Optics: measuring and testing – For light transmission or absorption – Of fluent material
Reexamination Certificate
2007-05-08
2007-05-08
Rosenberger, Richard A. (Department: 2877)
Optics: measuring and testing
For light transmission or absorption
Of fluent material
C356S246000
Reexamination Certificate
active
11101913
ABSTRACT:
An absorption spectroscopy apparatus including a sample cell having a central axis, and a side wall coaxially positioned about the axis. The side wall defines a generally circular cross-section of the cell as taken along a plane extending perpendicular to the axis, wherein the generally circular cross-section of the sample cell has an average radius. The side wall includes a plurality of light reflective segments arrayed about the axis, wherein each reflective segment has a cross-section taken along a plane extending perpendicular to the axis of the cell that is concave with respect to the axis. The concave cross-section of each segment has an average radius that is unequal to the average radius of the generally circular cross-section of the sample cell. Among other aspects and advantages, the apparatus of the present disclosure is able to use incoherent, non-collimated light sources while maintaining high optical throughput efficiencies.
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Daly James T.
Johnson Edward A.
Loges Peter G.
McNeal Mark P.
Puscasu Irina
Foley & Lardner LLP
Ion Optics, Inc.
Lappin Mark G.
Rosenberger Richard A.
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