Patents Assigned to Optics Technology Inc.
  • Patent number: RE40152
    Abstract: Plastic injection-compression multi-cavity molding of flash-free improved-cleanliness thermoplastic spectacle lenses (16) are suitable to be robotically dip hardcoated. Special spring-loaded (25, 26) molds having variable-volume mold cavities are used in an injection-compression molding process to form, without parting line flash, pairs of a wide range of differing optical power of polycarbonate Rx spectacle lenses (16). These pairs have special molded-on design features which are specially suited for full automation, starting with a novel way for ejection out of the mold into a takeout robot which is integrated via full automation with subsequent dip hardcoating. A molded-on tab with each pair of lenses is specially suited for manipulation by SCARA type robot.
    Type: Grant
    Filed: February 8, 2002
    Date of Patent: March 18, 2008
    Assignee: Optics Technology Inc.
    Inventors: Steven M. Maus, George J. Galic