On page 96 of the May 2004 issue of the trade magazine Photonics
Spectra there was an interesting one-page article, "How an Imaging
Sensor Feeds Off Light", by Dave Litwiller of Dalsa Corp
(http://vfm.dalsa.com), comparing CCDs to CMOS image sensors.
Dalsa makes cameras and image sensors for machine vision
applications. Their "Pantera TF 1M60" camera uses a 1024x1024
monochrome CCD with 12-micron square pixels, with 12-bit pixel depth
and 66-dB dynamic range, at up to 60 full frames per second. The
active area of the chip is 12.3 by 12.3 mm. They make their own
chips.
The following table is taken from the article.
Fill factor (fraction of pixel that's active): CCD= high, CMOS= moderate.
System Noise: CCD= low, CMOS= moderate to high.
System (=camera) complexity: CCD= high, CMOS= low.
Sensor (=chip) complexity: CCD=low, CMOS= high.
Camera Components: CCD={PC board, multiple chips, lens}, CMOS={chip, lens}.
Dynamic Range: CCD= high, CMOS= moderate. (The more noise, the less
dynamic range.)
Uniformity (of pixel sensitivity): CCD= high, CMOS= low to moderate.
Uniform Shuttering: CCD= fast, common; CMOS= poor.
Joe Gwinn
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