一种离轴抛物面准直光管的设计  

Design of the Off-axis Collimator

作　　者：顾小超[1] 胡雯雯[1] 黄丽俐[1] 杨志文[1] 

机构地区：[1]长春理工大学光电工程学院,吉林长春130022

出　　处：《激光与红外》2008年第5期472-473,共2页Laser & Infrared

摘　　要：论述了一种用于为某可靠性测试设备提供红外模拟目标源的离轴抛物面准直光管系统的结构选择。按照焦距f=960mm,相对孔径1∶6,视场0.6,°工作谱段0.8～1.4μm的技术要求,对准直光管的光学系统进行了设计。反射式光学系统,能做到大口径和无色差及轻量化设计,系统光利用率高。因系统要求中心无遮拦,故选用离轴抛物面式准直系统。为进一步改善系统像质,采用了离轴高次抛物面式主反射镜与次反射镜以及补偿透镜组的设计方案。模拟实验表明,此准直光管的主要性能满足使用要求。A kind of off-axis parabolic collimator acted as infrared target source was introduced.According to the system specific requirements.The focal length f=960mm,relative aperture 1∶6,field of view 0.6°,wave length 0.8～1.4μm,the optical system was designed.Reflective optical system which can be made big aperture,light weight.Reflective optical system also do not produce chromatic-aberration.Because the system can not exist center block,the off-axis parabolic system is chosen.In order to improve image quality.The system is composed of primary high order off-axis parabolic,secondary fiat mirror and compensated lens.This design of the off-axis collimator has the practical value.

关 键 词：准直光管 结构设计 离轴抛物面 高次非球面 

分 类 号：TH741.14[机械工程—光学工程]