Optics: measuring and testing – By dispersed light spectroscopy – Utilizing a spectrophotometer
Patent
1986-04-23
1988-09-13
McGraw, Vincent P.
Optics: measuring and testing
By dispersed light spectroscopy
Utilizing a spectrophotometer
356319, 356448, G01J 342
Patent
active
047705302
ABSTRACT:
A spectrophotometer (10) is provided having the capability to accurately measure spectral reflectance at relatively long sample distances. A first illumination optics arrangement (14) assures uniform illumination to a portion of the sample and a second optical arrangement (20) focuses the reflected image of part of the illuminated sample onto a polychromator (22). Reference beam means are provided so that the polychromator sequentially measures the spectral characteristics of the reference beam and the sample. Continuous monitoring of the illumination at select wavelengths provides illumination normalization data so that a microprocessor (40) can normalize the illumination and compare the reference beam and sample measurements to accurately determine the spectral reflectance characteristics of the sample. Angular and raster scanning capability is also provided.
REFERENCES:
patent: 3446972 (1969-05-01), Bentley et al.
patent: 3458261 (1969-07-01), Bentley et al.
patent: 3813172 (1974-05-01), Walker et al.
patent: 3818198 (1974-06-01), Walker et al.
patent: 3822098 (1974-07-01), Rudder et al.
patent: 3891317 (1975-06-01), Walker
patent: 4022534 (1977-05-01), Kishner
patent: 4076421 (1978-02-01), Kishner
patent: 4097152 (1978-06-01), Kishner
patent: 4449821 (1984-05-01), Lee
patent: 4529308 (1985-07-01), Rife
Hiraga et al., "Measurements of Spectral Characteristics of Optical Thin Film by Rapid Scanning Spectrophotometer", Japan J. Appl. Phys. Suppl. 2, PT1, 1974, pp. 689-692.
Van Aken Harold
Weber William L.
Kollmorgen Corporation
McGraw Vincent P.
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