Image sensors having non-uniform light shields

Details Image sensors having non-uniform light shields Image sensors having non-uniform light shields

2008-11-25

2011-11-15

Selby, Gevell (Department: 2622)

Television

Camera, system and detail

Solid-state image sensor

C348S243000, C348S311000

Reexamination Certificate

active

08059180

ABSTRACT:
An image sensor includes a pixel array divided into two or more corresponding sub-arrays. The pixel array includes an imaging area having a plurality of pixels and one or more reference areas each having a plurality of reference pixels. A continuous non-uniform light shield overlies, or individual non-uniform light shields overlie, each reference pixel in a row or column of reference pixels. An image sensor can include one or more rows or columns of reference pixels. An output channel is electrically connected to each sub-array for receiving the signals generated by the plurality of pixels and reference pixels in each sub-array. The pixel signals generated by the reference pixel pairs in one or more rows or columns in corresponding sub-arrays are used to determine one or more correction factors that compensate for the differences or mismatches between the output channels.

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International Preliminary Report on Patentability for PCT Application No. PCT/US2009/006232 mailed May 31, 2011, 7 pages.
International Search Report and Written Opinion for PCT Application No. PCT/US2009/006232 mailed Feb. 25, 2010, 10 pages.

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