Title:
DISTANCE MEASUREMENT DEVICE
Document Type and Number:
WIPO Patent Application WO/2020/049906
Kind Code:
A1
Abstract:
The purpose of this invention is to provide a distance measurement device that is capable of increasing the amount of light emitted for illumination while smoothly detecting the distance to an object. This distance measurement device (100) comprises: a light source (110) for emitting illumination light (L1) including visible light; an imaging element (121) for receiving reflected light (R1) resulting from the reflection of the illumination light (L1) by an object; and a signal processing circuit (133) for decreasing the emitted illumination light (L1) at a prescribed period, detecting a time when the reflected light (R1) received by the imaging element (121) decreased as a result of the decrease in the illumination light (L1), and measuring the distance to the object on the basis of the detected time. This invention is suitable for use with, for example, a vehicle headlight.
Inventors:
SAITOU SHIGERU
ODAGAWA AKIHIRO
KOYAMA SHINZO
TAKEMOTO MASATO
ODAGAWA AKIHIRO
KOYAMA SHINZO
TAKEMOTO MASATO
Application Number:
PCT/JP2019/030024
Publication Date:
March 12, 2020
Filing Date:
July 31, 2019
Export Citation:
Assignee:
PANASONIC IP MAN CO LTD (JP)
International Classes:
G01S17/10; G01C3/06; G01S17/89; G01S17/93
Domestic Patent References:
| WO2017085916A1 | 2017-05-26 | |||
| WO2015025497A1 | 2015-02-26 |
Foreign References:
| JP2013183460A | 2013-09-12 | |||
| JP2016170114A | 2016-09-23 | |||
| JP2017138110A | 2017-08-10 | |||
| US20110304842A1 | 2011-12-15 |
Attorney, Agent or Firm:
SHIBANO, Masanori et al. (JP)
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