Patents Assigned to Neefe Optica Lab Inc.
  • Injection molding of optical lenses and optical molds
    Patent number: 4284591
    Abstract: A method of maintaining contact between the injected molded resinous optical surface and the mold by rapid filling of the mold through a restricted orifice and by mechanically moving the mold against the resin as it cools and shrinks.
    Type: Grant
    Filed: October 23, 1980
    Date of Patent: August 18, 1981
    Assignee: Neefe Optica Lab Inc.
    Inventor: Charles W. Neefe