公开(公告)号：EP0469305A3

公开(公告)日：1992-09-02

申请号：EP91110750.6

申请日：1991-06-28

申请人： SYMBOL TECHNOLOGIES, INC.

发明人： Metlitsky, Boris ,  Swartz, Jerome ,  Barkan, Edward ,  Shepard, Howard M. ,  Goren, David ,  Biuso, Tony

IPC分类号： G06K7/10

CPC分类号： G06K7/10881 ,  G06K2207/1013

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.

公开(公告)号：EP0469305A2

公开(公告)日：1992-02-05

申请号：EP91110750.6

申请日：1991-06-28

申请人： SYMBOL TECHNOLOGIES, INC.

发明人： Metlitsky, Boris ,  Swartz, Jerome ,  Barkan, Edward ,  Shepard, Howard M. ,  Goren, David ,  Biuso, Tony

IPC分类号： G06K7/10

CPC分类号： G06K7/10881 ,  G06K2207/1013

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： 便携式扫描头发射和接收来自发光二极管的光以读取诸如条形码符号之类的符号。 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器外壳外部的不同平面中。 成像装置设置在用于成像观察窗的单元中。 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，并且由于光电二极管仅“看到”通过观察窗可见的那部分扫描光点，所以可以容忍相对较大（以毫米为单位）的扫描光点而不牺牲读取性能。

公开(公告)号：EP0469305B1

公开(公告)日：1999-03-31

申请号：EP91110750.6

申请日：1991-06-28

申请人： SYMBOL TECHNOLOGIES, INC.

发明人： Metlitsky, Boris ,  Swartz, Jerome ,  Barkan, Edward ,  Shepard, Howard M. ,  Goren, David ,  Biuso, Tony

IPC分类号： G06K7/10

CPC分类号： G06K7/10881 ,  G06K2207/1013