CN203011419U - An optical axis parallelism digital calibration instrument for multiple optical sensors - Google Patents
An optical axis parallelism digital calibration instrument for multiple optical sensors Download PDFInfo
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- CN203011419U CN203011419U CN 201220697655 CN201220697655U CN203011419U CN 203011419 U CN203011419 U CN 203011419U CN 201220697655 CN201220697655 CN 201220697655 CN 201220697655 U CN201220697655 U CN 201220697655U CN 203011419 U CN203011419 U CN 203011419U
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- collimator
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Abstract
The utility model discloses an optical axis parallelism digital calibration instrument for multiple optical sensors, which comprises a reflective collimator and a processor. The reflective collimator comprises a collimator primary mirror, a collimator secondary mirror, a crosshair reticule, photosensitive paper and a light source, wherein the collimator primary mirror and the collimator secondary mirror are used for reflecting light illuminated by a tested sensor and the light source; the photosensitive paper receives laser emitted by the tested sensor, and a facula is formed on the photosensitive paper; and the crosshair reticule forms images in a television and thermal imager of the tested sensor through the collimator secondary mirror and the collimator primary mirror. The processor comprises an image acquisition card and a computer, and is connected to the tested sensor through a cable. According to the calibration instrument, experience is replaced by data; subjectivity is replaced by objectivity; the detection precision of optical axis parallelism may reach 0.03 mrad; singleness of conventional detection methods is improved, calibration efficiency of an photoelectric system is substantially guaranteed, and final performance of the photoelectric system is substantially improved.
Description
Technical field
The utility model belongs to electro-optical system, relates to the optical axis calibration of electro-optical system, is specifically related to a kind of many optical sensors plain shaft parallelism numeral testing-calibrating instrument.
Background technology
In the design research and development and production of electro-optical system, development and maturation along with photoelectric sensor, the compound main flow that has become electro-optical system of many optical sensors, compound sensor comprises: TV Goniometer, thermal infrared imager, laser range finder etc., and for the functional and environmental suitability that improves electro-optical system.Plain shaft parallelism is one item important technology index, directly affects the final performance of electro-optical system, and the parallel guarantee multisensor of optical axis all aims at same target.
At present, the traditional human eye subjective experience observation decision method (as GJB 2241-1994 " pulse laser laser welder method for testing performance ") of the domestic basic employing of the detection of plain shaft parallelism.In the calibration process, the subjective factors such as tester's personal experience, professional skill on test result impact greatly, and final calibration result can't carry out the quantification of concrete numerical value, is only qualified criterion.Qualified criterion so also is unprofitable to next step adjustment work.
Summary of the invention
Fundamental purpose of the present utility model is to improve the optical axis calibrator precision of many optical sensors in photovoltaic, and solving traditional approach can only the human eye subjective judgement, the problem that can't quantize testing result.
the utility model specifically discloses a kind of many optical sensors plain shaft parallelism numeral testing-calibrating instrument, comprise reflective parallel light pipe and processor, the reflective parallel light pipe comprises the parallel light tube primary mirror, the parallel light tube secondary mirror, crosshair graticule and photographic paper and light source, parallel light tube primary mirror and parallel light tube secondary mirror are used for reflecting the light that tested sensor and light source are shining into, photographic paper receives the laser of tested sensor emission, form hot spot thereon, the crosshair graticule is by the imaging in the TV of tested sensor and thermal imaging system of parallel light tube secondary mirror and parallel light tube primary mirror, processor comprises image pick-up card and computing machine, processor is connected on tested sensor by cable.
Further, the bright crosshair graticule of the illumination that light source sends and photographic paper are by parallel light tube primary mirror and the reflection of parallel light tube secondary mirror, imaging in sensor to be measured.
Further, the only visible light and the infrared light that send of light source.
This testing-calibrating instrument replaces experience with data, objective replacement is subjective, and the accuracy of detection of plain shaft parallelism can reach 0.03mrad, has improved the simplification of present detection means, greatly guarantee the adjustment efficient of electro-optical system, and increased substantially the final performance of electro-optical system.
Description of drawings
Fig. 1: many optical sensors plain shaft parallelism numeral testing-calibrating instrument schematic diagram;
Fig. 2: calibration theory diagram;
Fig. 3: standard laser hot spot and cross drone emulating image schematic diagram.
Embodiment
Below in conjunction with accompanying drawing, the utility model is specifically described.
As shown in Figure 1, plain shaft parallelism numeral testing-calibrating instrument of the present utility model comprises reflective parallel light pipe 1 and processor 3 two large divisions, and reflective parallel light pipe 1 comprises parallel light tube primary mirror 6, parallel light tube secondary mirror 7, crosshair graticule and photographic paper 5 and light source 4.Parallel light tube secondary mirror 7 and parallel light tube primary mirror 6 are used for the reflection incident laser, it is converged to form hot spot on photographic paper, light source 4 sends visible light and infrared light, shines on the crosshair graticule, by the reflection of parallel light tube primary mirror 6 and parallel light tube secondary mirror 7, imaging in sensor 2 to be measured.Processor comprises image pick-up card 11 and computing machine 12, and processor is connected on tested sensor 2 by cable.
When carrying out verification, with tested sensor 2 over against parallel light tube, with cable, processor 3 is connected with tested sensor 2, in the present embodiment, after the reflection of laser beam that laser instrument in tested sensor 2 sends 8 by parallel light tube secondary mirror 7, primary mirror 6, converge on the photographic paper of focal plane and form hot spot.
Infrared and the visible light 9 that light source 4 sends shines crosshair graticule and photographic paper 5, after the reflection by secondary mirror 7 and primary mirror 6, becomes the picture of crosshair and hot spot in the thermal imagery of tested sensor 2, TV.Then in tested sensor 2, the vision signal of TV and thermal imaging system gathers to computing machine 12 by image pick-up card 11, and 12 pairs of video images of computing machine carry out Digital Image Processing and calculate, and detects with the digitizing that realizes plain shaft parallelism.Then operating personnel carry out adjustment of displacement, optical axis correction according to digitized testing result to the laser instrument in tested sensor, TV, thermal imaging system.
Adopt simulation method that image processing algorithm and precision are verified, the emulating image of employing as shown in Figure 3.
The Algorithm of laser spot detection and the accuracy test result that adopt simulation method to carry out are: error determines that by 3 σ rules its precision is 0.015mrad, is better than 0.03mrad less than 1 pixel.Specifically see the following form:
The cross drone Spot detection algorithm and the accuracy test result that adopt simulation method to carry out are: error determines that by 3 σ rules its precision is 0.024mrad, is better than 0.03mrad less than 1 pixel.Specifically see the following form:
Be understandable that, above embodiment is only the illustrative embodiments that adopts for principle of the present utility model is described, yet utility model is not limited to this.For those skilled in the art, in the situation that do not break away from spirit of the present utility model and essence, can make various modification and improvement, these modification and improvement are also real is protection domain of the present utility model.
Claims (3)
1. optical sensor plain shaft parallelism more than kind numeral testing-calibrating instrument, it is characterized in that: comprise reflective parallel light pipe (1) and processor (3), reflective parallel light pipe (1) comprises parallel light tube primary mirror (6), parallel light tube secondary mirror (7), crosshair graticule and photographic paper (5) and light source (4), parallel light tube primary mirror (6) and parallel light tube secondary mirror (7) are used for reflecting the light that tested sensor (2) and light source (4) are shining into, photographic paper receives the laser of tested sensor (2) emission, form hot spot thereon, the crosshair graticule is by the imaging in the TV of tested sensor (2) and thermal imaging system of parallel light tube secondary mirror (7) and parallel light tube primary mirror (6), processor comprises image pick-up card (11) and computing machine (12), processor is connected on tested sensor by cable (10).
2. many optical sensors plain shaft parallelism numeral testing-calibrating instrument according to claim 1, it is characterized in that: the bright crosshair graticule of the illumination that light source (4) sends and photographic paper (5), by parallel light tube primary mirror (6) and parallel light tube secondary mirror (7) reflection, imaging in sensor to be measured (2).
3. many optical sensors plain shaft parallelism numeral testing-calibrating instrument according to claim 1 and 2 is characterized in that: the only visible light and the infrared light that send of light source (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220697655 CN203011419U (en) | 2012-12-17 | 2012-12-17 | An optical axis parallelism digital calibration instrument for multiple optical sensors |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220697655 CN203011419U (en) | 2012-12-17 | 2012-12-17 | An optical axis parallelism digital calibration instrument for multiple optical sensors |
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| CN203011419U true CN203011419U (en) | 2013-06-19 |
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| CN 201220697655 Expired - Fee Related CN203011419U (en) | 2012-12-17 | 2012-12-17 | An optical axis parallelism digital calibration instrument for multiple optical sensors |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103412391A (en) * | 2013-08-14 | 2013-11-27 | 中国科学院光电技术研究所 | Method for realizing through-axis centering of optical system based on laser tracker |
| CN104122640A (en) * | 2014-07-29 | 2014-10-29 | 中船重工中南装备有限责任公司 | Three-axis calibration instrument |
| CN104567738A (en) * | 2014-12-30 | 2015-04-29 | 北京航天控制仪器研究所 | System and method for precisely measuring optical axis parallelism |
| CN106644412A (en) * | 2016-12-30 | 2017-05-10 | 上海镭昊光电股份有限公司 | Multispectral reflection type collimator |
| CN110018547A (en) * | 2018-01-09 | 2019-07-16 | 北京振兴计量测试研究所 | The passive athermal device of machinery for wide temperature range infrared collimator |
| CN113162690A (en) * | 2021-06-01 | 2021-07-23 | 中国科学院微小卫星创新研究院 | Space laser communication detection device and method |
-
2012
- 2012-12-17 CN CN 201220697655 patent/CN203011419U/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103412391A (en) * | 2013-08-14 | 2013-11-27 | 中国科学院光电技术研究所 | Method for realizing through-axis centering of optical system based on laser tracker |
| CN104122640A (en) * | 2014-07-29 | 2014-10-29 | 中船重工中南装备有限责任公司 | Three-axis calibration instrument |
| CN104567738A (en) * | 2014-12-30 | 2015-04-29 | 北京航天控制仪器研究所 | System and method for precisely measuring optical axis parallelism |
| CN104567738B (en) * | 2014-12-30 | 2018-01-05 | 北京航天控制仪器研究所 | Parallelism of optical axis accurate measuring systems and method |
| CN106644412A (en) * | 2016-12-30 | 2017-05-10 | 上海镭昊光电股份有限公司 | Multispectral reflection type collimator |
| CN110018547A (en) * | 2018-01-09 | 2019-07-16 | 北京振兴计量测试研究所 | The passive athermal device of machinery for wide temperature range infrared collimator |
| CN110018547B (en) * | 2018-01-09 | 2021-06-18 | 北京振兴计量测试研究所 | Mechanical passive heat difference eliminating device for wide temperature range infrared collimator |
| CN113162690A (en) * | 2021-06-01 | 2021-07-23 | 中国科学院微小卫星创新研究院 | Space laser communication detection device and method |
| CN113162690B (en) * | 2021-06-01 | 2023-10-27 | 中国科学院微小卫星创新研究院 | Space laser communication detection device and method |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130619 Termination date: 20151217 |
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| EXPY | Termination of patent right or utility model |