提供了一种基于机器视觉的双视野双光路远心系统设计方案,以折射棱镜为分界,将远心系统分为物镜部分与目镜部分,通过增加或更换目镜,即可在原有系统中同时实现不同的光学放大率,提高了远心系统在不同场合的适用性。设计了一款具有双视野的双远心系统。该系统工作距离为130 mm,物方视场分别为40 mm与80 mm,搭配 ON Semiconductor公司生产的型号为SN5000A的成像芯片,光学放大倍率分别为-0.275与-0.1375,并且满足低畸变(各视场畸变均小于0.1%)、高分辨(105 lp/mm处大于0.3)、高远心度(小于0.1°)等设计要求。

This paper reports a design scheme for a two-vision and two-light-path telecentric system based on machine vision. With a refractive prism as the boundary, the telecentric system is divided into two parts: the objective part and the eyepiece part. By adding and replacing the eyepiece, different optical magnifications are realized in the original system to ensure the applicability of telecentric systems in different situations. A double telecentric system with dual vision is designed. In the proposed system, the working distance is 130 mm, and the object fields of view are 40 mm and 80 mm, respectively. With an imaging chip SN5000A made by ON Semiconductor company, the optical magnifications are -0.275 and -0.1375, respectively. The system achieves low distortion (<0.1% in each field of view), high resolution (>0.3 at 105 lp/mm), and high telecentricity (<0.1°), and also meets other design requirements.