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Instrument and method for spectroscopic analysis by reflectance and transmittance

  • US 6,137,108 A
  • Filed: 06/17/1998
  • Issued: 10/24/2000
  • Est. Priority Date: 06/17/1998
  • Status: Expired due to Fees
First Claim
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1. A probe for an spectrometer for measuring a sample comprising:

  • a body defining a slot for receiving the sample;

    a specularly reflecting surface on one side of said slot;

    means for directing light into the sample received in the slot toward said reflecting surface;

    a first optical fiber arrangement positioned to collect light reflected from said reflecting surface back through said slot and primarily transmitted through said sample without scattering and transmitting the collected light to a light detector;

    a second optical fiber arrangement positioned to collect primarily light diffusely reflected from the sample in the slot and transmitting the collected light to a light detector;

    said second fiber optic arrangement having a distal end at said slot shaped in an annulus around said first optical fiber arrangement.

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