日盲紫外告警光学系统设计  

Design of Solar Blind Ultraviolet Warning Optical System

作　　者：宋珊珊[1] 林丽娜[1] 王文生[1] 

机构地区：[1]长春理工大学现代光学测试技术研究室,吉林长春130022

出　　处：《激光与光电子学进展》2013年第10期164-170,共7页Laser & Optoelectronics Progress

基　　金：总装备部预研局十二五基金(5131XXX103)

摘　　要：紫外告警技术在导弹逼近告警中有重要的应用。针对工作波长范围为240～280nm的日盲区紫外波段，基于用户需求，设计了一种日盲紫外告警光学系统。该系统为了提高接收的光通量、扩大搜索范围、简化系统结构，在国内现有的相对孔径为1：4、视场角为30°、6片透镜的基础上，采用非球面和二元光学元件，简化到5片透镜，并使视场角扩大到40°，相对孔径扩大到1：3。接收器采用PIXIS型2048BUV紫外CCD，像素尺寸为13．5μm×13．5μm。像质评价结果表明，该系统的能量集中度高，弥散斑尺寸小于CCD的像素尺寸，满足系统使用要求。其具有大视场角和大相对孔径特性，技术指标优于现有的日盲紫外告警光学系统。Ultraviolet （UV） warning technology has been widely applied in missile approach warning. According to the user requirement, a solar blind UV warning optical system is designed for the wavelength range from 240 280 nm. In order to improve the luminous flux, expand the search scope and simplify system structure, an aspherical surface and binary optical elements are used. The initial optical data are based on the existing design that has a relative aperture of 1：4, the field of view of 30°, and consists of 6 pieces of lenses. As a result, the optical system is reduced to five pieces of lenses, the field of view is extended to 40°, and the relative aperture is increased to 1：3. PIXIS 2048BUV UV CCD whose pixel size is 13.5 μm）〈 13.5 μm is applied as the detector. Image quality evaluation results show that this solar blind UV warning optical system is of high energy concentration, and the spot size is smaller than the pixel size of CCD, which satisfy the application requirements. The system has the advantages of large field of view and large relative aperture, and its technical characteristics are superior to the existing solar blind UV warning optical systems.

关 键 词：光学设计 日盲紫外 紫外告警系统 非球面 二元光学元件 点扩展函数 

分 类 号：TN23[电子电信—物理电子学]