Patent Number: 6,165,392

Title: Method and apparatus for manufacturing lenses and a lens manufactured thereby

Abstract: A method of manufacturing a lens having a lens body integral with a functional sheet on one side thereof, includes an insert molding process including the steps of: placing the functional sheet as an insert in position in a mold defining a suction hole therein; and while attracting the functional sheet against a molding surface of the mold by a peripheral portion thereof by suction through the suction hole, supplying to the mold a molten plastic material for forming the lens body, to form the lens.

Inventors: Kobuchi; Nobuyuki (Osaka, JP), Okamoto; Masahiko (Osaka, JP)

Assignee: Yamamoto Kogaku Kabushiki Kaisha

International Classification: B29C 33/14 (20060101); B29D 11/00 (20060101); B29C 33/18 (20060101); B29C 45/14 (20060101); B29D 011/00 ()

Expiration Date: 12/26/2013