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本文从光学信息传输观点出发,探讨星体测量相机光学设计中涉及到的有关目标、大气、仪器、接收器等光度特性和成象特性。并基于人眼对底片上目标象点的可探测性,进行星体测量相机拍摄能力估算。然后确定能够满足仪器所需要的拍摄的星等和星数的光学参数。进而再根据仪器的总精度要求提出光学系统象差校正的质量指标。为实现这一要求,分析了国外同类型仪器的各种光学系统。选择双高斯改进型物镜作为本相机的初始结构。采用自动光学设计方法,完成一个较高质量的光学系统设计。最后试用点列图和光学传递函数方法分别评价了光学设计的质量。加工装配后鉴定结果表明与理论分析计算结果基本相同。
In this paper, from the point of view of optical information transmission, this paper discusses the photometric characteristics and imaging characteristics of targets, atmosphere, instruments and receivers involved in the optical design of celestial body measurement cameras. Based on the detectability of the human eye to the target point on the film, the shooting capability of the camera for the astral measurement is estimated. Then determine the optical parameters that satisfy the required magnitude and number of stars for the instrument. Then according to the total accuracy requirements of the optical system aberration correction quality indicators. In order to meet this requirement, various optical systems of the same kind abroad are analyzed. Select Double Gaussian improved objective lens as the initial structure of the camera. The use of automatic optical design method to complete a higher quality optical system design. The final trial point diagram and optical transfer function method were evaluated optical design quality. After processing and assembly identification results show that the theoretical analysis and calculation results are basically the same.