公开(公告)号：WO2008097717B1

公开(公告)日：2008-10-09

申请号：PCT/US2008051836

申请日：2008-01-24

Applicant: SYMBOL TECHNOLOGIES INC ,  BARKAN EDWARD D ,  DRZYMALA MARK

Inventor： BARKAN EDWARD D ,  DRZYMALA MARK

IPC: G06K7/10 ,  G06K7/14

CPC classification number: G06K7/10603 ,  G06K7/14

Abstract: An extended working range electro-optical scanner for reading a barcode is described. The scanner includes a scan engine including a beam assembly for repetitively directing a beam of light at a scan angle across the barcode and an array of non-imaging light collectors for collecting and concentrating reflected light from the barcode. Each light collector of the array of light collectors includes entrance and exit apertures. A total area of the entrance apertures of the array of light collectors is greater than 50% of a total area of a target-facing surface of the scan engine. Each of a corresponding array of photodetectors is positioned at an exit aperture of a respective light collector of the array of light collectors to receive concentrated light from its respective collector and generates an output electrical signal corresponding to an intensity of the concentrated light received by the photodetector.

Abstract translation: 描述了用于读取条形码的扩展工作范围电光扫描器。 该扫描器包括扫描引擎，该扫描引擎包括用于以条形码扫描的角度重复地引导光束的束组件和用于收集和集中来自条形码的反射光的非成像光收集器的阵列。 集光器阵列的每个集光器包括入口和出射孔。 集光器阵列的入射孔的总面积大于扫描引擎的面向目标表面的总面积的50％。 相应的光电检测器阵列中的每一个都位于集光器阵列的相应光收集器的出射孔处，以从其相应的集电极接收集中的光，并产生对应于由光电检测器接收的集中光的强度的输出电信号 。