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    Waveguide-based interferometric multi-point/distributed force and touch sensors
    12.
    发明授权
    Waveguide-based interferometric multi-point/distributed force and touch sensors 有权

    公开(公告)号：US10824275B2

    公开(公告)日：2020-11-03

    申请号：US16141888

    申请日：2018-09-25

    Applicant: Apple Inc.

    Inventor： Mehmet Mutlu ,  Tong Chen ,  Mark T. Winkler ,  Omid Momtahan

    IPC: G06F3/042 ,  G02B6/42

    Abstract: Disclosed herein are structures, devices, and systems for detecting touch and force inputs at multiple sensing locations on a surface of an electronic device using waveguide-based interferometry. A laser light source, such as a VCSEL, inserts light into a waveguide positioned adjacent to the sensing locations, and an input at a sensing location alters the inserted light in the waveguide allowing for determination of the input's touch or force at the sensing location. Wavelength modulation of the inserted light allows isolation in frequency of the signals from each sensing location. Optical phase locking can be used to lock an absolute distance beat frequency corresponding to a stationary reference point in the waveguide.

    Waveguide-Based Interferometric Multi-Point/Distributed Force and Touch Sensors
    13.
    发明申请
    Waveguide-Based Interferometric Multi-Point/Distributed Force and Touch Sensors 审中-公开

    公开(公告)号：US20200097124A1

    公开(公告)日：2020-03-26

    申请号：US16141888

    申请日：2018-09-25

    Applicant: Apple Inc.

    Inventor： Mehmet Mutlu ,  Tong Chen ,  Mark T. Winkler ,  Omid Momtahan

    IPC: G06F3/042 ,  G02B6/42

    Abstract: Disclosed herein are structures, devices, and systems for detecting touch and force inputs at multiple sensing locations on a surface of an electronic device using waveguide-based interferometry. A laser light source, such as a VCSEL, inserts light into a waveguide positioned adjacent to the sensing locations, and an input at a sensing location alters the inserted light in the waveguide allowing for determination of the input's touch or force at the sensing location. Wavelength modulation of the inserted light allows isolation in frequency of the signals from each sensing location. Optical phase locking can be used to lock an absolute distance beat frequency corresponding to a stationary reference point in the waveguide.

    Configuration and Operation of Array of Self-Mixing Interferometry Sensors
    16.
    发明申请
    Configuration and Operation of Array of Self-Mixing Interferometry Sensors 有权

    公开(公告)号：US20220155052A1

    公开(公告)日：2022-05-19

    申请号：US17665320

    申请日：2022-02-04

    Applicant: Apple Inc.

    Inventor： Mehmet Mutlu ,  Mark T. Winkler ,  Tong Chen ,  Omid Momtahan

    IPC: G01B9/02 ,  H01S5/14 ,  H01S5/06 ,  H01S5/026 ,  G01S7/4912

    Abstract: A sensor system includes a self-mixing interferometry sensor; a drive circuit configured to apply a modulated drive signal to an input of the self-mixing interferometry sensor; a mixer circuit configured to mix a modulated output of the self-mixing interferometry sensor with a local oscillator signal that is orthogonal to the modulated drive signal over a period of time; an integrator circuit configured to integrate an output of the mixer circuit over the period of time; and a processor configured to determine, using an output of the integrator circuit, at least one of a round-trip propagation time of electromagnetic radiation emitted by the self-mixing interferometry sensor and reflected back into the self-mixing interferometry sensor by an object or medium, or a velocity of the object or medium.

    Waveguide-Based Interferometric Multi-Point/Distributed Force and Touch Sensors
    19.
    发明申请
    Waveguide-Based Interferometric Multi-Point/Distributed Force and Touch Sensors 审中-公开

    公开(公告)号：US20200097125A1

    公开(公告)日：2020-03-26

    申请号：US16141912

    申请日：2018-09-25

    Applicant: Apple Inc.

    Inventor： Mehmet Mutlu ,  Tong Chen ,  Mark T. Winkler ,  Omid Momtahan

    IPC: G06F3/042 ,  G02B6/42

    Abstract: Disclosed herein are structures, devices, and systems for detecting touch and force inputs at multiple sensing locations on a surface of an electronic device using waveguide-based interferometry. A laser light source, such as a VCSEL, inserts light into a waveguide positioned adjacent to the sensing locations, and an input at a sensing location alters the inserted light in the waveguide allowing for determination of the input's touch or force at the sensing location. Wavelength modulation of the inserted light allows isolation in frequency of the signals from each sensing location. Optical phase locking can be used to lock an absolute distance beat frequency corresponding to a stationary reference point in the waveguide.

    Device awareness in line-of-sight optical communication systems
    20.
    发明授权
    Device awareness in line-of-sight optical communication systems 有权

    公开(公告)号：US10523318B2

    公开(公告)日：2019-12-31

    申请号：US16399943

    申请日：2019-04-30

    Applicant: Apple Inc.

    Inventor： Tong Chen ,  Mark T. Winkler ,  Wenrui Cai ,  Mehmet Mutlu ,  Omid Momtahan ,  Orit A. Shamir

    IPC: H04B10/112 ,  G02B27/09 ,  H04L5/00 ,  H04L7/00

    Abstract: Techniques are disclosed by which electronic devices that include line-of-sight optical communication systems may become optically aware of other electronic devices and perform optical communication handshakes with other devices. An electronic device may use a motion sensor to record its posing when it determines, during the performance of an optical communication handshake, that it is pointed at the electronic device with which it is performing the optical communication handshake (or that the other electronic device is within a field of view of the electronic device). A recorded device posing, in combination with optical communications and motion sensor data, may also be used to map another device's location and enable a user of an electronic device to pan away from and break optical communication with the other device, then easily return to a recorded posing that enables a continuation of optical communications with the other device.

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