Patent ID: 6264333
Filing Date: 2001-07-24
Classification: G03B

Abstract:
A reflection type projector, comprising:a light source for emitting illumination light;a micro mirror device having many micromirrors that are two-dimensionally arranged, each of said many micromirrors being independently switched between an ON position and an OFF position to modulate said illumination light;a separation prism disposed between said light source and said micro mirror device, said separation prism being provided with first, second and third surfaces, wherein said illumination light is incident on said first surface and reflected by said micro mirror device that faces to one part of said second surface, said separation prism being disposed so that the reflected light from said micromirrors at the ON position is totally reflected by said first and third surfaces to exit from said separation prism through the other part of said second surface and the reflected light from said micromirrors at the OFF position is not totally reflected by said third surface; anda projection lens for projecting the light that is totally reflected by said first and third surfaces and passes through said second surface onto a screen.