Optical waveguides – Optical waveguide sensor
Reexamination Certificate
2007-03-27
2007-03-27
Leung, Quyen (Department: 2874)
Optical waveguides
Optical waveguide sensor
C385S013000
Reexamination Certificate
active
11207491
ABSTRACT:
A biosensor substrate structure is provided that eliminates the effects of optical interference of light reflected from a substrate/air interface with light reflected by the biosensor's active surface by incorporating a roughened or “non-specular” surface on the lower surface of the substrate opposite the grating. One can generate a useful non-specular or “anti-interference” surface in a number of ways in accordance with this disclosure, including (1) by adding a coating of optically diffuse material, such as UV cured acrylate, to the sensor substrate, (2) etching or otherwise roughening the surface of the sensor substrate, or (3) applying a grating structure to the surface.
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Cunningham Brian T.
Schulz Stephen C.
Leung Quyen
McDonnell Boehnen & Hulbert & Berghoff LLP
SRU Biosystems Inc.
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