IMAGERS WITH STRUCTURES FOR NEAR FIELD IMAGING
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United States of America Patent
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N/A
Issued Date -
Aug 9, 2012
app pub date -
Jul 22, 2011
filing date -
Feb 3, 2011
priority date (Note) -
Abandoned
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Abstract
An imaging system may include an image sensor configured to image materials at near field imaging ranges from the image sensor. Near field imaging ranges may be on the scale of 1-10 pixel sizes from the image sensor. The materials being imaged may be fluorescent materials that emit radiation at fluorescent wavelengths when the materials are exposed to radiation at excitation wavelengths. The image sensor may include color filter materials that block radiation at excitation wavelengths while transmitting radiation at fluorescent wavelengths. The image sensor may include light guides that reduce cross-talk between pixels and improve localization of emitted radiation, thereby allowing the image sensor to determine which pixel(s) is (are) located beneath the materials being imaged. The light guides may include may include sloped sidewalls and may include reflective sidewalls, which may improve radiation collection (e.g., efficiency) and localization of emitted radiation.
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