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Blocker device for eliminating specular reflectance from a diffuse reflection spectrum

  • US 4,661,706 A
  • Filed: 02/25/1985
  • Issued: 04/28/1987
  • Est. Priority Date: 02/25/1985
  • Status: Expired due to Term
First Claim
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1. An apparatus for obtaining a diffuse reflectance spectra comprising:

  • means for providing an incident energy beam;

    means for directing the incident energy beam to a sample;

    means for collecting energy that is diffusely reflected from the sample;

    blocking means positioned on or adjacent to the sample to substantially eliminate energy that is specularly reflected off the sample.

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