Optics: measuring and testing – By polarized light examination – With light attenuation
Patent
1995-03-09
1997-04-29
Hantis, K.
Optics: measuring and testing
By polarized light examination
With light attenuation
2505594, G01B 1124
Patent
active
056254563
ABSTRACT:
A method is disclosed for identifying an object. The method includes the steps of (a) providing individual ones of objects within a predetermined class of objects with a gain medium comprised of an electromagnetic radiation emitting and amplifying first phase and an electromagnetic radiation scattering second phase, the gain medium being responsive to electromagnetic radiation having a first wavelength for emitting electromagnetic radiation with wavelengths within a predetermined band of wavelengths; (b) irradiating the objects with the first wavelength; (c) detecting an emission from the irradiated objects, the emission including one or more second wavelengths that are within the predetermined band of wavelengths; and (d) identifying an object as belonging to a predetermined class of objects from the detected emission. Also disclosed is a method for detecting the presence of a structure within an object, which also employs the gain medium and the step of irradiating.
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Brown University Research Foundation
Hantis K.
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