公开(公告)号：US5796089A

公开(公告)日：1998-08-18

申请号：US531498

申请日：1995-09-21

申请人： Emanuel Marom

发明人： Emanuel Marom

IPC分类号： G06K7/10

CPC分类号： G06K7/1417 ,  G06K7/10722 ,  G06K7/10811

摘要： A bar code scanner for reading a bar code tag includes a collection optical system, a two dimensional array of detectors, rotating means for imparting rotational movement to the array and displacement means for varying the position of one of the collection optical system and the array along an optical axis of the collection optical system.

摘要翻译： 用于读取条形码标签的条形码扫描器包括收集光学系统，检测器的二维阵列，用于向阵列施加旋转运动的旋转装置和用于改变收集光学系统和阵列之一的位置的位移装置 收集光学系统的光轴。

公开(公告)号：US5712470A

公开(公告)日：1998-01-27

申请号：US458880

申请日：1995-06-02

申请人： Joseph Katz ,  Boris Metlitsky ,  Emanuel Marom

发明人： Joseph Katz ,  Boris Metlitsky ,  Emanuel Marom

IPC分类号： G06K7/10 ,  G06K7/14

CPC分类号： G06K7/1473 ,  G06K7/10574 ,  G06K7/10673 ,  G06K7/10702 ,  G06K7/14 ,  G06K7/1417

摘要： A bar code scanner and method for scanning a bar code symbol that splits a light beam using a liquid crystal device and directs the split light beams toward a bar code symbol using a moveable mirror. The light reflected by the symbol from each of the split light beams is added summed and converted to an electrical signal indicative of the bar code symbol. The electrical signal is processed to decode the bar code symbol and, if the decoding is unsucessful, the liquid crystal device is changed to affect the number of split light beams incident on the bar code symbol.

摘要翻译： 一种条形码扫描器和方法，用于扫描使用液晶装置分割光束的条形码符号，并使用可移动反射镜将分束光束引向条形码符号。 将来自每个分离光束的符号反射的光相加并相加并转换成指示条形码符号的电信号。 处理电信号以解码条形码符号，并且如果解码不成功，则改变液晶装置以影响入射在条形码符号上的分束光束的数量。

公开(公告)号：US5663549A

公开(公告)日：1997-09-02

申请号：US459467

申请日：1995-06-02

申请人： Joseph Katz ,  Boris Metlitsky ,  Emanuel Marom

发明人： Joseph Katz ,  Boris Metlitsky ,  Emanuel Marom

IPC分类号： G06K7/10 ,  G06K7/14

CPC分类号： G06K7/1473 ,  G06K7/10574 ,  G06K7/10673 ,  G06K7/10702 ,  G06K7/14 ,  G06K7/1417

摘要： A bar code scanner employs an electronic means for causing the light beam to scan a bar code symbol, rather than using a mechanical device to generate the scan. A linear array of light sources, activated one at a time in a regular sequence, may be imaged upon the bar code symbol to simulate a scanned beam. Instead of a single linear array of light sources, a multiple-line array may be employed, producing multiple scan lines. The multiple scan lines may be activated in sequence, or activated simultaneously (time-division or frequency-division multiplexed. The multiple scan lines can provide signal enhancement, noise reduction or fault correction if directed to the same bar code pattern. Multiple scan lines may be generated using a single light source and a beam splitter, with mechanical scanning, as well as by the sequentially-activated light sources. Multiple simultaneous scan lines may be employed to generate a raster scan at lower mechanical scan frequency. In another embodiment, a tunable laser may be employed to provide a scan without moving parts; a laser beam from the tunable laser is reflected from a diffraction grating that produces an angular deviation dependent upon the wavelength of the laser output. As the frequency of the tunable laser is varied in some selected pattern, the laser beam will scan accordingly.

摘要翻译： 条形码扫描仪采用电子装置，用于使光束扫描条形码符号，而不是使用机械装置来产生扫描。 可以在条形码符号上成像一个以规则顺序一次激活的光源的线性阵列，以模拟扫描光束。 代替光源的单个线性阵列，可以采用多行阵列，产生多条扫描线。 多个扫描线可以被顺序激活或同时激活（时分或频分复用，多个扫描线可以提供信号增强，降噪或故障校正，如果指向相同的条形码图案，多个扫描线可以 使用单个光源和分束器，通过机械扫描以及由顺序激活的光源产生多个同时扫描线可以以较低的机械扫描频率产生光栅扫描，在另一个实施例中， 可调谐激光器可用于提供无移动部件的扫描;来自可调谐激光器的激光束从衍射光栅反射，该衍射光栅产生取决于激光输出波长的角度偏差，因为可调激光器的频率在 一些选定的图案，激光束将相应扫描。

公开(公告)号：US5331143A

公开(公告)日：1994-07-19

申请号：US936472

申请日：1992-08-28

申请人： Emanuel Marom ,  Joseph Katz

发明人： Emanuel Marom ,  Joseph Katz

IPC分类号： G06K7/015 ,  G06K7/10

CPC分类号： G06K7/10811 ,  G06K2207/1013

摘要： The use of linear axicons or similar optical elements in a bar code scanner produces a scanning spot of a size correlated generally with dimensions of features of the scanned information, wherein the spot size remains substantially constant for varying distances between the scanner and the symbol over a substantial range of distances. Optical elements of this type produce a diffraction pattern comprising a central lobe and a number of rings surrounding the central lobe. An aperture is provided to limit the beam and thus the number of rings in the pattern which actually reach the symbol during scanning. The extent of the limited beam and the phase front tilt angle produced by the optical element are chosen to produce a desired resolution, which relates to the density of symbols the scanner is to read, and to produce a desired working range. The invention also provides a modular light emitting device including a universal light emitting module and an optical assembly, including the axicon and aperture, mounted on the module to adapt the optical characteristics of light from the module to conform to the requirements of a particular scanning application.

摘要翻译： 在条形码扫描仪中使用线性轴或相似的光学元件产生与扫描信息的特征的尺寸大体相关联的尺寸的扫描点，其中斑点尺寸保持基本上恒定，用于在扫描仪和符号之间的距离变化 相当的距离范围。 这种类型的光学元件产生衍射图案，该衍射图案包括中央凸起部分和围绕中央凸起部分的多个环形体。 提供孔径以限制光束，并因此限制扫描期间实际到达符号的图案中的环的数量。 选择由光学元件产生的有限光束的范围和相位前倾斜角度以产生期望的分辨率，其涉及扫描仪要读取的符号的密度，并产生所需的工作范围。 本发明还提供一种模块化发光装置，其包括通用发光模块和光学组件，其包括安装在模块上的轴向和孔径，以适应来自模块的光的光学特性以符合特定扫描应用的要求 。

公开(公告)号：US5258605A

公开(公告)日：1993-11-02

申请号：US864367

申请日：1992-04-06

申请人： Boris Metlitsky ,  Joseph Katz ,  Dean Gousgounis ,  Emanuel Marom

发明人： Boris Metlitsky ,  Joseph Katz ,  Dean Gousgounis ,  Emanuel Marom

IPC分类号： G06K7/10 ,  G06K7/14 ,  G06K9/22

CPC分类号： G06K7/1473 ,  G06K7/10574 ,  G06K7/10673 ,  G06K7/10702 ,  G06K7/14 ,  G06K7/1417

摘要： A bar code scanner employs an electronic means for causing the light beam to scan a bar code symbol, rather than using a mechanical device to generate the scan. A linear array of light sources, activated one at a time in a regular sequence, may be imaged upon the bar code symbol to simulate a scanned beam. Instead of a single linear array of light sources, a multiple-line array may be employed, producing multiple scan lines. The multiple scan lines may be activated in sequence, or activated simultaneously (time-division or frequency-division multiplexed. The multiple scan lines can provide signal enhancement, noise reduction or fault correction if directed to the same bar code pattern. Multiple scan lines may be generated using a single light source and a beam splitter, with mechanical scanning, as well as by the sequentially-activated light suorces. Multiple simultaneous scan lines may be employed to generate a raster scan at lower mechanical scan frequency. In another embodiment, a tunable laser may be employed to provide a scan without moving parts; a laser beam from the tunable laser is reflected from a diffraction grating that produces an angular deviation dependent upon the wavelength of the laser output. As the frequency of the tunable laser is varied in some selected pattern, the laser beam will scan accordingly.

摘要翻译： 条形码扫描仪采用电子装置，用于使光束扫描条形码符号，而不是使用机械装置来产生扫描。 可以在条形码符号上成像一个以规则顺序一次激活的光源的线性阵列，以模拟扫描光束。 代替光源的单个线性阵列，可以采用多行阵列，产生多条扫描线。 多个扫描线可以被顺序激活或同时激活（时分或频分复用，多个扫描线可以提供信号增强，降噪或故障校正，如果指向相同的条形码图案，多个扫描线可以 使用单个光源和分束器，通过机械扫描以及顺序激活的光源产生多个同时扫描线可以以较低的机械扫描频率产生光栅扫描，在另一个实施例中， 可调谐激光器可用于提供无移动部件的扫描;来自可调谐激光器的激光束从衍射光栅反射，该衍射光栅产生取决于激光输出波长的角度偏差，因为可调激光器的频率在 一些选定的图案，激光束将相应扫描。

公开(公告)号：US4124278A

公开(公告)日：1978-11-07

申请号：US808941

申请日：1977-06-22

申请人： Jan Grinberg ,  Emanuel Marom

发明人： Jan Grinberg ,  Emanuel Marom

IPC分类号： G02F1/135 ,  G06E3/00 ,  G02F1/13

CPC分类号： G02F1/135 ,  G06E3/001

摘要： There is disclosed a system capable of subtracting in real time the intensities of two incoherently illuminated scenes and providing the sign of the subtracted information. The system utilizes two birefringent devices such as liquid crystal light valves, onto which the two images to be subtracted are projected. One valve is analyzed in between crossed polarizers, or equivalent, while the other one is in between parallel polarizers or equivalent. Both polarizer arrangements, for example, may be implemented with a polarizing beam splitter and a quarter wave plate. The common output image plane, onto which both images are superposed, displays an intensity proportional to the difference between the two inputs. This intensity "rides" on a constant background intensity thus displaying the difference signal as well as its polarity. The read-in and read-out beams could be coherent as well as incoherent, the latter being more desirable due to its speckle-free image. No other system is presently known which can perform incoherent subtraction. Experimental results obtained with incoherent illumination are given.

摘要翻译： 公开了一种能够实时减去两个非相干照明场景的强度并提供相减信息的符号的系统。 该系统利用两个双折射装置，例如液晶光阀，将要减去的两个图像投影到该双折射装置上。 在正交偏振器或等效物之间分析一个阀门，而另一个阀门位于平行偏振器或等效物之间。 例如，两个偏振器配置可以用偏振分束器和四分之一波片来实现。 两个图像叠加在其上的公共输出图像平面显示与两个输入之间的差成比例的强度。 该强度在恒定的背景强度上“骑”，从而显示差分信号及其极性。 读入和读出的光束可以是一致的和非相干的，后者由于其无斑点的图像而更加期望。 目前尚不知道可以执行非相干减法的其他系统。 给出了使用非相干照明获得的实验结果。

公开(公告)号：US5912450A

公开(公告)日：1999-06-15

申请号：US864452

申请日：1997-05-28

申请人： Joseph Katz ,  Boris Metlitsky ,  Emanuel Marom

发明人： Joseph Katz ,  Boris Metlitsky ,  Emanuel Marom

IPC分类号： G06K7/10 ,  G06K7/14

CPC分类号： G06K7/1473 ,  G06K7/10574 ,  G06K7/10673 ,  G06K7/10702 ,  G06K7/14 ,  G06K7/1417

摘要： A bar code reader and method of reading a bar code symbol successively generates scan patterns at different times on the symbol. Preferably, two light sources are alternately energized to alternately produce two scan lines across the symbol. Each scan line reflects light from the symbol. The reflected light is detected by a photodetector which, in turn, generates an electrical signal. This signal is decoded into data corresponding to the symbol.

摘要翻译： 条形码读取器和读取条形码符号的方法在符号上的不同时间连续地生成扫描图案。 优选地，两个光源交替地通电以交替地跨越符号产生两条扫描线。 每个扫描线反映符号的光。 反射光由光电检测器检测，光电检测器又产生电信号。 该信号被解码成对应于符号的数据。

公开(公告)号：US5555130A

公开(公告)日：1996-09-10

申请号：US469228

申请日：1995-06-06

申请人： Emanuel Marom ,  Joseph Katz ,  Edward Barkan

发明人： Emanuel Marom ,  Joseph Katz ,  Edward Barkan

IPC分类号： G02B26/10 ,  G06K7/10 ,  G02B5/18 ,  G02B5/32 ,  G02B27/44

CPC分类号： G02B26/106 ,  G06K7/10663

摘要： A holographic grating element is provided which enables tracing different scan lines. The element is divided into a plurality of sectors. A first grating pattern is provided which diffracts a beam in one direction, and a second grating pattern is next to the first and diffracts the scan beam in the reverse direction. Sectors can be produced with different sector sizes to enable scanning at different rates in the reverse direction, or in successive scans in the same direction. Angle relationships are described to produce diffraction patterns for a desired relationship between disc rotation and the angle of the scan line.

公开(公告)号：US5306899A

公开(公告)日：1994-04-26

申请号：US897761

申请日：1992-06-12

申请人： Emanuel Marom ,  Joseph Katz

发明人： Emanuel Marom ,  Joseph Katz

IPC分类号： G06K7/10 ,  G06K19/16 ,  G07F7/08 ,  G07F7/12 ,  G06K5/00

CPC分类号： G07F7/08 ,  G06K19/16 ,  G06K7/1092 ,  G07F7/086 ,  G07F7/125

摘要： In order to improve security for holographic labels which are positioned on a substrate base, a bar code symbol is holographically recorded on the base such as a credit card, a label, or a container for a product. A reading apparatus (e.g., a bar code reader) directs light at the holographic bar code symbol and detects the reflected optical information with a detector such as a CCD array. The reading apparatus can be a stand-alone device or, in the case of a credit card, can be incorporated into a conventional swiper for reading magnetic information on a strip on the card. A non-holographic bar code symbol can also be provided on or near a holographic display element, e.g., a rainbow hologram. The bar code can be positioned adjacent the display, or placed in a window within the display, or etched or embossed on the display. A system is also provided for authenticating a holographic display on an information card such as a credit card. A display is illuminated and a reflected beam directed at a holographic record which was previously produced from a signal, known to be authentic, and a reference. The reflected beam is used to reconstruct a reference beam. A sensor receives the reconstructed reference and it is then determined if the display is authentic.

摘要翻译： 为了提高定位在基板基底上的全息标签的安全性，将条形码符号全息地记录在基座上，例如信用卡，标签或产品的容器。 读取装置（例如，条形码阅读器）将光引导到全息条形码符号，并用诸如CCD阵列的检测器检测反射的光学信息。 读取装置可以是独立装置，或者在信用卡的情况下，可以并入到用于读取卡上的条带上的磁信息的常规的卡片中。 也可以在全息显示元件上或附近提供非全息条形码符号，例如彩虹全息图。 条形码可以定位在显示器附近，或者放置在显示器内的窗口中，或者蚀刻或压印在显示器上。 还提供了一种用于在诸如信用卡的信息卡上认证全息显示的系统。 照明的显示器和指向全息记录的反射光束，其先前由已知是真实的信号产生，并且是参考。 反射光束用于重构参考光束。 传感器接收重建的参考，然后确定显示器是否可信。

公开(公告)号：US5196683A

公开(公告)日：1993-03-23

申请号：US681601

申请日：1991-04-08

申请人： Emanuel Marom ,  Joseph Katz

发明人： Emanuel Marom ,  Joseph Katz

IPC分类号： G06K9/74

CPC分类号： G06K9/74

摘要： A bar code detector or acquisition arrangement for detecting the presence and location of a bar code pattern in a field of view. The bar code pattern detector is not designed to decode a bar code pattern, but merely to be sensitive to and detect the presence of a bar code pattern or patterns so that a conventional bar code scanner can then be activated to perform a decoding operation thereon. The present invention is based upon the generation of Moire patterns, and includes an electro-optic system for detecting and locating a bar code pattern in which an image of a field of view is projected onto a reference bar code pattern or an image thereof while producing relative rotation between the image of the field of view and the reference bar code pattern or image thereof. An optical detector detects the optical interaction of the image of the field of view with the reference bar code pattern or image thereof, including any Moire patterns generated thereby. A processor is coupled to the output of the optical detector for detecting the generation of any such Moire patterns, which are indicative of the presence and location of a bar code pattern or patterns in the field of view.

摘要翻译： 一种条形码检测器或采集装置，用于检测视场中条形码图案的存在和位置。 条形码图案检测器不被设计为对条形码图案进行解码，而仅仅是对条形码图案或图案的敏感性和检测条件图案或图案的存在，从而可以激活传统的条形码扫描器来对其进行解码操作。 本发明基于莫尔图案的产生，并且包括用于检测和定位条形码图案的电光系统，其中将视野的图像投影到参考条形码图案或其图像上，同时产生 视场图像与参考条码图案或其图像之间的相对旋转。 光学检测器检测视场图像与参考条形码图案或其图像的光学相互作用，包括由此产生的任何莫尔图案。 处理器耦合到光学检测器的输出，用于检测任何这样的莫尔图案的产生，这些莫尔图案指示条形码图案或图案在视野中的存在和位置。