Optics: measuring and testing – By shade or color
Patent
1995-09-13
1997-09-16
Hantis, K.
Optics: measuring and testing
By shade or color
356408, 250226, G01J 346
Patent
active
056686323
ABSTRACT:
A new method of measuring the soiling of floor surfaces or the like, capable of numerically and objectively measuring and grasping the soiling of floor surfaces and wall surfaces, in particular, the soiling of fiber floors, such as carpet floors, comprising the following steps: a step of illuminating a measurement surface of a floor surface in all directions by using diffused light from a diffusion chamber and a diffusion plate, a step of receiving light reflected by the measurement surface at the opening end of an optical fiber bundle disposed in the direction perpendicular to the measurement surface, a step of obtaining a color difference value between the surface color of the measurement surface obtained by measuring the received light and the surface-color of a standard plate obtained by making measurement in the similar way, and a step of numerically measuring the soiling of the floor surface depending on the change with time in the color difference value.
REFERENCES:
patent: 4298282 (1981-11-01), Williams
patent: 4464054 (1984-08-01), Karras et al.
"Fundamentals of Carpet Maintenance-An Introduction to Carpet Cleaning Technology," by Eric M. Brown, 1st Edition 1982, Published by P.A. Brown & Associates, W. Yorkshire, U.K., pp. 6-33.
Kobayashi Shozaburo
Shimomura Yasunobu
Hantis K.
Kabushiki Kaisha Shimomura Komuten
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