[1]贺祥清,廖小军,段媛,等.激光/红外共孔径无热化紧凑型光学系统设计[J].红外技术,2020,42(5):461-467.[doi:10.11846/j.issn.1001_8891.202005008]
 HE Xiangqing,LIAO Xiaojun,DUAN Yuan,et al.Common Aperture and Athermalization Design of Compact Laser/Infrared Optical System[J].Infrared Technology,2020,42(5):461-467.[doi:10.11846/j.issn.1001_8891.202005008]
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激光/红外共孔径无热化紧凑型光学系统设计
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《红外技术》[ISSN:1001-8891/CN:CN 53-1053/TN]

卷:
42卷
期数:
2020年第5期
页码:
461-467
栏目:
出版日期:
2020-05-23

文章信息/Info

Title:
Common Aperture and Athermalization Design of Compact Laser/Infrared Optical System

文章编号:
1001-8891(2020)05-0461-07
作者:
贺祥清12廖小军12段媛12张灏烨12
1. 四川长九光电科技有限责任公司;2. 四川九洲电器集团有限责任公司
Author(s):
HE Xiangqing12LIAO Xiaojun12DUAN Yuan12ZHANG Haoye12
1. Sichuan C&J Electrooptical Technology Co., Ltd.;
2. Sichuan Jiuzhou Electric Group Co., Ltd.

关键词:
光学设计激光测距红外成像共孔径被动式消热差紧凑型
Keywords:
optical design laser ranging infrared imaging common aperture passive athermalization compact
分类号:
TN216
DOI:
10.11846/j.issn.1001_8891.202005008
文献标志码:
A
摘要:
基于激光测距和红外目标探测需求,设计了激光/红外共孔径无热化紧凑型光学系统。系统参数设计如下:工作波段为1.064 um激光和7.7~9.3 um长波红外,入瞳直径均为120 mm;激光焦距为800 mm;长波红外焦距为240 mm,F数为2,视场为2.29°×1.83°。选择带有Ritchey-Chretien(RC)反射系统的折反式光学布局,缩短系统纵向尺寸。光学系统共用主镜和次镜,利用次镜实现激光和红外分光。长波红外采用二次成像结构,达到100%冷光阑效率。通过选择合适的光学材料、结构材料和合理分配光焦度,实现了光学被动式消热差。在-50℃~+70℃范围内,激光接收能量集中度高,长波红外成像质量良好,满足实际使用需求。
Abstract:
Based on requirements of laser ranging and infrared target detection, a laser/ infrared compact optical system with a common aperture and athermalization is designed. The parameters of the optical system are defined as follows: the operating waveband covers 1.064 um of laser and 7.7-9.3 um of wavelength infrared radiation (LWIR), the diameters of the two entrance pupils are 120 mm; the focal length of the laser is 800 mm; the focal length of the LWIR is 240 mm, the F-number is 2, the field of view is 2.29°×1.83°. the vertical size of system is shortened by utilizing a catadioptric optical system with RC. The laser system shares the primary mirror and secondary mirror with the LWIR system. The beam splitting of the laser and LWIR is achieved by the secondary mirror. By using the double imaging configuration, the LWIR system exhibits nearly 100% efficiency of the cold stop. Optical passive athermalization is realized by choosing the appropriate optical materials, mechanical materials and assigning the optical power. In the temperature range of -50℃ to 70℃, the energy concentration of the laser receiving optical system is extremely high, and the image quality of the LWIR system is also quite good, which satisfies the requirements of practical applications.

参考文献/References:

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备注/Memo

备注/Memo:
收稿日期:2019-08-16;修订日期:2020-04-10.
作者简介:贺祥清(1978-),男,高级工程师,硕士,研究方向:主要从事光学和光机系统方面的研究工作。E-mail: 53149928@qq.com。

更新日期/Last Update: 2020-05-19