Selective switching TV projection and camera system - uses fixed projectors with one rotating TV camera associated with ground glass screen

摘要

The system is for selective switching of different film projectors onto one TV camera (KA). The camera is fitted to a rotating mechanism (SV) with the projectors (P1, P2, P3) correctly positioned relative to the rotation axis (SA). A ground glass screen (MS) is mounted on the rotating mechanism to lie between the projector (P2) and the camera. The focal length and depths of the camera and projector objectives as well as the position of the ground glass screen are chosen so that the screen lies in the projection plane and in the light sensitive layer of the camera. A photo sensitive element (PE) is mounted and connected to give automatic control of the amount of light received by the camera.