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Proceedings Paper

Operation and performance of a color image sensor with layered photodiodes
Author(s): David L. Gilblom; Sang Keun Yoo; Peter Ventura
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Paper Abstract

A silicon image sensor has been developed and placed in production using standard 0.18 μm CMOS process having three stacked photodiodes per pixel location to provide full-color imaging without external color filters. With a fill factor exceeding 50%, this image sensor achieves approximately 45% peak quantum efficiency in the mid range visible and provides usable response extending from the near-ultraviolet to the near-infrared. Initial results from a commercial digital still camera indicate that this device can produce excellent color reproduction with equivalent ISO film speeds from 100 to 400 and that it produces images free from color artifacts common in images made with sensors incorporating color filter arrays. Development is now underway on camera equipment designed to operate this image sensor in a variety of scan modes.

Paper Details

Date Published: 10 October 2003
PDF: 14 pages
Proc. SPIE 5074, Infrared Technology and Applications XXIX, (10 October 2003); doi: 10.1117/12.498557
Show Author Affiliations
David L. Gilblom, Alternative Vision Corp. (United States)
Sang Keun Yoo, HanVision Co., Ltd. (South Korea)
Peter Ventura, Foveon, Inc. (United States)

Published in SPIE Proceedings Vol. 5074:
Infrared Technology and Applications XXIX
Bjorn F. Andresen; Gabor F. Fulop, Editor(s)

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