OPTICAL LENS, GLASSES AND DISPLAY DEVICE
    33.
    发明申请

    公开(公告)号:US20200049981A1

    公开(公告)日:2020-02-13

    申请号:US16492630

    申请日:2018-12-07

    Abstract: The present disclosure provides an optical lens, glasses and a display device. The optical lens includes: a first surface, a second surface, a first lens portion and a second lens portion. The optical lens is a convex lens. The first surface and the second surface are at two side surfaces of the optical lens. The first surface is a convex aspheric surface, and the second surface is a Fresnel surface with a recessed curved base. The first lens portion and the second lens portion are adjacent each other and connected in a direction perpendicular to a main optical axis of the optical lens. A first focal point of the first lens portion and a second focal point of the second lens portion are on the main optical axis, and a focal length of the second lens portion is greater than a focal length of the first lens portion.

    OPTICAL SYSTEM AND VR DISPLAY DEVICE
    39.
    发明公开

    公开(公告)号:US20240219684A1

    公开(公告)日:2024-07-04

    申请号:US17920132

    申请日:2021-11-25

    CPC classification number: G02B9/10

    Abstract: An optical system has an optical axis, and includes a positive focal power lens, a negative focal power lens and a display. The positive focal power lens includes a first convex surface away from the display and a second convex surface proximate to the display. The negative focal power lens includes a third convex surface away from the display and a fourth concave surface proximate to the display. For a refractive index of the positive focal power lens and a refractive index of the negative focal power lens, one is greater than another, and a greater refractive index is a first refractive index, a smaller refractive index is a second refractive index, the first refractive index is greater than 1.7, the second refractive index is greater than 1.5, and a ratio of the first refractive index to the second refractive index is less than or equal to 2.

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