Optical encoder device

US6966623B2 · kind B2 · utility

Assignee

• AGILENT TECHNOLOGIES, INC. · US

Inventors

• Kok Fo · Bukit Mertajam, MY
• Kee Yean Ng · Bukit Mertajam, MY
• Chee-Keong Chong · Merang, MY
• Kean Loo Keh · Air Itam, MY
• Herbert W. Loesch · San Jose, US

Key dates

• Filing date: Dec 16, 2002
• Grant date: Nov 22, 2005
• Expiry date: Mar 15, 2023

Classification

• Technology area (CPC G): Physics
• CPC primary: G01D5/3473
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

An optical encoder device is provided with an optical encoder for detecting codewheel/codestrip positions, an optical encoder housing for accommodating the optical encoder, a first tapered guidepost protruding from a sidewall of the optical encoder housing, the first guidepost having a star-shaped cross-section and being arranged adjacent to the optical encoder, and a second tapered guidepost protruding form the sidewall of the optical encoder housing and extending substantially parallel to the first guidepost, the second guidepost having a diamond-shaped cross-section and being arranged remote from the optical encoder.