两挡变焦光学系统的齐焦设计  

Confocal design for switch-zoom optical system

作　　者：杨利华[1] 李景[1] 陶玉[1] 林晶[1] 孟军合[1] 

机构地区：[1]天津津航技术物理研究所,天津300192

出　　处：《应用光学》2014年第3期386-390,共5页Journal of Applied Optics

摘　　要：受光学材料折射率、光学加工以及光学装校等误差因素的影响,宽视场短焦子系统和窄视场长焦子系统组成的两挡变焦光学系统的实际像面均偏离理想像面即发生像面漂移,但漂移量不同,导致两子系统产生不齐焦现象。为了解决此问题,以某型载荷中波红外两挡变焦光学系统设计为例,分析齐焦设计时定长焦调短焦和定短焦调长焦两种设计方案的优缺点。比较了定长焦调短焦3种方法,即调变倍组与补偿组、调变倍组和调补偿组的补偿量与长焦焦距变化情况,定短焦调长焦3种方法,即调变倍组与补偿组、调变倍组和调补偿组的补偿量与短焦焦距变化情况,指出定长焦调短焦、单调补偿组的齐焦设计方案为最优方案。Switch-zoom optical system is composed of the subsystem with wide field of view and the subsystem with narrow field of view .Due to the errors from many aspects such as the re-fractive index of optical material ,the optical manufacturing and assembling ,the actual image surfaces of both subsystem deviate from their ideal image surfaces ,and the drifts are different , that is ,the two subsystems are not confocal .To solve the problem ,a variety of confocal de-sign schemes ,the selection principle and an optimal scheme w hich fixed long focus and adjus-ted short focus ,adjusted the compensating set for a mid-wave infrared (MWIR) switch-zoom optical system were given .

关 键 词：两挡变焦 齐焦 短焦 长焦 

分 类 号：TH74[机械工程—光学工程]