REAR PROJECTOR, CABINET FOR REAR PROJECTOR, AND PROJECTOR

摘要

PROBLEM TO BE SOLVED: To provide a thin rear projector, having a projector that can be used for both front projection and rear projection, and to provide a cabinet and projector for the rear projector.;SOLUTION: The rear projector 1 includes the cabinet 11; a screen 21; the projector 31 that has a wide-angle projection lens 55 detachable from the front face of the cabinet 11; and the mirror 41. Mathematical Formula (1) is satisfied by defining distance g₁ (mm), between the exit pupil of the projection lens 55 and the mirror 41; distance g₂ (mm) between the mirror 41 and the screen 21; the diagonal angle dimension a (inch) of the screen 21, and the width/length ratio of the screen 21 (e/f), and the diagonal field angle (half angle) θ of the projection lens 55.;COPYRIGHT: (C)2008,JPO&INPIT