High performance CMOS image sensor for digitally fused day/night vision systems
2010
We present the performance of a CMOS image sensor optimized for next generation fused day/night vision systems.
The device features 5T pixels with pinned photodiodes on a 6.5μm pitch with integrated micro-lens. The 5T pixel
architecture enables both correlated double sampling (CDS) to reduce noise for night time operation, and a lateral antiblooming
drain for day time operation. The measured peak quantum efficiency of the sensor is above 55% at 600nm,
and the median read noise is less than 1e- RMS at room temperature. The sensor features dual gain 11-bit data output
ports and supports 30 fps and 60 fps. The full well capacity is greater than 30ke-, the dark current is less than 3.8pA/cm 2
at 20oC, and the MTF at 77 lp/mm is 0.4 at 550nm. The sensor also achieves an intra-scene linear dynamic range of
greater than 90dB (30000:1) for night time operation, and an inter-scene linear dynamic range of greater than 150dB for
complete day/night operability.
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