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Optical path structure for open path emissions sensing with spinning mirror

  • US 20030057383A1
  • Filed: 12/28/2001
  • Published: 03/27/2003
  • Est. Priority Date: 08/21/2001
  • Status: Active Grant
First Claim
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1. An optical system for a gas component analysis, comprising:

  • a first emitter located on a first side of a vehicle path for emitting a first light beam having a first spectrum across the vehicle path;

    a first receiver for receiving the first light beam;

    a plurality of filter elements; and

    a spinning mirror face that reflects the beam so that the beam reaches each of the filter elements in sequence.

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