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1. 发明授权

US06633433B2 Beam shaping for optical scanners 有权
标题翻译：光学扫描仪的光束成形
公开(公告)号：US06633433B2
公开(公告)日：2003-10-14
申请号：US09867399
申请日：2001-05-31
申请人： Leonard Bergstein , Emanuel Marom , Yajun Li , Joseph Katz
发明人： Leonard Bergstein , Emanuel Marom , Yajun Li , Joseph Katz
IPC分类号： G02B2742
CPC分类号： G06K7/10801 , G06K7/10702 , Y10S359/90
摘要： A beam generator, or beam shaping system, for example for use in an optical scanner, creates a non-Gaussian beam which provides improved indicia-reading characteristics. In one embodiment, diffractive optical elements are used to create a Bessel-Gaussian scanning beam, which comprises a coherent combination of a Gaussian beam and a Bessel beam.
摘要翻译：例如用于光学扫描仪的光束发生器或光束成形系统产生提供改进的标记读取特性的非高斯光束。在一个实施例中，衍射光学元件用于产生贝塞尔 - 高斯扫描光束，其包括高斯光束和贝塞尔光束的相干组合。

2. 发明授权

US5504595A Holographic scanning 失效
标题翻译：全息扫描
公开(公告)号：US5504595A
公开(公告)日：1996-04-02
申请号：US225350
申请日：1994-04-08
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.
摘要翻译：提供了一种能够跟踪不同扫描线的全息光栅元件。该元件被分成多个扇区。提供了在一个方向上衍射光束的第一光栅图案，并且第二光栅图案与第一光栅图案相邻，并沿相反方向衍射扫描光束。扇区可以生产不同的扇区大小，以便能够以相反方向以不同速率进行扫描，也可以在相同方向上进行连续扫描。描述角度关系以产生用于盘旋转和扫描线的角度之间期望关系的衍射图案。

3. 发明授权

US06247648B1 Bar code scanner utilizing multiple light beams output by a light beam splitter 有权
标题翻译：条形码扫描器利用由光束分离器输出的多个光束
公开(公告)号：US06247648B1
公开(公告)日：2001-06-19
申请号：US09301633
申请日：1999-04-29
申请人： Joseph Katz , Boris Metlitsky , Emanuel Marom
发明人： Joseph Katz , Boris Metlitsky , Emanuel Marom
IPC分类号： G06K710
CPC分类号： G06K7/10831
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 summed and converted to an electrical signal indicative of the bar code symbol. The electrical signal is processed to decode the bar code symbol, but, if decoding is unsuccessful, 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。从每个分束光束的符号反射的光被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，但是如果解码不成功，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。

4. 发明授权

US5545886A Barcode scanner using an array of light emitting elements which are selectively activated 失效
标题翻译：条形码扫描器，其使用选择性地激活的发光元件阵列
公开(公告)号：US5545886A
公开(公告)日：1996-08-13
申请号：US98991
申请日：1993-07-29
申请人： Boris Metlitsky , Joseph Katz , Emanuel Marom , Dean Gousgounis
发明人： Boris Metlitsky , Joseph Katz , Emanuel Marom , Dean Gousgounis
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。

5. 发明授权

US5712470A Bar code scanner utilizing multiple light beams output by a light beam splitter 失效
标题翻译：条形码扫描器利用由光束分离器输出的多个光束
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。

6. 发明授权

US5663549A System for reading a symbol by activitating a liquid crystal device to control a scanning path 失效
标题翻译：通过激活液晶装置来控制扫描路径来读取符号的系统
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。

7. 发明授权

US5331143A Optical scanner using an axicon and an aperture to aspherically form the scanning beam 失效
标题翻译：光学扫描仪使用旋转三棱镜和光圈以非球面形成扫描光束
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。

8. 发明授权

US5258605A Scan generators for bar code reader using linear array of lasers 失效
标题翻译：使用激光线阵列的条形码阅读器的扫描发生器
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。

9. 发明授权

US5912450A Bar code scanner utilizing time-multiplexed scan lines 失效
标题翻译：条码扫描器利用时间复用的扫描线
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。

10. 发明授权

US5555130A Holographic scanning 失效
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.

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