Patent ID: 6872334
Filing Date: 2005-03-29
Classification: B29C,B29D,Y10S

Abstract:
1. A method of manufacturing a compound aspheric lens, comprising the steps of: supplying nitrogen gas into a syringe for storing ultraviolet-curable resin fluid, and dropping the ultraviolet-curable resin fluid purged with the nitrogen gas onto an aspheric face of a metallic mold set horizontally, said aspheric face having a desired concave face; bringing a convex lens to constitute the base of the aspheric lens close to the metallic mold and stopping the movement of the lens just before it comes into contact with the ultraviolet-curable resin fluid; inclining the metallic mold and the lens together to cause the ultraviolet-curable resin fluid to flux; after bringing the lens into contact with this fluxed and swelled ultraviolet-curable resin fluid in a narrow range, moving the lens to a prescribed position relative to the metallic mold to place the ultraviolet-curable resin fluid between the lens and the metallic mold; returning the lens and the metallic mold together, with the ultraviolet-curable resin fluid held between them, from the inclined state to the horizontal state; irradiating the ultraviolet-curable resin fluid with ultraviolet rays to cure the resin fluid; and separating the molded resin layer that has been cured from its interface with the metallic mold.