Planar laser illumination and imaging (PLIIM) based engine

US7673803B2 · kind B2 · utility

Assignee

• METROLOGIC INSTRUMENTS, INC. · US

Inventors

• Constantine J. Tsikos · Voorhees, US
• C. Harry Knowles · Moorestown, US
• Xiaoxun Zhu · Marlton, US
• Michael Schnee · Chester, US
• Ka Man Au · Philadelphia, US
• Allan Wirth · Bedford, US
• Timothy Good · Blackwood, US
• Andrew Jankevics · Westford, US
• Sankar Ghosh · Philadelphia, US
• Charles A. Naylor · Sewell, US
• Thomas Amundsen · Turnersville, US
• Robert Blake · Woodbury Heights, US
• William Svedas · Deptford, US
• Shawn Defoney · Runnemede, US
• Edward Skypala · Blackwood, US
• Pirooz Vatan · Lexington, US
• Russell Joseph Dobbs · Cherry Hill, US
• George Kolis · Pennsauken, US
• Mark S. Schmidt · San Diego, US
• Jeffery Yorsz · Winchester, US
• Patrick Giordano · Glassboro, US
• Stephen J. Colavito · Westtown, US
• David Wilz · Sewell, US
• Barry E. Schwartz · Haddonfield, US
• Steven Y. Kim · Cambridge, US
• Dale Fisher · Willow View Lane, US
• Jon Van Tassell · Winthrop, US

Key dates

• Filing date: Oct 30, 2007
• Grant date: Mar 9, 2010
• Expiry date: Oct 30, 2027

Classification

• Technology area (CPC G): Physics
• CPC primary: G06K7/10732
• WIPO field: Computer technology
• WIPO sector: Electrical engineering

Abstract

A planar laser illumination and imaging (PLIIM) based engine including; an engine housing having light transmission aperture; an image formation and detection module and having an image detection array and image formation optics with a field of view (FOV) extending from the image detection array, through the light transmission aperture and onto an object moving relative to the engine housing during object illumination and imaging operations; a planar laser illumination beam (PLIB) producing device, and having at least one visible laser illumination source arranged in relation to the image formation and detection module, for producing a planar light illumination beam (PLIB), and projecting the planar light illumination beam through light transmission aperture and oriented such that the plane of the PLIB is coplanar with the field of view of the image formation and detection module so that the object can be simultaneously illuminated by the planar light illumination beam and imaged within the field of view and onto the image detection array for detection as a digital linear image of the object; a laser despeckling mechanism for reducing the coherence of the PLIB during object illumin…