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    Dynamic focusing head mounted display
    2.
    发明授权
    Dynamic focusing head mounted display 有权

    公开(公告)号：US12222511B2

    公开(公告)日：2025-02-11

    申请号：US18313450

    申请日：2023-05-08

    Applicant: e-Vision Smart Optics, Inc.

    Inventor： Anthony Van Heugten

    IPC: G02B27/01 ,  G02B3/14 ,  G02B5/10 ,  G02B7/04 ,  G02B26/00 ,  G02B27/16 ,  G02B27/40

    Abstract: A conventional head-mounted display (HMDs) can display a virtual image at a fixed focus (e.g., infinite focus). If the user looks at an object that appears closer than the virtual image, then accommodation by the user's eyes will cause the virtual image to appear blurry. The HMDs disclosed herein include a dynamic electro-active focusing element that changes the focus of the virtual image to account for accommodation by the user. This dynamic electro-active focusing element may include a curved layer of electro-active material, such as nematic or bi-stable (e.g., cholesteric) liquid crystal, disposed between a static concave mirror and a convex surface on a beam splitter or other optical element. Changing the refractive index of the electro-active material causes the focus of the dynamic electro-active focusing element, making it possible to shift the virtual image's focus in as the user's eyes change focus.

    Switchable micro-lens array for augmented reality and mixed reality
    4.
    发明授权
    Switchable micro-lens array for augmented reality and mixed reality 有权

    公开(公告)号：US11852914B2

    公开(公告)日：2023-12-26

    申请号：US17404253

    申请日：2021-08-17

    Applicant: e-Vision Smart Optics, Inc.

    Inventor： Ronald Blum

    IPC: G02F1/1335 ,  G06T19/00

    CPC classification number: G02F1/133526 ,  G06T19/006

    Abstract: A see-through near eye display, which can be modulated in such a manner to synchronize with electronic enabled micro-lenses of a switchable micro-lens array, wherein when pixels of the near eye display are lit the micro-lenses of the micro-lens array are present; thus, a virtual image can be formed and seen by the eye of a user. When the see-through near eye display is not lit, the micro-lenses are not present, thus permitting a real image to be present.

    Electro-active lenses with raised resistive bridges
    6.
    发明授权
    Electro-active lenses with raised resistive bridges 有权

    公开(公告)号：US11662642B2

    公开(公告)日：2023-05-30

    申请号：US17842472

    申请日：2022-06-16

    Applicant: e-Vision Smart Optics, Inc.

    Inventor： Anthony Van Heugten ,  Harry Milton

    IPC: G02F1/29 ,  A61F2/16 ,  G02F1/133

    CPC classification number: G02F1/29 ,  A61F2/16 ,  G02F1/13306 ,  G02F1/294 ,  G02F2201/122

    Abstract: Resistive bridges can connect many ring electrodes in an electro-active lens with a relatively small number of buss lines. These resistors are usually large to prevent excessive current consumption. Conventionally, they are disposed in the same plane as the ring electrodes, which means that the ring electrodes are spaced farther apart or made discontinuous to accommodate the resistors. But spacing the ring electrodes farther apart or making them discontinuous degrades the lens's optical quality. Placing the ring electrodes and resistors on layers separated by an insulator makes it possible for the ring electrodes to be closer together and continuous with resistance high enough to limit current consumption. It also relaxes constraints on feature sizes and placement during the process used to make the lens. And because the resistors and electrodes are on different planes, they can be formed of materials with different resistivities.

    FAST ELECTROACTIVE LENS SWITCHING SYSTEMS AND METHODS
    8.
    发明申请
    FAST ELECTROACTIVE LENS SWITCHING SYSTEMS AND METHODS 有权

    公开(公告)号：US20220342274A1

    公开(公告)日：2022-10-27

    申请号：US17854524

    申请日：2022-06-30

    Applicant: e-Vision Smart Optics, Inc.

    Inventor： Anthony Van Heugten ,  Yingfei JIANG

    IPC: G02F1/29

    Abstract: A conventional liquid crystal lens switches on and off so slowly that a person can perceive the lens's gradual transition from high to low optical power. This makes a conventional liquid crystal lens unsuitable for focusing virtual images quickly in an augmented, mixed, or virtual reality system. Conversely, an inventive fast-switching electroactive lens system can switch so fast (e.g., in 35 milliseconds or less) that a person perceives its optical power to change instantaneously. The system accomplishes this fast switching with using an electroactive wave plate in series with slower liquid-crystal lenses. The wave place can be switched quickly between emitting vertically or horizontally polarized light. Each lens focuses either vertically or horizontally polarized light and transmits orthogonally polarized light. By switching between polarization states, the wave plate effectively turns one lens on and the other lens off much faster than either lens could be switched by itself.

    Electro-Active Sporting Glasses
    10.
    发明申请
    Electro-Active Sporting Glasses 有权

    公开(公告)号：US20220291526A1

    公开(公告)日：2022-09-15

    申请号：US17616603

    申请日：2021-08-19

    Applicant: e-Vision Smart Optics, Inc.

    Inventor： Anthony Van Heugten

    IPC: G02C7/08 ,  G02F1/139 ,  F41G1/14

    Abstract: An electro-active lens provides simultaneous focusing at two different optical powers. It does this with a stack of electro-active lens elements aligned along the same optical axis that each focus light in different polarization states (e.g., horizontal and vertical polarization states). If a first and second electro-active lens elements have different optical powers, light in a first polarization state can be focused to one optical power and light in a second polarization state can be focused to a different optical power simultaneously. The electro-active lens can be switched between different single and multiple optical powers. People with presbyopia may use the electro-active lens mounted in eyewear in place of conventional bifocal glasses. The electro-active lens may also be used in a scope to improve target aiming.

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