Title :
An 80×60 range image sensor based on 10µm 50MHz lock-in pixels in 0.18µm CMOS
Author :
Stoppa, David ; Massari, Nicola ; Pancheri, Lucio ; Malfatti, M. ; Perenzoni, Matteo ; Gonzo, L.
Author_Institution :
Fondazione Bruno Kessler, IRST, Trento, Italy
Abstract :
A lock-in pixel array based on a fast charge transfer pinned photo-detector for time-of-flight range imaging is presented. Distance measurements at 5-to-20 fps on a 6-to-3m range are reported with a linearity error lower than 0.7% and a repeatability of 5-to-16 cm, while the best achievable precision is 2.7 cm. A demodulation frequency up to 50 MHz is demonstrated with a contrast of 29.5%.
Keywords :
CMOS image sensors; distance measurement; photodetectors; CMOS; charge transfer; demodulation frequency; distance measurement; frequency 50 MHz; lock-in pixel array; lock-in pixels; photodetector; range image sensor; size 0.18 μm; time-of-flight range imaging; CMOS image sensors; Cameras; Demodulation; Frequency modulation; Image sensors; Layout; Phase modulation; Pixel; Sensor arrays; Testing;
Conference_Titel :
Solid-State Circuits Conference Digest of Technical Papers (ISSCC), 2010 IEEE International
Conference_Location :
San Francisco, CA
Print_ISBN :
978-1-4244-6033-5
DOI :
10.1109/ISSCC.2010.5433980
