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Title: Speckle averaging system for laser raster-scan image projection

Abstract

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.

Inventors:
 [1];  [2]
  1. Tracy, CA
  2. Livermore, CA
Issue Date:
Research Org.:
Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
OSTI Identifier:
871423
Patent Number(s):
5729374
Application Number:
08/497965
Assignee:
Regents of University of California (Oakland, CA)
Patent Classifications (CPCs):
G - PHYSICS G02 - OPTICS G02B - OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
DOE Contract Number:  
W-7405-ENG-48
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
speckle; averaging; laser; raster-scan; image; projection; viewers; perception; laser-scanned; modified; eliminated; addition; optical; deflection; effectively; realization; viewing; screen; viewer; scan; field; accomplished; introduction; spurious; imaging; artifacts; viewing screen; scanned image; image projection; /359/

Citation Formats

Tiszauer, Detlev H, and Hackel, Lloyd A. Speckle averaging system for laser raster-scan image projection. United States: N. p., 1998. Web.
Tiszauer, Detlev H, & Hackel, Lloyd A. Speckle averaging system for laser raster-scan image projection. United States.
Tiszauer, Detlev H, and Hackel, Lloyd A. Tue . "Speckle averaging system for laser raster-scan image projection". United States. https://www.osti.gov/servlets/purl/871423.
@article{osti_871423,
title = {Speckle averaging system for laser raster-scan image projection},
author = {Tiszauer, Detlev H and Hackel, Lloyd A},
abstractNote = {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.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1998},
month = {3}
}

Works referenced in this record:

Displacement Measurement from Double-exposure Laser Photographs
journal, April 1972


Optical Surface Roughness Determination Using Speckle Correlation Technique
journal, January 1975


Formation and Localization of Holographically Produced Interference Fringes
journal, November 1969


Real-time measurement of surface roughness by correlation of speckle patterns
journal, January 1976