Patent · US Active

Three-dimensional triangulational scanner with background light cancellation

US10935371B2 · kind B2 · utility

0Cited by

3References

20Claims

0Family size

Assignee

FARO Technologies, Inc. · US

Inventors

Matthias Wolke · Strohberg, DE
Rolf Heidemann · Zöblitz, DE
Gerrit Hillebrand · Waiblingen, DE
Daniel Döring · Ditzingen, DE

Key dates

Filing date	Apr 22, 2020
Grant date	Mar 2, 2021
Priority date	—
Expiry date	Apr 22, 2040

Classification

Technology area (CPC H)Electricity
CPC primaryH04N23/90
WIPO fieldAudio-visual technology
WIPO sectorElectrical engineering

Abstract

A triangulation scanner system and method of operation is provided. The system includes a projector that alternately projects a pattern of light and no light during first and second time intervals. A camera includes a lens and a circuit with a photosensitive array. The camera captures an image of an object. The photosensitive array has a plurality of pixels including a first pixel. The first pixel including an optical detector and a first and second accumulator. The optical detector produces signals in response to a light levels reflected from a point on the object. The first accumulator sums the signals during the first time intervals to obtain a first summed signal. The second accumulator sums the signals during the second time intervals obtain a second summed signal. A processor determines 3D coordinates of the point based on the projected pattern of light and on the first and second summed signals.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.