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Dual beam optical spectrograph

  • US 5,757,483 A
  • Filed: 08/06/1997
  • Issued: 05/26/1998
  • Est. Priority Date: 08/06/1997
  • Status: Expired due to Fees
First Claim
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1. A spectrograph, comprising:

  • a) a housing with outer walls defining an inner chamber divided into two subchambers by a partition;

    b) each subchamber having a light input;

    c) each subchamber containing at least one concave collimating mirror adapted to direct light from said light input onto a planar diffraction grating from which the light is reflected to a concave focusing mirror and then onto a single contiguous light detector means; and

    d) the light input in each subchamber is located between the planar grating and the light detector means.

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