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Integrated ultraviolet and infrared source with minimal visible radiation

  • US 5,563,420 A
  • Filed: 10/28/1994
  • Issued: 10/08/1996
  • Est. Priority Date: 10/28/1994
  • Status: Expired due to Term
First Claim
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1. A source comprising:

  • first means for providing a first beam comprising infrared and visible energy;

    second means for providing a second beam of ultraviolet energy; and

    third means for eliminating visible energy from said first beam and for directing said first and second beams to a common output aperture to provide an output beam, wherein said third means includes a first mirror for transmitting infrared and visible energy, a second mirror for directing ultraviolet energy to said first mirror, and a third mirror for collimating said output beam;

    means for detecting the presence of an object;

    means for enabling said second means on the detection of said object, wherein said means for enabling said second means on the detection of said object is a shutter which selectively blocks ultraviolet energy; and

    means for chopping the output beam.

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