公开(公告)号：US07143943B2

公开(公告)日：2006-12-05

申请号：US10639362

申请日：2003-08-12

申请人： Constantine J. Tsikos ,  Michael D. Schnee ,  Xiaoxun Zhu ,  Thomas Amundsen ,  Charles A. Naylor ,  Russell Joseph Dobbs ,  Allan Wirth ,  Andrew Jankevics ,  Carl Harry Knowles

发明人： Constantine J. Tsikos ,  Michael D. Schnee ,  Xiaoxun Zhu ,  Thomas Amundsen ,  Charles A. Naylor ,  Russell Joseph Dobbs ,  Allan Wirth ,  Andrew Jankevics ,  Carl Harry Knowles

IPC分类号： G06K7/10

CPC分类号： B82Y15/00 ,  G02B26/10 ,  G02B27/48 ,  G06K7/10722 ,  G06K7/10732 ,  G06K7/10811 ,  H01S5/02248 ,  H01S5/4025

摘要： 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.

摘要翻译： 使用平面激光照明光束（PLIB）照明物体的方法和系统，该平面激光照明光束（PLIB）具​​有延伸到在这种系统中使用的图像形成和检测模块的视场（FOV）中的基本上平面的空间分布特性。 每个PLIB由包括多个平面激光照明模块（PLIM）的平面激光照射束阵列（PLIA）产生。 每个PLIM包括可见激光二极管（VLD），聚焦透镜和布置有每个PLIM的圆柱形光学元件，每个PLIM可相对于其它PLIM调节，以便允许每个PLIM相对于成像光学器件的光轴精确定位 的图像形成和检测模块。 从每个PLIM产生的各个PLIB组件被光学组合以产生在其整个空间延伸上具有基本均匀的功率密度特性的复合的基本上平面的激光照明光束，并因此产生系统的工作范围。

公开(公告)号：US07131586B2

公开(公告)日：2006-11-07

申请号：US10730481

申请日：2003-12-08

申请人： Constantine J. Tsikos ,  Michael D. Schnee ,  Xiaoxun Zhu ,  Thomas Amundsen ,  Charles A. Naylor ,  Russell Joseph Dobbs ,  Allan Wirth ,  Andrew Jankevics ,  Carl Harry Knowles

发明人： Constantine J. Tsikos ,  Michael D. Schnee ,  Xiaoxun Zhu ,  Thomas Amundsen ,  Charles A. Naylor ,  Russell Joseph Dobbs ,  Allan Wirth ,  Andrew Jankevics ,  Carl Harry Knowles

IPC分类号： G06K7/14

CPC分类号： B82Y15/00 ,  G02B26/10 ,  G02B27/48 ,  G06K7/10722 ,  G06K7/10732 ,  G06K7/10811 ,  H01S5/02248 ,  H01S5/4025

摘要： 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. Preferably, each planar laser illumination beam component is focused so that the minimum beam width thereof occurs at a point or plane which is the farthest or maximum object distance at which the system is designed to acquire images, thereby compensating for decreases in the power density of the incident planar laser illumination beam due to the fact that the width of the planar laser illumination beam increases in length for increasing object distances away from the imaging optics. By virtue of the present invention, it is now possible to use both VLDs and high-speed CCD-type image detectors in conveyor, hand-held and hold-under type scanning applications alike, enjoying the advantages and benefits that each such technology has to offer, while avoiding the shortcomings and drawbacks hitherto associated therewith.

摘要翻译： 使用具有基本上平面的空间分布特性的平面激光照明光束照射物体的方法和系统，其延伸通过图像形成的视野（FOV）和在这种系统中使用的检测模块。 每个平面激光照明光束由包括多个平面激光照射模块（PLIM）的平面激光照射束阵列（PLIA）产生。 每个PLIM包括可见激光二极管（VLD，聚焦透镜和与其配置的圆柱形光学元件），由每个PLIM产生的各个平面激光照明光束分量被光学组合以产生具有基本上均匀功率密度的复合基本上平面的激光照明光束 优选地，每个平面激光照射光束分量被聚焦，使得其最小光束宽度发生在最远或最大物体距离的点或平面处，在该点或平面处， 系统被设计为获取图像，从而补偿入射的平面激光照明光束的功率密度的降低，这是由于平面激光照射光束的宽度在长度上增加以增加远离成像光学元件的物体距离 的本发明，现在可以使用两种VLD和高 在传送带，手持式和保持型扫描应用中，速度CCD型图像检测器同样享有每种这样的技术所提供的优点和好处，同时避免迄今为止的缺点和缺点。

公开(公告)号：US06830189B2

公开(公告)日：2004-12-14

申请号：US09883130

申请日：2001-06-15

申请人： Constantine J. Tsikos ,  Allan Wirth ,  Andrew Jankevics ,  Steve Y. Kim ,  Timothy Good ,  Thomas Amundsen ,  Charles A. Naylor ,  Russell Joseph Dobbs ,  Xiaoxun Zhu ,  Michael D. Schnee ,  Carl Harry Knowles

发明人： Constantine J. Tsikos ,  Allan Wirth ,  Andrew Jankevics ,  Steve Y. Kim ,  Timothy Good ,  Thomas Amundsen ,  Charles A. Naylor ,  Russell Joseph Dobbs ,  Xiaoxun Zhu ,  Michael D. Schnee ,  Carl Harry Knowles

IPC分类号： G06K710

CPC分类号： B82Y15/00 ,  G02B26/106 ,  G02B27/48 ,  G06K7/10 ,  G06K7/10564 ,  G06K7/10584 ,  G06K7/10594 ,  G06K7/10603 ,  G06K7/10663 ,  G06K7/10673 ,  G06K7/10693 ,  G06K7/10702 ,  G06K7/10722 ,  G06K7/10732 ,  G06K7/10792 ,  G06K7/10801 ,  G06K7/10811 ,  G06K7/10851 ,  G06K7/10861 ,  G06K7/10871 ,  G06K7/10881 ,  G06K7/10891 ,  G06K7/109 ,  G06K7/14 ,  G06K17/0022 ,  G06K2207/1012 ,  G06K2207/1013 ,  G07G1/0054 ,  H01L21/28575 ,  H01L29/452 ,  H01S5/02248

摘要： 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. Preferably, each planar laser illumination beam component is focused so that the minimum beam width thereof occurs at a point or plane which is the farthest or maximum object distance at which the system is designed to acquire images, thereby compensating for decreases in the power density of the incident planar laser illumination beam due to the fact that the width of the planar laser illumination beam increases in length for increasing object distances away from the imaging optics. Advanced high-resolution wavefront control methods and devices are disclosed for use with the PLIIM-based systems in order to reduce the power of speckle-noise patterns observed at the image detections thereof. By virtue of the present invention, it is now possible to use both VLDs and high-speed CCD-type image detectors in conveyor, hand-held and hold-under type imaging applications alike, enjoying the advantages and benefits that each such technology has to offer, while avoiding the shortcomings and drawbacks hitherto associated therewith.

公开(公告)号：US06629641B2

公开(公告)日：2003-10-07

申请号：US09780027

申请日：2001-02-09

申请人： Constantine J. Tsikos ,  Michael D. Schnee ,  Xiaoxun Zhu ,  Thomas Amundsen ,  Charles A. Naylor ,  Russell Joseph Dobbs ,  Allan Wirth ,  Andrew Jankevics ,  Carl Harry Knowles

发明人： Constantine J. Tsikos ,  Michael D. Schnee ,  Xiaoxun Zhu ,  Thomas Amundsen ,  Charles A. Naylor ,  Russell Joseph Dobbs ,  Allan Wirth ,  Andrew Jankevics ,  Carl Harry Knowles

IPC分类号： G06K710

CPC分类号： B82Y15/00 ,  G02B26/10 ,  G02B27/48 ,  G06K7/10722 ,  G06K7/10732 ,  G06K7/10811 ,  H01S5/02248 ,  H01S5/4025

摘要： 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. Preferably, each planar laser illumination beam component is focused so that the minimum beam width thereof occurs at a point or plane which is the farthest or maximum object distance at which the system is designed to acquire images, thereby compensating for decreases in the power density of the incident planar laser illumination beam due to the fact that the width of the planar laser illumination beam increases in length for increasing object distances away from the imaging optics. By virtue of the present invention, it is now possible to use both VLDs and high-speed CCD-type image detectors in conveyor, hand-held and hold-under type scanning applications alike, enjoying the advantages and benefits that each such technology has to offer, while avoiding the shortcomings and drawbacks hitherto associated therewith.

公开(公告)号：US07527202B2

公开(公告)日：2009-05-05

申请号：US11633666

申请日：2006-12-04

申请人： Constantine J. Tsikos ,  Michael D. Schnee ,  Xiaoxun Zhu ,  Thomas Amundsen ,  Charles A. Naylor ,  Russell Joseph Dobbs ,  Allan Wirth ,  Andrew Jankevics ,  Carl Harry Knowles

发明人： Constantine J. Tsikos ,  Michael D. Schnee ,  Xiaoxun Zhu ,  Thomas Amundsen ,  Charles A. Naylor ,  Russell Joseph Dobbs ,  Allan Wirth ,  Andrew Jankevics ,  Carl Harry Knowles

IPC分类号： G06K7/10

CPC分类号： B82Y15/00 ,  G02B26/10 ,  G02B27/48 ,  G06K7/10722 ,  G06K7/10732 ,  G06K7/10811 ,  H01S5/02248 ,  H01S5/4025

摘要： 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. An image frame grabber then accesses 1-D digital images therefrom and composes a 2-D digital image of the object. An image data buffer buffers 2-D images received from the image frame grabber, and a decode image processor processes the digital images stored within the image data buffer so as to read one or more code symbols graphically represented in the digital images. A system controller controls the operations within the system.

摘要翻译： 一种手持式平面线性照明和成像（PLIIM）代码符号读取系统，包括：具有光传输孔径的手持式外壳; 以及设置在手持式外壳中的平面激光照明和成像模块（PLIIM）。 PLIIM包括（i）线性图像检测阵列，其具有在所述线性图像检测阵列上提供通过光传输孔突出的视场（FOV）的光学元件，以及（ii）至少一个平面激光照射模块（PLIM），用于 产生基本上沿着与线性图像检测阵列的FOV相同的平面延伸的基本上平面的激光照明光束（PLIB）。 这种布置提供了共面的照明和成像平面，其投射通过光传输孔径，用于在物体照明和成像操作期间捕获与其相交的物体的一系列线性（1-D）数字图像。 然后，图像帧抓取器从其中访问1-D数字图像，并且构成该对象的2-D数字图像。 图像数据缓冲器缓冲从图像帧获取器接收的2-D图像，并且解码图像处理器处理存储在图像数据缓冲器内的数字图像，以便读取在数字图像中图形表示的一个或多个代码符号。 系统控制器控制系统内的操作。

公开(公告)号：US06991166B2

公开(公告)日：2006-01-31

申请号：US10187473

申请日：2002-06-28

申请人： Constantine J. Tsikos ,  C. Harry Knowles ,  Xiaoxun Zhu ,  Michael D. Schnee ,  Timothy A. Good ,  Thomas Amundsen ,  Mark C. Schmidt ,  Patrick A. Giordano

发明人： Constantine J. Tsikos ,  C. Harry Knowles ,  Xiaoxun Zhu ,  Michael D. Schnee ,  Timothy A. Good ,  Thomas Amundsen ,  Mark C. Schmidt ,  Patrick A. Giordano

IPC分类号： G06K7/10

CPC分类号： G06K7/10 ,  G02B19/0014 ,  G02B19/0052 ,  G02B19/0085 ,  G02B19/009 ,  G02B19/0095 ,  G02B26/10 ,  G02B27/095 ,  G02B27/48 ,  G06K7/10594 ,  G06K7/10732 ,  G06K7/146 ,  G06K9/26 ,  G06K9/325 ,  H01S5/005 ,  H01S5/02248 ,  H01S5/4025

摘要： A LED-based planar light illumination and imaging (PLIIM) engine for use in a hand-supportable linear imager adapted for manual movement relative to an object to be illuminated and imaged. The LED-based PLIIM engine comprises an engine housing having a light transmission aperture, and a linear image formation and detection (IFD) module having a linear image detection array with image detection elements and image formation optics having a field of view (FOV) projected through the light transmission aperture into an illumination and imaging field, in which an object is presented for illumination and imaging. A pair of planar light illumination arrays (PLIAs) are arranged on opposite sides of the linear IFD module. Each PLIA includes a plurality of planar light illumination modules (PLIMs) for producing a plurality of spatially-incoherent planar light illumination beam (PLIB) components which are spatially aligned to produce a planar light illumination beam (PLIB) arranged in a coplanar relationship with a portion of the FOV. Each PLIM includes a light emitting diode (LED) and beam focusing and diverging optics for producing one PLIB component. An image frame grabber is provided for grabbing images formed and detected by the linear IFD module. An image data buffer is provided for buffering the grabbed linear images. A controller is provided for controlling the linear IFD module, and the pair of planar light illumination arrays. As the engine housing moves past the object, a series of linear images of the object are sequentially detected by the linear IFD module, grabbed by the image frame grabber, and buffered in the image data buffer for subsequent processing by an image processing computer, so to decode a 1-D or 2-D bar code symbol structure represented within the structure of said two-dimensional image, or recognize character strings or other forms of graphical intelligence represented therewithin.

公开(公告)号：US06953151B2

公开(公告)日：2005-10-11

申请号：US10135866

申请日：2002-04-29

申请人： Constantine J. Tsikos ,  C. Harry Knowles ,  Xiaoxun Zhu ,  Michael D. Schnee ,  Ka Man Au ,  Allan Wirth ,  Sankar Ghosh

发明人： Constantine J. Tsikos ,  C. Harry Knowles ,  Xiaoxun Zhu ,  Michael D. Schnee ,  Ka Man Au ,  Allan Wirth ,  Sankar Ghosh

IPC分类号： G02B6/42 ,  G02B27/48 ,  G06C11/08 ,  G06F17/00 ,  G06K7/10 ,  G06K7/14 ,  G06K9/22 ,  G07B15/06 ,  H01S3/00 ,  H01S3/08 ,  H01S5/00 ,  H01S5/022 ,  H01S5/40

CPC分类号： G06K7/10 ,  G02B19/0014 ,  G02B19/0052 ,  G02B19/0085 ,  G02B19/009 ,  G02B19/0095 ,  G02B26/10 ,  G02B27/095 ,  G02B27/48 ,  G06K7/10594 ,  G06K7/10732 ,  G06K7/146 ,  G06K9/26 ,  G06K9/325 ,  H01S5/005 ,  H01S5/02248 ,  H01S5/4025

摘要： 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. Preferably, each planar laser illumination beam component is focused so that the minimum beam width thereof occurs at a point or plane which is the farthest or maximum object distance at which the system is designed to acquire images, thereby compensating for decreases in the power density of the incident planar laser illumination beam due to the fact that the width of the planar laser illumination beam increases in length for increasing object distances away from the imaging optics. By virtue of the present invention, it is now possible to use both VLDs and high-speed CCD-type image detectors in conveyor, hand-held and hold-under type scanning applications alike, enjoying the advantages and benefits that each such technology has to offer, while avoiding the shortcomings and drawbacks hitherto associated therewith.

摘要翻译： 使用具有基本上平面的空间分布特性的平面激光照明光束照射物体的方法和系统，其延伸通过图像形成的视野（FOV）和在这种系统中使用的检测模块。 每个平面激光照明光束由包括多个平面激光照射模块（PLIM）的平面激光照射束阵列（PLIA）产生。 每个PLIM包括可见激光二极管（VLD，聚焦透镜和与其配置的圆柱形光学元件），由每个PLIM产生的各个平面激光照明光束分量被光学组合以产生具有基本上均匀功率密度的复合基本上平面的激光照明光束 优选地，每个平面激光照射光束分量被聚焦，使得其最小光束宽度发生在最远或最大物体距离的点或平面处，在该点或平面处， 系统被设计为获取图像，从而补偿入射的平面激光照明光束的功率密度的降低，这是由于平面激光照射光束的宽度在长度上增加以增加远离成像光学元件的物体距离 的本发明，现在可以使用两种VLD和高 在传送带，手持式和保持型扫描应用中，速度CCD型图像检测器同样享有每种这样的技术所提供的优点和好处，同时避免迄今为止的缺点和缺点。

公开(公告)号：US06988661B2

公开(公告)日：2006-01-24

申请号：US10150491

申请日：2002-05-16

申请人： Constantine J. Tsikos ,  C. Harry Knowles ,  Xiaoxun Zhu ,  Michael D. Schnee ,  Charles A. Naylor ,  Thomas Amundsen ,  Russell Joseph Dobbs

发明人： Constantine J. Tsikos ,  C. Harry Knowles ,  Xiaoxun Zhu ,  Michael D. Schnee ,  Charles A. Naylor ,  Thomas Amundsen ,  Russell Joseph Dobbs

IPC分类号： G06K7/10

CPC分类号： G06K7/10 ,  G02B19/0014 ,  G02B19/0052 ,  G02B19/0085 ,  G02B19/009 ,  G02B19/0095 ,  G02B26/10 ,  G02B27/095 ,  G02B27/48 ,  G06K7/10594 ,  G06K7/10732 ,  G06K7/146 ,  G06K9/26 ,  G06K9/325 ,  H01S5/005 ,  H01S5/02248 ,  H01S5/4025

摘要： An automated object identification and attribute acquisition system comprising a planar light illumination and imaging subsystem (PLIIM) based linear imaging subsystem, and a laser-based object profiling subsystem integrated within a multi-compartment system housing. The system housing has a substantially unitary construction and includes a first optically-isolated compartment formed in its upper deck portion for containing the PLIIM based linear imaging subsystem and associated components therewithin. The system housing also includes a second optically-isolated compartment formed in its lower deck portion, disposed below the first optically-isolated compartment; for containing the laser-based object profiling subsystem and associated components therewithin. First and second light transmission apertures are formed in the first optically-isolated compartment, for enabling the transmission of a planar laser illumination beam (PLIB) from the PLIIM based linear imaging sybsystem, and towards the object to be illuminated. A third light transmission aperture is formed in the first optically-isolated compartment, and spatially aligned with the first and second light transmission apertures, for enabling the field of view (FOV) of a linear image detection array provided in the PLIIM-based linear imaging subsystem, to project from the linear image detection array towards the illuminated object to be imaged. A fourth light transmission aperture is formed in the second optically-isolated compartment, and spatially distanced from the first optically-isolated compartment, for enabling the transmission of one or more laser scanning beams from the laser-based object profiling subsystem, towards the object being illuminated and imaged. By virtue of the present invention, it is now possible to automatically identify a moving object such as a package moving along a conveyor belt structure, and acquire geometrical and surface attributes thereof, using a single integrated device of substantially unitary construction, thereby simplifying system installation, set-up and maintenance in diverse field of operation

公开(公告)号：US06913202B2

公开(公告)日：2005-07-05

申请号：US10187425

申请日：2002-06-28

申请人： Constantine J. Tsikos ,  C. Harry Knowles ,  Xiaoxun Zhu ,  Michael D. Schnee ,  Thomas Amundsen ,  Mark C. Schmidt ,  Patrick A. Giordano

发明人： Constantine J. Tsikos ,  C. Harry Knowles ,  Xiaoxun Zhu ,  Michael D. Schnee ,  Thomas Amundsen ,  Mark C. Schmidt ,  Patrick A. Giordano

IPC分类号： G02B6/42 ,  G02B27/48 ,  G06C11/08 ,  G06F17/00 ,  G06K7/10 ,  G06K7/14 ,  G06K9/22 ,  G07B15/06 ,  H01S3/00 ,  H01S3/08 ,  H01S5/00 ,  H01S5/022 ,  H01S5/40

CPC分类号： G06K7/10 ,  G02B19/0014 ,  G02B19/0052 ,  G02B19/0085 ,  G02B19/009 ,  G02B19/0095 ,  G02B26/10 ,  G02B27/095 ,  G02B27/48 ,  G06K7/10594 ,  G06K7/10732 ,  G06K7/146 ,  G06K9/26 ,  G06K9/325 ,  H01S5/005 ,  H01S5/02248 ,  H01S5/4025

摘要： 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. Preferably, each planar laser illumination beam component is focused so that the minimum beam width thereof occurs at a point or plane which is the farthest or maximum object distance at which the system is designed to acquire images, thereby compensating for decreases in the power density of the incident planar laser illumination beam due to the fact that the width of the planar laser illumination beam increases in length for increasing object distances away from the imaging optics. By virtue of the present invention, it is now possible to use both VLDs and high-speed CCD-type image detectors in conveyor, hand-held and hold-under type scanning applications alike, enjoying the advantages and benefits that each such technology has to offer, while avoiding the shortcomings and drawbacks hitherto associated therewith.

摘要翻译： 使用具有基本上平面的空间分布特性的平面激光照明光束照射物体的方法和系统，其延伸通过图像形成的视野（FOV）和在这种系统中使用的检测模块。 每个平面激光照明光束由包括多个平面激光照射模块（PLIM）的平面激光照射束阵列（PLIA）产生。 每个PLIM包括可见激光二极管（VLD，聚焦透镜和与其配置的圆柱形光学元件），由每个PLIM产生的各个平面激光照明光束分量被光学组合以产生具有基本上均匀功率密度的复合基本上平面的激光照明光束 优选地，每个平面激光照射光束分量被聚焦，使得其最小光束宽度发生在最远或最大物体距离的点或平面处，在该点或平面处， 系统被设计为获取图像，从而补偿入射的平面激光照明光束的功率密度的降低，这是由于平面激光照射光束的宽度在长度上增加以增加远离成像光学元件的物体距离 的本发明，现在可以使用两种VLD和高 在传送带，手持式和保持型扫描应用中，速度CCD型图像检测器同样享有每种这样的技术所提供的优点和好处，同时避免迄今为止的缺点和缺点。

公开(公告)号：US07028899B2

公开(公告)日：2006-04-18

申请号：US09990585

申请日：2001-11-21

申请人： Constantine J. Tsikos ,  C. Harry Knowles ,  Xiaoxun Zhu ,  Michael D. Schnee ,  Ka Man Au ,  Sankar Ghosh

发明人： Constantine J. Tsikos ,  C. Harry Knowles ,  Xiaoxun Zhu ,  Michael D. Schnee ,  Ka Man Au ,  Sankar Ghosh

IPC分类号： G06K7/10

CPC分类号： G06K7/10 ,  G02B19/0014 ,  G02B19/0052 ,  G02B19/0085 ,  G02B19/009 ,  G02B19/0095 ,  G02B26/10 ,  G02B27/095 ,  G02B27/48 ,  G06K7/10594 ,  G06K7/10732 ,  G06K7/146 ,  G06K9/26 ,  G06K9/325 ,  H01S5/005 ,  H01S5/02248 ,  H01S5/4025

摘要： A planar laser illumination and imaging (PLLIM) based camera system capable of producing digital images with reduced levels of speckle-pattern noise. The PLIIM based camera system comprises a planar laser illumination array (PLIA) including a plurality of laser diodes for producing and projecting a planar laser illumination beam (PLIB), so as to illuminate an object as it is moving past said PLIIM based camera system. An image formation and detection (IFD) module is provided having a image detection array and imaging forming optics for providing the image detection array with a field of view (FOV). The PLIB and FOV are arranged in a coplanar relationship along the working range of the PLIIM based camera system so that the PLIB illuminates primarily within the FOV of the IFD module. A speckle-pattern noise reduction subsystem is integrated with the PLIA, for reducing the temporal-coherence of said planar laser illumination beam (PLIB) before the PLIB illuminates a target object. The speckle-pattern noise reduction subsystem carries out a temporal phase modulation technique during the transmission of the PLIB towards the target, so that the object is illuminate with a temporally coherent-reduced planar laser illumination beam (PLIB) and numerous substantially different time-varying speckle-noise patterns are produced at the image detection array over the photo-integration time period thereof. The numerous substantially different time-varying speckle-noise patterns are detected at the image detection array over the photo-integration time period, and the detected speckle-noise patterns are temporally averaged at said image detection array during the photo-integration time period thereof. As a result of such temporal averaging, the RMS power of observable speckle-noise patterns is reduced at the image detection array. By virtue of the present invention, it is now possible to enjoy the benefits of using laser-based illumination during high-speed imaging operations, without the adverse effects associated with speckle-pattern noise.