Enhanced optical reflective encoder

US8847144B2 · kind B2 · utility

Assignee

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

Inventors

• Yik Foong Soo · Bayan Lepas, MY
• Weng Fei Wong · Bukit Mertajam, MY
• Wee Jin Yeap · Bukit Mertajam, MY

Key dates

• Filing date: Aug 8, 2011
• Grant date: Sep 30, 2014
• Expiry date: Sep 4, 2032

Classification

• Technology area (CPC H): Electricity
• CPC primary: H01L2924/1815
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

An optical encoder and optical encoding system are disclosed. Specifically, an encoder having a light detector elevated relative to a light source is described. The relative height difference between the light source and the light detector enables the optical encoder to minimize noise at the light detector without requiring a separate light baffle between the light source and light detector. Methods of manufacturing and operating such an encoder are also described.