With development of vehicle-borne opto-electronic system,the sight with multi-functions has become a trend.This paper presents common path design for TV sight/visual sight.For visual direct-view sight, magnification, field of view, exit pupil diameter and eye relief are 8×, 5°, φ4 mm and not less than 15 mm respectively, while F number and focal length are 6 and 110 mm respectively for TV sight.Then tolerence of the results is analyzed.Finally, strict tolerance of parts fabrication and system assembly are formulated according to the analysis of tolerance.For 2.3 m×2.3 m target, identification distance is more than 4 km, which can meet imaging demands.%随着车载光电系统的发展,多功能合一的观察瞄准镜成为发展趋势.将电视观瞄/可见光直视观瞄系统进行共光路设计,可见光直视观瞄系统放大倍率为8×、视场为5°、出瞳直径为φ4 mm、出瞳距离不小于15 mm;电视观瞄系统F数为6、焦距为110 mm.同时,对设计结果进行公差分析,根据公差分析结果制定严格的零部件加工公差及系统装调方案,系统结构紧凑,成像良好,对2.3 m×2.3 m的目标进行观瞄,识别距离大于4 km,满足指标要求.
展开▼
