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System and method for color measurements or other spectral measurements of a material

  • US 7,573,575 B2
  • Filed: 11/17/2006
  • Issued: 08/11/2009
  • Est. Priority Date: 12/29/2005
  • Status: Active Grant
First Claim
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1. A system, comprising:

  • an illuminating device operable to generate light for illuminating a sample of material during a plurality of first illumination states, wherein the sample is illuminated differently during different ones of the first illumination states;

    a detector operable to detect light that has interacted with the sample during the first illumination states and to provide measurements of the light that has interacted with the sample during the first illumination states;

    a controller operable to adjust a duty cycle of the illuminating device to control the illumination of the sample during the first illumination states; and

    an analyzer operable to determine a spectral characteristic of the sample based on the measurements, wherein the determined spectral characteristic is associated with a second illumination state that is different than the first illumination states.

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