杂光对三线阵相机光学系统成像的影响

针对高成像质量三线阵测绘相机杂光导致相机成像质量下降的问题,文章根据光学系统的设计结果,对相机的杂光系数进行分析与计算,提出合理的杂光抑制措施;利用ZEMAX软件和LightTools软件,分析了杂光对三线阵立体测绘相机成像的影响,通过模拟计算得到杂光系数小于5%的理论结果;实验检测了相机实际杂光系数,得到最大杂光系数小于6%的实测结果,模拟了杂光影响下的光学系统图像,证明了杂光抑制措施的有效性和杂光影响下成像分析的合理性。

Impact of Stray Light on Image of Three Line Array Camera

The optical system, with high image quality and low distortion can ensure the high mapping precision. The quality of the optical system can be reduced by the effect of stray light. The effect of the stray light is analyzed according as the result of the optical design and the restraining method is putted forward to reduce stray light. The image of three line array mapping camera with stray light is analyzed by using the software LightTools and ZEMAX, the theoretical result of stray light coefficients is less than 5%. The stray light coefficients of each system are tested, and the largest stray light coefficient is less than 6%. The simulated image of optical system with tested result shows the correction of image analyzing with stray light and the feasibility of the stray light restraining methods.