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Fourier transform infrared spectrometer

  • US 5,416,325 A
  • Filed: 04/29/1993
  • Issued: 05/16/1995
  • Est. Priority Date: 04/29/1993
  • Status: Expired due to Fees
First Claim
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1. A fourier transform infrared spectrometer, comprising:

  • means for providing an infrared beam;

    means for detecting an infrared beam; and

    a dielectric concentrator coupled to said means for detecting by means consisting of a good optical coupling, said concentrator being a non-imaging concentrator comprising a convergent concentrator having an output aperture with an output aperture diameter and further having reflecting surface providing a light output angle θ

    1 between 45° and

    90°

    as seen by said means for detecting and said concentrator and said means for detecting having a spacing therebetween of less than 0.1 times the output aperture diameter of said concentrator, thereby minimizing the amount of the light which leaves the output aperture and misses the detector.

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