4 March 2014 An indirect time-of-flight measurement technique for sub-mm range resolution using impulse photocurrent response
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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.
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Takahiro Usui, Takahiro Usui, Keita Yasutomi, Keita Yasutomi, Han San Man, Han San Man, Taishi Takasawa, Taishi Takasawa, Keiichiro Kagawa, Keiichiro Kagawa, Shoji Kawahito, Shoji Kawahito, } "An indirect time-of-flight measurement technique for sub-mm range resolution using impulse photocurrent response", Proc. SPIE 9022, Image Sensors and Imaging Systems 2014, 90220W (4 March 2014); doi: 10.1117/12.2041160; https://doi.org/10.1117/12.2041160
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