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Speckle averaging system for laser raster-scan image projection

United States Patent

5,729,374
March 17, 1998
View the Complete Patent at the US Patent & Trademark Office
Lawrence Livermore National Laboratory - Visit the Industrial Partnerships Office Website
The viewers' perception of laser speckle in a laser-scanned image projection system is modified or eliminated by the addition of an optical deflection system that effectively presents a new speckle realization at each point on the viewing screen to each viewer for every scan across the field. The speckle averaging is accomplished without introduction of spurious imaging artifacts.
Tiszauer; Detlev H. (Tracy, CA), Hackel; Lloyd A. (Livermore, CA)
The Regents of the University of California (Oakland, CA)
08/ 497,965
July 3, 1995
The United States Government has rights in this invention pursuant to Contract No. W-7405-ENG-48 between the United States Department of Energy and the University of California for the operation of Lawrence Livermore National Laboratory.