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    Surface Confined Self-Mixing Interferometry Through Frustrated Total Internal Reflection for an Electronic Device
    2.
    发明申请
    Surface Confined Self-Mixing Interferometry Through Frustrated Total Internal Reflection for an Electronic Device 有权

    公开(公告)号：US20210294489A1

    公开(公告)日：2021-09-23

    申请号：US16827646

    申请日：2020-03-23

    Applicant: Apple Inc.

    Inventor： Xin Li ,  David D. Dashevsky ,  Sriram Moorthy

    IPC: G06F3/0488 ,  G04G21/08 ,  G01B9/02

    Abstract: A self-mixing interference sensor may be positioned within an electronic device and may be configured to detect a gesture on a user input surface of the electronic device. A beam of electromagnetic radiation may be emitted from the self-mixing interference sensor toward the user input surface. When an object with a suitable refractive index is not in contact with the user input surface, the beam of electromagnetic radiation may reflect away from the self-mixing interference sensor. When an object with a suitable refractive index is in contact with the user input surface, the beam of electromagnetic radiation may reflect back into the self-mixing interference sensor and may undergo a self-mixing process. A property of the object in contact with the surface of the user input device may be detected by measuring a change in an optical property of the beam of electromagnetic radiation.

    Electronic Devices With Optical Identification Sensor
    3.
    发明公开
    Electronic Devices With Optical Identification Sensor 审中-公开

    公开(公告)号：US20230385591A1

    公开(公告)日：2023-11-30

    申请号：US18446228

    申请日：2023-08-08

    Applicant: Apple Inc.

    Inventor： David D. Dashevsky ,  Brian S. Pearson ,  Dong Zheng ,  Eugene C. Cheung ,  Kenneth J. Vampola

    IPC: G06K19/077 ,  G06K7/12 ,  G09F3/00

    CPC classification number: G06K19/07762 ,  G06K7/12 ,  G09F3/005 ,  G06K2007/10485

    Abstract: An electronic device may be attached to an external item. The electronic device may include an optical identification sensor configured to sense a color-encoded tag in the external item when the item is attached to the device. The optical identification sensor may include a board layer, a protective filter layer, wall structures for supporting the protective filter layer on the board layer, a linear array of photodetectors disposed between the board layer and the protective filter layer, a field-of-view restriction filter interposed between the photodetectors and the protective filter layer, and a light source having multiple emitters for illuminating the color-encoded tag. The emitters may be activated sequentially to produce multiple images that are combined to reconstruct an accurate reading of the color-encoded tag, which can then be used to identify the type of external item currently attached to the electronic device.

    Coherent mixing interference based sensors for characterizing movement of a watch crown
    4.
    发明授权
    Coherent mixing interference based sensors for characterizing movement of a watch crown 有权

    公开(公告)号：US11644800B2

    公开(公告)日：2023-05-09

    申请号：US17472386

    申请日：2021-09-10

    Applicant: Apple Inc.

    Inventor： Prashanth S. Holenarsipur ,  Mark T. Winkler ,  Mehmet Mutlu ,  David D. Dashevsky

    IPC: G04G21/08 ,  G01D5/34

    CPC classification number: G04G21/08 ,  G01D5/34

    Abstract: An electronic watch includes a housing, a user-operable watch crown mounted to the housing, an electromagnetic radiation source emitting a beam of electromagnetic radiation toward a watch crown surface, and a sensor. The beam of electromagnetic radiation depends on a coherent mixing of electromagnetic radiation within a resonant cavity of the electromagnetic radiation source. The coherent mixing includes a mixing of a first amount of electromagnetic radiation generated by the electromagnetic radiation source and a second amount of electromagnetic radiation redirected into the resonant cavity by the watch crown surface. The sensor measures a first parameter of the beam of electromagnetic radiation and determines, using the measurement of the first parameter, a value of a second parameter characterizing movement of the watch crown. The second parameter may include a direction of rotation or speed of rotation of the watch crown, or other parameters.

    Coherent Mixing Interference Based Sensors for Characterizing Movement of a Watch Crown
    5.
    发明申请
    Coherent Mixing Interference Based Sensors for Characterizing Movement of a Watch Crown 审中-公开

    公开(公告)号：US20190317454A1

    公开(公告)日：2019-10-17

    申请号：US16379551

    申请日：2019-04-09

    Applicant: Apple Inc.

    Inventor： Prashanth S. Holenarsipur ,  Mark T. Winkler ,  Mehmet Mutlu ,  David D. Dashevsky

    IPC: G04G21/08 ,  G01D5/34

    Abstract: An electronic watch includes a housing, a user-operable watch crown mounted to the housing, an electromagnetic radiation source emitting a beam of electromagnetic radiation toward a watch crown surface, and a sensor. The beam of electromagnetic radiation depends on a coherent mixing of electromagnetic radiation within a resonant cavity of the electromagnetic radiation source. The coherent mixing includes a mixing of a first amount of electromagnetic radiation generated by the electromagnetic radiation source and a second amount of electromagnetic radiation redirected into the resonant cavity by the watch crown surface. The sensor measures a first parameter of the beam of electromagnetic radiation and determines, using the measurement of the first parameter, a value of a second parameter characterizing movement of the watch crown. The second parameter may include a direction of rotation or speed of rotation of the watch crown, or other parameters.

    OPTICAL SENSORS HAVING AN ABSENCE OF GUARD STRUCTURES BETWEEN ADJACENT PHOTODIODES
    6.
    发明申请
    OPTICAL SENSORS HAVING AN ABSENCE OF GUARD STRUCTURES BETWEEN ADJACENT PHOTODIODES 有权

    公开(公告)号：US20250109970A1

    公开(公告)日：2025-04-03

    申请号：US18671832

    申请日：2024-05-22

    Applicant: Apple Inc.

    Inventor： Anand K. Chamakura ,  Dong Zheng ,  Mieczyslaw M. Dabrowski ,  David D. Dashevsky

    IPC: G01D5/347

    Abstract: An electronic device includes a shared epitaxial structure, an array of photodiodes formed in the shared epitaxial structure, and a readout circuit. The array of photodiodes is disposed between a first axis and a second axis, with the second axis orthogonal to the first axis. The array of photodiodes has an absence of guard structures between adjacent photodiodes. The readout circuit is electrically connected to the array of photodiodes and operable to read out values for different photodiodes or different subsets of photodiodes in the array of photodiodes.

    Electronic devices with optical identification sensor
    7.
    发明授权
    Electronic devices with optical identification sensor 有权

    公开(公告)号：US12033018B2

    公开(公告)日：2024-07-09

    申请号：US18446228

    申请日：2023-08-08

    Applicant: Apple Inc.

    Inventor： David D. Dashevsky ,  Brian S. Pearson ,  Dong Zheng ,  Eugene C. Cheung ,  Kenneth J. Vampola

    IPC: G06K19/077 ,  G06K7/10 ,  G06K7/12 ,  G09F3/00

    CPC classification number: G06K19/07762 ,  G06K7/12 ,  G09F3/005 ,  G06K2007/10485

    Abstract: An electronic device may be attached to an external item. The electronic device may include an optical identification sensor configured to sense a color-encoded tag in the external item when the item is attached to the device. The optical identification sensor may include a board layer, a protective filter layer, wall structures for supporting the protective filter layer on the board layer, a linear array of photodetectors disposed between the board layer and the protective filter layer, a field-of-view restriction filter interposed between the photodetectors and the protective filter layer, and a light source having multiple emitters for illuminating the color-encoded tag. The emitters may be activated sequentially to produce multiple images that are combined to reconstruct an accurate reading of the color-encoded tag, which can then be used to identify the type of external item currently attached to the electronic device.

    Electronic devices with optical identification sensor
    9.
    发明授权
    Electronic devices with optical identification sensor 有权

    公开(公告)号：US11763126B2

    公开(公告)日：2023-09-19

    申请号：US17469673

    申请日：2021-09-08

    Applicant: Apple Inc.

    Inventor： David D. Dashevsky ,  Brian S. Pearson ,  Dong Zheng ,  Eugene C. Cheung ,  Kenneth J. Vampola

    IPC: G06K19/077 ,  G06K7/12 ,  G09F3/00 ,  G06K7/10

    CPC classification number: G06K19/07762 ,  G06K7/12 ,  G09F3/005 ,  G06K2007/10485

    Abstract: An electronic device may be attached to an external item. The electronic device may include an optical identification sensor configured to sense a color-encoded tag in the external item when the item is attached to the device. The optical identification sensor may include a board layer, a protective filter layer, wall structures for supporting the protective filter layer on the board layer, a linear array of photodetectors disposed between the board layer and the protective filter layer, a field-of-view restriction filter interposed between the photodetectors and the protective filter layer, and a light source having multiple emitters for illuminating the color-encoded tag. The emitters may be activated sequentially to produce multiple images that are combined to reconstruct an accurate reading of the color-encoded tag, which can then be used to identify the type of external item currently attached to the electronic device.

    Cylindrical Retroreflector Array for Rotation Tracking
    10.
    发明申请
    Cylindrical Retroreflector Array for Rotation Tracking 有权

    公开(公告)号：US20230086536A1

    公开(公告)日：2023-03-23

    申请号：US17480636

    申请日：2021-09-21

    Applicant: Apple Inc.

    Inventor： Xin Li ,  Damon R. Lemmon ,  David D. Dashevsky ,  Dianbo Guo ,  Peng Zhao ,  Ruonan Yang

    IPC: G01D5/347 ,  G06F3/0362 ,  G06F3/03

    Abstract: An electronic device is described. The electronic device may include a housing, a rotatable crown, and a self-mixing interferometry (SMI) sensor positioned within the housing. The rotatable crown may include an array of retroreflective surface features that reflect incident light back to a light source. Each retroreflective surface feature of the array of retroreflective surface features may be formed as a corner-cube with three perpendicular faces. The SMI sensor or associated processing electronics may compare originally emitted light with reflected light to identify a movement or distance of the rotatable crown with respect to the SMI sensor.

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