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Apparatus and method for projecting laser pattern with reduced speckle noise

  • US 5,621,529 A
  • Filed: 04/05/1995
  • Issued: 04/15/1997
  • Est. Priority Date: 04/05/1995
  • Status: Expired due to Term
First Claim
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1. An illuminating apparatus for use with a visual sensory apparatus, for projecting a light pattern onto a surface to be viewed by said sensory apparatus, said surface having a characteristic roughness, said illuminating apparatus comprising:

  • a. a light source;

    b. means for constraining light emitted from said source to produce on said surface, a light pattern having a light interface, said interface having an extended dimension; and

    c. means for causing said light pattern to move relative to said surface, parallel to said extended dimension of said light interface.

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