Patents Examined by S. Seyrafi
  • Patent number: 6075651
    Abstract: A compact, lightweight, multi-wavelength display system which can be used as a collimating eyepiece is provided. The system utilizes a polarization selective optical element, or PS element, that reflects one linear polarization state while transmitting radiation of the orthogonal linear polarization state. The PS element is used in combination with a quarter wave plate and an optical element, the optical element including a partially reflective surface. The optical element may either be a single element or an optical doublet. In the latter configuration, the partially reflective surface is at the interface between the two singlets that comprise the doublet. The system also includes an image source that either alone, or in combination with other optical elements, produces circularly polarized light of the desired rotary sense.
    Type: Grant
    Filed: January 28, 1999
    Date of Patent: June 13, 2000
    Assignee: Kaiser Electro-Optics, Inc.
    Inventor: Michael Hoppe