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    Self-mixing interferometry-based input device
    1.
    发明授权
    Self-mixing interferometry-based input device 有权

    公开(公告)号：US11861072B2

    公开(公告)日：2024-01-02

    申请号：US17883258

    申请日：2022-08-08

    Applicant: Apple Inc.

    Inventor： Mehmet Mutlu ,  Ahmet Fatih Cihan ,  Mark T. Winkler ,  Tong Chen

    IPC: G06F3/01 ,  G01S17/50

    CPC classification number: G06F3/017 ,  G01S17/50 ,  G06F3/014

    Abstract: A wearable device includes a device housing configured to be worn on a first surface of a user, a set of one or more SMI sensors, and a processor. The set of one or more SMI sensors is mounted within the device housing and configured to emit a set of one or more beams of electromagnetic radiation, with each beam emitted in a different direction extending away from the first surface. The set of one or more SMI sensors is also configured to generate a set of one or more SMI signals containing information about a relationship between the device housing and a second surface. The processor is configured to extract the relationship between the device housing and the second surface from digitized samples of the set of one or more SMI signals.

    Self-Mixing Interferometry-Based Input Device
    2.
    发明申请
    Self-Mixing Interferometry-Based Input Device 有权

    公开(公告)号：US20220382384A1

    公开(公告)日：2022-12-01

    申请号：US17883258

    申请日：2022-08-08

    Applicant: Apple Inc.

    Inventor： Mehmet Mutlu ,  Ahmet Fatih Cihan ,  Mark T. Winkler ,  Tong Chen

    IPC: G06F3/01 ,  G01S17/50

    Abstract: A wearable device includes a device housing configured to be worn on a first surface of a user, a set of one or more SMI sensors, and a processor. The set of one or more SMI sensors is mounted within the device housing and configured to emit a set of one or more beams of electromagnetic radiation, with each beam emitted in a different direction extending away from the first surface. The set of one or more SMI sensors is also configured to generate a set of one or more SMI signals containing information about a relationship between the device housing and a second surface. The processor is configured to extract the relationship between the device housing and the second surface from digitized samples of the set of one or more SMI signals.

    Wearable Voice-Induced Vibration or Silent Gesture Sensor
    4.
    发明申请
    Wearable Voice-Induced Vibration or Silent Gesture Sensor 审中-公开

    公开(公告)号：US20200370879A1

    公开(公告)日：2020-11-26

    申请号：US16849826

    申请日：2020-04-15

    Applicant: Apple Inc.

    Inventor： Mehmet Mutlu ,  Ahmet Fatih Cihan

    IPC: G01B9/02 ,  G06F3/01 ,  G06F3/16 ,  H04R1/10

    Abstract: Disclosed herein are wearable devices, their configurations, and methods of operation that use self-mixing interferometry signals of a self-mixing interferometry sensor to recognize user inputs. The user inputs may include voiced commands or silent gesture commands. The devices may be wearable on the user's head, with the self-mixing interferometry sensor configured to direct a beam of light toward a location on the user's head. Skin deformations or vibrations at the location may be caused by the user's speech or the user's silent gestures and recognized using the self-mixing interferometry signal. The self-mixing interferometry signals may be used for bioauthentication and/or audio conditioning of received sound or voice inputs to a microphone.

    Optical sensor module including an interferometric sensor and extended depth of focus optics
    5.
    发明授权
    Optical sensor module including an interferometric sensor and extended depth of focus optics 有权

    公开(公告)号：US12209890B2

    公开(公告)日：2025-01-28

    申请号：US17710682

    申请日：2022-03-31

    Applicant: Apple Inc.

    Inventor： Tong Chen ,  Ahmet Fatih Cihan ,  Daryl I. Vulis ,  Mingzhou Jin

    IPC: G01N15/1434 ,  G01D5/26 ,  G01J9/02 ,  G06F3/01 ,  G06F3/03 ,  G06F3/0354

    Abstract: An optical sensor module includes an interferometric sensor and a set of one or more optical elements. The interferometric sensor includes a coherent light source and at least one detector configured to generate an interferometric signal. The set of one or more optical elements is configured to simultaneously direct a first portion of light emitted by the coherent light source toward a first focus area within a first depth of focus; direct a second portion of the light emitted by the coherent light source toward a second focus area within a second depth of focus; and direct portions of the emitted light that are returned from one or more objects within the first depth of focus or the second depth of focus toward the interferometric sensor.

    Self-mixing interferometry-based absolute distance measurement with distance reference
    7.
    发明授权
    Self-mixing interferometry-based absolute distance measurement with distance reference 有权

    公开(公告)号：US11692809B2

    公开(公告)日：2023-07-04

    申请号：US16945573

    申请日：2020-07-31

    Applicant: Apple Inc.

    Inventor： Ahmet Fatih Cihan ,  Mehmet Mutlu

    IPC: G01P3/36 ,  G01B9/02 ,  G01P5/26 ,  G01S17/58

    CPC classification number: G01B9/02092 ,  G01P5/26 ,  G01S17/58

    Abstract: A device includes a first component, a second component having a reconfigurable distance from the first component, an optical element, an SMI sensor, and a processor. The optical element has a fixed relationship with respect to the first component, and has a known optical thickness between a first surface and a second surface of the optical element. The SMI sensor has a fixed relationship with respect to the second component, and has an electromagnetic radiation emission axis that intersects the first and second surfaces of the optical element. The processor is configured to identify disturbances in an SMI signal generated by the SMI sensor, relate the disturbances to the known optical thickness of the optical element, and to determine a distance between the first and second components using the SMI signal and the relationship of the disturbances to the known optical thickness of the optical element.

    Finger Devices with Self-Mixing Interferometric Proximity Sensors
    8.
    发明申请
    Finger Devices with Self-Mixing Interferometric Proximity Sensors 有权

    公开(公告)号：US20230073039A1

    公开(公告)日：2023-03-09

    申请号：US17465594

    申请日：2021-09-02

    Applicant: Apple Inc.

    Inventor： Mengshu Huang ,  Ahmet Fatih Cihan ,  Adrian Z. Harb ,  Stephen E. Dey ,  Yuhao Pan ,  Mehmet Mutlu

    IPC: G01C3/08 ,  G06F3/01

    Abstract: A system may include one or more finger devices that gather input from a user's fingers. A finger device may include one or more self-mixing interferometric proximity sensors that measure a distance to the user's finger. The proximity sensor may measure changes in distance between the proximity sensor and a flexible membrane that rests against a side portion of the user's finger. The self-mixing interferometric proximity sensor may include a laser and a photodiode. In some arrangements, a single laser driver may drive the lasers of multiple self-mixing proximity sensors using time-multiplexing. The self-mixing proximity sensor may operate according to a duty cycle. Interpolation and stitching may be used to determine the total displacement of the user's finger including both the on periods and off periods of the self-mixing proximity sensor.

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