Light emitting diode scanner
    3.
    发明授权
    Light emitting diode scanner 失效
    发光二极管扫描仪

    公开(公告)号:US5136147A

    公开(公告)日:1992-08-04

    申请号:US572446

    申请日:1990-08-27

    IPC分类号: G06K7/10

    CPC分类号: G06K7/10702 G06K7/10594

    摘要: A portable scanning head emits and receives light from a light emitting diode to read symbols, such as bar-code symbols. The optics within the scanner are operative for focusing a light beam and the view of a light sensor in different planes exteriorly of a scanner housing. Imaging means are provided in the unit for imaging a viewing window. The viewing window has an area smaller than that of the scan spot. The system can employ an LED as a light source and tolerate the relatively large-sized (on the order of millimeters) scan spot without sacrificing reading performance since the photodiode "sees" only that portion of the scan spot visible through the viewing window.

    摘要翻译: 便携式扫描头发射并接收来自发光二极管的光以读取诸如条形码符号的符号。 扫描器内的光学器件用于将光束和光传感器的视图聚焦在扫描仪外壳外部的不同平面中。 在用于对观察窗进行成像的单元中提供成像装置。 观察窗口的面积小于扫描点的面积。 该系统可以使用LED作为光源并且容忍相对较大尺寸(毫米级)扫描点,而不牺牲读取性能,因为光电二极管仅“看到”仅通过观察窗可见的扫描点的那部分。

    Portable laser diode scanning head
    6.
    发明授权
    Portable laser diode scanning head 失效
    便携式激光二极管扫描头

    公开(公告)号:US5545889A

    公开(公告)日:1996-08-13

    申请号:US163580

    申请日:1993-12-07

    IPC分类号: G06K7/10

    摘要: A portable laser diode scanning head, aimable at each symbol to be read, emits and receives non-readily-visible laser light, and is equipped with a trigger-actuated aiming light arrangement for visually locating and tracking each symbol. A compact laser diode optical train and an optical folded path assembly, as well as an interchangeable component design and an integral window construction for the head also are disclosed. An embodiment that employs a stationary folding mirror mounted in fixed stationary relationship with a curved collecting mirror and a lightweight, movable scanning mirror is disclosed.

    摘要翻译: 可瞄准要读取的每个符号的便携式激光二极管扫描头发射和接收非易于观察的激光,并且配备有用于可视地定位和跟踪每个符号的触发器致动瞄准灯布置。 公开了一种紧凑型激光二极管光学系统和光学折叠路径组件,以及用于头部的可互换组件设计和整体窗口结构。 公开了一种使用与弯曲收集镜和轻量级可移动扫描镜固定固定关系的固定折叠镜的实施例。