基于原向反射式激光光幕厚度一致性研究

褚文博; 赵冬娥; 张斌; 陈宇轩

doi:doi:10.5768/jao201940.0201009

应用光学, 2019, 40 (2): 233, 网络出版: 2019-03-26

基于原向反射式激光光幕厚度一致性研究

Study on thickness consistency of primary reflection laser screen

论文大纲

褚文博 ^*赵冬娥张斌陈宇轩

作者单位

中北大学电子测试技术国防科技重点实验室, 山西太原 030000

激光光幕高斯光束准直一维扩束 laser light curtain Gaussian beam collimation one dimensional beam expanding Zemax Zemax

摘要

在原向反射式激光光幕测速技术中, 针对半导体激光光源产生的激光光束散射角使得出射光幕厚度不一致、原向反射屏产生的反射光幕剩余发散角使反射光幕厚度不一致这两方面导致弹丸穿过光幕不同位置触发光幕响应时间不一致的问题, 根据几何光学原理, 对半导体激光器弧矢与子午方向建立数学模型, 设计了具有不同面型的非球面准直透镜组, 将出射光斑尺寸控制在1 mm之内且子午和弧矢方向发散角分别为0.13 mrad、0.46 mrad。出射光束经过Powell透镜一维扩束后, 形成厚度为1 mm、均匀度达到85.7%的扇形出射光幕, 经过原向反射后, 配合狭缝光阑使反射光幕有效厚度控制在1 mm。使用Zemax软件模拟弹丸过靶仿真, 弹丸不遮挡系统光幕时探测器接收到原向反射光强1.54 mW, 弹丸遮挡系统光幕时探测器接收到原向反射光强为1.03 mW。当弹丸紧贴出射光幕侧面边缘(即1 mm光幕边缘), 分别距离光源100 mm、300 mm、500 mm处的弹丸触发探测器接收到的光强大小均为1.54 mW, 显然, 光强相对于无弹丸遮挡光幕情况下没有产生变化, 证明系统有效可探测光幕厚度一致且为1 mm。该结果表明, 本研究方案具有可行性。

Abstract

In the primary reflection type laser screen velocity measuring technique, the scattering angle of the laser beam generated by the semiconductor laser source makes the thickness of the emergent optic screen inconsistent, and the residual divergence angle of the reflected optic screen generated by the primary reflective screen makes the thickness of the reflected optic screen inconsistent, the two aspects from which lead to the problem that the projectile passing through different positions of the optic screen to trigger the response time of the optic screen inconsistent. According to the geometrical optics principle, the mathematical model of the sagittal and meridional directions of the semiconductor laser was established, and the aspherical collimating lens groups with different surface figures were designed, the size of the exit spot was controlled within 1 mm and the divergence angles of the meridional and sagittal directions were 0.13 mrad and 0.46 mrad, respectively. After the exit beam was one-dimensionally expanded by the Powell lens, a fan-shaped exit light screen with a thickness of 1 mm and a uniformity of 85.7% was formed. And after the original reflection, the effective thickness of the reflected light curtain was effectively controlled to 1 mm with the slit aperture. Moreover, the Zemax software was used to simulate the projectile passing throuth the screen. When the projectile did not block the system laser screen, the detector received the original reflected light intensity of 1.54 mW; when the projectile blocked the system laser screen, the detector received the original reflected light intensity of 1.03 mW; when the projectile was close to the side edge of the exit laser screen (ie, 1 mm from the screen edge ), the light intensity received by the projectile trigger detector respectively at 100 mm, 300 mm, and 500 mm from the light source was all 1.54 mW. Obviously, there is no change in light intensity relative to the absence of the projectile blocking laser screen, which proves that the effective detectable optic screen thickness of the system is consistent and 1 mm. This result indicates that the research scheme is feasible.

参考文献

[1] ZHAO Donge, ZHOU Hanchang, LIU Ji, et al. High-precision velocity measuring system for projectiles based on retroreflective laser screen［J］. Optik-International Journal for Light and Electron Optics, 2013, 124(6): 544-548.

[2] 刘吉, 于丽霞, 张斌, 等.基于爆炸火光光谱分析的大当量爆炸场破片速度测试方法研究［J］.光谱学与光谱分析, 2016, 36(03): 631-634.

LIU Ji, YU Lixia, ZHANG Bin, et al. A method for testing the fragment velocity of large yield explosion field based on flame spectrum analysis［J］. Spectroscopy and Spectral Analysis, 2016, 36(03): 631-634.

[3] 高芬, 安莹, 倪晋平, 等.红外测速光幕靶改进及测量精度分析［J］.西安工业大学学报, 2010, 30(03): 205-209.

GAO Fen, AN Ying, NI Jinping, et al. Improvement of infrared velocity light screen and analysis of measurement accuracy［J］. Journal of Xi′an Technological University, 2010, 30(03): 205-209.

[4] ZHAO Donge, ZHOU Hangchang. Projectile velocity measurement technology based on large effective area laser screen ［J］. Journal of Test and Measurement,2005,19(04): 416-419.

[5] 蔡荣立, 倪晋平, 田会.光幕靶技术研究进展［J］.西安工业大学学报, 2013, 33(08): 603-610.

CAI Rongli, NI Jinping, TIAN Hui. Advances in optical screen technology research［J］. Journal of Xi′an Technological University, 2013, 33(08): 603-610.

[6] 章晓眉, 赵冬娥, 丁江霞.原向反射屏剩余发散角测试［J］.应用光学, 2011, 32(6): 1197-1201.

ZHANG Xiaomei, ZHAO Donge, DING Jiangxia. Test the residual divergence angle of the original reflector［J］. Journal of Applied Optics, 2011, 32(6): 1197-1201.

[7] AUSTIN R, SCHULTZ R. Guide to retroreflection safety principles and retroreflective measurements［EB/OL］. ［2018-08-06］. www.roadvista.com.

[8] LI H, LEI Z. Study and analysis on a new optical detection design method for photo-electric detection target［J］. Sensor Review, 2013, 33(4): 315-322.

[9] IVANOV L A, KISELEV N N, SLUGIN V A,et al.Measuring the retroreflection from glass microspheres and predicting the quality of retroreflective coatings［J］. Journal of Optical Technology,2006,73(01): 29-33.

[10] LIU Ji, ZHAO Donge, ZHOU Hanchang. A novel approach for warhead fragments velocity measurement based on laser screen［J］. Journal of Measurement Science and Instrumentation, 2011, 2(03): 303-306.

[11] CAI Fuhong, TANG Rongnian, WANG Shaowei. A compact line-detection spectrometer with a Powell lens.［J］Optik, 2018,155(05): 267-272.

[12] 李明伟, 于晓晨, 邵晓阳, 等.基于平行玻璃板的半导体激光器阵列光束整形［J］.应用光学, 2013, 34(5): 864-869.

LI Mingwei, YU Xiaochen, SHAO Xiaoyang, et al. Semiconductor laser array beam shaping based on parallel glass plate［J］. Journal of Applied Optics, 2013, 34(5): 864-869.

[13] 方珍珍. 大功率半导体激光器非球面透镜组准直整形技术研究［D］.成都: 电子科技大学, 2017.

FANG Zhenzhen. Study on high power semiconductor laser aspherical lens group collimation shaping technology［D］. Chengdou: University of electronic science and technology, 2017.

[14] 殷智勇, 汪岳峰, 尹韶云, 等.基于双曲面基底微透镜阵列的半导体激光器整形系统设计［J］.中国激光, 2013, 40(06): 125-130.

YIN Zhiyong, WANG Yuefeng, YIN Shaoyun, et al. Design of semiconductor laser shaping system based on hyperboloid substrate microlens array［J］. Chinese Journal of Lasers, 2013, 40(06): 125-130.

[15] 王培芳, 向阳, 高健, 等.激光变倍准直扩束系统设计［J］.光学学报, 2015, 35(09): 282-287.

WANG Peifang, XIANG Yang, GAO Jian, et al. Design of laser beam doubling collimation and beam expanding system［J］. Acta Optica Sinica, 2015, 35(09): 282-287.

褚文博, 赵冬娥, 张斌, 陈宇轩. 基于原向反射式激光光幕厚度一致性研究[J]. 应用光学, 2019, 40(2): 233. CHU Wenbo, ZHAO Donge, ZHANG Bin, CHEN Yuxuan. Study on thickness consistency of primary reflection laser screen[J]. Journal of Applied Optics, 2019, 40(2): 233.

基于原向反射式激光光幕厚度一致性研究

关于本站 Cookie 的使用提示

全站搜索

基于原向反射式激光光幕厚度一致性研究

相关论文

相关资讯

关于本站 Cookie 的使用提示

全站搜索