Optics: measuring and testing – Of light reflection – With diffusion
Patent
1995-05-12
1997-12-23
Font, Frank G.
Optics: measuring and testing
Of light reflection
With diffusion
385121, 356425, 2502272, 25022723, 25022729, G01N 2147, G02B 604, G01J 346
Patent
active
057011818
ABSTRACT:
A fiber optic diffuse light reflectance sensor is disclosed. The sensor employs illumination optical fibers to carry light emitted from a high-intensity, narrow bandwidth LED to a baffle in a readhead where the optical fibers reflect the light off of a reagent test strip. The illumination optical fibers are randomly oriented to create a more uniform light source. The light is reflected off of a pad on a reagent test strip to detect the presence of non-hemolyzed trace and hemolyzed occult blood. The reflected light must pass through another baffle to a bi-convex lens where it is focused onto a detection bundle of optical fibers. The detection bundle is optically coupled with a CCD, where the optical signal is converted to an electrical one for processing and analysis.
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Boiarski Anthony
Dosmann Andrew
Bayer Corporation
Coe Roger N.
Eisenberg Jason D. Vierra
Font Frank G.
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