电光与控制, 2015, 22 (8): 87, 网络出版: 2015-08-25  

红外目标模拟器消热差光学系统设计

Design of an Athermalized Projection Optical System for Infrared Target Simulator
作者单位
西北工业大学航天学院, 西安 710072
摘要
基于红外目标模拟器的成像特点,以改进型柯克式系统为初始结构,设计一套大视场中波红外消热差光学系统;该光学系统视场30°,出瞳距300 mm,最大口径220 mm,焦距240 mm,基于光学被动消热差原理,采用一片非球面透镜,通过选择合适的玻璃及光焦度,设计的镜头在-40~60 ℃的环境下空间频率16 lp/mm时MTF优于0.4,有很好的热稳定性和成像质量,结构简单、加工方便,有很强的工程实用性.
Abstract
Based on the imaging characteristics of the infrared target simulator,a wide field-of-view (FOV) medium-wave infrared heat dissipation differential optical system was designed taking the improved Cooke type system as the initial structure.The optical system has an FOV of 30°,an exit pupil of 300 mm,an maximum diameter of 220 mm,and the focal length of 240 mm.Based on the principle of optical passive athermalization,a piece of aspheric lens is used.By choosing appropriate glass and focal power,the lens has an MTF superior to 0.4 under the environment of -40~60 ℃ at spatial frequency of 16 lp/mm,and also has good thermal stability and imaging quality,simple structure,and very strong practicability.

张晓晖, 梁志毅, 常青. 红外目标模拟器消热差光学系统设计[J]. 电光与控制, 2015, 22(8): 87. ZHANG Xiao-hui, LIANG Zhi-yi, CHANG Qing. Design of an Athermalized Projection Optical System for Infrared Target Simulator[J]. Electronics Optics & Control, 2015, 22(8): 87.

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