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    Optical systems with flare-mitigating angular filters
    3.
    发明授权
    Optical systems with flare-mitigating angular filters 有权

    公开(公告)号：US12228734B2

    公开(公告)日：2025-02-18

    申请号：US17476642

    申请日：2021-09-16

    Applicant: Apple Inc.

    Inventor： Jonathan B. Pfeiffer ,  Adam C. Urness

    IPC: G02B27/01 ,  G02B6/34

    Abstract: An electronic device may include a display with an optical combiner. The combiner may include a waveguide and a cross coupler on the waveguide. The combiner may redirect light from a display module to an eye box while passing world light to the eye box within a field of view. The cross coupler may include surface relief gratings or other broadband gratings. The combiner may include an angular filter that at least partially overlaps the cross coupler. The cross coupler may include surface relief grating structures or other broadband gratings. The angular filter may include angled absorbers or diffractive gratings. The angular filter may prevent world light that would otherwise produce distracting flares at the eye box (e.g., world light incident on the waveguide outside the field of view such as high-incident angle light from an overhead light source) from passing to the cross coupler.

    Waveguide display with gaze tracking
    4.
    发明授权
    Waveguide display with gaze tracking 有权

    公开(公告)号：US12216282B2

    公开(公告)日：2025-02-04

    申请号：US18262902

    申请日：2022-02-04

    Applicant: Apple Inc.

    Inventor： Francesco Aieta ,  Byron R. Cocilovo ,  Jonathan B. Pfeiffer ,  Se Baek Oh

    IPC: G02B27/01 ,  F21V8/00 ,  G02B5/32 ,  G02B27/00

    Abstract: A display may include a waveguide. An input coupler may couple image light into the waveguide and an output coupler may couple the image light out of the waveguide. A surface relief grating on the waveguide may couple infrared light into the waveguide and may couple the infrared light out of the waveguide. The surface relief grating may additionally or alternatively couple reflected infrared light into the waveguide and out of the waveguide and towards an infrared sensor. The surface relief grating may also form a cross-coupler for the image light. The infrared sensor may gather infrared sensor data based on the reflected infrared light. Control circuitry may perform gaze tracking operations based on the infrared sensor data. The input and output couplers may also be formed from surface relief gratings or may include other optical components.

    Optical Systems with Resolution-Enhancing Holographic Elements
    6.
    发明申请
    Optical Systems with Resolution-Enhancing Holographic Elements 有权

    公开(公告)号：US20210405380A1

    公开(公告)日：2021-12-30

    申请号：US17475080

    申请日：2021-09-14

    Applicant: Apple Inc.

    Inventor： Adam C. Urness ,  Byron R. Cocilovo ,  Jonathan B. Pfeiffer

    IPC: G02B27/01 ,  F21V8/00 ,  G03H1/02

    Abstract: An electronic device may include an optical system that redirects light from a display module towards an eye box along an optical path. The optical path may include a holographic coupler and a resolution-enhancing holographic element. The holographic element may include a first set of holograms and the coupler may include a second set of holograms. The first set of holograms may be characterized by a first set of selectivity curves having first primary lobes. The second set of holograms may be characterized by a second set of selectivity curves having second primary lobes that overlap the first primary lobes. This may configure the holographic element to narrow the second selectivity curves by diffracting some of the light out of the optical path, thereby optimizing the resolution of images in the light provided to the eye box.

    Optical Systems Having Gradient Index Optical Structures
    7.
    发明申请
    Optical Systems Having Gradient Index Optical Structures 有权

    公开(公告)号：US20220011496A1

    公开(公告)日：2022-01-13

    申请号：US17482149

    申请日：2021-09-22

    Applicant: Apple Inc.

    Inventor： Vikrant Bhakta ,  Scott M. DeLapp ,  Jonathan B. Pfeiffer ,  Hyungryul Choi ,  Guolin Peng

    IPC: F21V8/00 ,  G02B27/01 ,  G02B3/00 ,  G02B6/34

    Abstract: An electronic device may include a waveguide with an input coupler and an output coupler. The input coupler may receive the image light from imaging optics. The input coupler may be an input coupling prism and the imaging optics may include lens elements. World light may be viewable at an eye box through the output coupler. Biasing, compensation, and/or prescription lenses may overlap the output coupler. The input coupling prism, the lens elements in the imaging optics, and/or one or more of the biasing, compensation, and prescription lenses may be formed from gradient index (GRIN) material. The GRIN material may have a gradient refractive index that varies in one or more gradient directions. Use of GRIN materials may minimize the volume required to form the device without sacrificing optical performance. In addition, the GRIN materials may compensate for dispersion and aberrations in the device.

    Optical Systems with Flare-Mitigating Angular Filters
    8.
    发明申请
    Optical Systems with Flare-Mitigating Angular Filters 有权

    公开(公告)号：US20220004006A1

    公开(公告)日：2022-01-06

    申请号：US17476642

    申请日：2021-09-16

    Applicant: Apple Inc.

    Inventor： Jonathan B. Pfeiffer ,  Adam C. Urness

    IPC: G02B27/01 ,  G02B6/34

    Abstract: An electronic device may include a display with an optical combiner. The combiner may include a waveguide and a cross coupler on the waveguide. The combiner may redirect light from a display module to an eye box while passing world light to the eye box within a field of view. The cross coupler may include surface relief gratings or other broadband gratings. The combiner may include an angular filter that at least partially overlaps the cross coupler. The cross coupler may include surface relief grating structures or other broadband gratings. The angular filter may include angled absorbers or diffractive gratings. The angular filter may prevent world light that would otherwise produce distracting flares at the eye box (e.g., world light incident on the waveguide outside the field of view such as high-incident angle light from an overhead light source) from passing to the cross coupler.

    Optical Systems with Authentication and Privacy Capabilities
    9.
    发明申请
    Optical Systems with Authentication and Privacy Capabilities 有权

    公开(公告)号：US20210303851A1

    公开(公告)日：2021-09-30

    申请号：US17171864

    申请日：2021-02-09

    Applicant: Apple Inc.

    Inventor： Christopher M. Dodson ,  Jonathan B. Pfeiffer

    IPC: G06K9/00 ,  G02B27/01 ,  G03H1/02 ,  F21V8/00 ,  H04N5/33

    Abstract: A head-mounted electronic device may include a display with an optical combiner. The combiner may include a waveguide with first and second output couplers. The first output coupler may couple a first portion of image light at visible wavelengths out of the waveguide and towards an eye box. The second output coupler may couple a second portion of the image light at near-infrared wavelengths out of the waveguide and towards the surrounding environment. The second portion of the image light may include an authentication code that is used by a secondary device to authenticate the head-mounted device and/or may include a pattern that serves to prevent camera equipment in the surrounding environment from capturing accurate facial recognition information from a user while wearing the head-mounted device.

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