Reflective encoders with various emitter-detector configurations

US7385178B2 · kind B2 · utility

Assignee

• Avago Technologies ECBU IP Pte. Ltd. · SG

Inventors

• Yee Loong Chin · Batu Gajah, MY
• Siang Leong Foo · Bukit Mertajam, MY
• Weng Fei Wong · Bukit Mertajam, MY
• Saiful Saidan · Loveland, US
• Cheng Why Tan · Bukit Mertajam, MY
• Wee Jin Yeap · Bukit Mertajam, MY

Key dates

• Filing date: Oct 26, 2005
• Grant date: Jun 10, 2008
• Expiry date: Mar 5, 2026

Classification

• Technology area (CPC G): Physics
• CPC primary: G01D5/34715
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

Optical encoders having one or more of a number of disclosed features are disclosed. The features of the optical encoder in accordance with the present invention include a symmetrical (for example, circular) emitter; baffle between the emitter and a detector; double-dome or single-dome encapsulant; multiple detector; and multiple (at least three) data channels.