公开(公告)号：US20100102128A1

公开(公告)日：2010-04-29

申请号：US12288803

申请日：2008-10-23

申请人： Igor Vinogradov ,  Mark Drzymala ,  Darren Handshaw ,  Yuly Mitelman ,  Rong Liu

发明人： Igor Vinogradov ,  Mark Drzymala ,  Darren Handshaw ,  Yuly Mitelman ,  Rong Liu

IPC分类号： G06K7/10

CPC分类号： G06K7/10584 ,  G06K7/10702 ,  G06K7/10851

摘要： A laser power control arrangement and method in an electro-optical reader for reading indicia includes an energizable laser for emitting a laser beam having an output power along a path. An internal light detector, e.g., a monitor photodiode, is mounted inside the laser for monitoring the output power of the laser. An external light detector, e.g., an auxiliary photodiode, is mounted outside the laser for monitoring the output power of the laser independently of the internal light detector. A guide, advantageously a light pipe or a diffuser, is positioned outside the laser in the path of the laser beam for guiding the laser beam from the laser to the external light detector. A controller is operatively connected to each light detector, for controlling a monitored output power of the laser beam by deenergizing the laser when the monitored output power of the laser beam exceeds a safe power level limit.

摘要翻译： 用于读取标记的电光读取器中的激光功率控制装置和方法包括用于发射具有沿着路径的输出功率的激光束的可激励激光器。 内部光检测器，例如监视器光电二极管，安装在激光器的内部，用于监视激光器的输出功率。 外部光检测器（例如辅助光电二极管）安装在激光器的外部，用于独立于内部光检测器监视激光器的输出功率。 引导件，有利地是光管或扩散器，位于激光束的路径内，用于将激光束从激光器引导到外部光检测器。 控制器可操作地连接到每个光检测器，用于当激光束的监视的输出功率超过安全功率电平限制时，通过对激光器进行去激励来控制激光束的监视的输出功率。

公开(公告)号：US08002186B2

公开(公告)日：2011-08-23

申请号：US12288803

申请日：2008-10-23

申请人： Igor Vinogradov ,  Mark Drzymala ,  Darren Handshaw ,  Yuly Mitelman ,  Rong Liu

发明人： Igor Vinogradov ,  Mark Drzymala ,  Darren Handshaw ,  Yuly Mitelman ,  Rong Liu

IPC分类号： G06K7/10

CPC分类号： G06K7/10584 ,  G06K7/10702 ,  G06K7/10851

摘要： A laser power control arrangement and method in an electro-optical reader for reading indicia includes an energizable laser for emitting a laser beam having an output power along a path. An internal light detector, e.g., a monitor photodiode, is mounted inside the laser for monitoring the output power of the laser. An external light detector, e.g., an auxiliary photodiode, is mounted outside the laser for monitoring the output power of the laser independently of the internal light detector. A guide, advantageously a light pipe or a diffuser, is positioned outside the laser in the path of the laser beam for guiding the laser beam from the laser to the external light detector. A controller is operatively connected to each light detector, for controlling a monitored output power of the laser beam by deenergizing the laser when the monitored output power of the laser beam exceeds a safe power level limit.

摘要翻译： 用于读取标记的电光读取器中的激光功率控制装置和方法包括用于发射具有沿着路径的输出功率的激光束的可激励激光器。 内部光检测器，例如监视器光电二极管，安装在激光器的内部，用于监视激光器的输出功率。 外部光检测器（例如辅助光电二极管）安装在激光器的外部，用于独立于内部光检测器监视激光器的输出功率。 引导件，有利地是光管或扩散器，位于激光束的路径内，用于将激光束从激光器引导到外部光检测器。 控制器可操作地连接到每个光检测器，用于当所监视的激光束的输出功率超过安全功率电平限制时，通过对激光器通电来控制激光束的监测输出功率。