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    Laser power control arrangements in electro-optical readers
    1.
    发明授权
    Laser power control arrangements in electro-optical readers 有权
    电光读取器中的激光功率控制装置

    公开(公告)号：US07609736B2

    公开(公告)日：2009-10-27

    申请号：US11239745

    申请日：2005-09-30

    申请人： Costanzo Difazio ,  Vladimir Gurevich ,  James Giebel ,  Gary G. Schneider ,  Matthew Blasczak ,  Mark A. Weitzner ,  Edward Barkan

    发明人： Costanzo Difazio ,  Vladimir Gurevich ,  James Giebel ,  Gary G. Schneider ,  Matthew Blasczak ,  Mark A. Weitzner ,  Edward Barkan

    IPC分类号： 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。

    LASER POWER CONTROL ARRANGEMENTS IN ELECTRO-OPTICAL READERS
    3.
    发明申请
    LASER POWER CONTROL ARRANGEMENTS IN ELECTRO-OPTICAL READERS 审中-公开
    电光读取器中的激光功率控制装置

    公开(公告)号：US20100074286A1

    公开(公告)日：2010-03-25

    申请号：US12561341

    申请日：2009-09-17

    申请人： Costanzo Difazio ,  Vladimir Gurevich ,  James Giebel ,  Gary G. Schneider ,  Matthew Blasczak ,  Mark A. Weitzner ,  Edward Barkan

    发明人： Costanzo Difazio ,  Vladimir Gurevich ,  James Giebel ,  Gary G. Schneider ,  Matthew Blasczak ,  Mark A. Weitzner ,  Edward Barkan

    IPC分类号： 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。

    Velocity control system using piezoelectric transducers
    5.
    发明授权
    Velocity control system using piezoelectric transducers 失效
    使用压电换能器的速度控制系统

    公开(公告)号：US4856901A

    公开(公告)日：1989-08-15

    申请号：US190195

    申请日：1988-05-04

    申请人： Lincoln S. Ferriss ,  Mark A. Weitzner

    发明人： Lincoln S. Ferriss ,  Mark A. Weitzner

    IPC分类号： G01C19/68 ,  G01C19/70 ,  H01S3/083

    CPC分类号： G01C19/70

    摘要： A piezoelectric activated dither suspension system for a ring laser gyroscope has all of the transducer elements connected in parallel to simultaneously produce sustaining torque for dither motion and respond to a back component of current produced by the vibrational motion of the gyro block. The generated current, separated from drive currents from the torquer amplifier by a transformer or, in an alternative embodiment, by sensing resistors, produces the very signal used to control and sustain the oscillations. By utilizing all transducers both as torquer and pickoff elements, economies of drive efficiency, wiring simplification and circuit redundancies are achieved.