红外与激光工程
紅外與激光工程
홍외여격광공정
INFRARED AND LASER ENGINEERING
2014年
9期
2964-2969
,共6页
紫外告警%“日盲”紫外光学系统%非球面%二元衍射光学元件%点扩散函数%像质
紫外告警%“日盲”紫外光學繫統%非毬麵%二元衍射光學元件%點擴散函數%像質
자외고경%“일맹”자외광학계통%비구면%이원연사광학원건%점확산함수%상질
ultraviolet warning%solar-blind UV optical system%aspheric surface%binary element%point spread function%image quality
紫外告警技术在军事应用中扮演着重要的角色。基于“日盲”紫外光学系统的最佳工作波段240~280 nm ，设计了一款用于导弹逼近告警的光学系统。为提高系统接收的紫外辐射能、扩展系统探测范围以及简化系统结构，系统中采用了非球面和二元衍射光学元件。系统中含有5片透镜，其焦距为50 mm，视场角为43°。探测器采用ANDOR公司的iKon-L 936型CCD，其像元大小为13.5μm×13.5μm，有效成像面积为27.6 mm×27.6 mm。系统优化后，最大RMS半径仅为11μm左右，远小于像元尺寸。超过86%来自物方各视场的紫外辐射会聚在半径为6.75μm的圆内。像质表明，所设计的系统能够满足“日盲”紫外光学系统的工作条件。若减小焦距，则系统的视场角可进一步增大。
紫外告警技術在軍事應用中扮縯著重要的角色。基于“日盲”紫外光學繫統的最佳工作波段240~280 nm ，設計瞭一款用于導彈逼近告警的光學繫統。為提高繫統接收的紫外輻射能、擴展繫統探測範圍以及簡化繫統結構，繫統中採用瞭非毬麵和二元衍射光學元件。繫統中含有5片透鏡，其焦距為50 mm，視場角為43°。探測器採用ANDOR公司的iKon-L 936型CCD，其像元大小為13.5μm×13.5μm，有效成像麵積為27.6 mm×27.6 mm。繫統優化後，最大RMS半徑僅為11μm左右，遠小于像元呎吋。超過86%來自物方各視場的紫外輻射會聚在半徑為6.75μm的圓內。像質錶明，所設計的繫統能夠滿足“日盲”紫外光學繫統的工作條件。若減小焦距，則繫統的視場角可進一步增大。
자외고경기술재군사응용중분연착중요적각색。기우“일맹”자외광학계통적최가공작파단240~280 nm ，설계료일관용우도탄핍근고경적광학계통。위제고계통접수적자외복사능、확전계통탐측범위이급간화계통결구，계통중채용료비구면화이원연사광학원건。계통중함유5편투경，기초거위50 mm，시장각위43°。탐측기채용ANDOR공사적iKon-L 936형CCD，기상원대소위13.5μm×13.5μm，유효성상면적위27.6 mm×27.6 mm。계통우화후，최대RMS반경부위11μm좌우，원소우상원척촌。초과86%래자물방각시장적자외복사회취재반경위6.75μm적원내。상질표명，소설계적계통능구만족“일맹”자외광학계통적공작조건。약감소초거，칙계통적시장각가진일보증대。
Ultraviolet (UV) warning technology is playing a very important roll in the field of military application. Based on the optimal working waveband of solar-blind UV optical system from 240 nm to 280 nm, an optical system was designed for missile approach warning. To enhance the received light energy, expand the detection range and simplify the system structure, aspheric surfaces and binary elements were adopted in the system. Only five elements were used to realize the focal length 50 mm and field of view (FOV) 43 degrees. iKon-L 936 from ANDOR company was selected as the UV detector, which has pixel size 13.5μm×13.5μm and active image area 27.6 mm×27.6 mm. After optimization, the maximum RMS radius is only about 11 microns, which is much less than pixel size of the detector and more than 86% of the light energy from each FOV is converged within the circle of radius 6.75 microns. The image quality shows the designed system can meet the working requirements of solar-blind UV optical system. If the focal length can be decreased, the FOV of the system can be enlarged further.
