Optics: measuring and testing – For light transmission or absorption
Patent
1996-11-12
1998-02-10
Font, Frank G.
Optics: measuring and testing
For light transmission or absorption
356 73, 356410, 356417, 356246, G01N 2100
Patent
active
057174946
ABSTRACT:
In a method of measuring optical characteristics of a component in a liquid impregnated in a porous material with no affection by the porous material, a light beam having an absorbable wavelength which is absorbed by the component in the liquid and a light beam having a wavelength which is longer than the absorbable wavelength are projected to the porous material, and a quantity of light having the wavelength which is absorbed by the component in the liquid is compensated by a quantity of transmitted light having the wavelength longer than the absorbable wavelength.
REFERENCES:
patent: 3526480 (1970-09-01), Findl et al.
patent: 4475813 (1984-10-01), Munk
patent: 5477324 (1995-12-01), Bertholot et al.
patent: 5600444 (1997-02-01), Tong
Fujioka Shigeru
Hosotani Atsushi
Morishita Makoto
Motokawa Hisashi
Taguchi Takayuki
Font Frank G.
Nihon Medi+Physics Co., Ltd.
Ratliff Reginald A.
Teramecs Co., Ltd.
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