Spectrometer

Details Spectrometer Spectrometer

1984-06-22

1986-09-02

Evans, F. L.

Optics: measuring and testing

By dispersed light spectroscopy

Utilizing a spectrometer

356317, G01J 302

Patent

active

046092897

ABSTRACT:
A spectrometer which comprises a light source for exciting a sample, and a monochromator whose intensity values, as detected at the output gap, are subjected to further processing in a computer, in conjunction with the associated wavelength values, for the purposes of achieving a large measuring range and a high degree of measuring accuracy is provided with two secondary electron multipliers and a beam splitter which supplies the second secondary electron multiplier with only a small fraction of the radiation issuing from the monochromator. An electronic switch transmits to the computer, by way of an A-D converter, the output of that secondary electron multiplier whose output signal is within the analysable range of levels. The computer causes the monochromator to pass through the measuring range a plurality of times, and individually stores the measurement values which are then processed to form mean values.

REFERENCES:
patent: 3554647 (1971-01-01), Paine
patent: 4070112 (1978-01-01), Tsunazawa et al.
patent: 4260255 (1981-04-01), Wachs et al.
patent: 4373813 (1983-02-01), Reid et al.

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