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    Positional Tracking Systems and Methods
    1.
    发明申请
    Positional Tracking Systems and Methods 有权

    公开(公告)号：US20220308167A1

    公开(公告)日：2022-09-29

    申请号：US17839185

    申请日：2022-06-13

    Applicant: Valve Corporation

    Inventor： Alan Yates ,  Jeremy Adam Selan

    IPC: G01S7/481 ,  G01S7/4912

    Abstract: Optical positional tracking systems that may be used in virtual reality (VR)/augmented reality (AR) applications are described. Exemplary implementations comprise one or more receivers and one or more transmitters. Exemplary transmitters contain two orthogonal rotors that each emit a fan-shaped laser beam. Each beam is swept as the rotors are spun at constant speed. Exemplary optical receivers can be relatively small, and mounted at convenient locations on the VR display. These receivers consist of small optical detectors that may be mounted on head-mounted VR displays. Exemplary systems determine position by measuring the time at which each swept beam crosses each receiver/detector.

    Positional tracking systems and methods
    3.
    发明授权
    Positional tracking systems and methods 有权

    公开(公告)号：US10338186B2

    公开(公告)日：2019-07-02

    申请号：US14937844

    申请日：2015-11-10

    Applicant: VALVE CORPORATION

    Inventor： Alan Yates ,  Jeremy Selan

    IPC: G01S1/70 ,  G01S7/481

    Abstract: Optical positional tracking systems that may be used in virtual reality (VR)/augmented reality (AR) applications are described. Exemplary implementations comprise one or more receivers and one or more transmitters. Exemplary transmitters contains two orthogonal rotors that each emit a fan-shaped laser beam. Each beam is swept as the rotors are spun at constant speed. Exemplary optical receivers can be relatively small, and mounted at convenient locations on the VR display. These receivers consist of small optical detectors that may be mounted on head-mounted VR displays. Exemplary systems determine position by measuring the time at which each swept beam crosses each receiver/detector.

    Positional tracking systems and methods
    6.
    发明授权
    Positional tracking systems and methods 有权

    公开(公告)号：US12013487B2

    公开(公告)日：2024-06-18

    申请号：US17839185

    申请日：2022-06-13

    Applicant: Valve Corporation

    Inventor： Alan Yates ,  Jeremy Adam Selan

    IPC: G01S7/481 ,  G01S7/4912 ,  G01S17/00 ,  G02B27/01

    CPC classification number: G01S7/481 ,  G01S7/4917 ,  G01S7/4814 ,  G01S17/003 ,  G02B27/0172

    Abstract: Optical positional tracking systems that may be used in virtual reality (VR)/augmented reality (AR) applications are described. Exemplary implementations comprise one or more receivers and one or more transmitters. Exemplary transmitters contain two orthogonal rotors that each emit a fan-shaped laser beam. Each beam is swept as the rotors are spun at constant speed. Exemplary optical receivers can be relatively small, and mounted at convenient locations on the VR display. These receivers consist of small optical detectors that may be mounted on head-mounted VR displays. Exemplary systems determine position by measuring the time at which each swept beam crosses each receiver/detector.

    Position tracking system for head-mounted display systems that includes angle sensitive detectors
    7.
    发明授权
    Position tracking system for head-mounted display systems that includes angle sensitive detectors 有权

    公开(公告)号：US11209657B2

    公开(公告)日：2021-12-28

    申请号：US16752478

    申请日：2020-01-24

    Applicant: Valve Corporation

    Inventor： Joshua Hudman ,  Alan Yates ,  Gordon Wayne Stoll ,  Evan Fletcher

    IPC: G06F3/0346 ,  G02B27/01 ,  G06F3/01

    Abstract: Systems and methods for tracking the position of a head-mounted display (HMD) system component, such as a wearable HMD device or a hand-held controller. The HMD component may include a support structure that carries a plurality of angle sensitive detectors that are able to detect the angle of arrival of light emitted from a light source. A processor causes light sources to emit light according a specified pattern, and receive sensor data from the plurality of angle sensitive detectors. The processor may process the received sensor data using machine learning or other techniques to track a position of the head-mounted display component based on the processing of the received sensor data.

    EYE TRACKING SYSTEM FOR HEAD-MOUNTED DISPLAY DEVICES
    8.
    发明申请
    EYE TRACKING SYSTEM FOR HEAD-MOUNTED DISPLAY DEVICES 有权

    公开(公告)号：US20210232216A1

    公开(公告)日：2021-07-29

    申请号：US16773840

    申请日：2020-01-27

    Applicant: Valve Corporation

    Inventor： Joshua Hudman ,  Alan Yates ,  Gordon Wayne Stoll ,  Evan Fletcher

    IPC: G06F3/01 ,  G06N3/08 ,  G01J1/04 ,  G01J1/42

    Abstract: The present disclosure is directed to systems and methods of eye tracking for use in various applications, such as virtual reality or augmented reality applications that include head-mounted display devices. An eye tracking subsystem may be provided that includes a plurality of assemblies that each include a light source, such as an LED, a light detector, such as a silicon photodiode, and a polarizer that is configured to prevent light reflected via specular reflection from reaching the light detectors so that only scattered light is detected by the light detectors. Machine learning or other techniques may be used to track or otherwise determine a user's gaze direction, which may be used by one or more components of an HMD device to improve its functionality in various ways.

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