单视点红外折反射全向成像系统参数设计

Parameters Design for Single Viewpoint Infrared Omnidirectional View Sensors

提出了单视点约束红外折反射全向成像系统单次成像实现全视场(FOV)清晰的一种参数设计优化方法。根据应用需求设计出符合单视点约束的初始系统参数;提出镜面虚景深的概念优化折射光学组参数。利用ZEMAX软件的理想系统仿真验证了所提出的设计方法实现系统全视场清晰成像的可行性,并且该设计方法能同时满足视场范围和轴向尺寸等方面的要求。从仿真结果还可知,大口径反射镜镜面有利于提高光学系统成像质量,而增大曲面离心率有利于减小系统轴向尺寸。

A method of parameters design and optimization for single viewpoint infrared catadioptric omnidirectional imaging system to obtain sharp image for the whole field of view （FOV） by single shot is proposed. The initial system parameters are designed to meet single viewpoint constraint according to the application requirements. A concept of virtual depth of field in mirror is proposed to optimize refracted optical group parameters. The proposed method is verified by simulation results using the ideal system of software ZEMAX. Using the method can not only obtain sharp image for the whole FOV, but also meet the requirements like FOV and axial dimension. The simulation results also show that large diameter mirror helps to improve the quality of the image and large surface eccentricity helps to reduce the axial dimension.