ApplicationNo. 470715 filed on 05/17/1974
US Classes:351/47, Removable and/or adjustable filters or screens (e.g., clip-on type)351/49, Polarizing351/57, With auxiliary lenses movable in and out of the optical path (e.g., clip-on type attachments)351/84With rotating means for multifocal lenses
ExaminersPrimary: Rolinec, R. V.
Assistant: Dahl, Lawrence J.
Attorney, Agent or Firm
International ClassG02C 9/00 (20060101)
AbstractAn eyeglass structure for both corrective bifocal lenses and lenses for modifying light intensity wherein means are provided for changing the physical positions of the lenses on the frame to modify the optical characteristics thereof.