OPTICAL-PATTERN GENERATING BODY AND DEVICE AND METHOD FOR FORMING GENERATING BODY THEREOF

摘要

PURPOSE: To easily prepare an optical pattern generator. CONSTITUTION: An optical pattern generator 10 has a transparent board 12 and a reflection layer 14 coupled to this board. The reflection layer 14 absorbs infrared radiation and any desired pattern is removed so as to allow the transmission of beams through the shape of the pattern. A method for preparing the optical pattern generator is provided with processes for forming the layer of reflection material on the transparent base and removing one part of the layer with a laser so as to create the desired pattern.