CN102854169A - Tester for transmissivity of optical window of laser initiator - Google Patents
Tester for transmissivity of optical window of laser initiator Download PDFInfo
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- CN102854169A CN102854169A CN2012103137134A CN201210313713A CN102854169A CN 102854169 A CN102854169 A CN 102854169A CN 2012103137134 A CN2012103137134 A CN 2012103137134A CN 201210313713 A CN201210313713 A CN 201210313713A CN 102854169 A CN102854169 A CN 102854169A
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- photodetector
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Abstract
The invention provides a tester for transmissivity of an optical window of a laser initiator, which belongs to the field of measurement of characteristics of a self-focusing lens optical window. The tester comprises a laser generator, a single-chip microcomputer system, an optical fiber splitter, a first photodetector, an integrating sphere and a second photodetector. The single-chip microcomputer system is respectively connected with the laser generator, the first photodetector and the second photodetector; the optical fiber splitter is connected with the laser generator and the first photodetector; and the second photodetector is arranged in the integrating sphere. The tester provided by the invention has the following advantages: testing is simple and rapid, and the transmissivity of a sample to be tested can be measured in an instant only by connecting the sample to be tested with a testing cable and to insert the sample into an input interface of the integrating sphere; test accuracy is high, only one laser pulse is needed during testing and requirements on long-term stability of the laser are low; two detectors are exactly the same and have strong resistance to common mode interference (such as temperature drift), and good repeatability of test results is realized.
Description
Technical field
The invention belongs to the fields of measurement of GRIN Lens light window characteristic, particularly a kind of transmissivity tester of Laser Initiating Device light window.
Background technology
Manual method is still adopted in the at present measurement of Laser Initiating Device light window transmissivity: the light with certain power and wavelength passes through fiber-optic illuminated in the initiator light window, then measure the power of transmitted light, transmitted optical power and incident optical power are divided by obtains the transmissivity of tested light window.The method simple, intuitive but shortcoming is remarkable:
(1) measuring accuracy is low.
The measurement of incident light and transmitted light is affected by the human factor in light source stability, light power meter precision and the measuring process, and measuring accuracy is difficult to improve the measurement result poor repeatability.
(2) measurement efficient is low.
Calculate from the measuring light power to the transmissivity and be manual method, the loaded down with trivial details efficient of process is low.
Summary of the invention
In order to solve problems of the prior art, the invention provides a kind of Laser Initiating Device light window transmissivity tester, this tester can well overcome of the prior art because the measuring accuracy that the manual method measurement causes is low and inefficient problem, realizes accuracy, the high efficiency measured.
The technical scheme that technical solution problem of the present invention adopts is as follows:
Laser Initiating Device light window transmissivity tester, this tester comprises: laser generator, Single Chip Microcomputer (SCM) system, optical fiber splitter, the first photodetector, integrating sphere and the second photodetector; Single Chip Microcomputer (SCM) system is connected with laser generator, the first photodetector and the photodetector of being connected respectively; Optical fiber splitter and laser generator be connected photodetector and be connected; The second photodetector is installed in the integrating sphere.
Inventive principle: when the present invention works, tested initiator light window is inserted the interface of integrating sphere, laser generator sends the single-pulse laser of certain power under the control of Single Chip Microcomputer (SCM) system, be divided into two-way by optical fiber splitter, wherein one the tunnel as reference light, and tester is returned after shining Laser Initiating Device in another road after tested optical cable.Transmitted light with reference to light respectively after photodetector is converted to electric signal, by Single Chip Microcomputer (SCM) system it is carried out analog to digital conversion and numerical evaluation.Because definite by optical fiber splitter with reference to the ratio of light and transmitted light, so transmitted light and be proportional to the ratio of transmitted light and emergent light with reference to the ratio of light, i.e. transmissivity, scale-up factor wherein can be determined when system calibration.
The invention has the beneficial effects as follows: the present invention tests easy, quick, only needs to access sample in test optical fibre cables, and sample is inserted in the integrating sphere input interface, and its transmissivity can record in moment; Measuring accuracy is high, and test only needs a laser pulse, and is low to the long-time stability requirement of laser instrument; The two-way detector is identical, and anti-common mode interference (floating such as temperature) ability is strong, the test result good reproducibility.
Description of drawings
The structural representation of Fig. 1 Laser Initiating Device light window of the present invention transmissivity tester.
Embodiment
Below in conjunction with drawings and Examples the present invention is described in further details.
As shown in Figure 1, Laser Initiating Device transmissivity tester, this tester 1 comprises: power supply 2, Single Chip Microcomputer (SCM) system 3, display 4, keyboard 5, laser generator 6, optical fiber splitter 7, the first photodetector 8, the second photodetector 9, the joints of optical fibre 10 and integrating sphere 13; Single Chip Microcomputer (SCM) system 3 is connected with power supply 2, display 4, keyboard 5, laser generator 6, the first photodetector 8 and the photodetector 9 of being connected respectively; Optical fiber splitter 7 and laser generator 6 be connected photodetector 8 and be connected; The second photodetector 9 is installed in the integrating sphere 13.
In the present embodiment, tested initiator light window 11 is connected on the Laser Initiating Device joint, by power supply 2 power supplies, starts test by keyboard 5, transmissivity can be presented on the display screen 4 in moment, and its detailed process is described below.Laser generator 6 sends the single-pulse laser of power 1W, width 1mS under the control of Single Chip Microcomputer (SCM) system 3, be divided into the two-way light that power ratio is 1:99 by optical fiber splitter 7, wherein a road of 10mW as reference light, another road 990mW is after optical cable 12 shines Laser Initiating Device light window 11 after tested, and transmitted light shines in the second photodetector 9 after integrating sphere 13 decay.Be converted to electric signal with reference to light through the first photodetector 8, transmitted light carries out analog to digital conversion and numerical evaluation by Single Chip Microcomputer (SCM) system 3 to it after the second photodetector 9 is converted to electric signal.Because definite by optical fiber splitter 7 with reference to the ratio of light and transmitted optical power, so transmitted light and be proportional to the ratio of transmitted light and emergent light with reference to the ratio of light, i.e. transmissivity, scale-up factor wherein can be determined when system calibration.So just finished the test of measured laser initiator light window 11 transmissivities.
In the single measurement process, except the plug of Laser Initiating Device light window 11, the calculating from the generation of laser generator 6 pulses to transmissivity, show and altogether be no more than for 1 second that testing efficiency is very high.
Because the single measurement time spent is short, it is low that the light source long-time stability are required, and identical two-way photodetector can the establishment temperature float, so measuring accuracy is high, the measurement result good reproducibility.Through actual measurement, the measuring error of this tester can satisfy the requirement of Laser Initiating Device 6 productions and applying unit fully less than ± 0.05%.
Claims (3)
1. Laser Initiating Device light window transmissivity tester, it is characterized in that this tester comprises: Single Chip Microcomputer (SCM) system (3), laser generator (6), optical fiber splitter (7), the first photodetector (8), the second photodetector (9) and integrating sphere (13); Described Single Chip Microcomputer (SCM) system (3) is connected with laser generator (6), the first photodetector (8) and the photodetector (9) of being connected respectively; Described optical fiber splitter (7) respectively with laser generator (6) be connected photodetector (8) and be connected; Described the second photodetector (9) is installed in the integrating sphere (13), by integrating sphere (13) and the connection of being connected.
2. Laser Initiating Device light window transmissivity tester as claimed in claim 1, it is characterized in that: this tester also comprises: the joints of optical fibre (10), described optical fiber splitter (7) is by the joints of optical fibre (10) and the connection of being connected.
3. Laser Initiating Device light window transmissivity tester as claimed in claim 1, it is characterized in that: this tester also comprises: power supply (2), display (4) and keyboard (5); Described power supply (2), display (4) are connected 5 with keyboard) be connected with Single Chip Microcomputer (SCM) system (3) respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012103137134A CN102854169A (en) | 2012-08-30 | 2012-08-30 | Tester for transmissivity of optical window of laser initiator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012103137134A CN102854169A (en) | 2012-08-30 | 2012-08-30 | Tester for transmissivity of optical window of laser initiator |
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| CN102854169A true CN102854169A (en) | 2013-01-02 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2012103137134A Pending CN102854169A (en) | 2012-08-30 | 2012-08-30 | Tester for transmissivity of optical window of laser initiator |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103398984B (en) * | 2013-07-23 | 2016-01-06 | 中国科学院长春光学精密机械与物理研究所 | The outfield measuring method of photo-electric telescope transmissivity of optical system |
| CN109781671B (en) * | 2019-03-11 | 2021-11-05 | 西北核技术研究所 | Transmission rate on-line test method and device |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| US7375812B2 (en) * | 2005-02-22 | 2008-05-20 | Axsun Technologies, Inc. | Method and system for reducing parasitic spectral noise in tunable semiconductor source spectroscopy system |
| CN102621103A (en) * | 2012-03-09 | 2012-08-01 | 中国科学院长春光学精密机械与物理研究所 | Reflectivity tester for laser exploder |
-
2012
- 2012-08-30 CN CN2012103137134A patent/CN102854169A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7375812B2 (en) * | 2005-02-22 | 2008-05-20 | Axsun Technologies, Inc. | Method and system for reducing parasitic spectral noise in tunable semiconductor source spectroscopy system |
| CN102621103A (en) * | 2012-03-09 | 2012-08-01 | 中国科学院长春光学精密机械与物理研究所 | Reflectivity tester for laser exploder |
Non-Patent Citations (3)
| Title |
|---|
| 刘亚侠等: "线阵TDI CCD遥感相机非均匀性校正的研究", 《光学技术》, vol. 29, no. 6, 30 November 2003 (2003-11-30), pages 749 - 2 * |
| 刘妍妍等: "可见光面阵CCD响应非均匀性的检测与校正", 《液晶与显示》, vol. 25, no. 5, 31 October 2010 (2010-10-31), pages 761 - 1 * |
| 鲍超: "发光二级管测试技术和标准", 《物理》, vol. 32, no. 5, 31 May 2003 (2003-05-31), pages 320 - 2 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103398984B (en) * | 2013-07-23 | 2016-01-06 | 中国科学院长春光学精密机械与物理研究所 | The outfield measuring method of photo-electric telescope transmissivity of optical system |
| CN109781671B (en) * | 2019-03-11 | 2021-11-05 | 西北核技术研究所 | Transmission rate on-line test method and device |
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Application publication date: 20130102 |