Patent ID: 6502961
Filing Date: 2003-01-07
Classification: F21V,F21W,G02B

Abstract:
A light beam projection device comprising:a light source that generates light that travels along an optic path, a directing optical element that redirects light from said light source along said optic path, said directing optical element that redirects light directs said light at an angle such that said light is not parallel to said 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, and a light modifying means comprising at least one light modifying element, each said light modifying element comprises an array of light modifying element segments, said light modifying means is located in said optic path past said primary optic means; wherein said light modifying means is deployed by moving said light modifying means from a non-deployed position in which said light modifying elements do not impinge said light regions to a deployed position in which said light modifying elements impinge said light regions, and an effect of said light modifying elements is controlled in degree by controlling an amount of impingement of said light modifying elements on said light regions.