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1. 发明申请

WO2009067345A1 IMAGING BAR CODE READER WITH ILLUMINATION CONTROL SYSTEM 审中-公开
标题翻译：成像条码读码器与照明控制系统
公开(公告)号：WO2009067345A1
公开(公告)日：2009-05-28
申请号：PCT/US2008/082964
申请日：2008-11-10
申请人： SYMBOL TECHNOLOGIES, INC. , GIEBEL, James R. , SACKETT, William , CARLSON, Bradley S.
发明人： GIEBEL, James R. , SACKETT, William , CARLSON, Bradley S.
IPC分类号： G06K9/00
CPC分类号： G06K7/10722
摘要： The disclosed bar code reader includes an auto-focusing component for rapidly producing in focus images. An imaging system makes use of an aiming pattern that impinges upon the coded indicia of a target. The imaging system includes a light monitoring pixel array and a focusing lens that is fixed with respect to the pixel array for transmitting an image of the target object onto the pixel array. The bar code reader also includes an illumination system comprising one or more light emitting diodes for illuminating the target within a field of view defined by the optical system. A drive circuit coupled to the light emitting diodes of the illumination system including at least one energy storage capacitor for providing an electrical pulse that illuminates the target. A controller selectively energizes the light emitting diodes by discharging the at least one capacitor of the drive circuit.
摘要翻译：所公开的条形码读取器包括用于快速产生聚焦图像的自动聚焦部件。成像系统利用撞击目标的编码标记的瞄准图案。成像系统包括光监测像素阵列和相对于像素阵列固定的聚焦透镜，用于将目标物体的图像传送到像素阵列上。条形码阅读器还包括一个照明系统，该照明系统包括一个或多个发光二极管，用于在由光学系统限定的视野内照射目标。耦合到照明系统的发光二极管的驱动电路，其包括用于提供照亮目标的电脉冲的至少一个储能电容器。控制器通过对驱动电路的至少一个电容器进行放电来选择性地激励发光二极管。

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