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    MULTI-LASER EYE TRACKING SYSTEM
    2.
    发明公开
    MULTI-LASER EYE TRACKING SYSTEM 审中-公开

    公开(公告)号：US20240041321A1

    公开(公告)日：2024-02-08

    申请号：US18489804

    申请日：2023-10-18

    Applicant: Microsoft Technology Licensing, LLC

    Inventor： Gregory Theodore GIBSON ,  Joshua Owen MILLER

    IPC: A61B3/113 ,  A61F9/008

    CPC classification number: A61B3/113 ,  A61F9/008 ,  A61F2009/00846 ,  A61F2009/00872

    Abstract: Techniques are described herein that are capable of tracking an eye of a user using multiple lasers. Light from the lasers is scanned across respective partially overlapping portions of a region that includes an eye of a user during respective time periods. Portion(s) of the light that are reflected from the eye are detected by respective photodetector(s). In an example implementation, a signal corresponding to the detected portion(s) is provided in a pixel of a frame buffer based at least in part on a current angle of a mirror used to scan the light across the region. In a second implementation, digital state(s) are provided based at least in part on difference(s) between a reference signal and signal(s) corresponding to the detected portion(s), and a time value indicating a time at which a glint is detected by a photodetector is provided when a digital state triggers an interrupt handler.

    AMPLITUDE AND BIPHASE CONTROL OF MEMS SCANNING DEVICE
    3.
    发明申请
    AMPLITUDE AND BIPHASE CONTROL OF MEMS SCANNING DEVICE 有权

    公开(公告)号：US20210392310A1

    公开(公告)日：2021-12-16

    申请号：US16901481

    申请日：2020-06-15

    Applicant: Microsoft Technology Licensing, LLC

    Inventor： Michael Edward SAMPLES ,  Mikhail SMIRNOV ,  Jozef Barnabas HOUBEN ,  Damon Marlow DOMJAN ,  Joshua Owen MILLER

    IPC: H04N9/31 ,  G01K13/08 ,  G02B26/08 ,  G02B26/10 ,  G06K9/62

    Abstract: A MEMS scanning device (“Device”) includes at least (1) laser projector(s) controlled by a laser drive to project a laser beam, (2) MEMS scanning mirror(s) controlled by a MEMS drive to scan the laser beam to generate a raster scan, (3) a display configured to receive the raster scan, (4) a thermometer configured to detect a current temperature, (5) a display observing camera configured to capture an image of a predetermined area of the display, and (6) a computer-readable media that stores temperature model(s), each of which is custom-built using machine learning. The device uses the display observing camera to capture image(s) of predetermined pattern(s), which are then used to extract feature(s). The extracted feature(s) are compared with ideal feature(s) to identify a discrepancy. When the identified discrepancy is greater than a threshold, the temperature model(s) are updated accordingly.

    DISPLAY DEVICE WITH COMPACT SCANNING MIRROR
    4.
    发明申请
    DISPLAY DEVICE WITH COMPACT SCANNING MIRROR 审中-公开

    公开(公告)号：US20200319451A1

    公开(公告)日：2020-10-08

    申请号：US16373480

    申请日：2019-04-02

    Applicant: Microsoft Technology Licensing, LLC

    Inventor： Utku BARAN ,  Wyatt Owen DAVIS ,  Joshua Owen MILLER

    IPC: G02B26/10

    Abstract: Examples are disclosed that relate to scanning mirror systems for display devices. One example provides a display device comprising a light source, a support structure, and a scanning mirror system comprising a mirror, a first anchor located at a first lateral side of the scanning mirror system, a second anchor located at a second lateral side of the scanning mirror system, and a flexure. The flexure comprises a first portion extending from the first anchor toward a first longitudinal end and turning to meet a first end of the mirror, and a second portion extending from the second anchor toward a second longitudinal end and turning to meet to a second end of the mirror opposite the first end. The scanning mirror system further comprises an actuator system configured to actuate the flexure to thereby vary a scan angle of the mirror.

    INTEGRATED OPTICAL BEAM STEERING SYSTEM
    5.
    发明申请
    INTEGRATED OPTICAL BEAM STEERING SYSTEM 审中-公开

    公开(公告)号：US20200310030A1

    公开(公告)日：2020-10-01

    申请号：US16445273

    申请日：2019-06-19

    Applicant: Microsoft Technology Licensing, LLC

    Inventor： Joshua Owen MILLER ,  Kai ZANG ,  Wyatt Owen DAVIS ,  Mohammadamin EFTEKHAR

    IPC: G02B6/122 ,  G02B6/293 ,  G02B27/01 ,  G02B6/124 ,  G02B6/35 ,  H04Q11/00 ,  H04J14/02 ,  G02F1/313

    Abstract: An integrated optical beam steering system is configured in three stages to provide beam steering for image light from an imager (e.g., laser, light emitting diode, or other light source) to downstream elements in a display system such as an exit pupil expander (EPE) in a mixed-reality computing device. The first stage includes a multi-level cascaded array of optical switches that are configurable to spatially route image light over a first dimension of a two-dimensional (2D) field of view (FOV) of the display system. The second waveguiding stage transfers the image light along preformed waveguides to a collimator in the third stage which is configured to collimate the image light along the first dimension of the FOV (e.g., horizontal). The waveguiding and collimating stages may be implemented using lightweight photonic crystal nanostructures.

    SYSTEMS AND METHODS OF INCREASING PUPIL SIZE IN A DISPLAY SYSTEM
    6.
    发明申请
    SYSTEMS AND METHODS OF INCREASING PUPIL SIZE IN A DISPLAY SYSTEM 审中-公开

    公开(公告)号：US20190278076A1

    公开(公告)日：2019-09-12

    申请号：US15914698

    申请日：2018-03-07

    Applicant: Microsoft Technology Licensing, LLC

    Inventor： Fei CHEN ,  Joshua Owen MILLER

    IPC: G02B26/08 ,  G06T19/00 ,  G02F1/1335

    Abstract: A display system for presenting visual information to a user includes a fast scan mirror, a slow scan mirror, and anamorphic relay optics positioned optically between the fast scan mirror and slow scan mirror. The fast scan mirror has a fast scan arc in a scan direction of a display light provided by a light source. The slow scan mirror has a slow scan arc in a cross-scan direction of the display light that is perpendicular to the scan direction. The anamorphic relay optics are configured to magnify the display light in the cross-scan direction.

    AMPLITUDE AND BIPHASE CONTROL OF MEMS SCANNING DEVICE
    7.
    发明申请
    AMPLITUDE AND BIPHASE CONTROL OF MEMS SCANNING DEVICE 有权

    公开(公告)号：US20220303513A1

    公开(公告)日：2022-09-22

    申请号：US17832180

    申请日：2022-06-03

    Applicant: Microsoft Technology Licensing, LLC

    Inventor： Michael Edward SAMPLES ,  Mikhail SMIRNOV ,  Jozef Barnabas HOUBEN ,  Damon Marlow DOMJAN ,  Joshua Owen MILLER

    IPC: H04N9/31 ,  G01K13/08 ,  G02B26/08 ,  G02B26/10 ,  G06K9/62

    Abstract: A MEMS scanning device (“Device”) includes at least (1) laser projector(s) controlled by a laser drive to project a laser beam, (2) MEMS scanning mirror(s) controlled by a MEMS drive to scan the laser beam to generate a raster scan, (3) a display configured to receive the raster scan, (4) a thermometer configured to detect a current temperature, (5) a display observing camera configured to capture an image of a predetermined area of the display, and (6) a computer-readable media that stores temperature model(s), each of which is custom-built using machine learning. The device uses the display observing camera to capture image(s) of predetermined pattern(s), which are then used to extract feature(s). The extracted feature(s) are compared with ideal feature(s) to identify a discrepancy. When the identified discrepancy is greater than a threshold, the temperature model(s) are updated accordingly.

    TECHNIQUES FOR REMOVING PARTICULATE FROM AN OPTICAL SURFACE
    8.
    发明申请
    TECHNIQUES FOR REMOVING PARTICULATE FROM AN OPTICAL SURFACE 审中-公开

    公开(公告)号：US20190324262A1

    公开(公告)日：2019-10-24

    申请号：US15956327

    申请日：2018-04-18

    Applicant: Microsoft Technology Licensing, LLC

    Inventor： Joshua Owen MILLER ,  Utku BARAN ,  Wyatt Owen DAVIS

    IPC: G02B26/08 ,  B81B3/00 ,  B81B7/02

    Abstract: The present disclosure generally relates to a method, and apparatus implementing the method for removing particulate accumulation from an optical element of a micro electromechanical systems (MEMS) package. The method may select a cleaning mode based, at least in part on, one or more of output of a sensor or a maintenance routine. Cleaning modes may include actuating, using an actuator of the MEMS package, one of a plurality of motion modes across the optical element. Optionally, the cleaning mode may include applying, using a power source of the MEMS package, a charge to the optical element. The disclosed techniques may enable the MEMS package to automatically and dynamically remove particulate matter without introducing additional mechanical elements.

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