Multi-axis optical encoders

US7525085B2 · kind B2 · utility

Assignee

• Avago Technologies General IP (Singapore) Pte. Ltd. · SG

Inventors

• Saiful Saidan · Loveland, US
• Theng Hooi Yeoh · Bukit Mertajam, MY
• Chiang Sun Cheah · Butterworth, MY
• Jiin Cheang Cheong · Bayan Lepas, MY
• Chin Heong Yeoh · Bukit Mertajam, MY

Key dates

• Filing date: Apr 14, 2006
• Grant date: Apr 28, 2009
• Expiry date: Jun 2, 2026

Classification

• Technology area (CPC G): Physics
• CPC primary: G01D2205/90
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

An optical encoding apparatus for the detection of position and/or motion of a mechanical device includes a codescale, an encoder housing having one or more portions and a light-detecting sensor embedded within the encoder housing, wherein the light-detecting sensor is capable of sensing a pattern produced by the codescale superimposed on the light-detecting sensor, and wherein the light-detecting sensor includes a two-dimensional array of light detection elements having dimensions n-by-m where n and m are both integers greater than 4.