Title:
DISTANCE MEASUREMENT DEVICE
Document Type and Number:
WIPO Patent Application WO/2024/004166
Kind Code:
A1
Abstract:
This distance measurement device comprises: a light projection unit for beaming light from a light source onto a rotating or swinging mirror, and projecting the obtained scan light onto an object; a light-receiving unit for detecting a change in luminance of the object due to the scan light; a distance information calculation unit for calculating the distance to the object on the basis of the scan angle of the scan light obtained from time information regarding the change in luminance of the object due to the scan light; and a direction-changing unit for changing the direction of the scan light so as to enable the light-receiving unit to detect reference light in a specific scan direction. The distance information calculation unit deems time information regarding a change in luminance produced in the light-receiving unit due to reference light whose direction has been changed by the direction-changing unit to be a reference time, and deems time information regarding a change in luminance of the object to be a relative value with respect to the reference time.
Inventors:
NAKAMURA MINORU (JP)
Application Number:
PCT/JP2022/026365
Publication Date:
January 04, 2024
Filing Date:
June 30, 2022
Export Citation:
Assignee:
FANUC CORP (JP)
International Classes:
G01C3/06; G01B11/24
Foreign References:
| JPH10206132A | 1998-08-07 | |||
| JP2016033482A | 2016-03-10 | |||
| JP2021032763A | 2021-03-01 |
Attorney, Agent or Firm:
AOKI, Atsushi et al. (JP)
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