摘要
根据多光谱相机技术指标要求,讨论了空间多光谱相机的光学设计。采用准远心的离轴三反式结构满足测绘用多光谱相机的低畸变要求。考虑加工、装调与检测等因素,将次镜设计成球面,提高了设计的可靠性。优化完成的设计结果相对畸变小于0.012%,成像质量良好,全视场各谱段MTF在Nyquist频率下优于0.75。加工、装调后的系统静态传函测试结果高于0.2的系统技术指标要求。
According to the technical requirements of multi-spectral camera, the optical design of TMA system is discussed. To meet the low distortion request of surveying and mapping, considering factos, such as processing, assembly and adjustment, spherical surface shape is designed for the second mirror to improve the reliability. The image quality is good. The relative distortion is less than 0. 012%, and full field MTF of each spectral at the Nyquist frequency is better than 0. 75. Thetest result of static MTF is above 0. 2, achieving the requirements.
出处
《光学与光电技术》
2013年第3期78-81,共4页
Optics & Optoelectronic Technology
关键词
光学设计
多光谱相机
离轴三反系统
传递函数
optical design
multispectral camera
off-axis three-mirror system
MTF
