TELEVISION PICTURE PROJECTOR

摘要

PURPOSE:To improve the luminance by reutilizing a light not incident to a lens by the operation returning the light of a minute trihedral orthogonally arranged mirror to an irradiated point and the operation of diffusing reflection of a fluorescent face of an image tube. CONSTITUTION:A lens 2 is arranged before the image tube 1 and a mirror 10 where minute trihedral orthogonally arranged mirrors are arranged without clearance in the vicinity of an end of the lens 2 toward the video image tube 1. Then light 24 incident to the mirror 10 is returned to an original point 22 of a fluorescent face 21 or its vicinity. The light returned is reflected with diffusion a part of the light is made incident to the lens 2 so as to contribute to the image forming on a screen 3. Thus, the luminous amount incident to the lens 2 is increased by the mirror 10.