Patent · US Active

Code disk, optical encoder, and motor system

US8525459B2 · kind B2 · utility

0Cited by

25References

20Claims

0Family size

Assignee

Heidenhain Corporation · US

Inventors

Robert Setbacken · Lompoc, US
Ruth E. Franklin · Lompoc, US

Key dates

Filing date	Jul 15, 2010
Grant date	Sep 3, 2013
Priority date	—
Expiry date	May 19, 2031

Classification

Technology area (CPC G)Physics
CPC primaryG01D5/34792
WIPO fieldMeasurement
WIPO sectorInstruments

Abstract

An optical encoder includes a light source, a light sensor array, and a code disk having a data track and a commutation pattern. The commutation pattern includes first, second, and third commutation tracks, each including a series of apertures configured to allow light to continuously pass from the light source to a respective light sensor of the light sensor array as the series of apertures passes over the first light sensor. The relative positions of the first, second, and third commutation tracks correspond to a commutation sequence of a brushless motor.

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