主动照明光学系统设计 -

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主动照明光学系统设计

doi:10.3788/CO.20160903.0342

中国科学院长春光学精密机械与物理研究所, 吉林长春 130033

基金项目:

国家高技术研究发展计划(863计划)资助项目No.2014AA7031082A

详细信息

通讯作者:
刘韬(1989-),男,吉林长春人,硕士,研究实习员,2012年于北京理工大学获得硕士学位,主要从事光学系统设计方面的研究。E-mail:liutaosd123@126.com

中图分类号:TN202
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- 被引次数:0
出版历程
- 收稿日期:2016-01-18
- 修回日期:2016-02-13
- 刊出日期:2016-01-25

Design of laser active illumination optical system

Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, Changchun 130033, China

Funds:

Supported by National High-tech R&D Program of ChinaNo.2014AA7031082A

摘要

摘要:为提高跟踪测量系统对暗弱目标的探测能力,设计一套自动化主动照明光学系统,对跟踪测量视场范围进行主动辅助照明。该系统在0.2~5 km距离处的照明直径均为10 m,计算出其在-20℃及+45℃的温度调焦量,照明仿真结果表明系统照明不均匀性<15%。通过研究系统像差对照明均匀性的影响,以及对设计的调光组进行分析,得到调光组移动量与照明距离之间的理论关系,表明自动调节调光组位置即可实现不同照明距离处的均匀照明。设计和分析结果表明,该主动照明系统能够自动调节调光组位置,实现跟踪测量视场内的均匀照明,有利于跟踪测量系统对于暗弱目标的探测。
- 主动照明/
- 自动化/
- 照度均匀
Abstract:In order to improve detection ability of tracking system for the dim target, a set of automatic laser active illumination system is designed for actively illuminating the view field of tracking and measurement. The illumination diameter is always 10 meters at a distance of 0.2 km to 5 km away from the system. The amount of focusing group movement at -20℃ and 45℃ is given. The simulation results show that the illumination nonuniformity is less than 15%. By analyzing the optical aberration effects on the illumination uniformity and designed dimming group, the theoretical relationship between the dimming group movement and the illumination distance is gotten. The design result shows that the illumination in different distances will be uniform by adjusting the dimming group position automatically. The design and analysis results show that laser active illumination system can accomplish uniform illumination for the view field of tracking and measurement by moving the dimming group, which is beneficial for the dim target detection and measurement.
- laser active illumination/
- automation/
- uniform illumination

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图 1 主动成像系统示意图

Figure 1.Schematic diagram of laser active imaging system

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图 2 主动照明光学系统结构图

Figure 2.Structure of laser active illumination system

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图 3不同距离处照度分布情况

Figure 3.Illumination distribution at different distances

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图 4调光组移动量与照明距离关系曲线

Figure 4.Relation curves between the dimming group movement and illumination distances

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图 5各照明距离对应系统波像差

Figure 5.Wave aberration RMS at different illumination distances

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图 6照明距离为0.78 km处照度分布情况

Figure 6.Illumination distribution with the illumination distance of 0.78 km

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图 7检测位置公差分析后MTF变化情况

Figure 7.MTF change of test position after tolerance analysis

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图 8照明系统结构

Figure 8.Mechanical structure of illumination system

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表 1照明距离与照明孔径角关系

Table 1.Relation between illumination distance and aperture angle

照射距离/km	照明发散角度θ/mrad	孔径角θ₁/mrad
5	2	0
3	10/3	4/3
1	10	8
0.5	20	18
0.2	50	48

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表 2不同距离处照明分布情况

Table 2.Illumination distribution at different distances

照明距离/km	10 m内接收功率/W	均匀照明直径/m	均匀区域平均照明功率/(W·m^-2)	照明不均匀性/%
5.0	48.65	9.8	0.64	8.0
1.0	50.00	7.6	0.78	13.4
0.2	48.4	9.7	0.65	9.5

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表 3不同距离处温度调焦情况

Table 3.Temperature focusing at different distances

照明距离/km	温度/℃	温度调焦量/mm
5	+45	+0.150
	-20	-0.245
1	+45	+0.144
	-20	-0.221
0.2	+45	+0.107
	-20	-0.175

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表 4理论调光组移动量与CODE V仿真结果对比表

Table 4.Contrast results of the dimming group theoretical movement and CODE V simulation

照明距离/km	理论移动量/mm	仿真结果/mm	偏差值/mm
5	0	0.010 36	0.010 36
4	0.225 4	0.235 6	0.010 2
3	0.601 1	0.599 0	-0.002 1
2	1.352 6	1.351 2	-0.001 4
1	3.606 9	3.602 0	-0.004 9
0.2	21.741 1	21.744 4	0.003 3

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参考文献 (15)

[1]	赵建川,王弟男,陈长青,等.红外主动成像和识别[J].中国光学,2013,6(5):795-802. ZHAO J CH,WANG D N,CHEN CH Q,et al. Infrared laser active imaging and recognition technology[J]. Chinese Optics,2013,6(5):795-802.(in Chinese)
[2]	朱海波,张晟翀,杨海波. 主动成像系统设计[J].红外与工程,2008,37(S3):93-94. ZHU H B,ZHANG SH CH,YANG H B. System design of laser active imaging[J]. Infrared and Laser Engineering,2008,37(S3):93-94.(in Chinese)
[3]	董明礼,张晶,李银柱,等. 辅助照明主动红外成像研究[J].红外技术,2006,28(2):91-94. DONG M L,ZHANG J,LI Y ZH,et al. Study on active IR imaging with laser illumination[J]. Infrared Technology,2006,28(2):91-94.(in Chinese)
[4]	李波,王挺峰,王弟男,等. 大气传输湍流扰动仿真技术[J].中国光学,2012,5 (3):289-295. LI B,WANG T F,WANG D N,et al. Simulation of laser beam propagation through turbulence[J]. Chinese Optics,2012,5(3):289-295.(in Chinese)
[5]	王森,潘玉寨,刘一,等.提高雾天主动成像图像质量的研究[J].红外与工程,2013,42(9):2392-2396. WANG S,PAN Y Z,LIU Y,et al. Image quality improvement of laser active imaging in fog[J]. Infrared and Laser Engineering,2013,42(9):2392-2396.(in Chinese)
[6]	庞春颍,张涛. 主动成像系统信噪比模型的研究[J].光学精密工程,2008,16(2):319-324. PANG CH Y,ZHANG T. Signal-to-noise ratio model of laser active imaging system[J]. Opt. Precision Eng.,2008,16(2):319-324.(in Chinese)
[7]	徐效文.应用主动成像探测小暗目标的技术研究[D].长春:中国科学院长春光学精密机械与物理研究所,2004. XU X W. Study on the technologies for detecting small dark target with laser active imaging[D]. Changchun:Changchun Institute of Optics and Fine Mechanics and Physics, Chinese Academy of Sciences,2004.
[8]	郭惠超,孙华燕,范有臣.大气条件下距离选通主动成像技术发展现状[J]. 与光电子学进展,2013(10):25-35. GUO H CH,SUN H Y,FAN Y CH. Development status of range-gated laser active imaging technology under atmospheric condition[J]. Laser & Optoelectronics Progress,2013(10):25-35.(in Chinese)
[9]	王锐. 距离选通成像门宽对图像信噪比影响[J].中国光学,2015,6:951-956. WANG R. Effect of gate width of laser range gating imaging on image SNR[J]. Chinese Optics,2015,6:951-956.(in Chinese)
[10]	高杨,赵兴海,赵翔,等.石英光纤的传能效率、损伤阈值和损伤积累效应研究[J].探测与控制学报,2009,31(1):1-4. GAO Y,ZHAO X H,ZHAO X,et al. A study on power delivery efficiency laser,laser induced damage threshold and damage accumulation effect of silica fiber[J]. J. Detection Control,2009,31(1):1-4.(in Chinese)
[11]	王景奕,毕瑞丰.光纤耦合技术在红外照明器上的应用[J].科学技术与工程,2014,14(11):200-205. WANG J Y,BI R F. Optical fiber coupling technology in infrared laser illuminator[J]. Science Technology and Engineering,2014,14(11):200-205.(in Chinese)
[12]	朱云青,徐明泉,张振远,等.光纤照明系统的光斑匀化技术研究[J].玻璃纤维,2015,2(2):29-34. ZHU Y Q, XU M Q,ZHANG ZH Y,et al. Study on light spot homogenization in fiber-optic illumination system[J]. Fiber Glass,2015,2(2):29-34.(in Chinese)
[13]	王英顺,连洁,高尚,等.近红外照明器均匀性评价技术研究[J].光子学报,2013,42(3):258-261. WANG Y SH,LIAN J,GAO SH,et al. Illumination uniformity of near infrared illuminator[J]. Acta Photonica Sinica,2013,42(3):258-261.(in Chinese)
[14]	牛磊,李湘宁,隋峰.新型投影显示照明系统设计[J].光电工程,2015,42(3):77-82. NIU L,LI X N,SUI F. The illumination system design for new laser projection display[J]. Opto-Electronic Engineering,2015,42(3):77-82.(in Chinese)
[15]	张培茗,陈家壁,杨雪,等.用于人眼波前像差测量的照明系统设计[J].光学精密工程,2009,17(9):2084-2090. ZHANG P M,CHEN J B,YANG X,et al. Illumination system design for ocular wavefront aberration measurement[J]. Opt. Precision Eng.,2009,17(9):2084-2090.(in Chinese)