Patents by Inventor Jonathan J. Liu

Jonathan J. Liu has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Swept-source optical coherence tomography (SS-OCT) phase stabilization with reference signal calibration
    Patent number: 10627212
    Abstract: A reference signal having a known induced optical delay is used for phase stabilization of optical coherence tomography (OCT) interferograms, and for correcting sampling differences within OCT interferograms, in single mode and multimodal OCT systems. The reference signal can then be used to the measure time shift or sample clock period shifts induced in the interferogram signal by the OCT system. A corresponding OCT interferogram signal can then be corrected to remove the shift induced by the system based on the determination.
    Type: Grant
    Filed: April 18, 2017
    Date of Patent: April 21, 2020
    Assignee: KABUSHIKI KAISHA TOPCON
    Inventors: Jonathan J. Liu, Zhenguo Wang, Jongsik Kim, Kinpui Chan
  • SWEPT-SOURCE OPTICAL COHERENCE TOMOGRAPHY (SS-OCT) PHASE STABILIZATION WITH REFERENCE SIGNAL CALIBRATION
    Publication number: 20170307353
    Abstract: A reference signal having a known induced optical delay is used for phase stabilization of optical coherence tomography (OCT) interferograms, and for correcting sampling differences within OCT interferograms, in single mode and multimodal OCT systems. The reference signal can then be used to the measure time shift or sample clock period shifts induced in the interferogram signal by the OCT system. A corresponding OCT interferogram signal can then be corrected to remove the shift induced by the system based on the determination.
    Type: Application
    Filed: April 18, 2017
    Publication date: October 26, 2017
    Inventors: Jonathan J. Liu, Zhenguo Wang, Jongsik Kim, Kinpui Chan