Patent ID: 6606199
Filing Date: 2003-08-12
Classification: G02B,H01S

Abstract:
A method of making a graded thickness optical element, the method comprising the steps of:providing a first layer having an aperture spaced above a substrate; providing one or more materials on the substrate through the aperture in the first layer to form a graded thickness optical element that extends laterally beyond the aperture in at least one region; and providing an intermediate layer between the first layer and the substrate wherein the intermediate layer has an aperture that extends laterally beyond the aperture in the first layer in at least one region; and wherein the steps of providing the first layer and the intermediate layer include the steps of: applying the intermediate layer adjacent the substrate; applying the first layer adjacent the intermediate layer; applying a third layer adjacent the first layer; creating an aperture in the third layer; creating an aperture in the first layer; and creating an aperture in the intermediate layer, wherein the aperture in the intermediate layer extends laterally beyond the aperture in the first layer in the at least one region.