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Spectrometer for the simultaneous measurement of intensity in various spectral regions

  • US 4,993,834 A
  • Filed: 09/25/1989
  • Issued: 02/19/1991
  • Est. Priority Date: 10/03/1988
  • Status: Expired due to Fees
First Claim
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1. In a polychromator having an entrance slit and a concave diffraction grating in a Paschen-Rung mounting on a Rowland circle, the improvement comprising:

  • a row of photodiodes; and

    means, including image conductors coupling at least two areas on the Rowland circle and the row of photodiodes, for transmitting respective spectral regions of the at least two areas to the row of photodiodes so that the spectral intensity distribution of the at least two spectral regions is measured by the row of photodiodes, wherein each image conductor coupling an area of the Rowland circle and a photodiode is a cross section converter having on its one end a cross section equal to an acceptance cross section of the photodiode and on an opposite end a height equal to the spectral region at the area on the Rowland circle.

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