Optics: measuring and testing – For light transmission or absorption
Reexamination Certificate
2006-06-06
2006-06-06
Toatley, Jr., Gregory J. (Department: 2877)
Optics: measuring and testing
For light transmission or absorption
Reexamination Certificate
active
07057730
ABSTRACT:
An apparatus for measuring an absorption coefficient includes a first diffusive material, a second diffusive material inside the first diffusive material separated from the first diffusive material by a cavity, and a transparent material proximate to an inner surface of the second diffusive material that holds an absorptive material. First and second light detectors measure light intensities in the first and second diffusive materials respectively. An absorption coefficient for the absorptive material may be determined based on the first and second light intensities measured when the cavity is illuminated by a light source.
REFERENCES:
patent: 5424840 (1995-06-01), Moore et al.
patent: 5712710 (1998-01-01), Karakus et al.
patent: 6580091 (2003-06-01), Eriguchi et al.
patent: 6664071 (2003-12-01), Windhab et al.
patent: 197 51 403 (1999-05-01), None
PCT International Search Report dated May 13, 2004 for PCT/US03/36668, dated Nov. 17, 2003.
Friedman, et al., “Absorption Coefficient Instrument for Turbid Natural Waters,”Applied Optics, vol. 19, No. 10, pp. 1688-1693, May 15, 1980.
Leathers, et al., “Analysis of a Point-Source Integrating-Cavity Absorption Meter,”Applied Optics, vol. 39, No. 33, pp. 6118-6127, Nov. 20, 2000.
Fry Edward S.
Gray Deric J.
Kattawar George W.
Lu Zheng
Zhao Xianzhen
Allawi Ali
Baker & Botts L.L.P.
The Texas A&M University System
Toatley , Jr. Gregory J.
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