Fluorescent activated, spatially quantitative light detector

Details Fluorescent activated, spatially quantitative light detector Fluorescent activated, spatially quantitative light detector

G - Physics

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314/28, 73/51.5

G03G 15/04 (2006.01) C12N 7/00 (2006.01) C12N 9/00 (2006.01) G01J 1/58 (2006.01) G03G 15/22 (2006.01) H01L 31/00 (2006.01) H04N 1/028 (2006.01)

Patent

CA 1173491

-1- ABSTRACT A fluorescent-activated spatially quantitative light detector for sensing light reflected from an information bearing surface, said light detector comprising a generally cylindrical rod containing a fluorescent dye dispersed throughout a generally transparent medium and a photosensor at one end of, and in operative association therewith. The reflected light incident on the light detector is absorbed by said dye and reradiated at the fluorescent wavelength, a portion of this reradiated light reaching the photosensor causing an output signal to be generated.

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