光子学报, 2015, 44 (1): 0122001, 网络出版: 2015-01-26
用于深空探测的宽谱段大视场小型光学系统设计
Light Optical System Design with Wide Spectral Band, Large Field of View for Deep Space Exploration
摘要
设计了一种宽谱段、大视场、轻小型成像光学系统.系统焦距为35 mm, 相对孔径为1∶7.5, 工作谱段为0.4-0.9 μm, 全视场为2ω=60°, 采用复杂化双高斯结构, 透镜面形均采用球面设计, 实现系统总长115 mm, 在70 lp/mm处, 最低光学传递函数大于0.45.利用负畸变法、像差渐晕法改善广角系统像面照度均匀性, 使像面边缘视场照度达到中心视场的80%.像面照度不均匀性为8%, 系统热光学性能良好, 在0-40℃范围内均有较好的像质, 满足深空探测需求.
Abstract
A light optical system with wide bands, large field of view and lightweight was designed. The focal length is 35 mm, F-number is 7.5, working wavelength range is 400-900 nm, and a view angle is 60°. A complex double-Gauss construction was applied in the designed system, and spherical surfaces were used in all lens, so that the total length could be 115 mm and minimum modulation transfer function could be greater than 0.45 at 70 lp/mm. Barrel distortion and aberration vignetting were used to improve illuminance distribution homogeneity, marking the margin field illuminance reach 80% and the image plane illumination uniformity be 8%. This optical system has a good thermo-optical properties, can achieve fine image quality at the working temperature range of 0-40 Celsius, which is suitable for the deep space exploration.
孟庆宇, 董吉洪, 曲洪丰, 王维, 曹智睿. 用于深空探测的宽谱段大视场小型光学系统设计[J]. 光子学报, 2015, 44(1): 0122001. MENG Qing-yu, DONG Ji-hong, QU Hong-feng, WANG Wei, CAO Zhi-rui. Light Optical System Design with Wide Spectral Band, Large Field of View for Deep Space Exploration[J]. ACTA PHOTONICA SINICA, 2015, 44(1): 0122001.