Patents by Inventor Rahim Pardhan

Rahim Pardhan 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).

  • Publication number: 20240085530
    Abstract: Described herein is a LIDAR device that may include a transmitter, first and second receivers, and a rotating platform. The transmitter may be configured to emit light having a vertical beam width. The first receiver may be configured to detect light at a first resolution while scanning the environment with a first FOV and the second receiver may be configured to detect light at a second resolution while scanning the environment with a second FOV. In this arrangement, the first resolution may be higher than the second resolution, the first FOV may be at least partially different from the second FOV, and the vertical beam width may encompass at least a vertical extent of the first and second FOVs. Further, the rotating platform may be configured to rotate about an axis such that the transmitter and first and second receivers each move based on the rotation.
    Type: Application
    Filed: November 19, 2023
    Publication date: March 14, 2024
    Inventors: Pierre-Yves Droz, Caner Onal, William McCann, Bernard Fidric, Vadim Gutnik, Laila Mattos, Rahim Pardhan
  • Patent number: 11860305
    Abstract: Described herein is a LIDAR device that may include a transmitter, first and second receivers, and a rotating platform. The transmitter may be configured to emit light having a vertical beam width. The first receiver may be configured to detect light at a first resolution while scanning the environment with a first FOV and the second receiver may be configured to detect light at a second resolution while scanning the environment with a second FOV. In this arrangement, the first resolution may be higher than the second resolution, the first FOV may be at least partially different from the second FOV, and the vertical beam width may encompass at least a vertical extent of the first and second FOVs. Further, the rotating platform may be configured to rotate about an axis such that the transmitter and first and second receivers each move based on the rotation.
    Type: Grant
    Filed: June 26, 2019
    Date of Patent: January 2, 2024
    Assignee: Waymo LLC
    Inventors: Pierre-Yves Droz, Caner Onal, William McCann, Bernard Fidric, Vadim Gutnik, Laila Mattos, Rahim Pardhan
  • Patent number: 11843217
    Abstract: The present disclosure relates to a fiber encapsulation mechanism for energy dissipation in a fiber amplifying system. One example embodiment includes an optical fiber amplifier. The optical fiber amplifier includes an optical fiber that includes a gain medium, as well as a polymer layer that at least partially surrounds the optical fiber. The polymer layer is optically transparent. In addition, the optical fiber amplifier includes a pump source. Optical pumping by the pump source amplifies optical signals in the optical fiber and generates excess heat and excess photons. The optical fiber amplifier additionally includes a heatsink layer disposed adjacent to the polymer layer. The heatsink layer conducts the excess heat away from the optical fiber. Further, the optical fiber amplifier includes an optically transparent layer disposed adjacent to the polymer layer. The optically transparent layer transmits the excess photons away from the optical fiber.
    Type: Grant
    Filed: April 1, 2021
    Date of Patent: December 12, 2023
    Assignee: Waymo LLC
    Inventors: Bernard Fidric, Daniel Rosenfeld, Rahim Pardhan
  • Publication number: 20230161019
    Abstract: The present disclosure relates to systems and methods that facilitate compliance of a laser device with a laser safety threshold. An example method includes receiving, from a sensing circuit, an operating voltage that is indicative of a charge of a capacitive element of a laser pulser circuit. The method also includes comparing a first voltage indicative of the operating voltage and a second voltage indicative of a reference voltage. The method additionally includes providing an output value based on the comparing. The method yet further includes evaluating compliance with the laser safety threshold based on the output value.
    Type: Application
    Filed: January 23, 2023
    Publication date: May 25, 2023
    Inventors: Rahim Pardhan, Blaise Gassend
  • Publication number: 20230126631
    Abstract: A vehicle is provided that includes one or more wheels positioned at a bottom side of the vehicle. The vehicle also includes a first light detection and ranging device (LIDAR) positioned at a top side of the vehicle opposite to the bottom side. The first LIDAR is configured to scan an environment around the vehicle based on rotation of the first LIDAR about an axis. The first LIDAR has a first resolution. The vehicle also includes a second LIDAR configured to scan a field-of-view of the environment that extends away from the vehicle along a viewing direction of the second LIDAR. The second LIDAR has a second resolution. The vehicle also includes a controller configured to operate the vehicle based on the scans of the environment by the first LIDAR and the second LIDAR.
    Type: Application
    Filed: December 22, 2022
    Publication date: April 27, 2023
    Inventors: Pierre-yves Droz, Gaetan Pennecot, Drew Eugene Ulrich, Dorel Ionut Iordache, Rahim Pardhan
  • Patent number: 11585909
    Abstract: The present disclosure relates to systems and methods that facilitate compliance of a laser device with a laser safety threshold. An example method includes receiving, from a sensing circuit, an operating voltage that is indicative of a charge of a capacitive element of a laser pulser circuit. The method also includes comparing a first voltage indicative of the operating voltage and a second voltage indicative of a reference voltage. The method additionally includes providing an output value based on the comparing. The method yet further includes evaluating compliance with the laser safety threshold based on the output value.
    Type: Grant
    Filed: December 20, 2018
    Date of Patent: February 21, 2023
    Assignee: Waymo LLC
    Inventors: Rahim Pardhan, Blaise Gassend
  • Patent number: 11569629
    Abstract: An example apparatus may include a first plate having a first side. A first plurality of fins may be integral with the first side of the first plate and protruding perpendicularly therefrom. The first plurality of fins may be arranged in first concentric circles separated radially by a first distance. The apparatus may also include a second plate having a first side. The second plate may be rotatably coupled to the first plate. A second plurality of fins may be integral with the first side of the second plate and protruding perpendicularly therefrom. The second plurality of fins may be arranged in second concentric circles separated radially by the first distance. Each fin of the second plurality of fins may interpose between adjacent fins of the first plurality of fins to transfer heat between the second plate and the first plate.
    Type: Grant
    Filed: July 30, 2020
    Date of Patent: January 31, 2023
    Assignee: Waymo LLC
    Inventors: Rahim Pardhan, William McCann, Drew Ulrich, Pierre-yves Droz
  • Publication number: 20210278503
    Abstract: A vehicle is provided that includes one or more wheels positioned at a bottom side of the vehicle. The vehicle also includes a first light detection and ranging device (LIDAR) positioned at a top side of the vehicle opposite to the bottom side. The first LIDAR is configured to scan an environment around the vehicle based on rotation of the first LIDAR about an axis. The first LIDAR has a first resolution. The vehicle also includes a second LIDAR configured to scan a field-of-view of the environment that extends away from the vehicle along a viewing direction of the second LIDAR. The second LIDAR has a second resolution. The vehicle also includes a controller configured to operate the vehicle based on the scans of the environment by the first LIDAR and the second LIDAR.
    Type: Application
    Filed: March 8, 2021
    Publication date: September 9, 2021
    Inventors: Gaetan Pennecot, Zachary Morriss, Samuel Lenius, Dorel lonut lordache, Daniel Gruver, Pierre-Yves Droz, Luke Wachter, Drew Ulrich, William McCann, Rahim Pardhan, Bernard Fidric, Anthony Levandowski, Peter Avram
  • Publication number: 20210226401
    Abstract: The present disclosure relates to a fiber encapsulation mechanism for energy dissipation in a fiber amplifying system. One example embodiment includes an optical fiber amplifier. The optical fiber amplifier includes an optical fiber that includes a gain medium, as well as a polymer layer that at least partially surrounds the optical fiber. The polymer layer is optically transparent. In addition, the optical fiber amplifier includes a pump source. Optical pumping by the pump source amplifies optical signals in the optical fiber and generates excess heat and excess photons. The optical fiber amplifier additionally includes a heatsink layer disposed adjacent to the polymer layer. The heatsink layer conducts the excess heat away from the optical fiber. Further, the optical fiber amplifier includes an optically transparent layer disposed adjacent to the polymer layer. The optically transparent layer transmits the excess photons away from the optical fiber.
    Type: Application
    Filed: April 1, 2021
    Publication date: July 22, 2021
    Inventors: Bernard Fidric, Daniel Rosenfeld, Rahim Pardhan
  • Patent number: 10992096
    Abstract: The present disclosure relates to a fiber encapsulation mechanism for energy dissipation in a fiber amplifying system. One example embodiment includes an optical fiber amplifier. The optical fiber amplifier includes an optical fiber that includes a gain medium, as well as a polymer layer that at least partially surrounds the optical fiber. The polymer layer is optically transparent. In addition, the optical fiber amplifier includes a pump source. Optical pumping by the pump source amplifies optical signals in the optical fiber and generates excess heat and excess photons. The optical fiber amplifier additionally includes a heatsink layer disposed adjacent to the polymer layer. The heatsink layer conducts the excess heat away from the optical fiber. Further, the optical fiber amplifier includes an optically transparent layer disposed adjacent to the polymer layer. The optically transparent layer transmits the excess photons away from the optical fiber.
    Type: Grant
    Filed: May 7, 2018
    Date of Patent: April 27, 2021
    Assignee: Waymo LLC
    Inventors: Bernard Fidric, Daniel Rosenfeld, Rahim Pardhan
  • Patent number: 10976437
    Abstract: A vehicle is provided that includes one or more wheels positioned at a bottom side of the vehicle. The vehicle also includes a first light detection and ranging device (LIDAR) positioned at a top side of the vehicle opposite to the bottom side. The first LIDAR is configured to scan an environment around the vehicle based on rotation of the first LIDAR about an axis. The first LIDAR has a first resolution. The vehicle also includes a second LIDAR configured to scan a field-of-view of the environment that extends away from the vehicle along a viewing direction of the second LIDAR. The second LIDAR has a second resolution. The vehicle also includes a controller configured to operate the vehicle based on the scans of the environment by the first LIDAR and the second LIDAR.
    Type: Grant
    Filed: September 26, 2017
    Date of Patent: April 13, 2021
    Assignee: Waymo LLC
    Inventors: Gaetan Pennecot, Zachary Morriss, Samuel Lenius, Dorel Ionut Iordache, Daniel Gruver, Pierre-Yves Droz, Luke Wachter, Drew Ulrich, William Mccann, Rahim Pardhan, Bernard Fidric, Anthony Levandowski, Peter Avram
  • Publication number: 20200358242
    Abstract: An example apparatus may include a first plate having a first side. A first plurality of fins may be integral with the first side of the first plate and protruding perpendicularly therefrom. The first plurality of fins may be arranged in first concentric circles separated radially by a first distance. The apparatus may also include a second plate having a first side. The second plate may be rotatably coupled to the first plate. A second plurality of fins may be integral with the first side of the second plate and protruding perpendicularly therefrom. The second plurality of fins may be arranged in second concentric circles separated radially by the first distance. Each fin of the second plurality of fins may interpose between adjacent fins of the first plurality of fins to transfer heat between the second plate and the first plate.
    Type: Application
    Filed: July 30, 2020
    Publication date: November 12, 2020
    Inventors: Rahim Pardhan, William McCann, Drew Ulrich, Pierre-yves Droz
  • Patent number: 10749308
    Abstract: An example apparatus may include a first plate having a first side. A first plurality of fins may be integral with the first side of the first plate and protruding perpendicularly therefrom. The first plurality of fins may be arranged in first concentric circles separated radially by a first distance. The apparatus may also include a second plate having a first side. The second plate may be rotatably coupled to the first plate. A second plurality of fins may be integral with the first side of the second plate and protruding perpendicularly therefrom. The second plurality of fins may be arranged in second concentric circles separated radially by the first distance. Each fin of the second plurality of fins may interpose between adjacent fins of the first plurality of fins to transfer heat between the second plate and the first plate.
    Type: Grant
    Filed: October 17, 2016
    Date of Patent: August 18, 2020
    Assignee: Waymo LLC
    Inventors: Rahim Pardhan, William McCann, Drew Ulrich, Pierre-yves Droz
  • Patent number: 10693272
    Abstract: The present disclosure relates to a fiber encapsulation mechanism for energy dissipation in a fiber amplifying system. One example embodiment includes an optical fiber amplifier. The optical fiber amplifier includes an optical fiber that includes a gain medium, as well as a polymer layer that at least partially surrounds the optical fiber. The polymer layer is optically transparent. In addition, the optical fiber amplifier includes a pump source. Optical pumping by the pump source amplifies optical signals in the optical fiber and generates excess heat and excess photons. The optical fiber amplifier additionally includes a heatsink layer disposed adjacent to the polymer layer. The heatsink layer conducts the excess heat away from the optical fiber. Further, the optical fiber amplifier includes an optically transparent layer disposed adjacent to the polymer layer. The optically transparent layer transmits the excess photons away from the optical fiber.
    Type: Grant
    Filed: August 31, 2017
    Date of Patent: June 23, 2020
    Assignee: Waymo LLC
    Inventors: Bernard Fidric, Daniel Rosenfeld, Rahim Pardhan
  • Publication number: 20200142040
    Abstract: The present disclosure relates to systems and methods that facilitate compliance of a laser device with a laser safety threshold. An example method includes receiving, from a sensing circuit, an operating voltage that is indicative of a charge of a capacitive element of a laser pulser circuit. The method also includes comparing a first voltage indicative of the operating voltage and a second voltage indicative of a reference voltage. The method additionally includes providing an output value based on the comparing. The method yet further includes evaluating compliance with the laser safety threshold based on the output value.
    Type: Application
    Filed: December 20, 2018
    Publication date: May 7, 2020
    Inventors: Rahim Pardhan, Blaise Gassend
  • Publication number: 20190317503
    Abstract: Described herein is a LIDAR device that may include a transmitter, first and second receivers, and a rotating platform. The transmitter may be configured to emit light having a vertical beam width. The first receiver may be configured to detect light at a first resolution while scanning the environment with a first FOV and the second receiver may be configured to detect light at a second resolution while scanning the environment with a second FOV. In this arrangement, the first resolution may be higher than the second resolution, the first FOV may be at least partially different from the second FOV, and the vertical beam width may encompass at least a vertical extent of the first and second FOVs. Further, the rotating platform may be configured to rotate about an axis such that the transmitter and first and second receivers each move based on the rotation.
    Type: Application
    Filed: June 26, 2019
    Publication date: October 17, 2019
    Inventors: Pierre-Yves Droz, Caner Onal, William McCann, Bernard Fidric, Vadim Gutnik, Laila Mattos, Rahim Pardhan
  • Patent number: 10379540
    Abstract: Described herein is a LIDAR device that may include a transmitter, first and second receivers, and a rotating platform. The transmitter may be configured to emit light having a vertical beam width. The first receiver may be configured to detect light at a first resolution while scanning the environment with a first FOV and the second receiver may be configured to detect light at a second resolution while scanning the environment with a second FOV. In this arrangement, the first resolution may be higher than the second resolution, the first FOV may be at least partially different from the second FOV, and the vertical beam width may encompass at least a vertical extent of the first and second FOVs. Further, the rotating platform may be configured to rotate about an axis such that the transmitter and first and second receivers each move based on the rotation.
    Type: Grant
    Filed: October 17, 2016
    Date of Patent: August 13, 2019
    Assignee: Waymo LLC
    Inventors: Pierre-Yves Droz, Caner Onal, William McCann, Bernard Fidric, Vadim Gutnik, Laila Mattos, Rahim Pardhan
  • Patent number: 10120079
    Abstract: A vehicle is provided that includes one or more wheels positioned at a bottom side of the vehicle. The vehicle also includes a first light detection and ranging device (LIDAR) positioned at a top side of the vehicle opposite to the bottom side. The first LIDAR is configured to scan an environment around the vehicle based on rotation of the first LIDAR about an axis. The first LIDAR has a first resolution. The vehicle also includes a second LIDAR configured to scan a field-of-view of the environment that extends away from the vehicle along a viewing direction of the second LIDAR. The second LIDAR has a second resolution. The vehicle also includes a controller configured to operate the vehicle based on the scans of the environment by the first LIDAR and the second LIDAR.
    Type: Grant
    Filed: September 25, 2017
    Date of Patent: November 6, 2018
    Assignee: Waymo LLC
    Inventors: Gaetan Pennecot, Zachary Morriss, Samuel Lenius, Ionut Iordache, Daniel Gruver, Pierre-Yves Droz, Luke Wachter, Drew Ulrich, William McCann, Rahim Pardhan, Bernard Fidric, Anthony Levandowski, Peter Avram
  • Publication number: 20180254594
    Abstract: The present disclosure relates to a fiber encapsulation mechanism for energy dissipation in a fiber amplifying system. One example embodiment includes an optical fiber amplifier. The optical fiber amplifier includes an optical fiber that includes a gain medium, as well as a polymer layer that at least partially surrounds the optical fiber. The polymer layer is optically transparent. In addition, the optical fiber amplifier includes a pump source. Optical pumping by the pump source amplifies optical signals in the optical fiber and generates excess heat and excess photons. The optical fiber amplifier additionally includes a heatsink layer disposed adjacent to the polymer layer. The heatsink layer conducts the excess heat away from the optical fiber. Further, the optical fiber amplifier includes an optically transparent layer disposed adjacent to the polymer layer. The optically transparent layer transmits the excess photons away from the optical fiber.
    Type: Application
    Filed: May 7, 2018
    Publication date: September 6, 2018
    Inventors: Bernard Fidric, Daniel Rosenfeld, Rahim Pardhan
  • Patent number: RE48961
    Abstract: A vehicle is provided that includes one or more wheels positioned at a bottom side of the vehicle. The vehicle also includes a first light detection and ranging device (LIDAR) positioned at a top side of the vehicle opposite to the bottom side. The first LIDAR is configured to scan an environment around the vehicle based on rotation of the first LIDAR about an axis. The first LIDAR has a first resolution. The vehicle also includes a second LIDAR configured to scan a field-of-view of the environment that extends away from the vehicle along a viewing direction of the second LIDAR. The second LIDAR has a second resolution. The vehicle also includes a controller configured to operate the vehicle based on the scans of the environment by the first LIDAR and the second LIDAR.
    Type: Grant
    Filed: October 31, 2017
    Date of Patent: March 8, 2022
    Assignee: Waymo LLC
    Inventors: Daniel Gruver, Pierre-Yves Droz, Gaetan Pennecot, Anthony Levandowski, Drew Eugene Ulrich, Zachary Morriss, Luke Wachter, Dorel Ionut Iordache, Rahim Pardhan, William McCann, Bernard Fidric, Samuel William Lenius, Peter Avram