Optics: measuring and testing – By dispersed light spectroscopy – With monochromator structure
Patent
1980-03-07
1982-03-09
Evans, F. L.
Optics: measuring and testing
By dispersed light spectroscopy
With monochromator structure
356334, 364498, G01J 318
Patent
active
043186165
ABSTRACT:
A microprocessor based spectrophotometer including manual keyboard command for sequencing a monochromatic energy beam through a spectral range of wave-lengths to a keyboard selected wavelength. A manual adjustment knob is thereafter rotatable for generating a 4-bit gray code signal which successively changes as the adjustment knob is rotated. The microcomputer senses a change in the gray code signal and indexes (steps) the wavelength of the monochromatic beam in proportion to the positional change of the adjustment knob as indicated by the changing gray code. A visual display indicating wavelength setting and spectral response, is updated conjointly with manual wavelength adjustment.
REFERENCES:
Morgenthaler et al., American Laboratory, vol. 8, No. 8, Aug. 1976, pp. 37-45.
Byte, vol. 4, No. 10, Oct. 1979, pp. 33-40.
Cordos et al., Analytical Chemistry, vol. 45, No. 2, Feb. 1973, pp. 425-433.
Aaronson et al., American Laboratory, vol. 7, No. 9. Sep. 1975, pp. 57-63.
Chamran Morteza M.
Scott Larkin B.
Williams Paul B.
Evans F. L.
Grimes E. T.
Hays R. A.
Masselle F. L.
The Perkin-Elmer Corporation
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