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    Electronic Device with Optical Angle Sensor
    1.
    发明公开
    Electronic Device with Optical Angle Sensor 审中-公开

    公开(公告)号：US20240247929A1

    公开(公告)日：2024-07-25

    申请号：US18505965

    申请日：2023-11-09

    Applicant: Apple Inc.

    Inventor： Ruonan Yang ,  David D. Dashevsky ,  Dong Zheng

    IPC: G01B11/26 ,  G06F1/16

    CPC classification number: G01B11/26 ,  G06F1/1681

    Abstract: An electronic device can include housing with first and second housing portions configured to rotate relative to one another about a hinge, a hinge angle encoder that rotates with the hinge, an emitter that emits light towards the hinge angle encoder, and a sensor die that receives light reflecting back from the hinge angle encoder. The hinge angle encoder may include an absorptive polarizing filter layer and a reflective diffuser layer. A pixelated polarizer may be formed overlapping an array of photodetectors in the sensor die. The electronic device may include processing circuitry configured to compute a hinge angle by which the first and second housing portions are rotated based on one or more intensity values acquired using the array of photodetectors.

    Behind Display Polarized Optical Transceiver
    2.
    发明申请
    Behind Display Polarized Optical Transceiver 有权

    公开(公告)号：US20220035200A1

    公开(公告)日：2022-02-03

    申请号：US16945174

    申请日：2020-07-31

    Applicant: Apple Inc.

    Inventor： Tong Chen ,  Mark T. Winkler ,  Ruonan Yang ,  Tsu-Hui Lin ,  Wenrui Cai ,  Xiao Xiang

    IPC: G02F1/1335 ,  G06F3/041 ,  G06F1/16 ,  G02F1/13363

    Abstract: Configurations for display stacks of an electronic device and methods for mitigating crosstalk are disclosed. The display stack may include a transceiver module, which may be located under or behind the display. The transceiver module may include a transmitter module, which may provide polarized light from the transmitter that may suppress module crosstalk. The transceiver module also may include a receiver module, which may include polarization control elements and an analyzer for differentiating between a target signal and a crosstalk signal. The polarization control on both the transmitter module and receiver module sides may suppress the crosstalk signals, which may be due to the reflections between and within the elements of the display stack and resulting from positioning the transceiver module behind the display.

    Cylindrical Retroreflector Array for Rotation Tracking
    3.
    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.

    Behind display polarized optical transceiver
    7.
    发明授权
    Behind display polarized optical transceiver 有权

    公开(公告)号：US11487859B2

    公开(公告)日：2022-11-01

    申请号：US16945174

    申请日：2020-07-31

    Applicant: Apple Inc.

    Inventor： Tong Chen ,  Mark T. Winkler ,  Ruonan Yang ,  Tsu-Hui Lin ,  Wenrui Cai ,  Xiao Xiang

    IPC: G06F21/32 ,  G02F1/1335 ,  G06F3/041 ,  G02F1/13363 ,  G06F1/16

    Abstract: Configurations for display stacks of an electronic device and methods for mitigating crosstalk are disclosed. The display stack may include a transceiver module, which may be located under or behind the display. The transceiver module may include a transmitter module, which may provide polarized light from the transmitter that may suppress module crosstalk. The transceiver module also may include a receiver module, which may include polarization control elements and an analyzer for differentiating between a target signal and a crosstalk signal. The polarization control on both the transmitter module and receiver module sides may suppress the crosstalk signals, which may be due to the reflections between and within the elements of the display stack and resulting from positioning the transceiver module behind the display.

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