Optics: measuring and testing – By dispersed light spectroscopy – Utilizing a spectrometer
Patent
1990-06-14
1994-02-08
Evans, F. L.
Optics: measuring and testing
By dispersed light spectroscopy
Utilizing a spectrometer
356302, 356334, 356305, G01J 328, G01N 2100
Patent
active
052852555
ABSTRACT:
An optical device for the spectral analysis of a light source which comprises a spectrograph assembly including a dispersive element, and a classical collimator. The spectrograph assembly supplies a complete intermediate spectrum at the object focus of the classical collimator and the classical collimator reforms, at its image focus, an image of the dispersive element. The spectrograph assembly is preferably a Czerny-Turner or other type of spectrograph comprising an entry slit, two juxtaposed concave mirrors of the same focal length and a dispersive element placed strictly in the common focal plane of the two mirrors. Most preferably, the classical collimator is the first mirror of the second, similar spectrograph assembly. The device is most advantageous in that it is readily useable for both simultaneous and sequential spectroscopy.
REFERENCES:
patent: Re26053 (1966-07-01), Cary
patent: 3888590 (1975-06-01), White
patent: 4326802 (1982-04-01), Smith, Jr. et al.
patent: 4455087 (1984-06-01), Allemand et al.
Applied Optics, vol. 9, No. 10, Oct. 1970, pp. 2332-2336, "High Dispersion Stellar Spectroscope with an Echelle Grating".
Patent Abstracts of Japan, vol. 6, No. 198 (P-147) [1076], Oct. 7, 1982.
Baranne Andre
Pilloud Francis
Evans F. L.
Fisons plc
Hantis K. P.
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