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    DISPLAY DEVICE HAVING COMMON LIGHT PATH REGION
    2.
    发明公开
    DISPLAY DEVICE HAVING COMMON LIGHT PATH REGION 审中-公开

    公开(公告)号：US20230228996A1

    公开(公告)日：2023-07-20

    申请号：US17648534

    申请日：2022-01-20

    Applicant: Microsoft Technology Licensing, LLC

    Inventor： Ishan Chatterjee ,  Dmitry RESHIDKO

    IPC: G02B27/01 ,  G02F1/1362 ,  G02B26/08

    CPC classification number: G02B27/0172 ,  G02F1/136277 ,  G02B26/0833 ,  G02F2203/12 ,  G02B2027/0178 ,  G02B6/26

    Abstract: Examples are disclosed that relate to display devices having a common light path region. One example provides a display device comprising a light source configured to emit illumination light along an illumination path, and a spatial light modulator configured to modulate the illumination light and emit the modulated illumination light as image light along an imaging path, wherein at least a portion of the illumination path and at least a portion of the imaging path extend through a common light path region. The display device further comprises one or more optical elements positioned within the common light path region, at least one optical element being configured to guide the illumination light as the illumination light travels through the common light path region toward the spatial light modulator, and shape the image light as the image light travels through the common light path region.

    EYE TRACKER ILLUMINATION THROUGH A WAVEGUIDE
    3.
    发明申请
    EYE TRACKER ILLUMINATION THROUGH A WAVEGUIDE 有权

    公开(公告)号：US20220300073A1

    公开(公告)日：2022-09-22

    申请号：US17208880

    申请日：2021-03-22

    Applicant: Microsoft Technology Licensing, LLC

    Inventor： Dmitry RESHIDKO ,  Congshan WAN

    IPC: G06F3/01 ,  G02B27/00 ,  G02B27/01 ,  G06K9/00 ,  G06K9/46 ,  G06T19/00

    Abstract: In a see-through waveguide-based HMD device configured to display holographic virtual images within a field of view (FOV) of the device user, a single pixel or group of pixels are lit to supply illumination at known locations on the display that is reflected from the user's eyes and captured by one or more sensors in an eye tracker. The eye tracker may apply real-time image analysis to the captured reflected light, called “glints,” to extract features of the user's eyes to determine where the HMD device user is looking—the gaze point—and calculate eye movement, location, and orientation. A negative lens functionality utilized in the HMD device to provide a fixed focal depth for the virtual images enables the lit pixels to function as virtual glint sources for the eye tracker sensor that are located at the fixed focal depth and from multiple illumination positions within the user's FOV.

    MONITORING POSITION AND ORIENTATION OF A PROJECTOR
    5.
    发明公开
    MONITORING POSITION AND ORIENTATION OF A PROJECTOR 审中-公开

    公开(公告)号：US20230239443A1

    公开(公告)日：2023-07-27

    申请号：US17584976

    申请日：2022-01-26

    Applicant: Microsoft Technology Licensing, LLC.

    Inventor： Parry Byron JOHNSON ,  Dmitriy CHURIN ,  Dmitry RESHIDKO

    IPC: H04N9/31

    CPC classification number: H04N9/3191 ,  H04N9/3161 ,  H04N9/3176

    Abstract: A projection system includes an illumination light source configured to emit an illumination light beam, a monitor light source configured to emit a monitor light beam, and a projector configured to project both the illumination light beam and the monitor light beam into a projected combined light beam. A first portion of the projected combined light beam is propagated over a first beam path in a first direction, causing an eye of a user to see a display image. A second portion of the projected combined light beam is propagated over a second beam path in a second direction, causing a monitor camera to capture a monitor image. The monitor image is analyzed to determine an orientation or a position of the monitor image. In response to determining that the monitor image is not properly oriented or positioned, an orientation or position of the projector or the illumination image is adjusted.

    COMBINED BIREFRINGENT MATERIAL AND REFLECTIVE WAVEGUIDE FOR MULTIPLE FOCAL PLANES IN A MIXED-REALITY HEAD-MOUNTED DISPLAY DEVICE
    6.
    发明申请
    COMBINED BIREFRINGENT MATERIAL AND REFLECTIVE WAVEGUIDE FOR MULTIPLE FOCAL PLANES IN A MIXED-REALITY HEAD-MOUNTED DISPLAY DEVICE 有权

    公开(公告)号：US20230103091A1

    公开(公告)日：2023-03-30

    申请号：US17448890

    申请日：2021-09-26

    Applicant: Microsoft Technology Licensing, LLC

    Inventor： Robert Thomas HELD ,  Bernard Charles KRESS ,  Ashley SAULSBURY ,  Dmitry RESHIDKO

    IPC: G02B27/01 ,  G02F1/29 ,  G02B27/28 ,  G09G3/00

    Abstract: An optical combiner in a display system of a mixed-reality head-mounted display (HMD) device comprises a lens of birefringent material and a ferroelectric liquid crystal (FLC) modulator that are adapted for use with a reflective waveguide to provide multiple different focal planes on which holograms of virtual-world objects (i.e., virtual images) are displayed. The birefringent lens has two orthogonal refractive indices, ordinary and extraordinary, depending on the polarization state of the incident light. Depending on the rotation of the polarization axis by the FLC modulator, the incoming light to the birefringent lens is focused either at a distance corresponding to the ordinary refractive index or the extraordinary refractive index. Virtual image light leaving the birefringent lens is in-coupled to a see-through reflective waveguide which is configured to form an exit pupil for the optical combiner to enable an HMD device user to view the virtual images from the source.

    MICRO LED DISPLAY SYSTEM
    7.
    发明申请
    MICRO LED DISPLAY SYSTEM 审中-公开

    公开(公告)号：US20200271932A1

    公开(公告)日：2020-08-27

    申请号：US16281805

    申请日：2019-02-21

    Applicant: Microsoft Technology Licensing, LLC

    Inventor： Pietari TUOMISTO ,  William J. CUMMINGS ,  Dmitry RESHIDKO ,  Tuomas VALLIUS ,  David Douglas BOHN

    IPC: G02B27/01 ,  G02B27/09 ,  G02B27/10 ,  G06T19/00

    Abstract: MicroLED arrays offer a small form factor solution for the HMD image sources since they do not need a separate illumination optics. Features of the present disclosure implement a MicroLED display system that incorporate a plurality of monochrome projectors (e.g., three MicroLED projectors) to generate three monochrome images (e.g., red, blue, and green images) that are separately input into a single waveguide of the HMD and combined to form an image that is displayed to the user. By utilizing a single waveguide that includes a plurality of spatially separated input regions (e.g., a region for inputting blue light, a region for inputting red light, a region for inputting green light), the MicroLED display system of the present disclosure may reduce the form factor of the HMD device because of the reduced number of plates that may be required to combine the three monochrome images.

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