Double-Reverse Total-Internal-Reflection-Prism Optical Engine

摘要

A device for a light projection system comprises at least one light source; light collection and relay optics; a reflective surface; a micro-display; an illumination total internal reflection TIR-prism disposed between the reflective surface and the micro-display; an imaging TIR-prism disposed between the illumination TIR-prism and the micro-display; and a projection lens. The light collection and relay optics is arranged to channel light emitted by the at least one light source to the illumination TIR-prism. The TIR-prism is arranged to totally internally reflect the light to the reflective surface. The reflective surface is arranged to reflect the light back through the illumination TIR-prism and through the imaging TIR-prism to the micro-display. The micro-display is arranged to reflect the light back through the imaging TIR-prism. The imaging TIR-prism is arranged to totally internally reflect the light from the micro-display to the projection lens.