大孔径、大视场辅助驾驶仪红外镜头无热化设计
Athermal Design of a Large-aperture, Wide-field Assisting Pilot Infrared Lens
北方夜视科技集团有限公司, 云南 昆明 650223
摘要
论述了无热化设计的种类和光学被动式无热化设计的基本原理。使用光学被动式无热化设计方案, 设计了一款工作波段为 8~12 μm、焦距 f′=16.5 mm、F#=0.8、视场为 36.5°×27.8°的大孔径、大视场辅助驾驶无热化红外镜头。此镜头体积小、重量轻、结构简单, 适用于辅助驾驶系统。此红外镜头在-40℃~60℃的工作温度范围内, 无需调焦, 能自动消除热差影响, 始终保证成像清晰。经过寒区(低温)试验, 满足无热化设计的需要。
Abstract
This paper discusses the types of athermal design and the basic principle of optical passive athermal design. By the optical passive athermal design program, a large-aperture, wide-field assisting pilot athermal infrared lens is designed with bandwidth of 8~12 μm, focal length f′=16.5 mm, F#=0.8, and the field of view 36.5°×27.8°. This type of lens is characterized by small volume, light weight and simple structure which is suitable for assisting pilot system. In addition, there is no necessity to focus the infrared lens under the operating temperature range of -40℃~60℃, because it can automatically eliminate the impact of thermal difference and always guarantee the clear image. Besides, it can meet the needs of athermal design through the cold region(low-temperature)test.
参考文献
[1] 徐大维, 向阳, 王建, 等.折衍混合车载红外镜头无热化设计[J]. 红外技术, 2011, 33(8): 460-464.
[2] Allen Mann. Infrared Optics and Zoom Lenses[M]. 2009, Bellingham, Washington USA: SPIE.
[3] 王远方舟, 白玉琢, 贾钰超, 等. 一种长波红外光学消热差系统设计 [J].红外技术, 2012, 34(9): 531-534.
[4] 白玉琢, 元延婷, 程海娟, 等. 机械补偿式红外温度自适应光机系统的设计[J].红外技术, 2012, 34(11): 652-656.
[5] 白玉琢, 马琳, 王远方舟, 等. 单片式红外中波温度自适应光学系统设计[J].红外技术, 2011, 33(11): 646-650.
[6] 孙强, 王肇圻, 李凤友, 等. 含有谐衍射元件的红外双波段减热差系统设计[J].科学通报, 2003, 48(6): 557-561.
[7] 张轶楠, 王肇圻, 孙强. 折/衍混合红外物镜的超宽温度消热差设计 [J].中国激光, 2005, 32(3): 0258-7025.
[8] Yasuhisa Tamagawa, Toru Tajime. Expansion of an at hermal chart intoa multilens system with thick lenses spaced apart[J]. Opt. Eng., 1996, 35(10): 3001-3006.
[9] 焦明印, 冯卓祥. 采用衍射元件实现消热差的混合红外光学系统 [J].光学学报, 2001, 21(11): 1364-1367.
孙爱平, 龚杨云, 陈忠, 安长亮, 皮冬明, 铁筱滢, 杨毕春. 大孔径、大视场辅助驾驶仪红外镜头无热化设计[J]. 红外技术, 2013, 35(10): 617. SUN Ai-ping, GONG Yang-yun, CHEN Zhong, AN Chang-liang, PI Dong-ming, TIE Xiao-ying, YANG Bi-chun. Athermal Design of a Large-aperture, Wide-field Assisting Pilot Infrared Lens[J]. Infrared Technology, 2013, 35(10): 617.