Patent · US Active

Cartesian coordinate measurement for rotating system

US8314941B2 · kind B2 · utility

2Cited by
9References
23Claims
0Family size

Assignee

Inventor

Key dates

Filing dateDec 4, 2009
Grant dateNov 20, 2012
Priority date—
Expiry dateJan 9, 2031

Classification

  • Technology area (CPC G)Physics
  • CPC primaryG01D5/347
  • WIPO fieldMeasurement
  • WIPO sectorInstruments

Abstract

In a measurement device for measuring a peripheral position in a Cartesian coordinate system, a rotating laser source is configured to emit a laser beam along a radius of a rotator. A reflector is configured to reflect the laser beam in a direction orthogonal to a path of the laser beam, and a scale having a pattern of transparent and reflective areas is positioned at a peripheral position of the measurement device. A detector is configured to provide a sequence of pulses by detecting a reflex or transmission of the rotating laser beam while the laser scans over the scale. The sequence of pulses correspond to Cartesian coordinates of the system.

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