摘要
针对红外目标探测等军事应用的实际需求,为了扩大对目标的搜索范围,设计了8～12 m红外波段的20×连续变焦光学系统。该系统采用320×240非制冷焦平面红外探测器,在15～300 mm范围内实现连续变焦,F数为2。系统结构简单,仅由6片透镜组成,并仅引入1个非球面校正系统像差。在空间频率为16 lp/mm处,变焦范围内的MTF调制传递函数均在0.45以上,接近衍射极限,像质优良,像面稳定,可用于坦克红外观瞄系统。
Aiming at actual needs of infrared target detection and other military applications, in order to expand the search scope of targets,an infrared continuous zoom optical system of 20× zoom ratio for 8-12μm wave-band is designed in this paper. For 320×240 pixels uncooled infrared focal plane arrays, the focal length from 15 to 300 mm could be changed continuously and the F number is 2. Moreover, the system＇s structure is simple, which only consists of six lenses and one aspherical surface is applied to correct aberrations. At the spatial frequency 16 lp/mm, the MTF curves in the whole zooming range are all above 0.45 which are closed to diffraction limited curve. The image quality is perfect and the stability of image plane is well. Meanwhile, this system can be applied to infrared observing and aiming optical system of Tank.
出处
《红外技术》
CSCD
北大核心
2013年第10期607-611,共5页
Infrared Technology
基金
总装备部预研局"十二五"基金项目
关键词
光学设计
红外变焦系统
机械补偿
高变倍比
非球面
optical design, infrared zoom system, mechanical compensation, high zoom ratio,aspherical surface
