Strain-Insensitive Wave Plate Arrangements

    公开(公告)号:US20250028157A1

    公开(公告)日:2025-01-23

    申请号:US18480695

    申请日:2023-10-04

    Applicant: Apple Inc.

    Abstract: An electronic device may include a display system and an optical system that are supported by a housing. The optical system may be a catadioptric optical system having one or more lens elements. The optical system may include a wave plate stack with one or more wave plates. The display system may also include a wave plate stack with one or more wave plates. Each wave plate stack may include a positive dispersion quarter wave plate and a positive dispersion half wave plate. Each wave plate stack may include a negative dispersion quarter wave plate and a negative dispersion half wave plate. Each wave plate stack may include a biaxial quarter wave plate and a biaxial half wave plate.

    Polarizer-free displays
    4.
    发明授权

    公开(公告)号:US12295204B2

    公开(公告)日:2025-05-06

    申请号:US17824787

    申请日:2022-05-25

    Applicant: Apple Inc.

    Abstract: The circular polarizer may be omitted from a display to increase efficiency. A polarizer-free display may use other non-polarizer techniques to mitigate reflections of ambient light and mitigate diffraction reflection artifacts. The polarizer-free display may include a black pixel definition layer that absorbs ambient light. Color filter elements may be included in a black matrix to mitigate ambient light reflections. An intra-anode phase shift layer and/or an inter-anode phase shift layer may be included in the display to mitigate diffractive reflection artifacts. Multiple sub-pixels of the same color may be used in a single pixel to ensure a neutral reflection color. The display may include a cathode layer that is patterned to have openings over the black pixel definition layer to mitigate reflections. The display may include diffusive particles (in the color filter element or in a separate diffuser layer) to mitigate diffractive reflection artifacts.

    Catadioptric Lens Module
    5.
    发明公开

    公开(公告)号:US20240077740A1

    公开(公告)日:2024-03-07

    申请号:US18329281

    申请日:2023-06-05

    Applicant: Apple Inc.

    Abstract: An electronic device may include a display system and an optical system that are supported by a housing. The optical system may be a catadioptric optical system having first, second, and third lens elements. The first lens element may have a convex surface and a concave surface. The convex surface may have less curvature than the concave surface. An anti-reflective coating may be formed on the convex surface. A partially reflective mirror may be interposed between the first and second lens elements and a reflective polarizer may be interposed between the second and third lens elements. Alternatively, a partially reflective mirror may be interposed between the second and third lens elements and a reflective polarizer may be interposed between the first and second lens elements.

    Polarizer-Free Displays
    6.
    发明申请

    公开(公告)号:US20230057334A1

    公开(公告)日:2023-02-23

    申请号:US17824787

    申请日:2022-05-25

    Applicant: Apple Inc.

    Abstract: The circular polarizer may be omitted from a display to increase efficiency. A polarizer-free display may use other non-polarizer techniques to mitigate reflections of ambient light and mitigate diffraction reflection artifacts. The polarizer-free display may include a black pixel definition layer that absorbs ambient light. Color filter elements may be included in a black matrix to mitigate ambient light reflections. An intra-anode phase shift layer and/or an inter-anode phase shift layer may be included in the display to mitigate diffractive reflection artifacts. Multiple sub-pixels of the same color may be used in a single pixel to ensure a neutral reflection color. The display may include a cathode layer that is patterned to have openings over the black pixel definition layer to mitigate reflections. The display may include diffusive particles (in the color filter element or in a separate diffuser layer) to mitigate diffractive reflection artifacts.

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