公开(公告)号：US06499661B1

公开(公告)日：2002-12-31

申请号：US09499529

申请日：2000-02-10

申请人： Mark Lucera ,  Frank Check ,  C. Harry Knowles ,  Xiaoxun Zhu ,  LeRoy Dickson

发明人： Mark Lucera ,  Frank Check ,  C. Harry Knowles ,  Xiaoxun Zhu ,  LeRoy Dickson

IPC分类号： G06K710

CPC分类号： 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 ,  G06K7/10861 ,  G06K7/10871 ,  G06K7/10881 ,  G06K7/10891 ,  G06K7/109 ,  G06K7/14 ,  G06K17/0022 ,  G06K2207/1013 ,  G07F11/002 ,  G07G1/0054

摘要： The effects of paper/substrate noise are significantly reduced in multi-focal zone laser scanning systems by processing analog scan data signals with a scan data signal processor having a plurality of pass-band filters and amplifiers that are automatically selected for passing only the spectral components of an analog scan data signal produced when a bar code symbol is scanned at a particular focal zone in the laser scanning system. Two or more different pass-band filter structures can be provided for use in the scan data signal processor, wherein each pass-band filter structure is tuned to the spectral band associated with a particular focal zone in the laser scanning system. When a bar code symbol is scanned by a laser beam focused within the first focal zone or scanning range of the system, the pass-band filter structure associated with this focal zone or scanning range is automatically switched into operation. Only spectral components associated with the produced analog scan data signal and noise existing over this pass-band are allowed within the analog signal processor. By virtue of the present invention, first and second derivative signals can be generated and processed to produce a corresponding digital scan data signal for use in subsequent digitizing and decode processing operations, without compromising system performance due to the destructive effects of thermal and substrate noise outside the spectral pass-band of interest for the bar code symbol being scanned.

摘要翻译： 通过用具有多个通带滤波器和放大器的扫描数据信号处理器处理模拟扫描数据信号，在多焦点区域激光扫描系统中，纸/衬底噪声的影响显着降低，这些扫描数据信号处理器被自动选择以仅通过光谱分量 当在激光扫描系统中的特定焦点区域扫描条形码符号时产生的模拟扫描数据信号。 可以提供两个或更多个不同的通带滤波器结构用于扫描数据信号处理器，其中每个通带滤波器结构被调谐到与激光扫描系统中的特定焦点区域相关联的光谱带。 当通过聚焦在系统的第一焦点区域或扫描范围内的激光束扫描条形码符号时，与该焦点区域或扫描范围相关联的通带滤波器结构被自动切换到操作中。 在模拟信号处理器内只允许与产生的模拟扫描数据信号相关联的频谱分量和存在于该通带上的噪声。 凭借本发明，可以生成和处理第一和第二导数信号以产生相应的数字扫描数据信号，以用于随后的数字化和解码处理操作，而不会由于外部的热和衬底噪声的破坏性影响而不影响系统性能 正在扫描的条形码符号感兴趣的光谱通带。

公开(公告)号：US06422467B1

公开(公告)日：2002-07-23

申请号：US09241930

申请日：1999-02-02

申请人： Mark Lucera ,  Frank Check ,  C. Harry Knowles ,  Xiaoxun Zhu ,  LeRoy Dickson

发明人： Mark Lucera ,  Frank Check ,  C. Harry Knowles ,  Xiaoxun Zhu ,  LeRoy Dickson

IPC分类号： G06K710

摘要： The effects of papers/substrate noise are significantly reduced in multi-focal zone laser scanning systems by processing analog scan data signals with a scan data signal processor having a plurality of pass-band filters and amplifiers that are automatically selected for passing only the spectral components of an analog scan data signal produced when a bar code symbol is scanned at a particular focal zone in the laser scanning system. Two or more different pass-band filter structures can be provided for use in the scan data signal processor, wherein each pass-band filter structure is tuned to the spectral band associated with a particular focal zone in the laser scanning system. When a bar code symbol is scanned by a laser beam focussed within the first focal zone or scanning range of the system, the pass-band filter structure associated with this focal zone or scanning range is automatically switched into operation using a control signal produced by determining the focal distance of the laser scanning beam producing the analog scan data signal and noise existing over this pass-band are allowed within the analog signal processor. By virtue of the present invention, first and second derivative signals can be generated and processed to produce a corresponding digital scan data signal for use in subsequent digitizing and decode processing operations, without compromising system performance due to the destructive effects of thermal and substrate noise outside the spectral pass-band of interest for the bar code symbol being scanned.

公开(公告)号：US07255280B2

公开(公告)日：2007-08-14

申请号：US11098584

申请日：2005-04-04

申请人： Robert E. Blake ,  Charles A. Naylor ,  Stephen J. Colavito ,  Thomas Amundsen ,  Thomas Carullo ,  C. Harry Knowles

发明人： Robert E. Blake ,  Charles A. Naylor ,  Stephen J. Colavito ,  Thomas Amundsen ,  Thomas Carullo ,  C. Harry Knowles

IPC分类号： G02B26/00

CPC分类号： G06K7/10643 ,  G06F17/30879

摘要： Apparatus for deflecting a light beam, comprising: a scanning element having a base portion, a light beam deflecting portion, and a gap region disposed therebetween. The base portion is anchored with respect to an optical bench to permit the light beam deflecting portion to pivot about a fixed pivot point defined between the base portion and the gap region. The light beam deflecting portion has a natural resonant frequency of oscillation about the fixed pivot point and is mechanically-damped at the gap region. A permanent magnet and right beam deflating portion are mounted on the light beam deflecting portion. A magnetic-field producing coil produces a force field that interacts with the permanent magnet and forces the light beam deflecting portion to oscillate about the fixed pivot point at a controlled frequency of oscillation that is substantially different from the natural resonant frequency of oscillation of the light beam deflecting portion.

摘要翻译： 用于偏转光束的装置，包括：具有基部，光束偏转部分和设置在其间的间隙区域的扫描元件。 基部相对于光台被锚固，以允许光束偏转部分围绕限定在基部和间隙区之间的固定枢转点枢转。 光束偏转部分具有围绕固定枢转点的振荡的固有谐振频率，并且在间隙区域被机械阻尼。 永磁体和右束放气部分安装在光束偏转部分上。 磁场产生线圈产生与永久磁铁相互作用的力场，并迫使光束偏转部分以受控的振荡频率围绕固定枢转点振荡，该频率与光的振荡的固有谐振频率基本上不同 梁偏转部分。

公开(公告)号：US20050236486A1

公开(公告)日：2005-10-27

申请号：US11098584

申请日：2005-04-04

申请人： Robert Blake ,  Charles Naylor ,  Stephen Colavito ,  Thomas Amundsen ,  Thomas Carullo ,  C. Harry Knowles

发明人： Robert Blake ,  Charles Naylor ,  Stephen Colavito ,  Thomas Amundsen ,  Thomas Carullo ,  C. Harry Knowles

IPC分类号： G02B5/08 ,  G02B26/00 ,  G06F17/30 ,  G06K7/10

CPC分类号： G06K7/10643 ,  G06F17/30879

摘要： Disclosed is laser beam scanning apparatus in the form of an electronically-controlled mechanically-damped off-resonant laser beam scanning mechanism. The scanning mechanism comprises an etched scanning element having a small flexible gap region of closely-controlled dimensions disposed between an anchored base portion and a laser beam deflecting portion The light beam deflecting portion supports a permanent magnet and a light beam deflecting element (e.g., mirror or hologram). A reversible magnetic force field producing device (e.g., an electromagnet) is placed in close proximity with the permanent magnet so that it may be forcibly driven into oscillation in response to electrical current flowing through the electromagnet. The resonant frequency of oscillation of the laser beam deflecting portion relative to the anchored base portion is determined by the closely controlled dimensions of the flexible gap region set during manufacture. The steady-state frequency of oscillation of the laser beam deflecting portion is determined by the frequency of polarity reversal of the electromagnet, which is electronically controlled by the polarity of electrical current supplied thereto. In the illustrative embodiments, the forcing frequency of the electromagnet is selected to be at least ten percent off (i.e., greater or less than) the natural resonant frequency of the laser beam deflecting portion of the scanning element. The steady-state frequency of oscillation can be set at the time of manufacture to be any one of a very large range of values (e.g., 25-127 Hz) for use in both low-speed and high-speed laser scanning systems.

摘要翻译： 公开了电子控制机械阻尼非共振激光束扫描机构形式的激光束扫描装置。 扫描机构包括蚀刻的扫描元件，其具有设置在锚定的基部和激光束偏转部分之间的紧密控制的尺寸的小的柔性间隙区域。光束偏转部分支撑永磁体和光束偏转元件（例如，镜 或全息图）。 可逆磁场产生装置（例如，电磁体）被放置成与永磁体紧密相邻，使得其可以响应于流过电磁体的电流被强制地驱动成振荡。 激光束偏转部分相对于锚定基部的振荡的谐振频率由制造期间设置的柔性间隙区域的紧密控制的尺寸确定。 激光束偏转部的振荡的稳态频率由电磁体的极性反转的频率决定，该电磁体由供给的电流的极性进行电子控制。 在说明性实施例中，电磁体的强制频率被选择为扫描元件的激光束偏转部分的固有谐振频率的至少百分之十（即大于或小于）。 振荡的稳态频率可以在制造时设定为用于低速和高速激光扫描系统的非常大范围的值（例如，25-127Hz）中的任何一个。

公开(公告)号：US06227450B1

公开(公告)日：2001-05-08

申请号：US08931691

申请日：1997-09-16

申请人： Robert E. Blake ,  Charles A. Naylor ,  Stephen J. Colavito ,  Thomas Amundsen ,  Thomas Carullo ,  C. Harry Knowles

发明人： Robert E. Blake ,  Charles A. Naylor ,  Stephen J. Colavito ,  Thomas Amundsen ,  Thomas Carullo ,  C. Harry Knowles

IPC分类号： G06K710

CPC分类号： G06K7/10851 ,  G02B26/105 ,  G02B26/106 ,  G06K7/10574 ,  G06K7/10643

摘要： Disclosed is laser beam scanning apparatus in the form of an electronically-controlled mechanically-damped off-resonant laser beam scanning mechanism. The scanning mechanism comprises an etched scanning element having a small flexible gap region of closely-controlled dimensions disposed between an anchored base portion and a laser beam deflecting portion The light beam deflecting portion supports a permanent magnet and a light beam deflecting element (e.g., mirror or hologram). A reversible magnetic force field producing device (e.g., an electromagnet) is placed in close proximity with the permanent magnet so that it may be forcibly driven into oscillation in response to electrical current flowing through the electromagnet. The resonant frequency of oscillation of the laser beam deflecting portion relative to the anchored base portion is determined by the closely controlled dimensions of the flexible gap region set during manufacture. The steady-state frequency of oscillation of the laser beam deflecting portion is determined by the frequency of polarity reversal of the electromagnet, which is electronically controlled by the polarity of electrical current supplied thereto.

摘要翻译： 公开了电子控制机械阻尼非共振激光束扫描机构形式的激光束扫描装置。 扫描机构包括蚀刻的扫描元件，其具有设置在锚定的基部和激光束偏转部分之间的紧密控制的尺寸的小的柔性间隙区域。光束偏转部分支撑永磁体和光束偏转元件（例如，镜 或全息图）。 可逆磁场产生装置（例如，电磁体）被放置成与永磁体紧密相邻，使得其可以响应于流过电磁体的电流被强制地驱动成振荡。 激光束偏转部分相对于锚定基部的振荡的谐振频率由制造期间设置的柔性间隙区域的紧密控制的尺寸确定。 激光束偏转部的振荡的稳态频率由电磁体的极性反转的频率决定，该电磁体由供给的电流的极性进行电子控制。

公开(公告)号：US06874689B2

公开(公告)日：2005-04-05

申请号：US09895808

申请日：2001-03-13

申请人： Robert E. Blake ,  Charles A. Naylor ,  Steve J. Colavito ,  Thomas Amundsen ,  Thomas Carullo ,  C. Harry Knowles

发明人： Robert E. Blake ,  Charles A. Naylor ,  Steve J. Colavito ,  Thomas Amundsen ,  Thomas Carullo ,  C. Harry Knowles

IPC分类号： G02B5/08 ,  G02B26/00 ,  G06F17/30 ,  G06K7/10

CPC分类号： G06K7/10643 ,  G06F17/30879

摘要： Disclosed is laser beam scanning apparatus in the form of an electronically-controlled mechanically-damped off-resonant laser beam scanning mechanism. The scanning mechanism comprises an etched scanning element having a small flexible gap region of closely-controlled dimensions disposed between an anchored base portion and a laser beam deflection portion The light beam deflection portion supports a permanent magnet and a light beam deflecting element (e.g., mirror or hologram). A reversible magnetic force field producing device (e.g., an electromagnet) is placed in close proximity with the permanent magnet so that it may be forcibly driven into oscillation in response to electrical current flowing through the electromagnet. The resonant frequency of oscillation of the laser beam deflecting portion relative to the anchored base portion is determined by the closely controlled dimensions of the flexible gap region set during manufacture. The steady-state frequency of oscillation of the laser beam deflecting portion is determined by the frequency of polarity reversal of the electromagnet, which is electronically controlled by the polarity of electrical current supplied thereto. In the illustrative embodiments, the forcing frequency of the electromagnet is selected to be at least ten percent off (i.e. greater or less than) the natural resonant frequency of the laser beam deflecting portion of manufacture to be any one of a very large range of values (e.g., 25-127 Hz) for use in both low-speed and high-speed laser scanning systems.

公开(公告)号：US08132731B2

公开(公告)日：2012-03-13

申请号：US12012496

申请日：2008-02-01

申请人： Anatoly Kotlarsky ,  Xiaoxun Zhu ,  Michael Veksland ,  Ka Man Au ,  Patrick Giordano ,  Weizhen Yan ,  Jie Ren ,  Taylor Smith ,  Michael V. Miraglia ,  C. Harry Knowles ,  Sudhin Mandal ,  Shawn De Foney ,  Christopher Allen ,  David M. Wilz, Sr.

发明人： Anatoly Kotlarsky ,  Xiaoxun Zhu ,  Michael Veksland ,  Ka Man Au ,  Patrick Giordano ,  Weizhen Yan ,  Jie Ren ,  Taylor Smith ,  Michael V. Miraglia ,  C. Harry Knowles ,  Sudhin Mandal ,  Shawn De Foney ,  Christopher Allen ,  David M. Wilz, Sr.

IPC分类号： G06K7/10

CPC分类号： G06K7/10821 ,  G06K7/10722 ,  G06K7/10732 ,  G06K7/10752 ,  G06K7/109

摘要： A digital image capture and processing system includes a housing having an imaging window with an illumination-focusing lens structure integrated therewithin. A printed circuit (PC) board is mounted in the housing and has a front surface, a rear surface, and a light transmission aperture spatially aligned with the imaging window. An area-type image detection array is mounted on the rear surface of the PC board. A linear array of light emitting diodes (LEDs) is mounted on the front surface of the PC board, adjacent the light transmission aperture and aligned with the illumination-focusing lens structure. The LEDs produce a plurality of illumination beams which are transmitted through the illumination-focusing lens structure to generate a field of illumination that is projected within the FOV of the system. Illumination reflected and/or scattered off an object within the FOV is retransmitted through the imaging window and the light transmission aperture, and detected by the area-type image detection array.

摘要翻译： 数字图像捕获和处理系统包括具有与其内在一体的照明聚焦透镜结构的成像窗口的壳体。 印刷电路板安装在壳体中，并具有与成像窗口空间对准的前表面，后表面和光传输孔。 区域型图像检测阵列安装在PC板的后表面上。 发光二极管（LED）的线性阵列安装在PC板的前表面上，邻近光传输孔并与照明聚焦透镜结构对准。 LED产生多个照明光束，透射通过照明聚焦透镜结构以产生投射在系统的FOV内的照明场。 通过成像窗口和光传输孔径重新发射反射和/或离开FOV内物体的照明，并由区域型图像检测阵列检测。

公开(公告)号：US08047438B2

公开(公告)日：2011-11-01

申请号：US12012203

申请日：2008-01-31

申请人： Anatoly Kotlarsky ,  Xiaoxun Zhu ,  Michael Veksland ,  Ka Man Au ,  Patrick Giordano ,  Weizhen Yan ,  Jie Ren ,  Taylor Smith ,  Michael V. Miraglia ,  C. Harry Knowles ,  Sudhin Mandal ,  Shawn De Foney ,  Christopher Allen ,  David M. Wilz, Sr.

发明人： Anatoly Kotlarsky ,  Xiaoxun Zhu ,  Michael Veksland ,  Ka Man Au ,  Patrick Giordano ,  Weizhen Yan ,  Jie Ren ,  Taylor Smith ,  Michael V. Miraglia ,  C. Harry Knowles ,  Sudhin Mandal ,  Shawn De Foney ,  Christopher Allen ,  David M. Wilz, Sr.

IPC分类号： G06K7/10

CPC分类号： G06K7/10821 ,  G06K7/10722 ,  G06K7/10732 ,  G06K7/10752 ,  G06K7/109

摘要： A digital image capture and processing system including a housing having an imaging window; and an image formation and detection subsystem with an area-type image detection array having a periodic snap shot mode of the operation supporting the periodic occurrence of snap-shot type image acquisition cycles at a high-repetition rate, during object illumination and imaging operations. The system also includes an illumination subsystem, with a LED illumination array, for producing a field of illumination within the FOV, and illuminating the object detected in the FOV. In the illustrative embodiment, the time duration of illumination of an object within the FOV by the illumination subsystem while the area-type image detection array detects each 2D digital image frame of the object formed on the area-type image detection array, is substantially equal to the time duration that the digital image processing subsystem is allowed to process the detected 2D digital image frame and read a 1D and/or 2D code symbol graphically represented therein.

摘要翻译： 一种数字图像捕获和处理系统，包括具有成像窗口的壳体; 以及图像形成和检测子系统，其具有区域型图像检测阵列，其具有在对象照明和成像操作期间以高重复率支持快照型图像获取周期的周期性发生的操作的周期性快照模式。 该系统还包括具有LED照明阵列的照明子系统，用于产生FOV内的照明场，以及照射FOV中检测到的物体。 在说明性实施例中，当区域型图像检测阵列检测到在区域型图像检测阵列上形成的物体的每个2D数字图像帧时，照明子系统在FOV内照射物体的持续时间基本相等 到允许数字图像处理子系统处理检测到的2D数字图像帧并读取其中图形表示的1D和/或2D代码符号的持续时间。

公开(公告)号：US07841533B2

公开(公告)日：2010-11-30

申请号：US12001758

申请日：2007-12-12

申请人： Anatoly Kotlarsky ,  Xiaoxun Zhu ,  Michael Veksland ,  Ka Man Au ,  Patrick Giordano ,  Weizhen Yan ,  Jie Ren ,  Taylor Smith ,  Michael V. Miraglia ,  C. Harry Knowles ,  Sudhin Mandal ,  Shawn De Foney ,  Christopher Allen ,  David M. Wilz, Sr.

发明人： Anatoly Kotlarsky ,  Xiaoxun Zhu ,  Michael Veksland ,  Ka Man Au ,  Patrick Giordano ,  Weizhen Yan ,  Jie Ren ,  Taylor Smith ,  Michael V. Miraglia ,  C. Harry Knowles ,  Sudhin Mandal ,  Shawn De Foney ,  Christopher Allen ,  David M. Wilz, Sr.

IPC分类号： G03B7/08

CPC分类号： G06K7/10821 ,  G06K7/10722 ,  G06K7/10732 ,  G06K7/10752 ,  G06K7/109

摘要： A method of capturing processing digital images of an object, using a hand-supportable digital image capture and processing system having a trigger switch, an imaging window and a field of view (FOV) projected therethrough and onto an area-type image detection array. The method involves automatically detecting an object within the FOV, and generating a first trigger event indicative of automatic object detection within the FOV. In response to the generation of the first trigger event signal, the object targeting illumination subsystem automatically generates and projects a visible targeting illumination beam within the FOV. The human operator aligns the visible targeting illumination beam with the object in the FOV, and then manually actuates the trigger switch to generate a second trigger event signal. In response to the generation of the second trigger event signal, a field of illumination is automatically generated and projected through the imaging window and within the FOV, while the targeting illumination beam is momentarily ceased, and 2D digital images of the object are formed and detected on the area-type image detection array, and one or more of the detected 2-D digital images are captured, buffered and processed, so as to read one or more 1D and/or 2D code symbols graphically represented in the one or more detected 2D digital images.

摘要翻译： 使用具有投射在其上的触发开关，成像窗口和视场（FOV）的手持式数字图像捕获和处理系统来捕获处理对象的数字图像并在区域型图像检测阵列上的方法。 该方法包括自动检测FOV内的对象，并产生指示FOV内的自动对象检测的第一触发事件。 响应于产生第一触发事件信号，物体瞄准照明子系统自动生成并投射FOV内的可见目标照明光束。 人类操作者将可视目标照明光束与FOV中的物体对准，然后手动致动触发开关以产生第二触发事件信号。 响应于第二触发事件信号的产生，通过成像窗口和FOV内的自动产生照射场，并且瞄准照明光束暂时停止，并且形成并检测对象的2D数字图像 在区域型图像检测阵列上，并且捕获，缓冲和处理检测到的2-D数字图像中的一个或多个，以便读取在一个或多个检测到的图像中图形表示的一个或多个1D和/或2D代码符号 2D数字图像。

公开(公告)号：US07793841B2

公开(公告)日：2010-09-14

申请号：US11980084

申请日：2007-10-30

申请人： C. Harry Knowles ,  Xiaoxun Zhu ,  Timothy Good ,  Tao Xian ,  Anatoly Kotlarsky ,  Michael Veksland ,  Mark Hernandez ,  John Gardner ,  Steven Essinger ,  Patrick Giordano ,  Sean Kearney ,  Mark Schmidt ,  John A. Furlong ,  Nicholas Ciarlante ,  Yong Liu ,  Jie Ren ,  Xi Tao ,  JiBin Liu ,  Ming Zhuo ,  Duane Ellis

发明人： C. Harry Knowles ,  Xiaoxun Zhu ,  Timothy Good ,  Tao Xian ,  Anatoly Kotlarsky ,  Michael Veksland ,  Mark Hernandez ,  John Gardner ,  Steven Essinger ,  Patrick Giordano ,  Sean Kearney ,  Mark Schmidt ,  John A. Furlong ,  Nicholas Ciarlante ,  Yong Liu ,  Jie Ren ,  Xi Tao ,  JiBin Liu ,  Ming Zhuo ,  Duane Ellis

IPC分类号： G06K7/10

CPC分类号： A47F9/046 ,  G02B27/48 ,  G06K7/10544 ,  G06K7/10564 ,  G06K7/10574 ,  G06K7/10613 ,  G06K7/10623 ,  G06K7/10693 ,  G06K7/10712 ,  G06K7/10722 ,  G06K7/10732 ,  G06K7/10782 ,  G06K7/10792 ,  G06K7/10851 ,  G06K7/10861 ,  G06K9/2027 ,  G06K2017/0067 ,  G06K2207/1012 ,  G06Q20/208 ,  G06Q30/06 ,  G07G1/0036 ,  G07G1/0045 ,  G07G3/00 ,  G07G3/006

摘要： A laser illumination beam generation system including a laser diode (LD) for producing a laser beam in response to a diode current supplied thereto, wherein the laser beam has a central characteristic wavelength. Diode current drive circuitry generates the diode current and supplies the same to the VLD. A high frequency modulation (HFM) circuitry modulates the diode current supplied to the laser diode, so as to produce a spectral side-band components about the central characteristic wavelength, and thereby reduces the coherence of the laser illumination beam as well as its coherence length. An optical multiplexing (OMUX) device receives the laser beam as an input beam and generates multiple laser beams therefrom and recombines the multiple laser beams so as to produce a composite output laser illumination beam having reduce coherence.

摘要翻译： 一种激光照射光束产生系统，包括：激光二极管（LD），用于响应于提供给其的二极管电流产生激光束，其中所述激光束具有中心特征波长。 二极管电流驱动电路产生二极管电流并将其提供给VLD。 高频调制（HFM）电路调制提供给激光二极管的二极管电流，以产生关于中心特征波长的频谱边带分量，从而降低激光照射光束的相干性及其相干长度 。 光复用（OMUX）器件接收激光束作为输入光束，并从中产生多个激光束，并重新组合多个激光束，以产生具有减小相干性的复合输出激光照明光束。