Patents Represented by Attorney Nongqing Fan

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  • Enhanced monitoring of laser output power in electro-optical readers
    Patent number: 8028918
    Abstract: Laser power monitoring arrangements interrupt power to a laser used in electro-optical readers upon detection of operating conditions not conforming to preestablished standards. An auxiliary light detector independently monitors the output power of a laser beam, and directly receives a portion of the laser beam reflected from an optical assembly operative for optically modifying the laser beam.
    Type: Grant
    Filed: October 31, 2007
    Date of Patent: October 4, 2011
    Assignee: Symbol Technologies, Inc.
    Inventors: Heng Zhang, Vladimir Gurevich, Ming Yu