Optics: measuring and testing – For light transmission or absorption – Of fluent material
Patent
1994-06-13
1998-08-25
Rosenberger, Richard A.
Optics: measuring and testing
For light transmission or absorption
Of fluent material
356435, 356438, G01N 2100
Patent
active
057988404
ABSTRACT:
A design for a fast absorption optical tomography instrument is disclosed. The subject invention is capable of generating 100 projections of 100 elements each in less than 200 ns. It comprises and optical pulse generator, a tomography ring with temporally multiplexed fiber-optic fan-beam sources and fast detectors, and data acquisition electronics. A single short pulse (<10 ns) of radiation tuned to an absorption transition of the chemical species of interest produces a cross sectional image of concentration. Supplying two such pulses to the instrument can yield simultaneous quantitative images of temperature and absolute concentration in fields with temperature inhomogeneities. Additional pulses lead to concentration images of additional species.
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Burke William J.
Reid Derrick M.
Rosenberger Richard A.
The Aerospace Corporation
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