Patents by Inventor Roger David Cullumber

Roger David Cullumber 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: 11835656
    Abstract: A method of three-dimensional imaging includes scanning a LiDAR system in a first direction with a first frequency and in a second direction with a second frequency that is different from the first frequency, so that a laser beam emitted by each laser source of the LiDAR system follows a Lissajous pattern. The method further includes emitting, using each laser source, a plurality of laser pulses as the LiDAR system is scanned in the first direction and the second direction; detecting, using each detector of the LiDAR system, a portion of each laser pulse of the plurality of laser pulses reflected off of one or more objects; determining, using a processor, a time of flight for each respective laser pulse from emission to detection; and acquiring a point cloud of the one or more objects based on the times of flight of the plurality of laser pulses.
    Type: Grant
    Filed: January 6, 2021
    Date of Patent: December 5, 2023
    Assignee: Cepton Technologies, Inc.
    Inventors: Jun Pei, Mark A. McCord, Roger David Cullumber, Yupeng Cui, Dongyi Liao
  • Patent number: 11686818
    Abstract: A LiDAR system includes a first optical lens, and one or more first optoelectronic packages spaced apart from the first optical lens along the optical axis of the first optical lens. Each respective first optoelectronic package includes a first plurality of optoelectronic components positioned on the respective first optoelectronic package such that a surface of each respective optoelectronic component lies substantially on the first surface of best focus. The LiDAR system further includes a second optical lens, and one or more second optoelectronic packages spaced apart from the second optical lens along the optical axis of the second optical lens. Each respective second optoelectronic package includes a second plurality of optoelectronic components positioned on the respective second optoelectronic package such that a surface of each respective optoelectronic component lies substantially on the second surface of best focus.
    Type: Grant
    Filed: March 24, 2020
    Date of Patent: June 27, 2023
    Assignee: Cepton Technologies, Inc.
    Inventors: Mark Armstrong McCord, Roger David Cullumber, Jun Pei, Henrik K. Nielsen
  • Publication number: 20210141065
    Abstract: A method of three-dimensional imaging includes scanning a LiDAR system in a first direction with a first frequency and in a second direction with a second frequency that is different from the first frequency, so that a laser beam emitted by each laser source of the LiDAR system follows a Lissajous pattern. The method further includes emitting, using each laser source, a plurality of laser pulses as the LiDAR system is scanned in the first direction and the second direction; detecting, using each detector of the LiDAR system, a portion of each laser pulse of the plurality of laser pulses reflected off of one or more objects; determining, using a processor, a time of flight for each respective laser pulse from emission to detection; and acquiring a point cloud of the one or more objects based on the times of flight of the plurality of laser pulses.
    Type: Application
    Filed: January 6, 2021
    Publication date: May 13, 2021
    Applicant: Cepton Technologies, Inc
    Inventors: Jun Pei, Mark A. McCord, Roger David Cullumber, Yupeng Cui, Dongyi Liao
  • Patent number: 10935637
    Abstract: A LiDAR system includes a first lens, a second lens, a first set of light sources and a first set of detectors positioned at a focal plane of the first lens, and a second set of light sources and a second set of detectors positioned at a focal plane of the second lens. Each detector of the second set of detectors is located at a respective detector position on the focal plane of the second lens that is optically conjugate with a position of a corresponding light source of the first set of light sources. Each detector of the first set of detectors is located at a respective detector position on the focal plane of the first lens that is optically conjugate with a position of a corresponding light source of the second set of light sources.
    Type: Grant
    Filed: January 28, 2020
    Date of Patent: March 2, 2021
    Assignee: Cepton Technologies, Inc.
    Inventors: Roger David Cullumber, Jun Pei, Mark A. McCord
  • Patent number: 10921431
    Abstract: A scanning lidar system includes a fixed frame, a first platform, and a first electro-optic assembly. The first electro-optic assembly includes a first laser source and a first photodetector mounted on the first platform. The scanning lidar system further includes a first flexure assembly flexibly coupling the first platform to the fixed frame, and a drive mechanism configured to scan the first platform with respect to the fixed frame in two dimensions in a plane substantially perpendicular to an optical axis of the lidar system. The scanning lidar system further includes a controller coupled to the drive mechanism. The controller is configured to cause the drive mechanism to scan the first platform in a first direction with a first frequency and in a second direction with a second frequency. The second frequency is similar but not identical to the first frequency.
    Type: Grant
    Filed: May 4, 2018
    Date of Patent: February 16, 2021
    Assignee: Cepton Technologies Inc.
    Inventors: Jun Pei, Mark A. McCord, Roger David Cullumber, Yupeng Cui, Dongyi Liao
  • Publication number: 20200309910
    Abstract: A LiDAR system includes a first optical lens, and one or more first optoelectronic packages spaced apart from the first optical lens along the optical axis of the first optical lens. Each respective first optoelectronic package includes a first plurality of optoelectronic components positioned on the respective first optoelectronic package such that a surface of each respective optoelectronic component lies substantially on the first surface of best focus. The LiDAR system further includes a second optical lens, and one or more second optoelectronic packages spaced apart from the second optical lens along the optical axis of the second optical lens. Each respective second optoelectronic package includes a second plurality of optoelectronic components positioned on the respective second optoelectronic package such that a surface of each respective optoelectronic component lies substantially on the second surface of best focus.
    Type: Application
    Filed: March 24, 2020
    Publication date: October 1, 2020
    Applicant: Cepton Technologies, Inc.
    Inventors: Mark Armstrong McCord, Roger David Cullumber, Jun Pei, Henrik K. Nielsen
  • Publication number: 20200241113
    Abstract: A LiDAR system includes a first lens, a second lens, a first set of light sources and a first set of detectors positioned at a focal plane of the first lens, and a second set of light sources and a second set of detectors positioned at a focal plane of the second lens. Each detector of the second set of detectors is located at a respective detector position on the focal plane of the second lens that is optically conjugate with a position of a corresponding light source of the first set of light sources. Each detector of the first set of detectors is located at a respective detector position on the focal plane of the first lens that is optically conjugate with a position of a corresponding light source of the second set of light sources.
    Type: Application
    Filed: January 28, 2020
    Publication date: July 30, 2020
    Applicant: Cepton Technologies, Inc.
    Inventors: Roger David Cullumber, Jun Pei, Mark A. McCord
  • Publication number: 20190120940
    Abstract: A scanning lidar system includes a fixed frame, a first platform, and a first electro-optic assembly. The first electro-optic assembly includes a first laser source and a first photodetector mounted on the first platform. The scanning lidar system further includes a first flexure assembly flexibly coupling the first platform to the fixed frame, and a drive mechanism configured to scan the first platform with respect to the fixed frame in two dimensions in a plane substantially perpendicular to an optical axis of the lidar system. The scanning lidar system further includes a controller coupled to the drive mechanism. The controller is configured to cause the drive mechanism to scan the first platform in a first direction with a first frequency and in a second direction with a second frequency. The second frequency is similar but not identical to the first frequency.
    Type: Application
    Filed: May 4, 2018
    Publication date: April 25, 2019
    Applicant: Cepton Technologies, Inc.
    Inventors: Jun Pei, Mark A. McCord, Roger David Cullumber, Yupeng Cui, Dongyi Liao