条带式画幅摄影机的检测仪是用来检验它的摄影物镜(以下简称主物镜)的调焦精度和视轴的水平精度的设备(以下简称检测仪)。本文根据主物镜调焦的允许精度等于它的焦深,提出对目视系统的检测仪的设计要求。为了达到这种要求,对检测仪的三种设计方案作了分析和比较,最后选用棱镜分象的测距仪方案,并从精度分析定下有关参数,作出了光学设计。 The detector of a tape format camera is a device (hereinafter referred to as a tester) for checking the focusing accuracy and the horizontal accuracy of a visual axis of a photographic objective of the photographic lens (hereinafter referred to as the main objective lens). In this paper, according to the main objective lens to allow the accuracy of focusing is equal to its depth of focus, put forward the visual system design requirements of the detector. In order to meet this requirement, the three design schemes of the detector are analyzed and compared. Finally, the program of the prism sub-resolution is selected, and the relevant parameters are determined from the accuracy analysis to make the optical design.