Radiant energy – Photocells; circuits and apparatus – Photocell controlled circuit
Reexamination Certificate
2007-11-06
2007-11-06
Epps, Georgia (Department: 2878)
Radiant energy
Photocells; circuits and apparatus
Photocell controlled circuit
C250S226000, C250S578100, C356S410000, C356S411000, C356S434000, C356S435000
Reexamination Certificate
active
11316438
ABSTRACT:
An integrated circuit (IC) includes a photosensor array, some cells of which are reference cells that photosense throughout an application's energy range, while other cells of which are subrange cells that photosense within respective subranges. For example, the subrange cells can receive photons in their respective subranges from a transmission structure that has laterally varying properties, such as due to varying optical thickness. The reference cells may be uncoated or may also receive photons through a transmission structure such as a gray filter. Subrange cells and reference cells may be paired in adjacent lines across the array, such as rows. Where photon emanation can vary along a path, quantities of incident photons photosensed by subrange cells along the path can be adjusted based on quantities photosensed by their paired reference cells, such as with normalization.
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Kiesel Peter
Schmidt Oliver
Wolst Oliver
Beran James T.
Epps Georgia
Leading-Edge Law Group, PLC
Palo Alto Research Center Incorporated
Yam Stephen
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