Optics: measuring and testing – By shade or color – With color transmitting filter
Reexamination Certificate
2004-02-10
2008-01-01
Evans, F. L. (Department: 2877)
Optics: measuring and testing
By shade or color
With color transmitting filter
C250S226000, C250S339020, C250S339070, C356S051000, C356S418000
Reexamination Certificate
active
07315377
ABSTRACT:
A method and a low-cost, robust and simple system for remote sensing and analyzing spectral properties of targets as a means to detect and identify them is introduced. The system can be highly portable but is usable in fixed locations or combination thereof. An aspect of the method and system includes the capability to distribute, modulate, aperture and spectrally analyze radiation emitted or absorbed by a volumetric target chemical species (solid, liquid or gas) or a target surface. Radiation is first collected by a single light gathering device, such as a lens, telescope, or mirror, and then distributed to multiple detectors through spectrally discriminating components and if desired through apertures to achieve this desired detection and identification.
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Stephen K. Holland, et. al., Demonstration of an uncooled LiTaO3-detector-based differential absorption radiometer for remote sensing of chemical, no date.
Gabriel Laufer, “Optimized differential absorption radiometer for remote sensing of chemical effluents,” Applied Optics, vol. 41 (No. 12), p. 2263-2273, (Apr. 20, 2002).
Childers, IV James M.
Holland Stephen Keith
Krauss Roland H.
Laufer Gabriel
Decker Robert J.
Evans F. L.
University of Virginia Patent Foundation
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