Optics: measuring and testing – By dispersed light spectroscopy – Utilizing a spectrophotometer
Patent
1998-10-14
2000-02-01
Hantis, K. P.
Optics: measuring and testing
By dispersed light spectroscopy
Utilizing a spectrophotometer
2504611, G01J 342
Patent
active
060209593
ABSTRACT:
An apparatus for measuring a spectral characteristic of a fluorescent sample, being provided with: a first illuminator for emitting a beam in a wavelength range including the ultraviolet spectrum; a second illuminator for emitting a beam in a wavelength range longer than a first cutoff wavelength; a spectral radiance factor measuring device for measuring first and second total spectral radiance factors of a fluorescent sample by illuminating the fluorescent sample by the first illumination device and second illumination device, respectively; a memory for storing weight coefficients for weighting first and second total spectral radiance factors; and a calculator for calculating a total spectral radiance factor of the fluorescent sample in accordance with the following equation using measured first and second total spectral radiance factors and a weight coefficient:
REFERENCES:
patent: 5384641 (1995-01-01), Imura
patent: 5636015 (1997-06-01), Imura et al.
Japanese Industrial Standard, JIS 78717; Methods of Measurements for Colour of Fluorescent Objects, 1989.
Hantis K. P.
Minolta Co. , Ltd.
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