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    Symbology imaging and reading apparatus and method
    1.
    发明授权
    Symbology imaging and reading apparatus and method 失效
    符号学成像和阅读设备及方法

    公开(公告)号：US06283374B1

    公开(公告)日：2001-09-04

    申请号：US09151766

    申请日：1998-09-11

    申请人： Stephen D. Fantone ,  David A. Imrie ,  William T. Plummer ,  Jon E. Van Tassell ,  Philip E. McKinley ,  Harry R. McKinley ,  Luis A. Figarella ,  Howard Stern ,  John H. Dowling ,  Steve Meister

    发明人： Stephen D. Fantone ,  David A. Imrie ,  William T. Plummer ,  Jon E. Van Tassell ,  Philip E. McKinley ,  Harry R. McKinley ,  Luis A. Figarella ,  Howard Stern ,  John H. Dowling ,  Steve Meister

    IPC分类号： G06K710

    CPC分类号： G06K7/10742 ,  G06K7/10722 ,  G06K7/10732 ,  G06K7/10811 ,  G06K7/10881

    摘要： Diffuse “dark field” illumination and “bright field” illumination are each provided for a hand-held encoded symbology imager/reader; to be projected therefrom upon symbology disposed on a target (component part, goods, package, etc.). The imager/reader is encased in a housing ergonomically configured to be griped in more then one manner and to thus facilitate holding the imager/reader steady. The symbology to be imaged is targeted by a line that not only spots the symbology, but by extending a length commensurate with that of the symbology, indicates that the symbology is in the field of view of the imager/reader. A CCD, disposed to receive light reflected from the symbology, has its readout controlled so that only selected portions of the CCD need be analyzed for illumination and focusing purposes. To optimize imaging and decoding time, and to optimize use of power, readout from some portions of the CCD is accomplished in relatively rapid time by speeding up the readout of the CCD in some of its active area; while reverting back to a slower readout for data to be analyzed for illumination and focusing control and decoding purposes. In addition, special application of entropy principles facilitate determining the optimum focus and illumination conditions for the imager/reader.

    摘要翻译： 漫射“暗场”照明和“亮场”照明分别为手持编码的符号系统成像仪/阅读器提供; 从配置在目标上的符号系统（部件，商品，包装等）投射出来。 成像器/读取器被封装在符合人体工程学的外壳中，以便以一种方式被夹持，从而有利于保持成像器/读取器的稳定。 要成像的符号系统的目标是一条线，不仅可以识别符号系统，而且通过扩展与符号系统相匹配的长度，表示符号系统在成像器/读取器的视野中。 设置为接收从符号系统反射的光的CCD具有其读出控制，使得仅需要分析CCD的所选部分以进行照明和聚焦。 为了优化成像和解码时间，并且优化功率的使用，通过在其一些有效区域中加速CCD的读出，在相对较快的时间内从CCD的一些部分读出; 同时还原为较慢的读数，以供分析用于照明和聚焦控制和解码目的的数据。 此外，熵原理的特殊应用有助于确定成像器/读取器的最佳聚焦和照明条件。

    Variable focus optical system
    2.
    发明授权
    Variable focus optical system 失效
    可变焦光学系统

    公开(公告)号：US6066857A

    公开(公告)日：2000-05-23

    申请号：US151496

    申请日：1998-09-11

    申请人： Stephen D. Fantone ,  Luis A. Figarella ,  David A Imrie ,  Harry McKinley ,  William T. Plummer ,  Howard Stern ,  Jon E. Van Tassell

    发明人： Stephen D. Fantone ,  Luis A. Figarella ,  David A Imrie ,  Harry McKinley ,  William T. Plummer ,  Howard Stern ,  Jon E. Van Tassell

    IPC分类号： G02B7/02 ,  G02B7/04 ,  G02B7/08 ,  G02B7/09 ,  G02B7/105 ,  G02B7/28 ,  G02B13/14 ,  G02B15/06 ,  G02B26/08 ,  G06K7/10

    CPC分类号： G02B26/0875 ,  G02B7/04 ,  G06K7/10811

    摘要： A focusable imaging system particularly suitable for use in acquiring digital images for subsequent processing such as in a hand held, omnidirectional symbology or bar code reader by which linear and two dimensional (matrix, maxi-code) bar codes may be imaged over relatively long working distances. The imaging system includes an focusing objective taking lens and a two-dimensional photodetector that operate to form an image of an object such as a bar code in X and Y directions simultaneously and generate an electrical signal representative of the object or code for subsequent downstream processing by which information embedded in the object or bar code may be extracted. Focusing is achieved via a rotating disk that carries a plurality of optical shims or other light controlling surfaces to provide for different focus zones. A through-the-lens (TTL) targeting system is provided to visually assist the user in positioning the reader for a variety of code modalities to assure that a bar code or the like will be captured within the field of view and be sharply imaged on the photodetector when the lens is focused. Two different forms of artificial illumination are provided to accommodate nearby objects or codes that may be either specular or partially diffuse and more distant objects or codes where the reflection characteristics have less impact on image contrast. Elements of the photodetector are used to assess available light levels and activate the artificial illumination system when ambient light levels are low. Ranging through the lens using elements of the photodetector is included to provide information to set the focus of the objective lens in one of many possible focusing zones.

    摘要翻译： 特别适用于采集数字图像以进行后续处理的可对焦成像系统，例如在手持式，全方位符号系统或条形码读取器中，线性和二维（矩阵，最大代码）条形码可以通过相对较长的工作进行成像 距离 成像系统包括聚焦物镜和二维光电检测器，其操作以同时在X和Y方向上形成诸如条形码之类的物体的图像，并产生代表用于后续下游处理的对象或代码的电信号 由此可以提取嵌入在对象或条形码中的信息。 通过旋转盘实现聚焦，该旋转盘携带多个光学垫片或其他光控制表面以提供不同的聚焦区域。 提供透镜（TTL）瞄准系统以视觉上协助用户定位读取器用于各种代码模式，以确保在视场内捕获条形码等，并在 当镜头聚焦时的光电检测器。 提供两种不同形式的人造照明以适应可能是镜面或部分漫射的附近物体或代码，并且更远的物体或代码，其中反射特征对图像对比度的影响较小。 光电探测器的元件用于评估可用的光照水平，并且当环境光线水平低时激活人造照明系统。 包括使用光电检测器的元件通过透镜进行测距以提供信息以将物镜的焦点设置在许多可能的聚焦区域之一中。