OPTICAL COUPLING DEVICE AND IMAGE PROJECTION APPARATUS USING THE SAME

摘要

PURPOSE: An optical coupling device and an image projection apparatus using the same are provided, which maintains equal brightness of an image realized on a number of screens by controlling a light output rate being output from an optical fiber. CONSTITUTION: A light transfer medium(210) has at least more than two input parts and at least more than two output parts and a connector connecting the input parts and the output parts. The first lens(220) is comprised in the input port of the light transfer medium and condenses an input light. The above connector forms at least more than one optical path, and is formed by heating a position distant from the input part.