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    Moving beam and field of view readers with dichroic filter
    3.
    发明授权
    Moving beam and field of view readers with dichroic filter 失效
    移动光束和视野读取器与二向色滤光片

    公开(公告)号：US5912451A

    公开(公告)日：1999-06-15

    申请号：US969004

    申请日：1997-11-12

    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 laser beams. The respective laser sources generate light at different wavelengths and a dichroic filter is provided to allow either source to be used without parallax effects. The laser scanner beam can be used to aim the reader when carrying out field of view reading. The optical reader is further provided with 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第一和第二激光束的第一和第二光源。 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使用任何光源而没有视差效应。 当执行视野读取时，激光扫描器光束可用于瞄准读取器。 光学读取器还设置有带通滤波器，其形状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。

    Beam splitting optics in bar code readers
    4.
    发明授权
    Beam splitting optics in bar code readers 失效
    光束分离光学条形码阅读器

    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。

    Optical collector for improving sensor signal uniformity over a target scan
    5.
    发明授权
    Optical collector for improving sensor signal uniformity over a target scan 有权
    用于提高目标扫描传感器信号均匀性的光收发器

    公开(公告)号：US06820810B2

    公开(公告)日：2004-11-23

    申请号：US10287343

    申请日：2002-11-04

    申请人： Igor Vinogradov ,  Mark Krichever ,  David Tsi Shi ,  Vladimir Gurevich

    发明人： Igor Vinogradov ,  Mark Krichever ,  David Tsi Shi ,  Vladimir Gurevich

    IPC分类号： G06K710

    CPC分类号： G06K7/10702

    摘要： An optical collector collects relatively more of the off-axis light directed to a detector, and collects relatively less of the on-axis light directed to the detector, in order to decrease the variation in the amplitude of the electrical signal generated by the detector over a scan of target such as a bar code symbol in order to improve the performance of a bar code symbol reader.

    摘要翻译： 光学收集器收集指向检测器的相对较多的离轴光，并且收集相对较少的指向检测器的轴上光，以便减少由检测器产生的电信号的振幅的变化 对诸如条形码符号的目标进行扫描，以便改善条形码符号读取器的性能。

    Noise-reduced electro-optical readers with optical bandpass filter
    8.
    发明授权
    Noise-reduced electro-optical readers with optical bandpass filter 失效
    具有光带通滤波器的降噪电光读取器

    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。

    Axial chromatic aberration auto-focusing system and method
    9.
    发明授权
    Axial chromatic aberration auto-focusing system and method 有权
    轴向色差自动对焦系统及方法

    公开(公告)号：US07478754B2

    公开(公告)日：2009-01-20

    申请号：US10648176

    申请日：2003-08-25

    申请人： Vladimir Gurevich ,  Mark Krichever ,  Bradley S. Carlson ,  Chinh Tan

    发明人： Vladimir Gurevich ,  Mark Krichever ,  Bradley S. Carlson ,  Chinh Tan

    IPC分类号： G03B7/08

    CPC分类号： G06K7/10811

    摘要： A system and method utilizing the principles of axial chromatic aberration for auto-focusing an image onto an image sensor are provided. The system and method are particularly suitable for incorporation within an optical code reader. A signal processor analyzes data signals representative of the intensity or magnitude of wavelength components of an impinged image onto the image sensor for determining a value indicative of the focus quality of the impinged image. An actuator controls movement of a lens in accordance with the determination until obtainment of a desired focus quality. A decoder decodes the image having the desired focus quality.

    摘要翻译： 提供了利用轴向色差原理将图像自动聚焦到图像传感器上的系统和方法。 该系统和方法特别适用于并入光学代码阅读器。 信号处理器将表示入射图像的波长分量的强度或幅度的数据信号分析到图像传感器上，以确定表示冲击图像的聚焦质量的值。 执行器根据确定控制透镜的移动，直到获得期望的聚焦质量。 解码器对具有所需焦点质量的图像进行解码。