微光彩色夜视光学系统设计与像质评价  

Optical design for low-level-light color night vision system and its image quality evaluation

作　　者：蔡占恩[1,2] 刘朝晖[1] 黄静[1,2] 牛金星[1,2] 

机构地区：[1]中国科学院西安光学精密机械研究所,陕西西安710119 [2]中国科学院研究生院,北京100039

出　　处：《应用光学》2010年第5期695-700,共6页Journal of Applied Optics

摘　　要：为了充分利用可见光和长波红外所蕴含的不同信息进行数据融合、彩色显示,分析了3种不同类型双波段光学系统及其成像性能,设计了全折射光学系统、折反射光学系统和离轴三反射双谱光学系统。采用不同的分光形式,反射可见光波段,透射长波红外波段,使3种不同类型光学系统的全视场角和相对孔径分别为5°和1∶1.7;光学系统在可见光波段成像质量对应的空间频率50 lp/mm处的MTF=0.60,在长波红外波段成像质量对应的空间频率15 lp/mm处的MTF=0.30。对不同结构类型的系统特点进行分析和讨论,给出了各种像差曲线和光学传递函数曲线,为多波段彩色夜视设计了不同类型的光学系统。In order to use visible and long wave infrared information for image fusion and color display,three dual-band imaging optical systems and theirs imaging performance were analyzed.All-refractive optical system,catadioptric optical system and off-axis three-reflection dual spectrum optical system were designed.A beam splitter was adopted to reflect visible and transmit LW infrared.Its full field of view and relative aperture are up to 5° and F/1.7,and MTF is higher than 0.60 at 50 lp/mm in the visible region,higher than 0.30 at 18lp/mm in the LWIR region.The construction features of the lens are discussed,the aberration curves and MTF curves of the system are presented.

关 键 词：夜视光学系统 微光彩色 双波段 光学设计 

分 类 号：TN22[电子电信—物理电子学]