公开(公告)号：US3802785A

公开(公告)日：1974-04-09

申请号：US28971972

申请日：1972-09-15

Applicant: INT COMPUTERS LTD

Inventor： HANKINS H ,  ROBERTS I

IPC: G01J1/04 ,  G01J1/44 ,  G01J1/40

CPC classification number: G01J1/04 ,  G01J1/0411 ,  G01J1/0437

Abstract: An optical system with a first lens system which produces at a first image plane a real image of an object and a second lens system for producing a real image of the exit pupil of the first lens system at a second image plane. A stop arrangement is provided for controlling the region of the image of the object surface from which light can travel to the second plane. Conveniently the luminance of the object is detected at the second image plane by suitable luminance detection means.

Abstract translation: 一种具有第一透镜系统的光学系统，其在第一图像平面处产生物体的真实图像，以及用于在第二图像平面处产生第一透镜系统的出射光瞳的实际图像的第二透镜系统。 提供了一种停止装置，用于控制光可以从中移动到第二平面的物体表面的图像区域。 方便地，通过合适的亮度检测装置在第二图像平面处检测物体的亮度。