High performance fluorescent optical sensor

Details High performance fluorescent optical sensor High performance fluorescent optical sensor

2005-09-06

2005-09-06

Lauchman, Layla G. (Department: 2877)

Optics: measuring and testing

Photometers

Photoelectric

C356S436000, C436S164000, C436S165000, C436S527000, C436S172000, C422S082050, C422S082080, C422S082110, C250S227140, C250S458100, C250S459100

Reexamination Certificate

active

06940590

ABSTRACT:
An optical sensor device for determining the presence or concentration of an analyte, contains a waveguide disposed over a light source and a light detector mounted on a surface of a substrate and separated by an internal baffle, wherein the waveguide has a thickness corresponding to a far field emission point of the light source as determined by a light shielding baffle between the light source and light detector. An analyte indicator matrix is disposed on the outer surface of the waveguide. The sensor device geometry takes advantage of only direct illumination of the indicator matrix, and direct collection of indicator matrix illumination, without any significant reflection by said waveguide. Undesirable light noise generated by the light source passes directly out of the device through the waveguide.

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