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:
Sep. 17, 2024
Filed:
Nov. 24, 2020
Nikon Vision Co., Ltd., Tokyo, JP;
Takehito Nonomura, Nishitama-gun, JP;
NIKON VISION CO., LTD., Tokyo, JP;
Abstract
With a ranging device and a ranging method according to the present embodiment, occurrence of a first event in which the intensity of a detection signal corresponding to reflected light output from a detection unit exceeds a first threshold and occurrence of a second event in which the intensity falls below a second threshold smaller or larger than the first threshold are counted for each predetermined elapsed time after the measuring beam emission from a projector. Based on integration results (i.e., histograms) obtained by integrating the counts for a plurality of times of light emission, a target signal derived from the reflected light can be extracted from the detection signal including random noise derived from external light, a detection time from the light emission to the detection by the detection unit can be determined, and a distance to an object can be precisely determined.