公开(公告)号：US5744815A

公开(公告)日：1998-04-28

申请号：US538971

申请日：1995-10-05

申请人： Vladimir Gurevich ,  Mark Krichever ,  Boris Metlitsky ,  Paul Dvorkis

发明人： Vladimir Gurevich ,  Mark Krichever ,  Boris Metlitsky ,  Paul Dvorkis

IPC分类号： G06K7/10 ,  G06K7/12

CPC分类号： G06K7/12 ,  G06K7/10564 ,  G06K7/10574 ,  G06K2207/1011

摘要： An optical reader for reading indicia such as bar codes comprises a first and second light source for generating first and second light beams of mutually orthogonal polarization orientations, and a polarized beam splitter for combining the beams without the effects of parallax or vignetting. One of the light sources is a short range light source and the other is a long range light source. The reader may be a scanner or a field of view reader. In addition, an optical reader is provided capable of reading all 2D symbologies comprising a flying spot laser scanner arrangement and a field of view reader. The respective laser sources generate light at different wavelengths and a dichroic filter is provided to allow either system to be used without parallax effects. The laser scanner beam can be used to aim the reader when carrying out field of view reading. An optical reader is further provided including a band-pass filter shaped to match the wave-front of light generated at a given location incident on the filter to reduce the band-pass bandwidth and hence the ambient noise. The shaped band-pass filter can be incorporated in the optical reader dichroic filter arrangement.

摘要翻译： 用于读取诸如条形码的标记的光学读取器包括用于产生相互正交的偏振取向的第一和第二光束的第一和第二光源，以及用于组合光束而不具有视差或渐晕效果的偏振分束器。 其中一个光源是短距离光源，另一个是远距离光源。 读取器可以是扫描仪或视野读取器。 此外，提供了能够读取包括飞点激光扫描器装置和视场读取器的所有2D符号的光学读取器。 相应的激光源产生不同波长的光，并且提供二向色滤光器以允许任何一个系统被使用而没有视差效应。 当执行视野读取时，激光扫描器光束可用于瞄准读取器。 还提供了一种光学读取器，其包括带通滤波器，其被成形为匹配在入射到滤波器上的给定位置处产生的光的波前，以减少带通带宽并因此降低环境噪声。 成形带通滤波器可以结合在光学读取器二向色滤光器装置中。

公开(公告)号：US5969323A

公开(公告)日：1999-10-19

申请号：US251521

申请日：1999-02-17

申请人： Vladimir Gurevich ,  Mark Krichever ,  Boris Metlitsky ,  Paul Dvorkis

发明人： Vladimir Gurevich ,  Mark Krichever ,  Boris Metlitsky ,  Paul Dvorkis

IPC分类号： G06K7/10 ,  G06K7/12

CPC分类号： G06K7/12 ,  G06K7/10564 ,  G06K7/10574 ,  G06K2207/1011

摘要： An optical reader for reading indicia such as bar codes comprises a first and second light source for generating first and second light beams of mutually orthogonal polarization orientations, and a polarized beam splitter for combining the beams without the effects of parallax or vignetting. One of the light sources is a short range light source and the other is a long range light source. The reader may be a scanner or a field of view reader. In addition, an optical reader is provided capable of reading all 2D symbologies comprising a flying spot laser scanner arrangement and a field of view reader. The respective laser sources generate light at different wavelengths and a dichroic filter is provided to allow either system to be used without parallax effects. The laser scanner beam can be used to aim the reader when carrying out field of view reading. An optical reader is further provided including a band-pass filter shaped to match the wave-front of light generated at a given location incident on the filter to reduce the band-pass bandwidth and hence the ambient noise. The shaped band-pass filter can be incorporated in the optical reader dichroic filter arrangement.

摘要翻译： 用于读取诸如条形码的标记的光学读取器包括用于产生相互正交的偏振取向的第一和第二光束的第一和第二光源，以及用于组合光束而不具有视差或渐晕效果的偏振分束器。 其中一个光源是短距离光源，另一个是远距离光源。 读取器可以是扫描仪或视野读取器。 此外，提供了能够读取包括飞点激光扫描器装置和视场读取器的所有2D符号的光学读取器。 相应的激光源产生不同波长的光，并且提供二向色滤光器以允许任何一个系统被使用而没有视差效应。 当执行视野读取时，激光扫描器光束可用于瞄准读取器。 还提供了一种光学读取器，其包括带通滤波器，其被成形为匹配在入射到滤波器上的给定位置处产生的光的波前，以减少带通带宽并因此降低环境噪声。 成形带通滤波器可以结合在光学读取器二向色滤光器装置中。

公开(公告)号：US5742038A

公开(公告)日：1998-04-21

申请号：US268982

申请日：1994-06-30

申请人： Paul Dvorkis ,  Edward Barkan ,  Boris Metlitsky

发明人： Paul Dvorkis ,  Edward Barkan ,  Boris Metlitsky

IPC分类号： G02B26/10 ,  G06K5/00 ,  G06K7/10 ,  G06K7/14 ,  G06K19/06 ,  H01S3/17 ,  H01S5/00

CPC分类号： G06K5/00 ,  G06K19/06028 ,  G06K7/10584 ,  G06K7/10594 ,  G06K7/10623 ,  G06K7/10801 ,  G06K7/10851 ,  G06K7/10881 ,  G06K7/14

摘要： An optical scanner such as a bar code scanner includes a laser diode to create the scanning laser beam. Laser diodes are characteristically astigmatic, and when passed through a rotationally symmetric lens the beam typically forms a waist both in the x (scanning) direction and in the y (perpendicular) direction. The width of the beam envelope in the x direction is adjusted by means of a conventional lens. The width of the beam envelope in the y direction is adjusted by the use of a non-planar mirror, preferably a cylindrical mirror, as the rotating or oscillating element.

摘要翻译： 诸如条形码扫描器的光学扫描仪包括用于产生扫描激光束的激光二极管。 激光二极管的特征是散光，当通过旋转对称透镜时，光束通常在x（扫描）方向和y（垂直）方向上形成腰部。 通过传统的透镜来调整光束包络线在x方向上的宽度。 通过使用非平面镜（优选圆柱形镜）作为旋转或振荡元件来调节光束包络线在y方向上的宽度。

公开(公告)号：US5902989A

公开(公告)日：1999-05-11

申请号：US969003

申请日：1997-11-12

申请人： Boris Metlitsky ,  Paul Dvorkis ,  Edward Barkan

发明人： Boris Metlitsky ,  Paul Dvorkis ,  Edward Barkan

IPC分类号： G06K7/10 ,  G06K7/14

CPC分类号： G06K7/10871 ,  G06K7/10554 ,  G06K7/10564 ,  G06K7/10584 ,  G06K7/10633 ,  G06K7/10643 ,  G06K7/10653 ,  G06K7/10673 ,  G06K7/10693 ,  G06K7/10811 ,  G06K7/10851 ,  G06K7/10881 ,  G06K7/10891 ,  G06K7/109 ,  G06K7/14 ,  G06K7/1478 ,  G06K2207/1011 ,  G06K2207/1016 ,  G06K2207/1018

摘要： An electro-optical reader reads indicia having parts of different light reflectivity within a limited working range of distances relative to the reader. The reader includes a laser for emitting a laser beam, a photosensor for detecting light over a field of view and generating an analog signal indicative of the indicium being read, and a scanning motor for scanning the laser beam and/or the field of view. A digitizer for digitizing the analog signal, a laser drive for energizing the laser, and a motor drive for activating the motor are all mounted on a single chip integrated circuit mounted within the reader.

摘要翻译： 电光读取器读取在相对于读取器的距离的有限工作范围内具有不同光反射率的部分的标记。 读取器包括用于发射激光束的激光器，用于在视场上检测光的光电传感器，并产生指示要读取的标记的模拟信号，以及用于扫描激光束和/或视野的扫描电机。 用于数字化模拟信号的数字化仪，用于激励激光器的激光驱动器和用于启动电动机的电动机驱动器都安装在安装在读取器内的单芯片集成电路上。

公开(公告)号：US5783813A

公开(公告)日：1998-07-21

申请号：US769937

申请日：1996-12-19

申请人： Boris Metlitsky ,  Paul Dvorkis ,  Edward Barkan

发明人： Boris Metlitsky ,  Paul Dvorkis ,  Edward Barkan

IPC分类号： G06K7/10 ,  G06K7/14

CPC分类号： G06K7/10871 ,  G06K7/10554 ,  G06K7/10564 ,  G06K7/10584 ,  G06K7/10633 ,  G06K7/10643 ,  G06K7/10653 ,  G06K7/10673 ,  G06K7/10693 ,  G06K7/10811 ,  G06K7/10851 ,  G06K7/10881 ,  G06K7/10891 ,  G06K7/109 ,  G06K7/14 ,  G06K7/1478 ,  G06K2207/1011 ,  G06K2207/1016 ,  G06K2207/1018

摘要： An electro-optical triggerless reader reads indicia having parts of different light reflectivity within a limited working range of distances relative to the reader. A light beam is focused to have its minimum beam cross-section, as considered along a scan direction, or waist situated within a housing for the reader, thereby enabling the reader to read indicia located adjacent the reader housing.

摘要翻译： 电光无触发读取器读取在相对于读取器的距离的有限工作范围内具有不同光反射率的部分的标记。 光束被聚焦成具有沿着扫描方向考虑的最小光束横截面或位于用于读取器的壳体内的腰部，从而使读取器能够读取位于读取器壳体附近的标记。

公开(公告)号：US06616046B1

公开(公告)日：2003-09-09

申请号：US09568342

申请日：2000-05-10

申请人： Edward Barkan ,  Paul Dvorkis ,  Howard Shepard ,  Miklos Stern ,  Chinh Tan

发明人： Edward Barkan ,  Paul Dvorkis ,  Howard Shepard ,  Miklos Stern ,  Chinh Tan

IPC分类号： G06K710

CPC分类号： G06K7/10851 ,  G06K7/10643 ,  G06K7/1098 ,  G06K7/1417

摘要： Various techniques for reducing the size of bar code scanner modules are disclosed including embodiments having miniature moving mirror elements employing spiral tape springs and micro machined structures. Other embodiments employ VCSELs and relatively small collection areas, while minimizing speckle noise through beam shaping and signal processing techniques.

摘要翻译： 公开了用于减小条形码扫描器模块尺寸的各种技术，包括采用螺旋带弹簧和微加工结构的微型移动镜元件的实施例。 其他实施例采用VCSEL和相对小的收集区域，同时通过光束整形和信号处理技术最小化斑点噪声。

公开(公告)号：US07367510B2

公开(公告)日：2008-05-06

申请号：US11593215

申请日：2006-11-06

申请人： Yajun Li ,  Paul Dvorkis ,  Dmitriy Yavid ,  Frederick F. Wood ,  Miklos Stern ,  Edward Barkan ,  Narayan Nambudri

发明人： Yajun Li ,  Paul Dvorkis ,  Dmitriy Yavid ,  Frederick F. Wood ,  Miklos Stern ,  Edward Barkan ,  Narayan Nambudri

IPC分类号： G06K7/10

CPC分类号： G06K7/10702 ,  G06K7/10683

摘要： An arrangement for determining light beam position in an electro-optical reader, image projector and like devices includes a drive for moving a scanning light beam at a scan frequency across a target as a scan line, and an electro-optical feedback assembly operatively connected to the drive, for optically detecting scan line position during beam movement, and for generating a feedback signal at the scan frequency, the feedback signal being indicative of the scan line position. A feedback coil in the drive is eliminated to avoid electromagnetic coupling between multiple coils in the drive.

摘要翻译： 用于确定电光读取器，图像投影仪等装置中的光束位置的装置包括用于以扫描线跨扫描频率移动扫描光束的驱动器，以及电光反馈组件，其可操作地连接到 驱动器，用于在光束移动期间光学检测扫描线位置，并且用于在扫描频率处产生反馈信号，反馈信号指示扫描线位置。 消除驱动器中的反馈线圈，以避免驱动器中多个线圈之间的电磁耦合。

公开(公告)号：US07182263B2

公开(公告)日：2007-02-27

申请号：US10956693

申请日：2004-09-30

申请人： Yajun Li ,  Paul Dvorkis ,  Dmitriy Yavid ,  Frederick F. Wood ,  Miklos Stern ,  Edward Barkan ,  Narayan Nambudri

发明人： Yajun Li ,  Paul Dvorkis ,  Dmitriy Yavid ,  Frederick F. Wood ,  Miklos Stern ,  Edward Barkan ,  Narayan Nambudri

IPC分类号： G06K7/10

CPC分类号： G06K7/10702 ,  G06K7/10683

摘要： An arrangement for determining light beam position in an electro-optical reader, image projector and like devices includes a drive for moving a scanning light beam at a scan frequency across a target as a scan line, and an electro-optical feedback assembly operatively connected to the drive, for optically detecting scan line position during beam movement, and for generating a feedback signal at the scan frequency, the feedback signal being indicative of the scan line position. A feedback coil in the drive is eliminated to avoid electromagnetic coupling between multiple coils in the drive.

公开(公告)号：US20060065735A1

公开(公告)日：2006-03-30

申请号：US10956693

申请日：2004-09-30

申请人： Yajun Li ,  Paul Dvorkis ,  Dmitriy Yavid ,  Frederick Wood ,  Miklos Stern ,  Edward Barkan ,  Narayan Nambudri

发明人： Yajun Li ,  Paul Dvorkis ,  Dmitriy Yavid ,  Frederick Wood ,  Miklos Stern ,  Edward Barkan ,  Narayan Nambudri

IPC分类号： G06K7/10

CPC分类号： G06K7/10702 ,  G06K7/10683

摘要： An arrangement for determining light beam position in an electro-optical reader, image projector and like devices includes a drive for moving a scanning light beam at a scan frequency across a target as a scan line, and an electro-optical feedback assembly operatively connected to the drive, for optically detecting scan line position during beam movement, and for generating a feedback signal at the scan frequency, the feedback signal being indicative of the scan line position. A feedback coil in the drive is eliminated to avoid electromagnetic coupling between multiple coils in the drive.

摘要翻译： 用于确定电光读取器，图像投影仪等装置中的光束位置的装置包括用于以扫描线跨扫描频率移动扫描光束的驱动器，以及电光反馈组件，其可操作地连接到 驱动器，用于在光束移动期间光学检测扫描线位置，并且用于在扫描频率处产生反馈信号，反馈信号指示扫描线位置。 消除驱动器中的反馈线圈，以避免驱动器中多个线圈之间的电磁耦合。

公开(公告)号：US20070181688A1

公开(公告)日：2007-08-09

申请号：US11593215

申请日：2006-11-06

申请人： Yajun Li ,  Paul Dvorkis ,  Dmitriy Yavid ,  Frederick Wood ,  Miklos Stern ,  Edward Barkan ,  Narayan Nambudri

发明人： Yajun Li ,  Paul Dvorkis ,  Dmitriy Yavid ,  Frederick Wood ,  Miklos Stern ,  Edward Barkan ,  Narayan Nambudri

IPC分类号： G06K7/10

CPC分类号： G06K7/10702 ,  G06K7/10683

摘要： An arrangement for determining light beam position in an electro-optical reader, image projector and like devices includes a drive for moving a scanning light beam at a scan frequency across a target as a scan line, and an electro-optical feedback assembly operatively connected to the drive, for optically detecting scan line position during beam movement, and for generating a feedback signal at the scan frequency, the feedback signal being indicative of the scan line position. A feedback coil in the drive is eliminated to avoid electromagnetic coupling between multiple coils in the drive.

摘要翻译： 用于确定电光读取器，图像投影仪等装置中的光束位置的装置包括用于以扫描线跨扫描频率移动扫描光束的驱动器，以及电光反馈组件，其可操作地连接到 驱动器，用于在光束移动期间光学检测扫描线位置，并且用于在扫描频率处产生反馈信号，反馈信号指示扫描线位置。 消除驱动器中的反馈线圈，以避免驱动器中多个线圈之间的电磁耦合。