Patent ID: 6717753
Filing Date: 2004-04-06
Classification: G02B

Abstract:
A method for manufacturing an optical element which is mounted on a supporting substrate having a groove for use in mounting the optical element thereon, comprising the steps of:forming at least one light beam conversion portion on one surface of an optical substrate; providing the first groove portion by removing a predetermined region on one side of the periphery of said light beam conversion portion up to a predetermined depth from the surface of the predetermined region, thereby forming an edge portion along a part of the periphery of said light beam conversion portion, an end face made up of said edge portion and a part of said light beam conversion portion surrounded by said edge portion, and the first side wall which has the periphery of said end face as the one end thereof and is made up of a part of the side wall of said first groove portion, and is formed such that it comes into contact with the mounting groove of the supporting substrate; providing the second groove portion by removing a predetermined region on other side of the optical substrate up to a predetermined depth from the surface of the predetermined region, thereby forming an end face made up of a part of the surface of said optical substrate, and the second side wall portion which has the periphery of said end face as the one end thereof and is made up of a part of the side wall of the second groove portion, and is formed such that it comes into contact with the mounting groove of the supporting substrate; and cutting said optical substrate along a predetermined cutting line, thereby obtaining an optical element which is provided with at least one of said light beam conversion portion and said first side wall corresponding thereto, at least one of said second side wall, a side face formed of a part of the bottom face of said first groove portion, a side face formed of a part of the bottom face of said second groove portion, and a side face formed of a part of the surface of said optical substrate.