Patent ID: 6048081
Filing Date: 2000-04-11
Classification: F21S,F21V,F21W,G02B

Abstract:
A device to project various sizes and shapes of a light beam comprising:a light source that generates generally parallel light along an optic path,a primary optical element comprising an array of optic segments to create an area in said optic path where said light from said light source is divided into a plurality of light regions, each said light region is reduced in area after passing through said optic segment, anda diffusion means comprising at least one diffusion element, each said diffusion element comprises an array of diffusion element segments, said diffusion means is located in said optic path past said primary optic means; whereinsaid diffusion means is deployed by moving said diffusion means from a non-deployed position in which said diffusion elements do not impinge said light regions to a deployed position in which said diffusion elements impinge said light regions, and an effect of said diffusion elements is controlled in degree by controlling an amount of impingement of said diffusion elements on said light regions.