Patents by Inventor Azhar ZAM

Azhar ZAM 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).

  • Nano-sensitive fourier-domain optical coherence tomography inspection system
    Patent number: 10012492
    Abstract: An OCT imaging system (100) comprising a radiation emitter (SLD), a radiation receiver CCD), an interferometer (FC, PC, X-Scan, Y-Scan), a controller (COMP) which controls the emitter and processes received radiation data according to OCT to provide an output image. The controller (COMP) forms a spectrum of spatial frequencies along the depth direction. It calculates from the spectrum local spectra of spatial frequencies or periods along the depth direction for individual volume elements along the depth direction. It translates the local spectra of spatial frequencies or periods along the depth direction into the OCT image domain. It maps the local spectra into the volume elements to provide sensitivity on the nano-scale whereas the volume elements are in the micro-scale. The controller calculates information parameters from the translated and mapped local spectra. Thus the system (100) achieves nano-scale sensitivity although the volume elements are at the micro-scale.
    Type: Grant
    Filed: October 8, 2014
    Date of Patent: July 3, 2018
    Assignee: NATIONAL UNIVERSITY OF IRELAND, GALWAY
    Inventors: Sergey Alexandrov, Hrebesh Subhash, Martin J. Leahy, Azhar Zam
  • A NANO-SENSITIVE FOURIER-DOMAIN OPTICAL COHERENCE TOMOGRAPHY INSPECTION SYSTEM
    Publication number: 20160238370
    Abstract: An OCT imaging system (100) comprising a radiation emitter (SLD), a radiation receiver CCD), an interferometer (FC, PC, X-Scan, Y-Scan), a controller (COMP) which controls the emitter and processes received radiation data according to OCT to provide an output image. The controller (COMP) forms a spectrum of spatial frequencies along the depth direction. It calculates from the spectrum local spectra of spatial frequencies or periods along the depth direction for individual volume elements along the depth direction. It translates the local spectra of spatial frequencies or periods along the depth direction into the OCT image domain. It maps the local spectra into the volume elements to provide sensitivity on the nano-scale whereas the volume elements are in the micro-scale. The controller calculates information parameters from the translated and mapped local spectra. Thus the system (100) achieves nano-scale sensitivity although the volume elements are at the micro-scale.
    Type: Application
    Filed: October 8, 2014
    Publication date: August 18, 2016
    Applicant: NATIONAL UNIVERSITY OF IRELAND, GALWAY
    Inventors: Sergey ALEXANDROV, Hrebesh SUBHASH, Martin J. LEAHY, Azhar ZAM