Method and apparatus for calibrating a spectrometer

Details Method and apparatus for calibrating a spectrometer Method and apparatus for calibrating a spectrometer

1992-04-22

1994-06-21

Williams, Hezron E.

Measuring and testing

Instrument proving or calibrating

Volume of flow, speed of flow, volume rate of flow, or mass...

356328, G01J 300, G01J 324

Patent

active

053219708

ABSTRACT:
A calibration device for use in a spectrometer has a source of electromagnetic radiation, a detector for detecting electromagnetic radiation from the source, a device for recording the output of the detector, and at least one optical element in an optical path between the source and the detector to separate the electromagnetic radiation into spectral elements separately detected by the detector. The calibration device includes a variation mechanism to selectively modulate the intensity of each spectral element detected by the detector and a mechanism to adjust the variation mechanism so that the input of the detector substantially reproduces the input of electromagnetic radiation that the detector would receive in its normal operation from a sample which the spectrometer is intended to analyse.

REFERENCES:
patent: 3518002 (1970-06-01), Barringer et al.
patent: 3663106 (1972-05-01), Minami et al.
patent: 3700332 (1972-10-01), Decker, Jr.
patent: 3752585 (1973-08-01), Elliott
patent: 3975099 (1976-08-01), Taylor
patent: 4049353 (1977-09-01), Missio
patent: 4084906 (1978-04-01), Bibbero
patent: 4231663 (1980-11-01), Phillippi
patent: 4615619 (1986-10-01), Fateley

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