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DOT-SCREEN SHADOWGRAPH ILLUMINATOR CONCEPT

IP.com Disclosure Number: IPCOM000023942D
Original Publication Date: 1979-Apr-30
Included in the Prior Art Database: 2004-Apr-01

Publishing Venue

Xerox Disclosure Journal

Abstract

An illumination concept to permit dot-screenshadowgraph receptor with the simplest possible mechanical configuration. exposure of a photo- As shown in Figure 1, the illuminator consists of an integrating cavity 2 having an array of apertures 3. The cavity is coated inside with a diffuse, highly reflective material and is illuminated with one or more lamps 4. Each aperture is an ueffective!-source whose size is determined from the shadow profile considerations.