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Volume: 28 | Article ID: art00014
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A Time-of-Flight CMOS Range Image Sensor Using 4-Tap Output Pixels with Lateral-Electric-Field Control
Taichi KASUGAI
Sang-Man HAN
Hanh TRANG
Taishi TAKASAWA
Satoshi AOYAMA
Keita YASUTOMI
Keiichiro KAGAWA
Shoji KAWAHITO
  DOI :  10.2352/ISSN.2470-1173.2016.12.IMSE-048  Published Online :  February 2016
Abstract

This paper presents a 160×240-pixel CMOS Time-of-Flight (TOF) range imager with a 4-tap charge modulator using pinned-photodiode high-speed lock-in pixels in a 0.11μm CIS process. The proposed lock-in pixel structure using lateral electric field (LEF) control is suitable for implementing a multiple-tap charge modulator while achieving high-speed charge transfer for high time resolution. A CMOS TOF range imager with the multiple-tap charge modulators is expected to have background light cancelling capability in one frame and to improve range resolution with shifted short double light pulses. In this paper, we report the design, implementation and evaluation results of the TOF range imager using the 4-tap LEF modulator (LEFM). The TOF range imager has a range resolution of less than 3.2mm for the range from 1.0m to 2.0m at the frame rate of 15.7fps.

Journal Title : Electronic Imaging
Publisher Name : Society for Imaging Science and Technology
Publisher Location : 7003 Kilworth Lane, Springfield, VA 22151 USA
Subject Areas :
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 DOI 10.2352/ISSN.2470-1173.2016.12.IMSE-048
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Taichi KASUGAI, Sang-Man HAN, Hanh TRANG, Taishi TAKASAWA, Satoshi AOYAMA, Keita YASUTOMI, Keiichiro KAGAWA, Shoji KAWAHITO, "A Time-of-Flight CMOS Range Image Sensor Using 4-Tap Output Pixels with Lateral-Electric-Field Control"  in Proc. IS&T Int’l. Symp. on Electronic Imaging: Image Sensors and Imaging Systems,  2016,  https://doi.org/10.2352/ISSN.2470-1173.2016.12.IMSE-048

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Copyright © Society for Imaging Science and Technology 2016
72010604
Electronic Imaging
2470-1173
Society for Imaging Science and Technology
7003 Kilworth Lane, Springfield, VA 22151 USA
10.2352/ISSN.2470-1173.2016.12.IMSE-048
2470-1173(20160214)2016:12L.1;1-
ei_24701173_v2016n12_input/s21.xml
/ist/ei/2016/00002016/00000012/art00014
Articles
A Time-of-Flight CMOS Range Image Sensor Using 4-Tap Output Pixels with Lateral-Electric-Field Control
KASUGAITaichi
HANSang-Man
TRANGHanh
TAKASAWATaishi
AOYAMASatoshi
YASUTOMIKeita
KAGAWAKeiichiro
KAWAHITOShoji
14022016
2016
12
1
6
2016
This paper presents a 160×240-pixel CMOS Time-of-Flight (TOF) range imager with a 4-tap charge modulator using pinned-photodiode high-speed lock-in pixels in a 0.11μm CIS process. The proposed lock-in pixel structure using lateral electric field (LEF) control is suitable for implementing a multiple-tap charge modulator while achieving high-speed charge transfer for high time resolution. A CMOS TOF range imager with the multiple-tap charge modulators is expected to have background light cancelling capability in one frame and to improve range resolution with shifted short double light pulses. In this paper, we report the design, implementation and evaluation results of the TOF range imager using the 4-tap LEF modulator (LEFM). The TOF range imager has a range resolution of less than 3.2mm for the range from 1.0m to 2.0m at the frame rate of 15.7fps.