Patents by Inventor Raghu Ambekar Ramachandra Rao

Raghu Ambekar Ramachandra Rao 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).

  • PYRAMIDAL MIRROR LASER SCANNING FOR LIDAR
    Publication number: 20220276353
    Abstract: An apparatus includes a detector and a light source configured to emit light. The apparatus further includes a disk with a set of prisms and that is configured to rotate, arranged to receive and direct the emitted light, and arranged to receive and direct backscattered light. The apparatus further includes a reflecting apparatus with multiple reflective facets and configured to rotate, arranged to reflect the emitted light, and arranged to reflect the backscattered light. A focusing apparatus is arranged to focus the backscattered light from the disk towards the detector.
    Type: Application
    Filed: May 18, 2022
    Publication date: September 1, 2022
    Inventors: Dan Mohr, Zoran Jandric, Kevin A. Gomez, Raghu Ambekar Ramachandra Rao
  • Pyramidal mirror laser scanning for lidar
    Patent number: 11422237
    Abstract: An apparatus includes a detector and a light source configured to emit light. The apparatus further includes a disk with a set of prisms and that is configured to rotate, arranged to receive and direct the emitted light, and arranged to receive and direct backscattered light. The apparatus further includes a reflecting apparatus with multiple reflective facets and configured to rotate, arranged to reflect the emitted light, and arranged to reflect the backscattered light. A focusing apparatus is arranged to focus the backscattered light from the disk towards the detector.
    Type: Grant
    Filed: January 15, 2019
    Date of Patent: August 23, 2022
    Assignee: Seagate Technology LLC
    Inventors: Dan Mohr, Zoran Jandric, Kevin A. Gomez, Raghu Ambekar Ramachandra Rao
  • Rotating pyramidal mirror
    Patent number: 11391822
    Abstract: An apparatus includes a detector, a light source configured to emit light, a reflecting apparatus having multiple reflective facets, and a mirror. The reflecting apparatus is configured to rotate around an axis and arranged to reflect the emitted light from the light source and reflect backscattered light. The mirror is arranged to reflect the backscattered light from the reflecting apparatus towards the detector.
    Type: Grant
    Filed: November 30, 2018
    Date of Patent: July 19, 2022
    Assignee: Seagate Technology LLC
    Inventors: Kevin A Gomez, Zoran Jandric, Krishnan Subramanian, Pierre Asselin, Dan Mohr, Raghu Ambekar Ramachandra Rao
  • System and method for far-field optical testing of heat-assisted recording heads
    Patent number: 11320367
    Abstract: A testing system includes a production-type laser having optical modes of a production laser that interfaces with an optical path of a heat-assisted magnetic recording (HAMR) slider. A far-field light illumination path delivers excitation light from the production-type laser to the optical path of the HAMR slider, the excitation light being emitted from an air bearing surface (ABS) of the HAMR slider. Optics receive the emitted light from the ABS and distribute the emitted light to one or more sensors. The system determines, based on signals received from the one or more sensors, a depolarization of the emitted light and a coupling efficiency of the HAMR slider. The system may also measure light reflecting out of the optical path and Fourier transform these measurements to determine locations of reflections within the optical path.
    Type: Grant
    Filed: October 9, 2020
    Date of Patent: May 3, 2022
    Assignee: Seagate Technology LLC
    Inventors: Raghu Ambekar Ramachandra Rao, Aaron Edward Patz, Tae-Woo Lee
  • PYRAMIDAL MIRROR LASER SCANNING FOR LIDAR
    Publication number: 20200225328
    Abstract: An apparatus includes a detector and a light source configured to emit light. The apparatus further includes a disk with a set of prisms and that is configured to rotate, arranged to receive and direct the emitted light, and arranged to receive and direct backscattered light. The apparatus further includes a reflecting apparatus with multiple reflective facets and configured to rotate, arranged to reflect the emitted light, and arranged to reflect the backscattered light. A focusing apparatus is arranged to focus the backscattered light from the disk towards the detector.
    Type: Application
    Filed: January 15, 2019
    Publication date: July 16, 2020
    Inventors: Dan Mohr, Zoran Jandric, Kevin A. Gomez, Raghu Ambekar Ramachandra Rao
  • ROTATING PYRAMIDAL MIRROR
    Publication number: 20200174103
    Abstract: An apparatus includes a detector, a light source configured to emit light, a reflecting apparatus having multiple reflective facets, and a mirror. The reflecting apparatus is configured to rotate around an axis and arranged to reflect the emitted light from the light source and reflect backscattered light. The mirror is arranged to reflect the backscattered light from the reflecting apparatus towards the detector.
    Type: Application
    Filed: November 30, 2018
    Publication date: June 4, 2020
    Inventors: Kevin A. Gomez, Zoran Jandric, Krishnan Subramanian, Pierre Asselin, Dan Mohr, Raghu Ambekar Ramachandra Rao