HIGH CONTRAST PROJECTION SYSTEM WITH A REFLECTIVE LOUVER STRUCTURE

摘要

In a particular, a high contrast projection system (100) configured for front or rear projection includes a screen (102) having a viewing side (104) and a back side (106) opposite thereto. The screen (102) includes a transparent layer (120) of material having louver members (122) disposed therein to provide fractional reflective coverage across the width (204) of the transparent material (120). The screen (102) discriminates an image signal light (110) from a source, (118) such as a projector, from ambient light (112) incident upon the viewing surface. The image signal light (110) is redirected over a range of angles relative to a normal (114) to the viewing side (104), while the majority of ambient light (112) is directed generally toward the back side (106), for example passing through the transparent material (120) between louver members (122). A light absorbing back panel (108) adjacent to the back side (106) absorbs the ambient light (112) further improving contrast.