Projection apparatus

Abstract

A projection apparatus including an illumination system, a reflective light valve, at least one field lens and, an imaging system is provided. The illumination system is for providing an illumination beam and the reflective light valve is on a transmission path of the illumination beam to convert the illumination beam into an image beam. The field lens is disposed to face a reflective surface of the reflective light valve and on transmission paths of the illumination beam and the image beam. The imaging system includes a projection lens and a first reflective element, in which the first reflective element is on a transmission path of the image beam, and outside the transmission path of the illumination beam, so as to reflect the image beam to the projection lens. An optic axis of the projection lens is perpendicular to a normal vector of the reflective surface of the reflective light valve.

Dependencies are inferred from the claim text.