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Color sensing for laser decoating

  • US 9,375,807 B2
  • Filed: 11/12/2013
  • Issued: 06/28/2016
  • Est. Priority Date: 01/09/2004
  • Status: Active Grant
First Claim
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1. A laser-based coating removal system to remove a coating from a surface, the system comprising:

  • a. a laser source to provide a laser pulse;

    b. scanning optics to direct the laser pulse along a laser path to a first position on the surface, whereby the laser pulse impinges the first position on the surface thereby ablating a portion of the coating from the first position;

    c. one or more light illuminators to provide a light illumination, each light illumination along a light illumination path, the light illumination impinging the first position on the surface;

    d. a photosensitive detector to receive light reflected from the surface as a result of the impinging light illumination and to measure the reflected light; and

    e. a color sensing path to direct the reflected light from the surface to the photosensitive detector, wherein the color sensing path includes the scanning optics, wherein all of the color sensing path is independent of all of the light illumination path.

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