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    Optical readers
    2.
    发明公开
    Optical readers 失效
    光学阅读器

    公开(公告)号：EP0573018A3

    公开(公告)日：1994-06-01

    申请号：EP93108880.1

    申请日：1993-06-02

    申请人： SYMBOL TECHNOLOGIES, INC.

    发明人： Dvorkis, Paul ,  Thomas, Ralph ,  Goren, David ,  Fuller, Robert ,  Goldner, Leonard H.

    IPC分类号： G06K7/10

    CPC分类号： G06K7/10881 ,  G06F3/03543 ,  G06F3/03545

    摘要： To read optically encoded information over a wide range of densities, the present invention provides a spacer system on the tip of an optical reader. The optical reader may be a contact wand type device, for example including a fixed laser emitter. Alternatively, the optical reader may be a moving spot scanner. In either case, the emitter element of the optical reader produces a diverging beam of light. During a reading operation, the spacer contacts the object surface on which optically encoded indicia is formed. The spacer selectively defines at least two different distances between the light emitter, or the focal point of the emitted beam of light, and the object surface. Because of the beam divergence, the diameter of the beam at its point of impact on the object surface will be different for each of the two different distances. The different beam diameters provide the optical reader with different effective sensing spots for reading different density symbols. The present invention also incorporates an optical reader, typically a moving spot laser scanner, into a number of different types of computer data input devices, such as the stylus of a digitizer table and a computer "mouse." In one such integrated terminal embodiment, the optical reader is combined with a touch sensitive display and data input device.

    Optical readers
    3.
    发明公开
    Optical readers 失效
    Optischer Leser。

    公开(公告)号：EP0573018A2

    公开(公告)日：1993-12-08

    申请号：EP93108880.1

    申请日：1993-06-02

    申请人： SYMBOL TECHNOLOGIES, INC.

    发明人： Dvorkis, Paul ,  Thomas, Ralph ,  Goren, David ,  Fuller, Robert ,  Goldner, Leonard H.

    IPC分类号： G06K7/10

    CPC分类号： G06K7/10881 ,  G06F3/03543 ,  G06F3/03545

    摘要： To read optically encoded information over a wide range of densities, the present invention provides a spacer system on the tip of an optical reader. The optical reader may be a contact wand type device, for example including a fixed laser emitter. Alternatively, the optical reader may be a moving spot scanner. In either case, the emitter element of the optical reader produces a diverging beam of light. During a reading operation, the spacer contacts the object surface on which optically encoded indicia is formed. The spacer selectively defines at least two different distances between the light emitter, or the focal point of the emitted beam of light, and the object surface. Because of the beam divergence, the diameter of the beam at its point of impact on the object surface will be different for each of the two different distances. The different beam diameters provide the optical reader with different effective sensing spots for reading different density symbols. The present invention also incorporates an optical reader, typically a moving spot laser scanner, into a number of different types of computer data input devices, such as the stylus of a digitizer table and a computer "mouse." In one such integrated terminal embodiment, the optical reader is combined with a touch sensitive display and data input device.

    摘要翻译： 为了在宽范围的密度上读取光学编码的信息，本发明提供了在光学读取器的尖端上的间隔器系统。 光学读取器可以是接触棒式器件，例如包括固定的激光发射器。 或者，光学读取器可以是移动点扫描器。 在任一种情况下，光学读取器的发射器元件产生发散的光束。 在读取操作期间，间隔物接触其上形成有光学编码标记的物体表面。 间隔物选择性地限定光发射器或发射光束的焦点与物体表面之间的至少两个不同的距离。 由于光束发散，在两个不同距离的每一个上，其在物体表面上的撞击点处的光束直径将是不同的。 不同的光束直径为光学读取器提供了用于读取不同密度符号的不同有效感测点。 本发明还将光学读取器（通常为移动点激光扫描器）并入多个不同类型的计算机数据输入设备，诸如数字转换器表的触笔和计算机“鼠标”。 在一个这样的集成终端实施例中，光学读取器与触敏显示器和数据输入装置组合。