LASER RADAR DEVICE - MITSUBISHI ELECTRIC CORP

Title:

LASER RADAR DEVICE

Document Type and Number:

WIPO Patent Application WO/2018/131083

Kind Code:

A1

Abstract:

Conventional laser radar devices have had a problem in which variation between the scanner angle during beam transmission and the scanner angle during beam reception results in deviation between the reception field of view and beam arrival direction and degraded reception sensitivity. A laser radar device according to the present invention is provided with: a light source for generating laser light; a modulator for modulating the laser light so as to produce transmission light; a scanner for irradiating the transmission light obtained through modulation by the modulator onto a target, receiving reflected light from the target as reception light, and scanning the transmission light and reception light; a receiver for receiving the reception light output by the scanner; a corrector that is provided between the scanner and receiver and is for correcting, according to the delay time between the transmission light and reception light, the optical axis deviation resulting from the deviation caused by the scanner between the transmission angle of the transmission light and the reception angle of the reception light; and a controller for calculating the amount of optical axis deviation according to the delay time and generating a control signal for controlling the corrector on the basis of the optical axis deviation amount.

Inventors:

NISHINO YUICHI (JP)
ITO YUSUKE (JP)
IMAKI MASAHARU (JP)
KAMEYAMA SHUMPEI (JP)

Application Number:

PCT/JP2017/000540

Publication Date:

July 19, 2018

Filing Date:

January 11, 2017

Export Citation:

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Assignee:

MITSUBISHI ELECTRIC CORP (JP)

International Classes:

G01S7/497; G01S17/10

Foreign References:

JP2007316016A	2007-12-06
JP2006340075A	2006-12-14
JP2012202857A	2012-10-22
US20090123158A1	2009-05-14