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1. 发明申请

US20070133633A1 Laser power control arrangements in electro-optical readers 有权
标题翻译：电光读取器中的激光功率控制装置
公开(公告)号：US20070133633A1
公开(公告)日：2007-06-14
申请号：US11239745
申请日：2005-09-30
申请人： Costanzo Difazio , Vladimir Gurevich , James Giebel , Gary Schneider , Matthew Blasczak , Mark Weitzner , Edward Barkan
发明人： Costanzo Difazio , Vladimir Gurevich , James Giebel , Gary Schneider , Matthew Blasczak , Mark Weitzner , Edward Barkan
IPC分类号： H01S3/13 , H01S3/00
CPC分类号： H01S5/0014 , G06K7/10851 , H01S5/0617 , H01S5/06808 , H01S5/06825 , H01S5/0683
摘要： Laser power control arrangements interrupt power to a laser used in electro-optical readers upon detection of an over-power condition not conforming to preestablished regulatory standards. In one embodiment, during an operational mode, a difference between laser drive currents at two operating points is compared to a difference between laser drive currents at the same two operating points during a calibration mode. The over-power condition is recognized when the difference during the operational mode exceeds the difference during the calibration mode by a predetermined amount. In another embodiment, the laser is only energized to emit the beam at a reduced power level well below regulatory standards for staring at even if a motor drive failed.
摘要翻译：激光功率控制装置在检测到不符合预先制定的监管标准的过功率状况时，会中断电光读取器中使用的激光的电源。在一个实施例中，在操作模式期间，将两个操作点处的激光驱动电流之间的差与在校准模式期间相同的两个操作点处的激光驱动电流之间的差异进行比较。当在操作模式期间的差超过校准模式期间的差异预定量时，识别过功率状况。在另一个实施例中，激光器仅被激励以在远低于监管标准的降低功率水平下发射光束，以便即使电动机驱动器失效也可以凝视。

2. 发明申请

US20060016891A1 Laser power control arrangements in electro-optical readers 失效
标题翻译：电光读取器中的激光功率控制装置
公开(公告)号：US20060016891A1
公开(公告)日：2006-01-26
申请号：US10897723
申请日：2004-07-23
申请人： James Giebel , Gary Schneider , Vladimir Gurevich , Mark Weitzner , Costanzo Difazio , Matthew Blasczak , Mark Anderson , Edward Barkan
发明人： James Giebel , Gary Schneider , Vladimir Gurevich , Mark Weitzner , Costanzo Difazio , Matthew Blasczak , Mark Anderson , Edward Barkan
IPC分类号： G06K7/10 , G02B26/10
CPC分类号： G02B26/105 , G06K7/10584 , G06K7/10851
摘要： Laser power control arrangements interrupt power to a laser used in electro-optical readers upon detection of operating conditions not conforming to preestablished standards, and adjust power to the laser to enhance reader performance without violating prevalent safety standards.
摘要翻译：激光功率控制装置在检测到不符合预先制定的标准的操作条件时，会中断电光读取器中使用的激光的电源，并调整激光功率，以提高读取器性能，而不会违反普遍的安全标准。

3. 发明授权

US08733659B2 Arrangement for and method of regulating laser output power in electro-optical readers 有权
标题翻译：电光读取器中激光输出功率的调整和调节方法
公开(公告)号：US08733659B2
公开(公告)日：2014-05-27
申请号：US12870040
申请日：2010-08-27
申请人： James Giebel , Matthew Blasczak , Peter Fazekas , Mark Weitzner
发明人： James Giebel , Matthew Blasczak , Peter Fazekas , Mark Weitzner
IPC分类号： G02B26/10
CPC分类号： G06K7/10584
摘要： In an electro-optical reader, an aiming or a scanning laser has a laser chip and a monitor photodiode. Output power of a laser beam emitted by the laser is regulated by a feedback circuit for maintaining substantially constant the laser beam output power during normal operation, a disabling circuit for disabling the feedback circuit, a drive circuit for driving the chip with a drive current when the feedback circuit is disabled, and for concomitantly generating a photodiode output voltage, a current modification circuit for modifying the drive current by a predetermined current with a concomitant change in the photodiode output voltage when the feedback circuit is disabled, and a control circuit for monitoring the change in the photodiode output voltage, for determining whether the change in the photodiode output voltage is sufficient to indicate an over-power condition, and for interrupting power to the chip when the over-power condition is indicated.
摘要翻译：在电光读取器中，瞄准或扫描激光器具有激光芯片和监视器光电二极管。由激光器发射的激光束的输出功率由反馈电路调节，用于在正常操作期间保持激光束输出功率基本上恒定，用于禁用反馈电路的禁用电路，用于以驱动电流驱动芯片的驱动电路，反馈电路被禁止，并且用于同时产生光电二极管的输出电压，用于当反馈电路被禁用时用光源输出电压的伴随变化来修改驱动电流预定电流的电流修改电路，以及用于监视的反馈电路的控制电路光电二极管输出电压的变化，用于确定光电二极管输出电压的变化是否足以指示过功率状态，以及当指示过功率状态时中断芯片的电源。

4. 发明授权

US08167208B2 Arrangement for and method of controlling monitor photodiode leakage current in lasers in electro-optical readers 有权
标题翻译：监控光电读取器激光器中的光电二极管漏电流的控制方法及控制方法
公开(公告)号：US08167208B2
公开(公告)日：2012-05-01
申请号：US12821436
申请日：2010-06-23
申请人： Mark Weitzner , James Giebel
发明人： Mark Weitzner , James Giebel
IPC分类号： G06K7/10 , G08C21/00 , H01S3/00
CPC分类号： G06K7/10584 , G06K7/10851
摘要： In an electro-optical reader, an aiming or a scanning laser has an internal laser chip and a monitor photodiode. A controller deenergizes the chip in a deenergized state, and energizes the chip to emit a laser beam with an output power in an energized state. A positive voltage power supply forward biases and maintains the photodiode at a substantially constant positive voltage below a threshold voltage, to support a substantially constant photodiode leakage current in both states. A signal processor supports a total current comprised of a main photodiode current indicative of the output power of the laser beam in the energized state and of the leakage current which flows opposite to the main current, and removes the leakage current from the total current to output only the main current in the energized state.
摘要翻译：在电光读取器中，瞄准或扫描激光器具有内部激光芯片和监视器光电二极管。控制器以断电状态使芯片断电，并且使芯片通电以发射具有处于通电状态的输出功率的激光束。正电压电源向前偏置并将光电二极管维持在低于阈值电压的基本上恒定的正电压，以支持两种状态中基本上恒定的光电二极管漏电流。信号处理器支持包括主光电二极管电流的总电流，该电流表示激励状态下的激光束的输出功率和与主电流相反的漏电流，并且将漏电流从总电流消除到输出只有主电流处于通电状态。

5. 发明授权

US07428995B1 Scanning devices and methods using surface emitting laser diodes 有权
公开(公告)号：US07428995B1
公开(公告)日：2008-09-30
申请号：US09777076
申请日：2001-02-05
申请人： Miklos Stern , Chinh Tan , Yajun Li , Howard Shepard , Thomas Mazz , Eric Barkan , Vikram Bhargava , Andrew Fusco , Mark Weitzner
发明人： Miklos Stern , Chinh Tan , Yajun Li , Howard Shepard , Thomas Mazz , Eric Barkan , Vikram Bhargava , Andrew Fusco , Mark Weitzner
IPC分类号： G06K7/10
CPC分类号： G06K7/10702 , G06K7/10742
摘要： A bar code scanning device, system and method that utilizes one or more vertical cavity surface emitting laser diodes for producing at least one laser beam, where the vertical cavity surface emitting laser diodes are disposed on a substrate, and wherein the produced laser beam is substantially an essential single spatial mode laser beam. The bar code scanning device, system and method of present invention also comprise a photodiode attached to the substrate and arranged to receive at least a portion of the beam of light reflected off the scanned bar code or symbol.

6. 发明申请

US20080308639A1 Scanning devices and methods using surface emitting laser diodes 审中-公开
标题翻译：使用表面发射激光二极管的扫描装置和方法
公开(公告)号：US20080308639A1
公开(公告)日：2008-12-18
申请号：US12221848
申请日：2008-08-07
申请人： Miklos Stern , Chinh Tan , Yajun Li , Howard Shepard , Thomas Mazz , Eric Barkan , Vikram Bhargava , Andrew Fusco , Mark Weitzner
发明人： Miklos Stern , Chinh Tan , Yajun Li , Howard Shepard , Thomas Mazz , Eric Barkan , Vikram Bhargava , Andrew Fusco , Mark Weitzner
IPC分类号： G06K7/10
CPC分类号： G06K7/10702 , G06K7/10742
摘要： A bar code scanning device, system and method that utilizes one or more vertical cavity surface emitting laser diodes for producing at least one laser beam, where the vertical cavity surface emitting laser diodes are disposed on a substrate, and wherein the produced laser beam is substantially an essential single spatial mode laser beam. The bar code scanning device, system and method of present invention also comprise a photodiode attached to the substrate and arranged to receive at least a portion of the beam of light reflected off the scanned bar code or symbol.
摘要翻译：一种条形码扫描装置，系统和方法，其利用一个或多个垂直腔表面发射激光二极管来产生至少一个激光束，其中垂直腔表面发射激光二极管设置在衬底上，并且其中所产生的激光束基本上一个基本的单一空间模式激光束。本发明的条形码扫描装置，系统和方法还包括光电二极管，其附接到基板并被布置成接收从扫描的条形码或符号反射的光束的至少一部分。

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