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Proceedings Paper

A 120x160 pixel CMOS range image sensor based on current assisted photonic demodulators
Author(s): Lucio Pancheri; David Stoppa; Nicola Massari; Mattia Malfatti; Lorenzo Gonzo; Quazi D. Hossain; Gian-Franco Dalla Betta
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Paper Abstract

In this paper a Time-Of-Flight range camera based on Current Assisted Photonic Demodulators is presented. The sensor, fabricated in a 0.18 μm CMOS technology, features 120x160 pixel resolution with 10μm pixel pitch and 24% fill factor. Pixel, camera and system architectures are described highlighting the most important design issues, and a selection of experimental results is presented. The chip has a power consumption of 200mW, mainly due to the contribution of modulation current. A range camera system was realized using the proposed sensor, a focusing optics providing a 23°x30° field of view, and a 3-LED illumination module delivering 140mW optical power on the target. The system is capable of acquiring a stream of 7 3D frames/s with a maximum non-linearity of 3.3% in the range 1.2m-3.7m and a precision better than 10 cm at 2m and 20 cm at 3m.

Paper Details

Date Published: 13 May 2010
PDF: 9 pages
Proc. SPIE 7726, Optical Sensing and Detection, 772615 (13 May 2010);
Show Author Affiliations
Lucio Pancheri, Fondazione Bruno Kessler (Italy)
David Stoppa, Fondazione Bruno Kessler (Italy)
Nicola Massari, Fondazione Bruno Kessler (Italy)
Mattia Malfatti, Fondazione Bruno Kessler (Italy)
Lorenzo Gonzo, Fondazione Bruno Kessler (Italy)
Quazi D. Hossain, Univ. degli Studi di Trento (Italy)
Gian-Franco Dalla Betta, Univ. degli Studi di Trento (Italy)

Published in SPIE Proceedings Vol. 7726:
Optical Sensing and Detection
Francis Berghmans; Anna Grazia Mignani; Chris A. van Hoof, Editor(s)

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