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31. 发明授权

US07104454B2 Automated system and method for identifying and measuring packages transported through an omnidirectional laser scanning tunnel 失效
标题翻译：用于识别和测量通过全向激光扫描隧道传输的包装的自动化系统和方法
公开(公告)号：US07104454B2
公开(公告)日：2006-09-12
申请号：US10438797
申请日：2003-05-15
申请人： Timothy A. Good , Andrew D. Dehennis , Xiaoxun Zhu , David M. Wilz, Sr. , George B. Rockstein , Stephen J. Colavito , Robert E. Blake , Ka Man Au , George Kolis , C. Harry Knowles
发明人： Timothy A. Good , Andrew D. Dehennis , Xiaoxun Zhu , David M. Wilz, Sr. , George B. Rockstein , Stephen J. Colavito , Robert E. Blake , Ka Man Au , George Kolis , C. Harry Knowles
IPC分类号： B06K7/10
CPC分类号： G06K7/10861 , G02B26/106 , G06K7/10 , G06K7/10564 , G06K7/10584 , G06K7/10594 , G06K7/10603 , G06K7/10663 , G06K7/10673 , G06K7/10693 , G06K7/10702 , G06K7/10792 , G06K7/10801 , G06K7/10811 , G06K7/10851 , G06K7/10871 , G06K7/10881 , G06K7/10891 , G06K7/109 , G06K7/14 , G06K17/0022 , G06K2207/1013 , G07F11/002 , G07G1/0054
摘要： A fully automated package identification and measuring system, in which an omni-directional holographic scanning tunnel is used to read bar codes on packages entering the tunnel, while a package dimensioning subsystem is used to capture information about the package prior to entry into the tunnel. Mathamatical models are created on a real-time basis for the geometry of the package and the position of the laser scanning beam used to read the bar code symbol thereon. The mathamatical models are analyzed to determine if collected and queued package identification data is spatially and/or temporally correlated with package measurement data using vector-based ray-tracing methods, homogeneous transformations, and object-oriented decision logic so as to enable simultaneous tracking of multiple packages being transported through the scanning tunnel.
摘要翻译：全自动包装识别和测量系统，其中使用全向全息扫描隧道来读取进入隧道的包装上的条形码，同时使用包装尺寸子系统在进入隧道之前捕获关于包装的信息。实时地为包装的几何形状和用于读取其上的条形码符号的激光扫描光束的位置创建数学模型。分析数学模型，以确定收集的和排队的包裹识别数据是否与包装测量数据在空间上和/或时间上相关，使用基于矢量的光线跟踪方法，均匀变换和面向对象的决策逻辑，以便能够同时跟踪多个包裹通过扫描隧道传送。

32. 发明授权

US06616048B2 Automated system and method for identifying and measuring packages transported through an omnidirectional laser scanning tunnel 失效
标题翻译：用于识别和测量通过全向激光扫描隧道传输的包装的自动化系统和方法
公开(公告)号：US06616048B2
公开(公告)日：2003-09-09
申请号：US10076912
申请日：2002-02-14
申请人： Timothy A. Good , Andrew D. Dehennis , Xiaoxun Zhu , David M. Wilz, Sr. , George B. Rockstein , Stephen J. Colavito , Robert E. Blake , Ka Man Au , George Kolis , C. Harry Knowles
发明人： Timothy A. Good , Andrew D. Dehennis , Xiaoxun Zhu , David M. Wilz, Sr. , George B. Rockstein , Stephen J. Colavito , Robert E. Blake , Ka Man Au , George Kolis , C. Harry Knowles
IPC分类号： G06K710
CPC分类号： G06K7/10861 , G02B26/106 , G06K7/10 , G06K7/10564 , G06K7/10584 , G06K7/10594 , G06K7/10603 , G06K7/10663 , G06K7/10673 , G06K7/10693 , G06K7/10702 , G06K7/10792 , G06K7/10801 , G06K7/10811 , G06K7/10851 , G06K7/10871 , G06K7/10881 , G06K7/10891 , G06K7/109 , G06K7/14 , G06K17/0022 , G06K2207/1013 , G07F11/002 , G07G1/0054
摘要： A fully automated package identification and measuring system in which an omni-directional holographic scanning tunnel is used to read bar codes on packages entering the tunnel, while a package dimensioning subsystem is used to capture information about the package prior to entry into the tunnel. Mathematical models are created on a real-time basis for the geometry of the package and the position of the laser scanning beam used to read the bar code symbol hereon. The mathematical models area analyzed to determine if collected and queued package identification data is spatially and/or temporally correlated with package measurement data using vector-based ray-tracing methods, homogenous transformations, and object-oriented decision logic so as to enable simultaneous tracking of multiple packages being transported through the scanning tunnel.
摘要翻译：全自动包装识别和测量系统，其中使用全向全息扫描隧道来读取进入隧道的包装上的条形码，同时使用包装尺寸子系统在进入隧道之前捕获有关包装的信息。数学模型是为了封装的几何形状和用于读取条形码符号的激光扫描光束的位置而实时创建的。分析数学模型区域，以确定是否收集和排队的包装识别数据与包装测量数据在空间和/或时间上相关，使用基于矢量的光线跟踪方法，均匀变换和面向对象的决策逻辑，以便能够同时跟踪多个包裹通过扫描隧道传送。

33. 发明授权

US06971575B2 HAND-SUPPORTABLE PLANAR LASER ILLUMINATION AND IMAGING (PLIIM) DEVICE EMPLOYING A PAIR OF LINEAR LASER DIODE ARRAYS MOUNTED ABOUT AN AREA IMAGE DETECTION ARRAY, FOR ILLUMINATING AN OBJECT TO BE IMAGED WITH A PLURALITY OF OPTICALLY-COMBINED SPATIALLY-INCOHERENT PLANAR LASER ILLUMINATION BEAMS (PLIBS) SCANNED THROUGH THE FIELD OF VIEW (FOV) OF SAID AREA IMAGE DETECTION ARRAY, AND REDUCING THE SPECKLE-PATTERN NOISE POWER IN DETECTED 2-D IMAGES BY TEMPORALLY-AVERAGING DETECTED SPECKLE-NOISE PATTERNS 失效
标题翻译：手持式平面激光照明和成像（PLIIM）装置使用线性激光二极管对阵列安装在区域图像检测阵列上，用于照射与多个光学组合的空间无关的平面激光照射束（图1） PLIBS）通过图像区域图像检测阵列的视场（FOV）扫描，并通过临时平均检测的带状噪声模式降低检测到的二维图像中的带状图案噪声
公开(公告)号：US06971575B2
公开(公告)日：2005-12-06
申请号：US10118850
申请日：2002-04-08
申请人： Constantine J. Tsikos , C. Harry Knowles , Xiaoxun Zhu , Michael D. Schnee , Allan Wirth , Timothy A. Good
发明人： Constantine J. Tsikos , C. Harry Knowles , Xiaoxun Zhu , Michael D. Schnee , Allan Wirth , Timothy A. Good
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： A hand-supportable area-type planar laser illumination and imaging (PLIIM) based device comprising an area-type image formation and detection (IFD) module having a 2-D array of image detection elements. The IFD module also includes image formation optics having a 3-D field of view (FOV). The 3-D FOV focuses a 2-D image of said object onto the 2-D array of image detection elements. A pair of planar laser illumination arrays (PLIAs) are arranged on opposite sides of the linear image formation and detection module, and produce 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 PLIB. The composite PLIB is automatically swept through the 3-D field of view so that the composite PLIB is arranged in a coplanar relationship with at least a portion of the 3-D FOV.
摘要翻译：一种手持式区域型平面激光照明和成像（PLIIM）的装置，其包括具有图像检测元件的2-D阵列的区域型图像形成和检测（IFD）模块。 IFD模块还包括具有3-D视场（FOV）的图像形成光学器件。 3-D FOV将所述对象的2-D图像聚焦到图像检测元件的2-D阵列上。一对平面激光照明阵列（PLIA）布置在线性图像形成和检测模块的相对侧上，并且产生多个相对于其它PLIB组件光学组合的空间非相干平面激光照明光束（PLIB）部件以便生产复合PLIB。复合PLIB自动扫过3-D视野，使得复合PLIB与3-D FOV的至少一部分以共面关系排列。

34. 发明授权

US07070107B2 Led-based planar light illumination and imaging (PLIIM) systems 失效
标题翻译：基于LED的平面光照明和成像（PLIIM）系统
公开(公告)号：US07070107B2
公开(公告)日：2006-07-04
申请号：US10156705
申请日：2002-05-24
申请人： Constantine J. Tsikos , Timothy A. Good , Michael D. Schnee , Xiaoxun Zhu , Thomas Amundsen , C. Harry Knowles
发明人： Constantine J. Tsikos , Timothy A. Good , Michael D. Schnee , Xiaoxun Zhu , Thomas Amundsen , C. Harry Knowles
IPC分类号： G06K7/10
CPC分类号： G02B19/0066 , B82Y15/00 , G02B19/0014 , G02B19/0028 , G02B19/0057 , G02B19/009 , G02B26/10 , G02B26/105 , G02B27/0961 , G02B27/0966 , G02B27/48 , G06K7/10554 , G06K7/10683 , G06K7/10722 , G06K7/10732 , G06K7/10811 , G06K7/10861 , H01S5/02248 , H01S5/4025
摘要： A planar light illumination and imaging system for illuminating an object and forming an image thereof. The planar light illumination and imaging system which comprises an image formation and detection module having a field of view (FOV) focused at an image detecting array. A planar light illumination array (PLIA) constructed from an plurality of planar light illumination modules (PLIMs) is arranged in rectilinear manner. Each planar light illumination module comprises a visible light emitting diode (LED), a focusing lens, and a cylindrical optical element arranged therewith to produce a planar light illumination beam component; and wherein the individual planar light illumination beam components produced from the plurality of planar light illumination modules are optically combined to produce a composite substantially planar light illumination beam having substantially-planar spatial distribution characteristics that extend through the field of view (FOV) of the image formation and detection module, so that light reflected off an object illuminated by the planar light illumination beam is focused along the field of view and onto the image detecting array to form an image of the illuminated object.
摘要翻译：一种用于照亮物体并形成其图像的平面光照射和成像系统。平面光照明和成像系统，其包括具有聚焦在图像检测阵列的视场（FOV）的图像形成和检测模块。由多个平面光照射模块（PLIM）构成的平面光照射阵列（PLIA）以直线方式布置。每个平面光照射模块包括可见光发光二极管（LED），聚焦透镜和与其配置的圆柱形光学元件，以产生平面光照射束分量; 并且其中从所述多个平面光照射模块产生的各个平面光照射光束分量被光学地组合以产生具有基本上平面的空间分布特征的复合的基本上平面的光照射束，所述光照射束延伸通过所述图像的视场（FOV）形成和检测模块，使得由平面光照射光束照射的物体反射的光被聚焦在视场上并且到达图像检测阵列上以形成被照射物体的图像。

35. 发明授权

US07104455B2 Planar light illumination and imaging (PLIIM) system employing LED-based planar light illumination arrays (PLIAS) and an area-type image detection array 失效
标题翻译：采用基于LED的平面光照明阵列（PLIAS）和区域型图像检测阵列的平面光照和成像（PLIIM）系统
公开(公告)号：US07104455B2
公开(公告)日：2006-09-12
申请号：US10156744
申请日：2002-05-24
申请人： Constantine J. Tsikos , Timothy A. Good , Michael D. Schnee , Xiaoxun Zhu , Thomas Amundsen , C. Harry Knowles
发明人： Constantine J. Tsikos , Timothy A. Good , Michael D. Schnee , Xiaoxun Zhu , Thomas Amundsen , C. Harry Knowles
IPC分类号： G06K7/10
CPC分类号： G02B19/0066 , B82Y15/00 , G02B19/0014 , G02B19/0028 , G02B19/0057 , G02B19/009 , G02B26/10 , G02B26/105 , G02B27/0961 , G02B27/0966 , G02B27/48 , G06K7/10554 , G06K7/10683 , G06K7/10722 , G06K7/10732 , G06K7/10811 , G06K7/10861 , H01S5/02248 , H01S5/4025
摘要： Methods of and systems for illuminating objects using planar light 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 light illumination beam is produced from a planar light illumination beam array (PLIA) comprising an plurality of planar light illumination modules (PLIMs). Each PLIM comprises a visible light emitting diode (LED), a focusing lens, and a cylindrical optical element arranged therewith. The individual planar light illumination beam components produced from each PLIM are optically combined to produce a composite substantially planar light 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 light 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 light illumination beam due to the fact that the width of the planar light 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 LEDs 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光照射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。每个平面光照射束由包括多个平面光照射模块（PLIM）的平面光照射束阵列（PLIA）产生。每个PLIM包括可见发光二极管（LED），聚焦透镜和与其配置的圆柱形光学元件。从每个PLIM产生的单个平面光照射束分量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光照射束，并且因此产生系统的工作范围。优选地，每个平面光照射束分量被聚焦，使得其最小波束宽度发生在系统被设计为获取图像的最远或最大对象距离的点或平面处，由此补偿功率密度的降低入射的平面光照射光束由于平面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距离的事实。凭借本发明，现在可以在输送机，手持和保持型扫描应用中同时使用LED和高速CCD型图像检测器，享受每种这样的技术具有的优点和益处提供，同时避免迄今为止的缺点和缺点。

36. 发明授权

US07086594B2 Planar light illumination and imaging (PLIIM) systems employing LED-based planar light illumination arrays (PLIAS) and linear electronic image detection arrays 失效
标题翻译：采用基于LED的平面光照明阵列（PLIAS）和线性电子图像检测阵列的平面光照和成像（PLIIM）系统
公开(公告)号：US07086594B2
公开(公告)日：2006-08-08
申请号：US10156683
申请日：2002-05-24
申请人： Constantine J. Tsikos , Timothy A. Good , Michael D. Schnee , Xiaoxun Zhu , Thomas Amundsen , C. Harry Knowles
发明人： Constantine J. Tsikos , Timothy A. Good , Michael D. Schnee , Xiaoxun Zhu , Thomas Amundsen , C. Harry Knowles
IPC分类号： G06K7/14
CPC分类号： G02B19/0066 , B82Y15/00 , G02B19/0014 , G02B19/0028 , G02B19/0057 , G02B19/009 , G02B26/10 , G02B26/105 , G02B27/0961 , G02B27/0966 , G02B27/48 , G06K7/10554 , G06K7/10683 , G06K7/10722 , G06K7/10732 , G06K7/10811 , G06K7/10861 , H01S5/02248 , H01S5/4025
摘要： Methods of and systems for illuminating objects using planar light 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 light illumination beam is produced from a planar light illumination beam array (PLIA) comprising an plurality of planar light illumination modules (PLIMs). Each PLIM comprises a visible light emitting diode (LED), a focusing lens, and a cylindrical optical element arranged therewith. The individual planar light illumination beam components produced from each PLIM are optically combined to produce a composite substantially planar light 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 light 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 light illumination beam due to the fact that the width of the planar light 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 LEDs 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光照射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。每个平面光照射束由包括多个平面光照射模块（PLIM）的平面光照射束阵列（PLIA）产生。每个PLIM包括可见发光二极管（LED），聚焦透镜和与其配置的圆柱形光学元件。从每个PLIM产生的单个平面光照射束分量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光照射束，并且因此产生系统的工作范围。优选地，每个平面光照射束分量被聚焦，使得其最小波束宽度发生在系统被设计为获取图像的最远或最大对象距离的点或平面处，由此补偿功率密度的降低入射的平面光照射光束由于平面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距离的事实。凭借本发明，现在可以在输送机，手持和保持型扫描应用中同时使用LED和高速CCD型图像检测器，享受每种这样的技术具有的优点和益处提供，同时避免迄今为止的缺点和缺点。

37. 发明授权

US07513428B2 Planar laser illumination and imaging device employing laser current modulation to generate spectral components and reduce temporal coherence of laser beam, so as to achieve a reduction in speckle-pattern noise during time-averaged detection of images of objects illuminated thereby during imaging operations 失效
标题翻译：使用激光电流调制的平面激光照明和成像装置产生光谱分量并减少激光束的时间相干性，从而在成像操作期间由此照射的物体的图像的时间平均检测期间实现斑点图案噪声的减少
公开(公告)号：US07513428B2
公开(公告)日：2009-04-07
申请号：US11603349
申请日：2006-11-21
申请人： Patrick Giordano , Stephen Colavito , Allan Wirth , William Svedas , Timothy A. Good , Andrew Jankevics , C. Harry Knowles , Constantine J. Tsikos
发明人： Patrick Giordano , Stephen Colavito , Allan Wirth , William Svedas , Timothy A. Good , Andrew Jankevics , C. Harry Knowles , Constantine J. Tsikos
IPC分类号： G06K7/10
CPC分类号： G06K7/10 , H04N1/02865 , H04N1/03
摘要： An imaging device including at least one imaging array and image formation optics that provide a field of view corresponding to the imaging array. At least one illumination module (which includes at least one source of coherent illumination) produces planar light illumination that substantially overlaps the field of view corresponding to the imaging array. Illumination control circuitry modulates the power level of illumination produced by the source of coherent illumination during each photo-integration time period of the imaging array to thereby reduce speckle noise in images captured by the imaging array. The illumination control circuitry preferably modulates the power level of illumination by controlling the number and/or duration of time periods corresponding to different power levels of illumination produced by the source of coherent illumination during each photo-integration time period of the imaging array.
摘要翻译：一种成像装置，包括至少一个成像阵列和图像形成光学器件，其提供对应于成像阵列的视场。至少一个照明模块（其包括至少一个相干照明源）产生基本上与对应于成像阵列的视野重叠的平面光照射。照明控制电路在成像阵列的每个光积分时间段期间调制由相干照明源产生的照明的功率电平，从而减少由成像阵列捕获的图像中的斑点噪声。照明控制电路优选地通过控制对应于在成像阵列的每个光合成时间段期间由相干照明源产生的不同功率电平的时间段的数量和/或持续时间来调制照明的功率电平。

38. 发明授权

US07140543B2 Planar light illumination and imaging device with modulated coherent illumination that reduces speckle noise induced by coherent illumination 失效
标题翻译：平面光照和具有调制相干照明的成像装置，可减少由相干照明引起的斑点噪声
公开(公告)号：US07140543B2
公开(公告)日：2006-11-28
申请号：US10186276
申请日：2002-06-27
申请人： Patrick Giordano , Stephen Colavito , Allan Wirth , William Svedas , Timothy A. Good , Andrew Jankevics , C. Harry Knowles , Constantine J. Tsikos
发明人： Patrick Giordano , Stephen Colavito , Allan Wirth , William Svedas , Timothy A. Good , Andrew Jankevics , C. Harry Knowles , Constantine J. Tsikos
IPC分类号： G06K7/10 , G06K7/14
CPC分类号： G06K7/10732 , G02B27/48 , G06K7/10594 , G06K7/10752 , G06K9/26 , G06K9/325 , G06K2207/1018
摘要： A device including at least one image detection array and image formation optics that provide a field of view corresponding to the image detection array. At least one illumination module (which includes at least one source of coherent illumination) produces planar light illumination that substantially overlaps the field of view corresponding to the image detection array. Illumination control circuitry modulates the power level of illumination produced by the source of coherent illumination during each photo-integration time period of the image detection array to thereby reduce speckle noise in images captured by the image detection array. The illumination control circuitry preferably modulates the power level of illumination by controlling the number and/or duration of time periods corresponding to different power levels of illumination produced by the source of coherent illumination during each photo-integration time period of the image detection array.
摘要翻译：一种包括至少一个图像检测阵列和图像形成光学器件的装置，其提供对应于图像检测阵列的视场。至少一个照明模块（其包括至少一个相干照明源）产生基本上与对应于图像检测阵列的视野重叠的平面光照射。照明控制电路在图像检测阵列的每个光积分时间段期间调制由相干照明源产生的照明的功率电平，从而减少由图像检测阵列捕获的图像中的斑点噪声。照明控制电路优选地通过控制对应于由图像检测阵列的每个光积分时间段期间的相干照明源产生的不同照明功率电平的时间段的数量和/或持续时间来调制照明的功率电平。

39. 发明授权

US06739511B2 METHOD OF SPECKLE-NOISE PATTERN REDUCTION AND APPARATUS THEREFOR BASED ON REDUCING THE TEMPORAL-COHERENCE OF THE PLANAR LASER ILLUMINATION BEAM BEFORE IT ILLUMINATES THE TARGET OBJECT BY APPLYING TEMPORAL PHASE MODULATION TECHNIQUES DURING THE TRANSMISSION OF THE PLIB TOWARDS THE TARGET 失效
公开(公告)号：US06739511B2
公开(公告)日：2004-05-25
申请号：US10136621
申请日：2002-04-30
申请人： Constantine J. Tsikos , C. Harry Knowles , Allan Wirth , Timothy A. Good , Andrew Jankevics
发明人： Constantine J. Tsikos , C. Harry Knowles , Allan Wirth , Timothy A. Good , Andrew Jankevics
IPC分类号： G06K710
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 illuminated 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.

40. 发明授权

US06991165B2 METHOD OF SPECKLE-NOISE PATTERN REDUCTION AND APPARATUS THEREFOR BASED ON REDUCING THE TEMPORAL COHERENCE OF THE PLANAR LASER ILLUMINATION BEAM BEFORE IT ILLUMINATES THE TARGET OBJECT BY APPLYING TEMPORAL INTENSITY MODULATION TECHNIQUES DURING THE TRANSMISSION OF THE PLIB TOWARDS THE TARGET 失效
标题翻译：基于减少平面激光照明光束的时间相干性的带状噪声模式的方法及其设备之前，通过在传输目标之前应用时间强度调制技术，在目标对象之前，
公开(公告)号：US06991165B2
公开(公告)日：2006-01-31
申请号：US10136182
申请日：2002-04-30
申请人： Constantine J. Tsikos , C. Harry Knowles , Allan Wirth , Timothy A. Good , Andrew Jankevics
发明人： Constantine J. Tsikos , C. Harry Knowles , Allan Wirth , Timothy A. Good , Andrew Jankevics
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 (PLIIM) 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 said 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 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 the PLIB before the PLIB illuminates a target object.
摘要翻译：基于平面激光照明和成像（PLIIM）的相机系统，能够产生具有降低的斑纹图案噪声水平的数字图像。基于PLIIM的相机系统包括平面激光照明阵列（PLIA），其包括用于产生和投影平面激光照射光束（PLIB）的多个激光二极管，以便在物体移动经过所述基于PLIIM的照相机系统时照射对象。提供具有图像检测阵列和成像光学元件的图像形成和检测（IFD）模块，用于向所述图像检测阵列提供视场（FOV）。 PLIB和FOV沿相机系统的工作范围以共面关系排列，使得PLIB主要照射在IFD模块的FOV内。斑点图案降噪子系统与PLIA集成，用于在PLIB照亮目标对象之前减少PLIB的时间相干性。

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