红外双波段双视场消热差光学系统设计中消波段间色差条件(方法)的研究  

Methods of Correcting Between-Band Chromatic Aberration in Infrared Dual-Band Dual-Field of View Athermalized Optical Design

作　　者：曲锐[1] 邓键[1] 

机构地区：[1]西南技术物理研究所,四川成都610041

出　　处：《光学学报》2015年第1期363-369,共7页Acta Optica Sinica

摘　　要：通过推导两个波段间由于色散特性差异导致的波段间色差,得到了描述波段间色散能力的波段间色差系数P,并结合光学系统光焦度方程、消色差方程和消热差方程,讨论了考虑材料波段间色散能力的消热差色差系统设计方法,完成了一个共光路红外双波段双视场光学系统的无热化设计。该系统F数为2、焦距为150 mm/50 mm、波长范围为3.7～4.8μm和7.7～10.3μm,共含有8片透镜,3个非球面,在-40℃～60℃温度范围内,各视场均具有较好的成像质量和冷反射特性。The between-band chromatic dispersive power P is derived from the derivation of between-band chromatic aberration. A new achrothermal model considering the between-band chromatic aberration is prompted.Then, method of athermalized and multi-band zoom optical system is discussed. Based on this achrothermal model,a dual-band（MWIR/LWIR） dual-field of view optical system under the requirements of F=2, 150 mm/50 mm focal length, 3.7~4.8 mm and 7.7~10.3 mm waveband is designed with optical passive athermalization technology. The optical system, which consists of 8 lenses and 3 aspheric surfaces, has good image quality and Narcissus character at each field of view at-40 ℃~60 ℃.

关 键 词：光学设计 红外技术 双波段 双视场 消热差 

分 类 号：O436[机械工程—光学工程]