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    • 47. 发明申请
    • BAR CODE SYMBOL READING SYSTEM EMPLOYING AN EXTREMELY ELONGATED LASER SCANNING BEAM CAPABLE OF READING POOR AND DAMAGED QUALITY BAR CODE SYMBOLS WITH IMPROVED LEVELS OF PERFORMANCE
    • 条形码符号读取系统采用极度延长的激光扫描光束,可读取不良和损坏的质量条码代码,具有改进的性能水平
    • US20120318868A1
    • 2012-12-20
    • US13160897
    • 2011-06-15
    • Erik Van HornPatrick Anthony GiordanoThomas AmundsenDaniel James OlsonRobert Hugh BradyStephen ColavitoKevin SaberThomas HaggertyDavid M. Wilz, SR.
    • Erik Van HornPatrick Anthony GiordanoThomas AmundsenDaniel James OlsonRobert Hugh BradyStephen ColavitoKevin SaberThomas HaggertyDavid M. Wilz, SR.
    • G06K7/14
    • G06K7/10564G06K7/146
    • A laser scanning bar code symbol reading system for scanning and reading poor quality or damaged bar code symbols. The system includes a housing having a light transmission window; an extremely-elongated laser beam production module for producing an extremely-elongated laser beam having (i) a direction of propagation extending along a z reference direction, (ii) a height dimension being indicated by the y reference direction, and (iii) a width dimension being indicated by the x reference direction, where x, y and z directions are orthogonal to each other. Each extremely-elongated laser beam is characterized by an elongation ratio (ER) that is defined as Y/X>4.5 for any point within the working range of the laser scanning bar code symbol reading system, extending along the z direction; where (i) Y indicates the beam height of the extremely-elongated laser beam measured in the Y reference direction, and X indicates the beam width of the extremely-elongated laser beam measured in the X reference direction, and (iii) the beam height (Y) and the laser beam width (X) are measured at 1/e2 intensity clip level. A laser scanning mechanism is provided for scanning the extremely-elongated laser beam out the light transmission window and across a scanning field defined external to the housing, in which a bar code symbol is present for scanning by the extremely-elongated laser scanning beam.
    • 一种用于扫描和读取质量差或条形码符号损坏的激光扫描条形码符号读取系统。 该系统包括具有透光窗的外壳; 一种非常细长的激光束产生模块,用于产生非常细长的激光束,该激光束具有(i)沿着氮基准方向延伸的传播方向,(ii)由y参考方向指示的高度尺寸,以及(iii) 尺寸由x参考方向指示,其中x,y和z方向彼此正交。 每个非常细长的激光束的特征在于在激光扫描条形码符号读取系统的工作范围内沿着z方向延伸的任意点被定义为Y / X> 4.5的伸长率(ER) 其中(i)Y表示在Y参考方向上测量的非常细长的激光束的光束高度,X表示在X参考方向上测量的非常细长的激光束的光束宽度,以及(iii)光束高度 (Y)和激光束宽度(X)以1 / e2强度剪辑电平进行测量。 提供了一种激光扫描机构,用于将非常细长的激光束从光透射窗口扫描并跨过限定在外壳外部的扫描场,其中存在条形码符号用于通过非常细长的激光扫描光束进行扫描。