TIME-OF-FLIGHT DISTANCE MEASURING DEVICE AND METHOD FOR DETECTING MULTIPATH ERROR

WIPO Patent Application WO/2017/138032

A1

The present disclosure relates to a time-of-flight distance measuring device. The device includes a light source (24) that emits emitted light toward an object (12), a light receiver (26) that includes photodetectors (80). The light receiver (26) detects reflected light reflected by the object. A first controller (28) controls the light source to emit the emitted light such that the emitted light includes a fundamental component and at least one harmonic component. A second controller (30) generates control signals (DN) and outputs each of the control signals to a respective photodetectors. A calculator (62, 64) calculates amplitudes (A1, A2) and phase angles (θ1, θ2). An error estimator (68) estimates an error value (ΔL) of a multipath error. The second controller generates the plurality of control signals to simultaneously sense the fundamental component and the at least one harmonic component.

NAGAI TOSHIAKI (JP)
POPP MARTIN (CH)

PCT/JP2016/000638

August 17, 2017

February 08, 2016

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DENSO CORP (JP)
ESPROS PHOTONICS AG (CH)

G01S17/36; G01S7/4911; G01S7/4915; G01S7/497; G01S17/894

WO2012014077A2

2012-02-02

US20140340569A1	2014-11-20
US20150362586A1	2015-12-17
JP5579893B2	2014-08-27
JP2010096730A	2010-04-30
JP5585903B2	2014-09-10
JP2010025906A	2010-02-04
US20140340569A1	2014-11-20
US20120033045A1	2012-02-09
US20080000709A1	2008-01-03
US20150013938A1	2015-01-15

LARRY LI: "Time-of-Flight Camera - An Introduction", 31 May 2014 (2014-05-31), XP055300210, Retrieved from the Internet [retrieved on 20160906]

KIN, Junhi (JP)

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