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Proceedings Paper

An indirect time-of-flight measurement technique for sub-mm range resolution using impulse photocurrent response
Author(s): Takahiro Usui; Keita Yasutomi; Han San Man; Taishi Takasawa; Keiichiro Kagawa; Shoji Kawahito
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Paper Abstract

This paper presents a new ToF measurement technique using an impulse photocurrent response. In the proposed technique, a laser with a short pulse width for light source, which can be regarded as an impulse input for a detector. As a result, the range calculation is determined only by photocurrent response of the detector. A test chip fabricated in a 0.11um CIS technology employs a draining-only modulation pixel, which enables a high speed charge modulation. The measurable range measured to be 50 mm within nonlinear error of 5% and the average range resolution of 0.21 mm is achieved.

Paper Details

Date Published: 4 March 2014
PDF: 6 pages
Proc. SPIE 9022, Image Sensors and Imaging Systems 2014, 90220W (4 March 2014); doi: 10.1117/12.2041160
Show Author Affiliations
Takahiro Usui, Shizuoka Univ. (Japan)
Keita Yasutomi, Shizuoka Univ. (Japan)
Han San Man, Shizuoka Univ. (Japan)
Taishi Takasawa, Shizuoka Univ. (Japan)
Keiichiro Kagawa, Shizuoka Univ. (Japan)
Shoji Kawahito, Shizuoka Univ. (Japan)

Published in SPIE Proceedings Vol. 9022:
Image Sensors and Imaging Systems 2014
Ralf Widenhorn; Antoine Dupret, Editor(s)

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