一种塑料非球面门镜光学系统的设计

Optical system design for plastic aspherical doorscope

介绍了一种塑料非球面门镜的设计原理及方法。把门镜视为逆向伽俐略系统来确定外形尺寸参数 ;仔细选取系统的光阑位置 ,选取二次曲面的系数及二次曲面的位置 ,可以校正系统的参差及像散。设计的门镜比现有的多种专利门镜结构简单、成像清晰。其视场中心像质达到了人眼明视距离处的极限分辨率。

This paper presents the design principle and method of an optical system for plastic aspherical doorscope The dimension parameters are determined by viewing the lens as an inverse Galileo system The coma aberation and astigmation are rectified through carefully selecting the position of aperture stop and the parameters of the quadratic surface Compared with the methods in the available patents, design result shows that structure is simpler and imaging is clearer The image quality can reach the limit of resolution at the least distance of distinct vision of 250 mm