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This is a record of a document published elsewhere, first published by the United States Patent and Trademark Office, as US-12605800-B2, on 21 April 2026. OpenTechnical did not first disclose it. The identifier, hashes and timestamps below record what this library served and when, not when the material became public. View the original.

OT-2026-000000259

Distance measurement device, distance measurement method, and machine tool

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Manufacturing & Assembly Equipment › Machining Systems
Original source
US-12605800-B2, the United States Patent and Trademark Office, 21 April 2026
Document SHA-256
0c0fcb0ab91cad98e95b984ec660700f021e4fb5851ca34b45c7e83ce3c1ad6a

Abstract

A distance measurement device includes: a signal acquisition unit to acquire an electric signal based on interference light from an optical sensor device that splits sweep light having a periodically changing frequency into reference light and irradiation light to be emitted toward an object to be measured, irradiates the object with the irradiation light, generates interference light by causing the reference light to interfere with reflected light that is the irradiation light reflected by the object, and generates the electric signal based on the generated interference light; a frequency calculation unit to calculate, on the basis of the electric signal based on the interference light, a peak frequency of the electric signal using LASSO regression; a distance measurement unit to measure, on the basis of the peak frequency, a distance from a predetermined reference point to the object; and a distance output unit to output distance information indicating the distance.

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Citation

OpenTechnical Publication OT-2026-000000259, “Distance measurement device, distance measurement method, and machine tool,” published September 15, 2026 at 19:02:40 UTC, https://opentechnical.org/p/OT-2026-000000259.

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