Patent · US Active

Position encoder

US7405393B2 · kind B2 · utility

2Cited by

12References

12Claims

0Family size

Assignee

Xerox Corporation · US

Inventors

David D. Martenson · Milwaukie, US
David L. Knierim · Wilsonville, US

Key dates

Filing date	Jun 15, 2005
Grant date	Jul 29, 2008
Priority date	—
Expiry date	Aug 10, 2026

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB41J19/202
WIPO fieldMeasurement
WIPO sectorInstruments

Abstract

An optical encoder that includes an optical grating and a quadrature optical encoder sensor that move relative to each other. The optical grating includes a first encoder bar and a plurality of second encoder bars, wherein the first encoder bar is optically configured to change an amplitude of an output of the quadrature optical encoder sensor.

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