Patent ID: 7602496
Filing Date: 2009-10-13
Classification: G01J,G01N

Abstract:
1. An optical sensor, comprising: an optical emitter mounted on a substrate; an optical detector mounted on said substrate adjacent to said optical emitter; a biologically reactive surface located opposite said substrate, optical emitter and optical detector, wherein at least a portion of said biologically reactive surface is exposed to a sample and an optical property of said biologically reactive surface changes upon binding to a target material when the target material is present in the sample, wherein said optical emitter emits light onto said biologically reactive surface, and said optical detector receives light from said biologically reactive surface and is operable to output a signal that is indicative of whether the target material has bound to said biologically reactive surface; and calibration circuitry interconnected to said optical emitter and optical detector that outputs a signal indicative of whether the target material has bound to said biologically reactive surface.