静态紫外地球模拟器光学系统设计

Design of Optical System for a Static Ultraviolet Earth Simulator

静态紫外地球模拟器是一种对紫外导航敏感器进行地面标定和精度测试的设备。本文设计了一种静态紫外地球模拟器光学系统,提出大视场静态紫外地球模拟器光学系统设计方案,对光学系统的参数进行了分析,系统选用七片透镜进行设计,有效孔径为D=10 mm,焦距为f=100 mm,视场角为Φ40°。全视场相对畸变小于0.036%,MTF在50 lp/mm处大于0.7,波像差均方根值小于0.037λ,地球张角偏差??<0.006 7°,达到了高精度的指标要求,满足设计要求。

Static ultraviolet earth simulator is a ground calibration and accuracy testing device for ultraviolet Navigation sensor. Ultraviolet earth simulator is a new type of earth simulator with small volume, high precision. This paper introduces an optical system for a static ultraviolet earth simulator and analyzes its parameters. An optical system of static ultraviolet earth simulator with wide field of view is presented. It is composed of seven lenses. Its aperture, focal length, and field of view are respectively 10 mm, 100 mm, andΦ40°. Its distortion is less than 0.036%, its MTF value at Nyquist frequency of 50 lp/mm is higher than 0.7, RMS of its wavefront error is less than 0.037λ, and the earth angular error is less than 0.006 7°. The high precision index requirement is achieved and the imaging analysis results show that the design is a feasible scheme.