | 2021-05-18 | 合肥视涯技术有限公司 | Binocular head-mounted display equipment parallelism detection device and method |
| CN113639960A (en) * | 2021-08-09 | 2021-11-12 | 孝感华中精密仪器有限公司 | Multispectral image inclination detection device |
| CN113639960B (en) * | 2021-08-09 | 2024-04-12 | 孝感华中精密仪器有限公司 | Multispectral image inclination detection device |
| CN113703124A (en) * | 2021-09-03 | 2021-11-26 | 孝感华中精密仪器有限公司 | Method for correcting coaxiality of biconcave off-axis system |
| CN113703124B (en) * | 2021-09-03 | 2024-01-02 | 孝感华中精密仪器有限公司 | Method for correcting coaxiality of biconcave off-axis system |
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