Patents Assigned to MMB Optical
  • Optical measurement method and apparatus
    Patent number: 5461434
    Abstract: A method and apparatus is described for interpupillary distance measurement. The device includes a frame and a pair of sliders. In use, the sliders are mounted in the frame and adjusted horizontally apart by the user and fixed in that position for later measurement. A bifocal or multifocal optical centering device and method is also described. The optical centering device includes a frame which is attached to a spectacle lens and a slider adjusted therein relative to the user's eye. The slider is then fixed for later measurement.
    Type: Grant
    Filed: June 15, 1994
    Date of Patent: October 24, 1995
    Assignee: MMB Optical
    Inventor: Martin M. Blattberg