Method for measuring position and position measuring device for carrying out said method

US6977368B2 · kind B2 · utility

Assignee

• DR. JOHANNES HEIDENHAIN GMBH · DE

Inventors

• Jörg Drescher · Samerberg, DE
• Mathias Hausschmid · Palling, DE
• Herbert Huber-Lenk · Traunreut, DE
• Herbert Reiter · Los Altos, US
• Johann Streitwieser · Annaberg-Buchholz, DE
• Wolfgang Holzapfel · Obing, DE

Key dates

• Filing date: Oct 13, 2001
• Grant date: Dec 20, 2005
• Expiry date: Feb 25, 2022

Classification

• Technology area (CPC G): Physics
• CPC primary: G01D5/34723
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

A position measuring system that includes a scale and a scanning device that scans the scale. A light source, which emits a light pulse upon receipt of a request signal and an optical fiber that transmits the light pulse from the light source to the scanning device and for illuminating the scale. At least one photo detector that detects the light pulse affected by the scale as a function of its position.