Patent ID: 6970280
Filing Date: 2005-11-29
Classification: G02B

Abstract:
1. A projection system comprising: a light source; a spatial light modulator comprising an array of micro-mirrors; condensing optics, wherein light from the light source is focused as a cone of light with an axis onto the array of micro-mirrors; projection optics for projecting light selectively reflected from the array of micro-mirrors; a controller for selectively actuating micro-mirrors in the array of micro-mirrors; wherein the array of micro-mirrors comprises a substrate and a plurality of mirror plates disposed in a first state in a plane parallel to the substrate, each mirror plate held on the substrate by a hinge structure that comprises a hinge that is spaced apart from the mirror plate so as to define a gap between the hinge and the mirror plate, wherein the hinge structure and mirror plate are constructed so as to be capable of being actuated from the first state to a second state that is at least 14° (fourteen degrees) from the first state, and wherein the first axis of the cone of light incident on the micro-mirrors is at an angle relative to a line perpendicular to the plane parallel to the substrate of at least 28 (twenty eight) degrees.