Patents Examined by Michael O. Smith
  • Integrating projection optic
    Patent number: 5997155
    Abstract: A method and apparatus for projecting a uniform projection of light by using a diffusive optic and non-imaging optic to receive light beams and uniformly distribute the light beams on a target. The uniform distribution of light diverges according to a pre-designed angle. The device allows for the use of multiple light sources which may be remotely located from the projection device. The projection device may be portable.
    Type: Grant
    Filed: March 31, 1997
    Date of Patent: December 7, 1999
    Assignee: Physical Sciences, Inc.
    Inventors: Alfred D. Ducharme, Takashi Nakamura