Patents Represented by Law Firm Plevy & Associate
  • Patent number: 5541767
    Abstract: A method and apparatus for allowing a user who wears spectacles including at least one lens having a positive magnification factor, to view a distant object through both the lens of the spectacles and a telescope. The method comprises the step of positioning a lens in the optical path of the telescope. The lens placed in the optical path of the telescope is adapted to cancel the positive magnification factor of the lens of the spectacles to maintain the afocal characteristic of telescope. The apparatus comprises at least one afocal telescope defining an optical path having a first lens oriented in the optical path for magnifying a distant object to be viewed through the afocal telescope system. The telescope further comprises a second lens oriented in the optical path for cancelling the positive magnification factor of the lens to maintain the afocal characteristic of the telescope.
    Type: Grant
    Filed: October 27, 1994
    Date of Patent: July 30, 1996
    Assignee: Designs for Vision, Inc.
    Inventors: Peter J. Murphy, Richard E. Feinbloom