Laser beam despeckling devices

US8172141B2 · kind B2 · utility

Assignee

• METROLOGIC INSTRUMENTS, INC. · US

Inventors

• C. Harry Knowles · Moorestown, US
• Xiaoxun Zhu · Marlton, US
• Timothy Good · Blackwood, US
• Tao Xian · Readington, US
• Anatoly Kotlarsky · Holland, US
• Michael Veksland · Marlton, US
• Mark Hernandez · Bridgeton, US
• John Gardner · Mullica Hill, US
• Steven Essinger · Philadelphia, US
• Patrick Giordano · Glassboro, US
• Sean Philip Kearney · Marlton, US
• Mark Schmidt · Williamstown, US
• John A. Furlong · Woodbury, US
• Nicholas Ciarlante · Teaneck, US
• Yong Liu · Sunnyvale, US
• Jie Ren · Lo Wu, CN
• Xi Tao · Suzhou, CN
• JiBin Liu · Beijing, CN
• Ming Zhuo · Suzhou, CN
• Duane Ellis · Medford, US

Key dates

• Filing date: Oct 30, 2007
• Grant date: May 8, 2012
• Expiry date: Jan 26, 2031

Classification

• Technology area (CPC G): Physics
• CPC primary: G06K2207/1012
• WIPO field: Computer technology
• WIPO sector: Electrical engineering

Abstract

A multi-stage laser beam despeckling device including a first laser beam despeckling module for optically multiplexing an input laser beam into a temporal/spatial coherence-reduced output laser beam; and a second laser beam despeckling module, optically coupled to the first laser beam despeckling module, for receiving the temporal/spatial coherence-reduced as an input laser beam to the second despeckling module and producing a further temporal/spatial coherence-reduced output laser beam.