Ambient infrared detection in solid state sensors

Details Ambient infrared detection in solid state sensors Ambient infrared detection in solid state sensors

2006-08-31

2010-06-15

Sohn, Seung C (Department: 2878)

Radiant energy

Photocells; circuits and apparatus

Optical or pre-photocell system

C250S2140AL, C250S2140LS, C250S332000, C257S440000, C348S272000, C356S402000, C356S419000

Reexamination Certificate

active

07737394

ABSTRACT:
A solid state imaging device includes an array of active pixels and an infrared cut filter formed over the sensor. Optionally, a slot in the infrared cut filter allows infrared illumination to reach the sensor to be detected by pixels covered by a visually opaque filter and surrounded by pixels of special types that limit charge leakage and enable high dynamic range sensing of infrared illumination. A ratio of average infrared signal to average brightness indicates an amount of infrared illumination reaching the imaging device.

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