红外与激光工程
紅外與激光工程
홍외여격광공정
INFRARED AND LASER ENGINEERING
2013年
11期
2889-2893
,共5页
红外变焦光学系统%光学设计%双孔径%冷反射
紅外變焦光學繫統%光學設計%雙孔徑%冷反射
홍외변초광학계통%광학설계%쌍공경%랭반사
infrared zoom optical system%optical design%dual aperture%narcissus
为了解决红外变焦系统短焦部分冷反射严重的问题,提出了一种双孔径设计方法,设计了一种双孔径红外变焦光学系统。系统工作波段为中波3.7~4.8μm,焦距为30/150/300 mm,10×变倍比,具有100%冷光阑效率。对双孔径系统的短焦部分和单孔径系统短焦部分的冷反射强度进行了对比分析,双孔径系统的冷反射得到有效控制。双孔径红外变焦光学系统具有像质好、变倍比大、短焦冷反射小、结构紧凑的特点,可使大变倍比的红外变焦光学系统在红外成像系统中得到广泛应用。
為瞭解決紅外變焦繫統短焦部分冷反射嚴重的問題,提齣瞭一種雙孔徑設計方法,設計瞭一種雙孔徑紅外變焦光學繫統。繫統工作波段為中波3.7~4.8μm,焦距為30/150/300 mm,10×變倍比,具有100%冷光闌效率。對雙孔徑繫統的短焦部分和單孔徑繫統短焦部分的冷反射彊度進行瞭對比分析,雙孔徑繫統的冷反射得到有效控製。雙孔徑紅外變焦光學繫統具有像質好、變倍比大、短焦冷反射小、結構緊湊的特點,可使大變倍比的紅外變焦光學繫統在紅外成像繫統中得到廣汎應用。
위료해결홍외변초계통단초부분랭반사엄중적문제,제출료일충쌍공경설계방법,설계료일충쌍공경홍외변초광학계통。계통공작파단위중파3.7~4.8μm,초거위30/150/300 mm,10×변배비,구유100%랭광란효솔。대쌍공경계통적단초부분화단공경계통단초부분적랭반사강도진행료대비분석,쌍공경계통적랭반사득도유효공제。쌍공경홍외변초광학계통구유상질호、변배비대、단초랭반사소、결구긴주적특점,가사대변배비적홍외변초광학계통재홍외성상계통중득도엄범응용。
In this paper, the narcissus of short focal length system was analyzed. A method of dual aperture zoom system was propounded, and a dual aperture infrared optical system was designed. The focal length of this zoom system at 3.7-4.8μm was 30 mm、150 mm and 300 mm with a zoom ranger of 10:1, F-number of 4 and 100% cold efficiency. The narcissus between dual aperture and normal single aperture was analyzed and compared,and the narcissus of dual aperture can be controlled preferably. The dual aperture zoom system has good image quality, big zoom range, low narcissus of small focal lens and compact configuration, so it can be used in the high thermal imager widely.