Patents by Inventor Christopher John Trowbridge

Christopher John Trowbridge 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).

  • Patent number: 12140701
    Abstract: An optical sensor assembly including a housing structure, a first optical sensor secured to the housing structure and arranged to sense in a first direction and a second optical sensor secured to the housing structure and arranged to sense in a second direction opposite to the first direction.
    Type: Grant
    Filed: May 23, 2023
    Date of Patent: November 12, 2024
    Assignee: LG INNOTEK CO., LTD.
    Inventors: Rituja Marathe, Christopher John Trowbridge
  • Publication number: 20240201329
    Abstract: A light detection and ranging (LiDAR) system including a plurality of light emitters, wherein the plurality of light emitters are configured to emit a plurality of beams, and the plurality of light emitters are configured to form a beam polarization pattern of the plurality of beams to be emitted toward an object external to the LiDAR system, a receiver that is configured to receive light reflected from the object, and an analyzer that comprises a processor and programming instructions that are configured to cause the processor to determine characteristic differences between the beam polarization pattern of the beams emitted toward the object and an intensity pattern of the light reflected from the object, determine a reflection position that is associated with the light reflected from the object, and use the determined characteristic differences to determine whether the reflection position is a position of the object or a position of a ghost.
    Type: Application
    Filed: February 28, 2024
    Publication date: June 20, 2024
    Applicant: LG INNOTEK CO., LTD.
    Inventors: Gary W. Kamerman, Christopher John Trowbridge, Viorel C. Negoita
  • Patent number: 11947039
    Abstract: A light detection and ranging (LiDAR) system includes light emitters that emit beams of light of substantially equal intensities. The light emitters form a beam polarization pattern with beams having varying polarizations. The LiDAR system also will include a receiver to receive light reflected from the object. An analyzer will determine characteristic differences between the beam polarization pattern of the beams emitted toward the object and an intensity pattern of the light reflected from the object, determine a reflection position that is associated with the light reflected from the object, and use the determined characteristic differences to determine whether the reflection position is a position of the object or a position of a ghost.
    Type: Grant
    Filed: May 19, 2022
    Date of Patent: April 2, 2024
    Assignee: LG INNOTEK CO., LTD.
    Inventors: Gary W. Kamerman, Christopher John Trowbridge, Viorel C. Negoita
  • Publication number: 20220276342
    Abstract: A light detection and ranging (LiDAR) system includes light emitters that emit beams of light of substantially equal intensities. The light emitters form a beam polarization pattern with beams having varying polarizations. The LiDAR system also will include a receiver to receive light reflected from the object. An analyzer will determine characteristic differences between the beam polarization pattern of the beams emitted toward the object and an intensity pattern of the light reflected from the object, determine a reflection position that is associated with the light reflected from the object, and use the determined characteristic differences to determine whether the reflection position is a position of the object or a position of a ghost.
    Type: Application
    Filed: May 19, 2022
    Publication date: September 1, 2022
    Inventors: Gary W. Kamerman, Christopher John Trowbridge, Viorel C. Negoita
  • Patent number: 11402472
    Abstract: A light detection and ranging (LiDAR) system includes light emitters that emit beams of light of substantially equal intensities. The light emitters form a beam polarization pattern with beams having varying polarizations. The LiDAR system also will include a receiver to receive light reflected from the object. An analyzer will determine characteristic differences between the beam polarization pattern of the beams emitted toward the object and an intensity pattern of the light reflected from the object, determine a reflection position that is associated with the light reflected from the object, and use the determined characteristic differences to determine whether the reflection position is a position of the object or a position of a ghost.
    Type: Grant
    Filed: April 16, 2019
    Date of Patent: August 2, 2022
    Assignee: Argo AI, LLC
    Inventors: Viorel C. Negoita, Christopher John Trowbridge, Gary W. Kamerman
  • Publication number: 20210011162
    Abstract: A light detection and ranging (LiDAR) system includes a light emitter and a light detector comprising a photodetector. The light detector is configured to receive and detect one or more characteristics of light emitted by the light emitter. The system also includes a polarization filter that is configured to limit polarization of light that is received by the light detector to a single polarization, and thus filter noise and/or certain retroreflected light from reaching the light detector.
    Type: Application
    Filed: July 11, 2019
    Publication date: January 14, 2021
    Inventors: Gary W. Kamerman, Christopher John Trowbridge, Viorel C. Negoita
  • Publication number: 20200333440
    Abstract: A light detection and ranging (LiDAR) system includes light emitters that emit beams of light of substantially equal intensities. The light emitters form a beam polarization pattern with beams having varying polarizations. The LiDAR system also will include a receiver to receive light reflected from the object. An analyzer will determine characteristic differences between the beam polarization pattern of the beams emitted toward the object and an intensity pattern of the light reflected from the object, determine a reflection position that is associated with the light reflected from the object, and use the determined characteristic differences to determine whether the reflection position is a position of the object or a position of a ghost.
    Type: Application
    Filed: April 16, 2019
    Publication date: October 22, 2020
    Inventors: Viorel C. Negoita, Christopher John Trowbridge, Gary W. Kamerman