Optics: measuring and testing – Of light reflection
Patent
1995-08-29
1997-05-27
Gonzalez, Frank
Optics: measuring and testing
Of light reflection
356136, 356352, 422 8208, 422 8211, G01N 2155, G01N 2141, G01B 902
Patent
active
056337248
ABSTRACT:
An apparatus for detecting a target substance in a pixel array is provided. The apparatus has a light source to emit a light suitable for exciting the target substance in the array, a total internal reflection (TIR) member, and a light detector. The TIR member has a TIR surface on which the array is located. The light from the light source passes into the TIR member and is reflected by the TIR surface. The array is within an evanescent field region at the TIR surface. The light detector is adapted to detect light emitted from the array as a result of evanescent excitation of the target substance.
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King David A.
Seher Jens-Peter
Gonzalez Frank
Hewlett--Packard Company
Merlino Amanda
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