Browse Prior Art Database

HIGH-BRIGHTNESS FRONT SURFACE PROJECTION SCREEN

IP.com Disclosure Number: IPCOM000022795D
Original Publication Date: 1976-Feb-29
Included in the Prior Art Database: 2004-Mar-26

Publishing Venue

Xerox Disclosure Journal

Abstract

A diffuse-reflecting front surface projection screen, parti- cularly suitable for viewing projected micro-imaged trans- parencies in ambient room illumination, is produced by applying bright aluminum powder in small-flake form to a concave surface treated with an adhesive. The angle of dif- fusion is limited by orienting the flakes substantially parallel to the surface, and by restricting the curvature of the substrate to give an included viewing angle of about 40° or less. The concave substrate is preferably spherical in section. The average thickness of the aluminum layer is preferably about one monolayer. The flakes may be applied