公开(公告)号：US20120318868A1

公开(公告)日：2012-12-20

申请号：US13160897

申请日：2011-06-15

申请人： Erik Van Horn ,  Patrick Anthony Giordano ,  Thomas Amundsen ,  Daniel James Olson ,  Robert Hugh Brady ,  Stephen Colavito ,  Kevin Saber ,  Thomas Haggerty ,  David M. Wilz, SR.

发明人： Erik Van Horn ,  Patrick Anthony Giordano ,  Thomas Amundsen ,  Daniel James Olson ,  Robert Hugh Brady ,  Stephen Colavito ,  Kevin Saber ,  Thomas Haggerty ,  David M. Wilz, SR.

IPC分类号： G06K7/14

CPC分类号： G06K7/10564 ,  G06K7/146

摘要： A laser scanning bar code symbol reading system for scanning and reading poor quality or damaged bar code symbols. The system includes a housing having a light transmission window; an extremely-elongated laser beam production module for producing an extremely-elongated laser beam having (i) a direction of propagation extending along a z reference direction, (ii) a height dimension being indicated by the y reference direction, and (iii) a width dimension being indicated by the x reference direction, where x, y and z directions are orthogonal to each other. Each extremely-elongated laser beam is characterized by an elongation ratio (ER) that is defined as Y/X>4.5 for any point within the working range of the laser scanning bar code symbol reading system, extending along the z direction; where (i) Y indicates the beam height of the extremely-elongated laser beam measured in the Y reference direction, and X indicates the beam width of the extremely-elongated laser beam measured in the X reference direction, and (iii) the beam height (Y) and the laser beam width (X) are measured at 1/e2 intensity clip level. A laser scanning mechanism is provided for scanning the extremely-elongated laser beam out the light transmission window and across a scanning field defined external to the housing, in which a bar code symbol is present for scanning by the extremely-elongated laser scanning beam.

摘要翻译： 一种用于扫描和读取质量差或条形码符号损坏的激光扫描条形码符号读取系统。 该系统包括具有透光窗的外壳; 一种非常细长的激光束产生模块，用于产生非常细长的激光束，该激光束具有（i）沿着氮基准方向延伸的传播方向，（ii）由y参考方向指示的高度尺寸，以及（iii） 尺寸由x参考方向指示，其中x，y和z方向彼此正交。 每个非常细长的激光束的特征在于在激光扫描条形码符号读取系统的工作范围内沿着z方向延伸的任意点被定义为Y / X> 4.5的伸长率（ER） 其中（i）Y表示在Y参考方向上测量的非常细长的激光束的光束高度，X表示在X参考方向上测量的非常细长的激光束的光束宽度，以及（iii）光束高度 （Y）和激光束宽度（X）以1 / e2强度剪辑电平进行测量。 提供了一种激光扫描机构，用于将非常细长的激光束从光透射窗口扫描并跨过限定在外壳外部的扫描场，其中存在条形码符号用于通过非常细长的激光扫描光束进行扫描。

公开(公告)号：US08376233B2

公开(公告)日：2013-02-19

申请号：US13160897

申请日：2011-06-15

申请人： Erik Van Horn ,  Patrick Anthony Giordano ,  Thomas Amundsen ,  Daniel James Olson ,  Robert Hugh Brady ,  Stephen Colavito ,  Kevin Saber ,  Thomas Haggerty ,  David M. Wilz, Sr.

发明人： Erik Van Horn ,  Patrick Anthony Giordano ,  Thomas Amundsen ,  Daniel James Olson ,  Robert Hugh Brady ,  Stephen Colavito ,  Kevin Saber ,  Thomas Haggerty ,  David M. Wilz, Sr.

IPC分类号： G02B26/10 ,  G06K7/10 ,  G06K9/22 ,  G06K19/06

CPC分类号： G06K7/10564 ,  G06K7/146

摘要： The system includes a housing having a light transmission window and produces an extremely-elongated laser beam having an elongation ratio (ER) that is defined as greater than 4.5 for any point within the working range of the laser scanning bar code symbol reading system. A laser scanning mechanism is provided for scanning the extremely-elongated laser beam out the light transmission window and across a scanning field defined external to the housing, in which a bar code symbol is present for scanning by the extremely-elongated laser scanning beam.

摘要翻译： 该系统包括具有透光窗的壳体，并且产生非常细长的激光束，其具有在激光扫描条形码符号读取系统的工作范围内的任何点被定义为大于4.5的伸长率（ER）。 提供了一种激光扫描机构，用于将非常细长的激光束从光透射窗口扫描并跨过限定在外壳外部的扫描场，其中存在条形码符号用于通过非常细长的激光扫描光束进行扫描。

公开(公告)号：US06905071B2

公开(公告)日：2005-06-14

申请号：US10042755

申请日：2002-11-13

申请人： Mark C. Schmidt ,  Garrett Russell ,  William Martin ,  David M. Wilz, Sr. ,  Thomas Amundsen ,  Patrick Giordano ,  Shane Edmonds ,  Kevin DiPlacido ,  George Kolis ,  Stephen Colavito ,  Sergio Movsessian ,  Matthew Jefferson ,  C. Harry Knowles

发明人： Mark C. Schmidt ,  Garrett Russell ,  William Martin ,  David M. Wilz, Sr. ,  Thomas Amundsen ,  Patrick Giordano ,  Shane Edmonds ,  Kevin DiPlacido ,  George Kolis ,  Stephen Colavito ,  Sergio Movsessian ,  Matthew Jefferson ,  C. Harry Knowles

IPC分类号： G06K7/10 ,  G06K7/14

CPC分类号： G06K7/10871 ,  B82Y15/00 ,  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 ,  G06K7/10881 ,  G06K7/10891 ,  G06K7/14 ,  G06K2207/1012

摘要： A multi-mode laser-based bar code symbol reading device having a hand-supportable housing with a light transmission aperture, wherethrough visible light can exit and enter the hand-supportable housing. A laser scanning engine, disposed within the hand-supportable housing, is controlled to selectively operate in either an omni-directional scanning mode or a single line scanning mode. In the omni-directional scanning mode, the laser scanning engine projects an omni-directional scanning pattern through the light transmission aperture, detects and decodes bar code symbols on objects passing through the omni-directional scanning pattern, and produces symbol character data representative of decoded bar code symbols. In the rastered scanning mode, the laser scanning engine projects rastered scanning pattern through the light transmission aperture and detects and decodes bar code symbols on objects passing through the single line scanning pattern, and produces symbol character data representative of decoded bar code symbols. In the single-line scanning mode, the laser scanning engine projects a single line scanning pattern through the light transmission aperture and detects and decodes bar code symbols on objects passing through the single line scanning pattern, and produces symbol character data representative of decoded bar code symbols. A manually-actuatable data transmission switch, integrated with said hand-supportable housing, produces an activation signal in response to the manual-actuation of the data transmission switch. A data transmission subsystem, disposed in the hand-supportable housing, operates under control of control circuitry to communicate the symbol character data produced by the laser scanning engine to a host device operably coupled to the bar code symbol reading device. The control circuitry enables communication of symbol character data produced by the laser scanning engine in the single line or rastered scanning mode of operation to the host device in response to the activation signal produced by the data transmission switch, and the control circuitry enables communication of symbol character data produced by the laser scanning engine in the omni-directional scanning mode of operation to the host device irrespective of the activation signal produced by the data transmission switch.

公开(公告)号：US07431215B2

公开(公告)日：2008-10-07

申请号：US11505489

申请日：2006-08-15

申请人： David M. Wilz, Sr. ,  Garrett Russell ,  Mark C. Schmidt ,  Mikhail Veksland ,  William Martin ,  Patrick Giordano ,  Shane Edmonds ,  Kevin DiPlacido ,  Shawn Defoney ,  Stephen Colavito ,  Donald Hudrick ,  James Osborn ,  Thomas Amundsen ,  Benjamin Hejl

发明人： David M. Wilz, Sr. ,  Garrett Russell ,  Mark C. Schmidt ,  Mikhail Veksland ,  William Martin ,  Patrick Giordano ,  Shane Edmonds ,  Kevin DiPlacido ,  Shawn Defoney ,  Stephen Colavito ,  Donald Hudrick ,  James Osborn ,  Thomas Amundsen ,  Benjamin Hejl

IPC分类号： G06K7/10 ,  G06K9/22

CPC分类号： G06K7/10 ,  B82Y15/00 ,  G06K7/10554 ,  G06K7/10564 ,  G06K7/10584 ,  G06K7/10594 ,  G06K7/10603 ,  G06K7/10613 ,  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 ,  G06K2207/1012

摘要： An automatically-activated bar code reading system including: a visible laser light source, scanning element and a plurality of stationary mirrors. When arranged in a first configuration, the visible laser light source, scanning element and plurality of stationary mirrors cooperate to produce a visible omni-directional laser scanning pattern with multiple laser scanning lines having substantially uniform spatial and temporal intensity characteristics at a given scanning plane parallel to a scanning window within a working distance of the system. When the visible laser light source, the scanning element and the plurality of stationary mirrors are arranged in a second configuration, these components cooperate to produce a visible omni-directional laser scanning pattern having temporally varying intensity characteristics, against a single visible laser scanning line having substantially uniform spatial and temporal intensity characteristics, at a given scanning plane parallel to the scanning window within the working distance of the system.

摘要翻译： 一种自动激活的条形码读取系统，包括：可见激光光源，扫描元件和多个静止反射镜。 当以第一构造布置时，可见激光光源，扫描元件和多个静止镜协作以产生具有多个激光扫描线的可见的全向激光扫描图案，其具有在给定扫描平面处具有基本均匀的空间和时间强度特性的平行 到系统工作距离内的扫描窗口。 当可见激光光源，扫描元件和多个静止反射镜被布置成第二配置时，这些部件协作以产生具有时间上变化的强度特性的可见全能激光扫描图案，针对具有 在系统的工作距离内与扫描窗口平行的给定扫描平面处的基本均匀的空间和时间强度特性。

公开(公告)号：US07097105B2

公开(公告)日：2006-08-29

申请号：US10684273

申请日：2003-10-11

申请人： David M. Wilz, Sr. ,  Garrett Russell ,  Mark C. Schmidt ,  Mikhail Veksland ,  William Martin ,  Patrick Giordano ,  Shane Edmonds ,  Kevin DiPlacido ,  Shawn Defoney ,  Stephen Colavito ,  Donald Hudrick ,  James Osborn ,  Thomas Amundsen ,  Benjamin Hejl

发明人： David M. Wilz, Sr. ,  Garrett Russell ,  Mark C. Schmidt ,  Mikhail Veksland ,  William Martin ,  Patrick Giordano ,  Shane Edmonds ,  Kevin DiPlacido ,  Shawn Defoney ,  Stephen Colavito ,  Donald Hudrick ,  James Osborn ,  Thomas Amundsen ,  Benjamin Hejl

IPC分类号： G06K7/10 ,  G06K9/22

CPC分类号： G06K7/10 ,  B82Y15/00 ,  G06K7/10554 ,  G06K7/10564 ,  G06K7/10584 ,  G06K7/10594 ,  G06K7/10603 ,  G06K7/10613 ,  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 ,  G06K2207/1012

摘要： A multi-mode laser-based bar code symbol reading device having a hand-supportable housing with a light transmission aperture, wherethrough visible light can exit and enter the hand-supportable housing. A laser scanning engine, disposed within the hand-supportable housing, is controlled to selectively operate in either an omni-directional reading mode or a uni-directional bar code reading mode. In the omni-directional bar code reading mode, the laser scanning engine projects pattern through the light transmission aperture, an omni-directional laser scanning pattern producing multiple laser scanning lines with substantially uniform spatial and temporal intensity characteristics at any given scanning plane parallel to the light transmission aperture within the working distance of the system, and detects and decodes bar code symbols on objects passing through the omni-directional scanning pattern, and produces symbol character data representative of decoded bar code symbols. In the uni-directional bar code reading mode, the laser scanning engine projects through the light transmission aperture, a visible stroboscopically-pulsed omni-directional laser scanning pattern, against a single laser scanning line having substantially uniform spatial and temporal intensity characteristics at any given scanning plane parallel to the light transmission aperture within the working distance of the system, and detects and decodes bar code symbols on objects passing through the single laser scanning line, and produces symbol character data representative of decoded bar code symbols. A manually-actuatable data transmission switch, integrated with said hand-supportable housing, produces an activation signal in response to the manual-actuation of the data transmission switch. A data transmission subsystem, disposed in the hand-supportable housing, operates under control of control circuitry to communicate the symbol character data produced by the laser scanning engine to a host device operably coupled to the bar code symbol reading device. The control circuitry enables communication of symbol character data produced by the laser scanning engine in the uni-directional bar code reading mode of operation to the host device in response to the activation signal produced by the data transmission switch, and the control circuitry enables communication of symbol character data produced by the laser scanning engine in the omni-directional reading mode of operation to the host device irrespective of the activation signal produced by the data transmission switch.

公开(公告)号：US07523867B2

公开(公告)日：2009-04-28

申请号：US11060647

申请日：2005-02-17

申请人： William Martin ,  David M. Wilz, Sr. ,  Sergio Movsessian ,  Thomas Amundsen ,  Patrick A. Giordano

发明人： William Martin ,  David M. Wilz, Sr. ,  Sergio Movsessian ,  Thomas Amundsen ,  Patrick A. Giordano

IPC分类号： G06K7/10 ,  G06K9/22

CPC分类号： G06K7/10 ,  B82Y15/00 ,  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 ,  G06K7/14 ,  G06K2207/1012

摘要： A hand-supportable bar code symbol reading device having a laser scanning engine that is controlled to selectively operate in either an omni-directional scan mode or a single line scan mode. In the single line scan mode of operation, symbol character data produced by the laser scanning engine is communicated to a host device in response to an activation signal produced by a data transmission switch. In the omni-directional scan mode, symbol character data is communicated to the host device irrespective of the activation signal. Preferably, mode selection means selectively operates the laser scanning engine in either the omni-directional scan mode of operation or the single line scan mode of operation in response to placement of the device in a support stand, thereby enabling automatic operation as a stationary hands-free omni-directional projection scanner (in stand), and automatic operation as a portable hand-held line scanner (out of stand).

摘要翻译： 一种具有激光扫描引擎的手持式条形码符号读取装置，其被控制以选择性地以全方位扫描模式或单线扫描模式操作。 在单行扫描操作模式中，响应于由数据传输开关产生的激活信号，激光扫描引擎产生的符号字符数据被传送到主机设备。 在全向扫描模式中，符号字符数据被传送到主机设备，而与激活信号无关。 优选地，模式选择装置响应于将设备放置在支撑架中，以全向扫描操作模式或单线扫描操作模式选择性地操作激光扫描引擎，从而使得能够自动操作， 免费全方位投影扫描仪（支架）和自动操作作为便携式手持式线扫描仪（不支持）。

公开(公告)号：US06554189B1

公开(公告)日：2003-04-29

申请号：US09490483

申请日：2000-01-24

申请人： Timothy A. Good ,  Xiaoxun Zhu ,  David M. Wilz, Sr. ,  George B. Rockstein ,  Stephen J. Colavito ,  Robert E. Blake ,  Ka Man Au ,  Sankar Ghosh ,  George Kolis ,  Ian A. Scott ,  Thomas Amundsen ,  Gennady Germaine ,  Andrew D. Dehennis ,  LeRoy Dickson ,  Carl Harry Knowles

发明人： Timothy A. Good ,  Xiaoxun Zhu ,  David M. Wilz, Sr. ,  George B. Rockstein ,  Stephen J. Colavito ,  Robert E. Blake ,  Ka Man Au ,  Sankar Ghosh ,  George Kolis ,  Ian A. Scott ,  Thomas Amundsen ,  Gennady Germaine ,  Andrew D. Dehennis ,  LeRoy Dickson ,  Carl Harry Knowles

IPC分类号： G06K710

CPC分类号： G06K7/10851 ,  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 ,  G06K7/10861 ,  G06K7/10871 ,  G06K7/10881 ,  G06K7/10891 ,  G06K7/109 ,  G06K7/14 ,  G06K17/0022 ,  G06K2207/1013 ,  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 thereon. The mathematical 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.

公开(公告)号：US06209789B1

公开(公告)日：2001-04-03

申请号：US09436742

申请日：1999-11-09

申请人： Thomas Amundsen ,  Robert Blake ,  George Rockstein ,  David M. Wilz, Sr. ,  Carl H. Knowles

发明人： Thomas Amundsen ,  Robert Blake ,  George Rockstein ,  David M. Wilz, Sr. ,  Carl H. Knowles

IPC分类号： G06K710

CPC分类号： G06K7/10891 ,  G02B26/106 ,  G06K7/10564 ,  G06K7/10594 ,  G06K7/10603 ,  G06K7/10663 ,  G06K7/10693 ,  G06K7/10702 ,  G06K7/10792 ,  G06K7/10801 ,  G06K7/10851 ,  G06K7/10861 ,  G06K7/10881 ,  G06K7/14 ,  G06K7/1443 ,  G06K17/0022 ,  G06K2207/1012 ,  G06K2207/1016 ,  G06K2207/1017 ,  G06K2207/1018

摘要： A novel optical filtering system for a laser bar code scanner having narrow band-pass characteristics is disclosed. The optical filtering system has two different optical filtering elements which are disposed in a scanner housing in a spatially separate relationship. One of the optical filtering elements is positioned inside of the scanner housing in front of and close to the light detection element. The other optical filtering element is positioned in the light transmission aperture of the scanner housing and forms the scanning window. The optical filtering characteristics of the scanning window obscure the internal components of the scanner from plain view making the scanner appear more aesthetically pleasing. Together the optical filtering element cooperate to form a narrow-band pass filter to provide for better light collection and scanning.

摘要翻译： 公开了一种用于具有窄带通特性的激光条码扫描器的新型光学滤波系统。 光学滤波系统具有两个不同的光学滤波元件，其以空间上分离的关系设置在扫描仪外壳中。 光学滤波元件中的一个位于扫描器壳体的内部并且靠近光检测元件。 另一个光学滤光元件位于扫描器外壳的光传输孔中并形成扫描窗。 扫描窗口的光学滤波特性从平面视图遮蔽扫描仪的内部组件，使扫描仪看起来更美观。 光学滤波器组合在一起形成窄带通滤波器，以提供更好的光采集和扫描。

公开(公告)号：US07275693B2

公开(公告)日：2007-10-02

申请号：US11213727

申请日：2005-02-11

申请人： Timothy A. Good ,  Xiaoxun Zhu ,  David M. Wilz, Sr. ,  George B. Rockstein ,  Stephen J. Colavito ,  Robert E. Blake ,  Ka Man Au ,  Sankar Ghosh ,  George Kolis ,  Ian A. Scott ,  Thomas Amundsen ,  Gennady Germaine ,  Andrew D. Dehennis ,  LeRoy Dickson ,  Carl Harry Knowles

发明人： Timothy A. Good ,  Xiaoxun Zhu ,  David M. Wilz, Sr. ,  George B. Rockstein ,  Stephen J. Colavito ,  Robert E. Blake ,  Ka Man Au ,  Sankar Ghosh ,  George Kolis ,  Ian A. Scott ,  Thomas Amundsen ,  Gennady Germaine ,  Andrew D. Dehennis ,  LeRoy Dickson ,  Carl Harry Knowles

IPC分类号： G06K7/10 ,  G06K7/14

CPC分类号： G06K7/10851 ,  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 ,  G06K7/10861 ,  G06K7/10871 ,  G06K7/10881 ,  G06K7/10891 ,  G06K7/109 ,  G06K7/14 ,  G06K17/0022 ,  G06K2207/1013 ,  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 thereon. The mathematical 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。 数学模型是为了封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而实时创建的。 对数学模型进行分析，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。

公开(公告)号：US6029894A

公开(公告)日：2000-02-29

申请号：US258005

申请日：1999-02-26

申请人： Thomas Amundsen ,  Robert Blake ,  George Rockstein ,  David M. Wilz, Sr. ,  Carl H. Knowles

发明人： Thomas Amundsen ,  Robert Blake ,  George Rockstein ,  David M. Wilz, Sr. ,  Carl H. Knowles

IPC分类号： G02B26/10 ,  G06K7/10 ,  G06K7/14 ,  G06K17/00

CPC分类号： G06K7/10891 ,  G02B26/106 ,  G06K17/0022 ,  G06K7/10564 ,  G06K7/10594 ,  G06K7/10603 ,  G06K7/10663 ,  G06K7/10693 ,  G06K7/10702 ,  G06K7/10792 ,  G06K7/10801 ,  G06K7/10851 ,  G06K7/10861 ,  G06K7/10881 ,  G06K7/14 ,  G06K7/1443 ,  G06K2207/1012 ,  G06K2207/1016 ,  G06K2207/1017 ,  G06K2207/1018

摘要： A laser bar code symbol scanner employing a narrow band-pass optical filtering system of novel construction is disclosed. A first optical filtering element is installed in the light transmission aperture of a bar code scanner housing. A second optical filtering element is installed inside the scanner housing near the light detecting element. The first and second optical filtering elements have wavelength selective properties such that taken together they cooperate to form a narrow wavelength band-pass optical filtering system which allows only transmission of light at and around a certain predetermined wavelength into the photodetector element. The present invention also hides aesthetically unappealing electro-optical components mounted in the scanner housing from plain view and the optical filtering elements of the system can be easily and inexpensively manufactured without compromising the performance of the scanner.

摘要翻译： 公开了采用新颖结构的窄带通光学滤波系统的激光条码符号扫描仪。 第一光学过滤元件安装在条形码扫描器壳体的光传输孔中。 第二光学滤光元件安装在扫描器壳体内部，靠近光检测元件。 第一和第二光学滤波元件具有波长选择性，使得它们合在一起形成窄波长带通光学滤波系统，其仅允许在某一预定波长处和周围的光的透射进入光电检测器元件。 本发明还从平面的角度隐藏安装在扫描仪外壳中的美观的电光部件，并且可以容易且廉价地制造系统的光学滤光元件而不损害扫描仪的性能。