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).
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Patent number: 11835656Abstract: 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: GrantFiled: January 6, 2021Date of Patent: December 5, 2023Assignee: Cepton Technologies, Inc.Inventors: Jun Pei, Mark A. McCord, Roger David Cullumber, Yupeng Cui, Dongyi Liao
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Patent number: 11686818Abstract: 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: GrantFiled: March 24, 2020Date of Patent: June 27, 2023Assignee: Cepton Technologies, Inc.Inventors: Mark Armstrong McCord, Roger David Cullumber, Jun Pei, Henrik K. Nielsen
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Publication number: 20210141065Abstract: 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: ApplicationFiled: January 6, 2021Publication date: May 13, 2021Applicant: Cepton Technologies, IncInventors: Jun Pei, Mark A. McCord, Roger David Cullumber, Yupeng Cui, Dongyi Liao
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Patent number: 10935637Abstract: 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: GrantFiled: January 28, 2020Date of Patent: March 2, 2021Assignee: Cepton Technologies, Inc.Inventors: Roger David Cullumber, Jun Pei, Mark A. McCord
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Patent number: 10921431Abstract: 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: GrantFiled: May 4, 2018Date of Patent: February 16, 2021Assignee: Cepton Technologies Inc.Inventors: Jun Pei, Mark A. McCord, Roger David Cullumber, Yupeng Cui, Dongyi Liao
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Publication number: 20200309910Abstract: 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: ApplicationFiled: March 24, 2020Publication date: October 1, 2020Applicant: Cepton Technologies, Inc.Inventors: Mark Armstrong McCord, Roger David Cullumber, Jun Pei, Henrik K. Nielsen
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Publication number: 20200241113Abstract: 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: ApplicationFiled: January 28, 2020Publication date: July 30, 2020Applicant: Cepton Technologies, Inc.Inventors: Roger David Cullumber, Jun Pei, Mark A. McCord
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Publication number: 20190120940Abstract: 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: ApplicationFiled: May 4, 2018Publication date: April 25, 2019Applicant: Cepton Technologies, Inc.Inventors: Jun Pei, Mark A. McCord, Roger David Cullumber, Yupeng Cui, Dongyi Liao