Patents by Inventor Russell Joseph Dobbs

Russell Joseph Dobbs has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 7832643
    Abstract: A hand-supportable planar laser illumination and imaging (PLIIM) based code symbol reader includes: a hand-supportable housing having light transmission aperture; a linear image formation and detection module having a linear image detection array; and a planar laser illumination beam (PLIB) producing device having at least one visible laser diode (VLD) for producing a planar light illumination beam (PLIB). The code symbol reader further includes image grabber for grabbing digital linear images formed and detected by the image formation and detection module, an image data buffer for buffering the digital linear images grabbed by the image grabber and constructing a two-dimensional image from a series of buffered linear digital images, and an image processing computer for processing the buffered two-dimensional digital image so as to read code symbols graphically represented in the two-dimensional digital linear image.
    Type: Grant
    Filed: October 30, 2007
    Date of Patent: November 16, 2010
    Assignee: Metrologic Instruments, Inc.
    Inventors: Constantine J. Tsikos, C. Harry Knowles, Xiaoxun Zhu, Michael D. Schnee, Ka Man Au, Allan Wirth, Timothy A. Good, Andrew Jankevics, Sankar Ghosh, Charles A. Naylor, Thomas Amundsen, Robert Blake, William Svedas, Shawn Defoney, Edward Skypala, Pirooz Vatan, Russell Joseph Dobbs, George Kolis, Mark C. Schmidt, Jeffery Yorsz, Patrick A. Giordano, Stephen J. Colavito, David W. Wilz, Sr., Barry E. Schwartz, Steven Y. Kim, Dale Fisher, Jon Van Tassell
  • Patent number: 7673803
    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
    Type: Grant
    Filed: October 30, 2007
    Date of Patent: March 9, 2010
    Assignee: Metrologic Instruments, Inc.
    Inventors: Constantine J. Tsikos, C. Harry Knowles, Xiaoxun Zhu, Michael D. Schnee, Ka Man Au, Allan Wirth, Timothy A. Good, Andrew Jankevics, Sankar Ghosh, Charles A. Naylor, Thomas Amundsen, Robert Blake, William Svedas, Shawn Defoney, Edward Skypala, Pirooz Vatan, Russell Joseph Dobbs, George Kolis, Mark S. Schmidt, Jeffery Yorsz, Patrick A. Giordano, Stephen J. Colavito, David W. Wilz, Sr., Barry E. Schwartz, Steven Y. Kim, Dale Fisher, Jon Van Tassell
  • Patent number: 7644866
    Abstract: A hand-supportable planar laser illumination and imaging (PLIIM) based code symbol reader includes: a hand-supportable housing having a light transmission aperture; a linear image formation and detection module having a linear image detection array; and a planar laser illumination beam (PLIB) producing device having at least one visible laser diode (VLD) for producing a planar laser illumination beam (PLIB). The code symbol reader further includes an image grabber for grabbing digital linear images formed and detected by the image formation and detection module, an image data buffer for buffering the digital linear images grabbed by the image grabber and constructing a two-dimensional digital image from a series of buffered linear digital images, and an image processing computer for processing the two-dimensional digital image so as to read code symbols graphically represented in the two-dimensional digital image.
    Type: Grant
    Filed: October 11, 2007
    Date of Patent: January 12, 2010
    Assignee: Metrologic Instruments, Inc.
    Inventors: Constantine J. Tsikos, Michael D. Schnee, Xiaoxun Zhu, Thomas Amundsen, Charles A. Naylor, Russell Joseph Dobbs, Carl Harry Knowles
  • Patent number: 7621455
    Abstract: A hand-supportable coplanar laser illumination and imaging (PLIIM) based code symbol reader includes: a hand-supportable housing having light transmission aperture; a linear image formation and detection module having a linear image detection array; and a planar laser illumination beam (PLIB) producing a coplanar laser illumination and imaging based device having at least one visible laser diode (VLD) for producing a planar light illumination beam (PLIB). The code symbol reader further includes an image grabber for grabbing digital linear images formed and detected by the image formation and detection module, an image data buffer for buffering the digital linear images grabbed by the image grabber, and an image processing computer for processing the buffered digital linear images so as to read code symbols graphically represented in the digital linear images.
    Type: Grant
    Filed: October 11, 2007
    Date of Patent: November 24, 2009
    Assignee: Metrologic Instruments, Inc.
    Inventors: Constantine J. Tsikos, Michael D. Schnee, Xiaoxun Zhu, Thomas Amundsen, Charles A. Naylor, Russell Joseph Dobbs, Carl Harry Knowles
  • Patent number: 7600689
    Abstract: Methods of and systems for illuminating objects using planar laser illumination beams having substantially-planar spatial distribution characteristics that extend through the field of view (FOV) of image formation and detection modules employed in such systems. Each planar laser illumination beam is produced from a planar laser illumination beam array (PLIA) comprising an plurality of planar laser illumination modules (PLIMs). Each PLIM comprises a visible laser diode (VLD, a focusing lens, and a cylindrical optical element arranged therewith. The individual planar laser illumination beam components produced from each PLIM are optically combined to produce a composite substantially planar laser illumination beam having substantially uniform power density characteristics over the entire spatial extend thereof and thus the working range of the system.
    Type: Grant
    Filed: June 26, 2007
    Date of Patent: October 13, 2009
    Assignee: Metrologic Instruments, Inc.
    Inventors: Constantine J. Tsikos, Allan Wirth, Timothy A. Good, Andrew Jankevics, Steve Y. Kim, Thomas Amundsen, Charles A. Naylor, Russell Joseph Dobbs, Patrick A. Giordano, Jeffery Yorsz, Mark S. Schmidt, Stephen J. Colavito, David M. Wilz, Sr., Ka Man Au, William Svedas, Sankar Ghosh, Michael D. Schnee, Xiaoxun Zhu, C. Harry Knowles
  • Patent number: 7584893
    Abstract: A tunnel-type digital imaging system for use within retail shopping environments such as supermarkets. The system includes a tunnel configuration arranged about a conveyor structure for transporting objects therethrough, and an image capturing and processing subsystem embodied within the tunnel configuration, for generating a 3D digital imaging volume above the conveyor structure and within the tunnel configuration, for capturing digital 1D images of objects transported through the 3D digital imaging volume. The image capturing and processing subsystem includes a plurality of illumination and imaging stations. Each station includes a 2D imaging array having optics providing a 3D field of view (FOV) on the 2D imaging array that is projected and extends into the 3D digital imaging volume, and one or more light emitting devices configured together to produce an illumination beam that extends into the 3D FOV of the 2D imaging array.
    Type: Grant
    Filed: October 30, 2007
    Date of Patent: September 8, 2009
    Assignee: Metrologic Instruments, Inc.
    Inventors: Constantine J. Tsikos, C. Harry Knowles, Xiaoxun Zhu, Michael D. Schnee, Ka Man Au, Allan Wirth, Timothy A. Good, Andrew Jankevics, Sankar Ghosh, Charles A. Naylor, Thomas Amundsen, Robert Blake, William Svedas, Shawn Defoney, Edward Skypala, Pirooz Vatan, Russell Joseph Dobbs, George Kolis, Mark C. Schmidt, Jeffery Yorsz, Patrick A. Giordano, Stephen J. Colavito, David W. Wilz, Sr., Barry E. Schwartz, Steven Y. Kim, Dale Fisher, Jon Van Tassell
  • Patent number: 7581681
    Abstract: A tunnel-type digital imaging system for use within retail shopping environments such as supermarkets. The system includes a tunnel configuration arranged about a conveyor structure for transporting objects therethrough, and an image capturing and processing subsystem embodied within the tunnel configuration, for generating a 3D digital imaging volume above the conveyor structure and within the tunnel configuration, for capturing digital 1D images of objects transported through the 3D imaging volume. The image capturing and processing subsystem includes a plurality of coplanar illumination and imaging stations.
    Type: Grant
    Filed: October 30, 2007
    Date of Patent: September 1, 2009
    Assignee: Metrologic Instruments, Inc.
    Inventors: Constantine J. Tsikos, C. Harry Knowles, Xiaoxun Zhu, Michael D. Schnee, Ka Man Au, Allan Wirth, Timothy A. Good, Andrew Jankevics, Sankar Ghosh, Charles A. Naylor, Thomas Amundsen, Robert Blake, William Svedas, Shawn Defoney, Edward Skypala, Pirooz Vatan, Russell Joseph Dobbs, George Kolis, Mark C. Schmidt, Jeffery Yorsz, Patrick A. Giordano, Stephen J. Colavito, David W. Wilz, Sr., Barry E. Schwartz, Steven Y. Kim, Dale Fisher, Jon Van Tassell
  • Patent number: 7533821
    Abstract: A hand-supportable linear-type planar laser illumination and imaging (PLIIM) based device comprising a linear image formation and detection (IFD) module having a linear array of image detection elements and also image formation optics having a field of view (FOV) focusing a linear image of an object onto the linear array of image detection elements. A pair of planar laser illumination arrays (PLIAs) is arranged on opposite sides of the linear image formation and detection module, and produces a plurality of spatially-incoherent planar laser illumination beam (PLIB) components that are optically combined with respect to other PLIB components so as to produce a composite planar laser illumination beam (PLIB) that is arranged in a coplanar relationship with at least a portion of the FOV. Each PLIA includes a plurality of planar laser illumination modules (PLIMs). Each PLIM includes a laser diode and beam focusing and diverging optics for producing one spatially-incoherent PLIB component.
    Type: Grant
    Filed: July 11, 2006
    Date of Patent: May 19, 2009
    Assignee: Metrologic Instruments, Inc.
    Inventors: Constantine J. Tsikos, Michael D. Schnee, Xiaoxun Zhu, Thomas Amundsen, Charles A. Naylor, Russell Joseph Dobbs, Carl Harry Knowles
  • Patent number: 7527200
    Abstract: A hand-supportable planar laser illumination and imaging (PLIIM) based device having hand-supportable housing with a light transmission aperture. A linear image formation and detection (IFD) module is mounted within the housing, and has a linear array of image detection elements and also image formation optics with a field of view (FOV). When an object is presented within the FOV, the FOV focuses a linear image of the object onto the linear array. At least one planar laser illumination module (PLIM) is mounted on the support platform, with the linear IFD module, and produces a planar laser illumination beam (PLIB) spatially aligned with respect to the FOV and arranged in a coplanar relationship with at least a portion of the FOV. A laser beam despeckling mechanism is integrated in the device, for reducing speckle-pattern noise observed the linear digital images formed and detected at the linear array of image detection elements.
    Type: Grant
    Filed: June 20, 2006
    Date of Patent: May 5, 2009
    Assignee: Metrologic Instruments, Inc.
    Inventors: Constantine J. Tsikos, C. Harry Knowles, Xiaoxun Zhu, Michael D. Schnee, Ka Man Au, Allan Wirth, Timothy A. Good, Andrew Jankevics, Sankar Ghosh, Charles A. Naylor, Thomas Amundsen, Robert Blake, William Svedas, Shawn Defoney, Edward Skypala, Pirooz Vatan, Russell Joseph Dobbs, George Kolis, Mark C. Schmidt, Jeffery Yorsz, Patrick A. Giordano, Stephen J. Colavito, David W. Wilz, Sr., Barry E. Schwartz, Steven Y. Kim, Dale Fisher, Jon Van Tassell
  • Patent number: 7527202
    Abstract: A hand-supportable planar linear illumination and imaging (PLIIM) based code symbol reading system comprising: a hand-supportable housing having a light transmission aperture; and a planar laser illumination and imaging module (PLIIM), disposed in the hand-supportable housing. The PLIIM includes (i) a linear image detection array having optics providing a field of view (FOV) on said linear image detection array that projects through the light transmission aperture, and (ii) at least one planar laser illumination module (PLIM) for producing a substantially planar laser illumination beam (PLIB) that extends substantially along the same plane as the FOV of the linear image detection array. This arrangement provides a coplanar illumination and imaging plane that projects through the light transmission aperture, for capturing a series of linear (1-D) digital images of an object intersecting therewith during object illumination and imaging operations.
    Type: Grant
    Filed: December 4, 2006
    Date of Patent: May 5, 2009
    Assignee: Metrologic Instruments, Inc.
    Inventors: Constantine J. Tsikos, Michael D. Schnee, Xiaoxun Zhu, Thomas Amundsen, Charles A. Naylor, Russell Joseph Dobbs, Allan Wirth, Andrew Jankevics, Carl Harry Knowles
  • Patent number: 7523863
    Abstract: A hand-supportable planar illumination and imaging (PLIIM) based device having a hand-supportable housing with a light transmission aperture. A linear image formation and detection (IFD) module mounted on the support platform in the housing, and has a linear array of image detection elements and also image formation optics having a field of view (FOV) projectable through the light transmission aperture. When an object is presented in the FOV for illumination and imaging, the FOV focuses a linear image of the object onto the linear array of image detection elements. A plurality of planar illumination modules (PLIMs) are arranged in a rectilinear manner, and produce a planar illumination beam (PLIB) that is spatially aligned with respect to the FOV and arranged in a coplanar relationship with at least a portion of the FOV. Each PLIM includes a visible light emitting diode (LED) and beam forming optics for producing the PLIB.
    Type: Grant
    Filed: July 20, 2006
    Date of Patent: April 28, 2009
    Assignee: Metrologic Instruments, Inc.
    Inventors: Constantine J. Tsikos, Michael D. Schnee, Xiaoxun Zhu, Thomas Amundsen, Charles A. Naylor, Russell Joseph Dobbs, Carl Harry Knowles
  • Publication number: 20080156882
    Abstract: Methods of and systems for illuminating objects using planar laser illumination beams having substantially-planar spatial distribution characteristics that extend through the field of view (FOV) of image formation and detection modules employed in such systems. Each planar laser illumination beam is produced from a planar laser illumination beam array (PLIA) comprising an plurality of planar laser illumination modules (PLIMs). Each PLIM comprises a visible laser diode (VLD, a focusing lens, and a cylindrical optical element arranged therewith. The individual planar laser illumination beam components produced from each PLIM are optically combined to produce a composite substantially planar laser illumination beam having substantially uniform power density characteristics over the entire spatial extend thereof and thus the working range of the system.
    Type: Application
    Filed: June 26, 2007
    Publication date: July 3, 2008
    Applicant: Metrologic Instruments, Inc.
    Inventors: Constantine J. Tsikos, Allan Wirth, Timothy A. Good, Andrew Jankevics, Steve Y. Kim, Thomas Amundsen, Charles A. Naylor, Russell Joseph Dobbs, Patrick A. Giordano, Jeffery Yorsz, Mark S. Schmidt, Stephen J. Colavito, David M. Wilz, Ka Man Au, William Svedas, Sankar Ghosh, Michael D. Schnee, Xiaoxun Zhu, C. Harry Knowles
  • Publication number: 20080135621
    Abstract: A hand-supportable planar laser illumination and imaging (PLIIM) based code symbol reader includes: a hand-supportable housing having light transmission aperture; a linear image formation and detection module having a linear image detection array; and a planar laser illumination beam (PLIB) producing device having at least one visible laser diode (VLD) for producing a planar light illumination beam (PLIB). The code symbol reader further includes image grabber for grabbing digital linear images formed and detected by the image formation and detection module, an image data buffer for buffering the digital linear images grabbed by the image grabber and constructing a two-dimensional image from a series of buffered linear digital images, and an image processing computer for processing the buffered two-dimensional digital image so as to read code symbols graphically represented in the two-dimensional digital linear image.
    Type: Application
    Filed: October 30, 2007
    Publication date: June 12, 2008
    Inventors: Constantine J. Tsikos, C. Harry Knowles, Xiaoxun Zhu, Michael D. Schnee, Ka Man Au, Allan Wirth, Timothy A. Good, Andrew Jankevics, Sankar Ghosh, Charles A. Naylor, Thomas Amundsen, Robert Blake, William Svedas, Shawn Defoney, Edward Skypala, Pirooz Vatan, Russell Joseph Dobbs, George Kolis, Mark C. Schmidt, Jeffery Yorsz, Patrick A. Giordano, Stephen J. Colavito, David W. Wilz, Barry E. Schwartz, Steven Y. Kim, Dale Fisher, Jon Van Tassell
  • Publication number: 20080128506
    Abstract: A hand-supportable planar laser illumination and imaging (PLIIM) based code symbol reader includes: a hand-supportable housing having light transmission aperture; a linear image formation and detection module having a linear image detection array; and a planar laser illumination beam (PLIB) producing device having at least one visible laser diode (VLD) for producing a planar light illumination beam (PLIB). The code symbol reader further includes image grabber for grabbing digital linear images formed and detected by the image formation and detection module, an image data buffer for buffering the digital linear images grabbed by the image grabber and constructing a two-dimensional image from a series of buffered linear digital images, and an image processing computer for processing the buffered two-dimensional digital image so as to read code symbols graphically represented in the two-dimensional digital linear image.
    Type: Application
    Filed: October 30, 2007
    Publication date: June 5, 2008
    Inventors: Constantine J. Tsikos, C. Harry Knowles, Xiaoxun Zhu, Michael D. Schnee, Ka Man Au, Allan Wirth, Timothy A. Good, Andrew Jankevics, Sankar Ghosh, Charles A. Naylor, Thomas Amundsen, Robert Blake, William Svedas, Shawn Defoney, Edward Skypala, Pirooz Vatan, Russell Joseph Dobbs, George Kolis, Mark C. Schmidt, Jeffrey Yorsz, Patrick A. Giordano, Stephen J. Colavito, David W. Wilz, Barry E. Schwartz, Steven Y. Kim, Dale Fisher, Jon Van Tassell
  • Publication number: 20080128507
    Abstract: A tunnel-type digital imaging system for use within retail shopping environments such as supermarkets. The system includes a tunnel configuration arranged about a conveyor structure for transporting objects therethrough, and an image capturing and processing subsystem embodied within the tunnel configuration, for generating a 3D digital imaging volume above the conveyor structure and within the tunnel configuration, for capturing digital images of objects transported through the 3D imaging volume. The image capturing and processing subsystem includes a plurality of illumination and imaging stations. Each station includes a 2D imaging array having optics providing a 3D field of view (FOV) on the 2D imaging array that is projected and extends into the 3D imaging volume, and one or more light emitting devices configured together to produce a illumination beam that extends into the 3D FOV of the 2D imaging array.
    Type: Application
    Filed: October 30, 2007
    Publication date: June 5, 2008
    Inventors: Constantine J. Tsikos, C. Harry Knowles, Xiaoxun Zhu, Micheal D. Schnee, Ka Man Au, Allan Wirth, Timothy A. Good, Andrew Jankevics, Sankar Ghosh, Charles A. Naylor, Thomas Amundsen, Robert Blake, William Svedas, Shawn Defoney, Edward Skypala, Pirooz Vatan, Russell Joseph Dobbs, George Kolis, Mark C. Schmidt, Jeffrey Yorsz, Patrick A. Giordano, Stephen J. Colavito, David W. Wilz, Barry E. Schwartz, Steven Y. Kim, Dale Fisher, Jon Van Tassell
  • Publication number: 20080128508
    Abstract: A tunnel-type digital imaging system for use within retail shopping environments such as supermarkets. The system includes a tunnel configuration arranged about a conveyor structure for transporting objects therethrough, and an image capturing and processing subsystem embodied within the tunnel configuration, for generating a 3D digital imaging volume above the conveyor structure and within the tunnel configuration, for capturing digital images of objects transported through the 3D imaging volume. The image capturing and processing subsystem includes a plurality of coplanar illumination and imaging stations.
    Type: Application
    Filed: October 30, 2007
    Publication date: June 5, 2008
    Inventors: Constantine J. Tsikos, C. Harry Knowles, Xiaoxun Zhu, Michael D. Schnee, Ka Man Au, Allan Wirth, Timothy A. Good, Andrew Jankevics, Sankar Ghosh, Charles A. Naylor, Thomas Amundsen, Robert Blake, William Svedas, Shawn Defoney, Edward Skypala, Pirooz Vatan, Russell Joseph Dobbs, George Kolis, Mark C. Schmidt, Jeffery Yorsz, Patrick A. Giordano, Stephen J. Colavito, David W. Wilz, Barry E. Schwartz, Steven Y. Kim, Dale Fisher, Jon Van Tassell
  • Publication number: 20080116279
    Abstract: A hand-supportable planar laser illumination and imaging (PLIIM) based code symbol reader includES: a hand-supportable housing having light transmission aperture; a linear image formation and detection module having a linear image detection array; and a planar laser illumination beam (PLIB) producing device having at least one visible laser diode (VLD) for producing a planar light illumination beam (PLIB). The code symbol reader further includes image grabber for grabbing digital linear images formed and detected by the image formation and detection module, an image data buffer for buffering the digital linear images grabbed by the image grabber and constructing a two-dimensional image from a series of buffered linear digital images, and an image processing computer for processing the buffered two-dimensional digital image so as to read code symbols graphically represented in the two-dimensional digital linear image.
    Type: Application
    Filed: October 11, 2007
    Publication date: May 22, 2008
    Applicant: Metrologic Instruments,Inc.
    Inventors: Constantine J. Tsikos, Michael D. Schnee, Xiaoxun Zhu, Thomas Amundsen, Charles A. Naylor, Russell Joseph Dobbs, Carl Harry Knowles
  • Patent number: 7143943
    Abstract: Methods of and systems for illuminating objects using planar laser illumination beams (PLIBs) having substantially-planar spatial distribution characteristics that extend throughout the field of view (FOV) of image formation and detection modules employed in such systems. Each PLIB is produced from a planar laser illumination beam array (PLIA) comprising a plurality of planar laser illumination modules (PLIMs). Each PLIM comprises a visible laser diode (VLD), a focusing lens, and a cylindrical optical element arranged with each PLIM, which is adjustable relative to other PLIMs so as to permit precise positioning of each PLIM relative to the optical axis of the imaging optics of the image formation and detection module. The individual PLIB components produced from each PLIM are optically combined to produce a composite substantially planar laser illumination beam having substantially uniform power density characteristics over the entire spatial extend thereof and thus the working range of the system.
    Type: Grant
    Filed: August 12, 2003
    Date of Patent: December 5, 2006
    Assignee: Metrologic Instruments, Inc.
    Inventors: Constantine J. Tsikos, Michael D. Schnee, Xiaoxun Zhu, Thomas Amundsen, Charles A. Naylor, Russell Joseph Dobbs, Allan Wirth, Andrew Jankevics, Carl Harry Knowles
  • Patent number: 7131586
    Abstract: Methods of and systems for illuminating objects using planar laser illumination beams having substantially-planar spatial distribution characteristics that extend through the field of view (FOV) of image formation and detection modules employed in such systems. Each planar laser illumination beam is produced from a planar laser illumination beam array (PLIA) comprising an plurality of planar laser illumination modules (PLIMs). Each PLIM comprises a visible laser diode (VLD, a focusing lens, and a cylindrical optical element arranged therewith. The individual planar laser illumination beam components produced from each PLIM are optically combined to produce a composite substantially planar laser illumination beam having substantially uniform power density characteristics over the entire spatial extend thereof and thus the working range of the system.
    Type: Grant
    Filed: December 8, 2003
    Date of Patent: November 7, 2006
    Assignee: Metrologic Instruments, Inc.
    Inventors: Constantine J. Tsikos, Michael D. Schnee, Xiaoxun Zhu, Thomas Amundsen, Charles A. Naylor, Russell Joseph Dobbs, Allan Wirth, Andrew Jankevics, Carl Harry Knowles
  • Patent number: 7073718
    Abstract: Methods of and systems for illuminating objects using planar laser illumination beams having substantially-planar spatial distribution characteristics that extend through the field of view (FOV) of image formation and detection modules employed in such systems. Each planar laser illumination beam is produced from a planar laser illumination beam array (PLIA) comprising an plurality of planar laser illumination modules (PLIMs). Each PLIM comprises a visible laser diode (VLD, a focusing lens, and a cylindrical optical element arranged therewith. The individual planar laser illumination beam components produced from each PLIM are optically combined to produce a composite substantially planar laser illumination beam having substantially uniform power density characteristics over the entire spatial extend thereof and thus the working range of the system.
    Type: Grant
    Filed: February 1, 2002
    Date of Patent: July 11, 2006
    Assignee: Metrologic Instruments, Inc.
    Inventors: Constantine J. Tsikos, Michael D. Schnee, Xiaoxun Zhu, Thomas Amundsen, Charles A. Naylor, Russell Joseph Dobbs, Carl Harry Knowles