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Speckle suppressed laser projection system with partial beam reflection

  • US 6,625,381 B2
  • Filed: 02/20/2001
  • Issued: 09/23/2003
  • Est. Priority Date: 02/20/2001
  • Status: Expired due to Term
First Claim
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1. A speckle suppressed laser projection system comprising:

  • a constant current supply;

    a semiconductor laser;

    an optical fiber positioned in front of an output of said laser, wherein said fiber induces optical feedback in said laser which causes said laser to produce a multimode output beam; and

    an optical projection system, wherein said optical projection system projects said multimode beam on a screen.

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