The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 18, 2025
Filed:
Nov. 18, 2021
Fanuc Corporation, Yamanashi, JP;
Fumikazu Warashina, Yamanashi, JP;
FANUC CORPORATION, Yamanashi, JP;
Abstract
A three-dimensional measurement device includes a projector for scanning and projecting reference light onto an object, and a light receiver for receiving the reflected reference light by the object. The light receiver monitors a luminance change for each pixel and outputs an event when the luminance change meets or exceeds a preset threshold. Each event includes the pixel's position, the time of the luminance change, and a polarity indicating the direction of the luminance change. The device also includes a calculator that selects a group of events where polarity transitions from positive to negative, calculates a passage time of the reference light through each pixel based on the event's time and threshold luminance value, and calculates the object's three-dimensional information using triangulation from the passage times.