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    Optical system
    3.
    发明授权
    Optical system 有权

    公开(公告)号：US11630290B2

    公开(公告)日：2023-04-18

    申请号：US16476634

    申请日：2018-03-02

    申请人： 3M INNOVATIVE PROPERTIES COMPANY

    发明人： Zhisheng Yun ,  Timothy L. Wong ,  Erin A. McDowell

    IPC分类号： G02B17/08 ,  G02B27/28

    摘要： An optical system for displaying an image to a viewer includes a partial reflector, a reflective polarizer, and a first retarder layer. A light ray propagates along the optical axis and passes through the plurality of optical lenses, the partial reflector, the reflective polarizer, and the first retarder layer without being substantially refracted. For a cone of light incident on the optical system from an object comprising a spatial frequency of about 70, 60, 50, 40, or 30 line pairs per millimeter and filling the exit pupil with a chief ray of the cone of light passing through a center of the opening of the exit pupil of the optical system and making an angle of about 20 degrees with the optical axis, a modulation transfer function of the optical system is greater than about 0.2.

    DISPLAY SYSTEM
    5.
    发明申请
    DISPLAY SYSTEM 有权

    公开(公告)号：US20210278679A1

    公开(公告)日：2021-09-09

    申请号：US17329331

    申请日：2021-05-25

    申请人： 3M INNOVATIVE PROPERTIES COMPANY

    发明人： Andrew J. Ouderkirk ,  Timothy L. Wong ,  Erin A. McDowell ,  Zhisheng Yun ,  Gilles J. Benoit ,  Jo Anne Etter

    IPC分类号： G02B27/09 ,  G02B3/00 ,  G02B27/01 ,  G02B27/28 ,  G02B27/30

    摘要： A display system includes a pixelated display being curved about at least one axis and including a plurality of groups of pixels; a plurality of light redirecting elements where each light redirecting element corresponds to a different group of pixels in the plurality of groups of pixels; and an optical lens system adapted to receive light emitted by the pixelated display and transmitted by the plurality of light redirecting elements. The optical lens system transmits at least a portion of the received light. For at least one pixel in the plurality of groups of pixels, the light redirecting element corresponding to the pixel reduces an angle between a central light ray emitted by the pixel and a chief light ray emitted by the pixel.

    LOW PROFILE IMAGE COMBINER FOR NEAR-EYE DISPLAYS
    9.
    发明申请
    LOW PROFILE IMAGE COMBINER FOR NEAR-EYE DISPLAYS 审中-公开

    公开(公告)号：US20190271848A1

    公开(公告)日：2019-09-05

    申请号：US16418287

    申请日：2019-05-21

    申请人： 3M INNOVATIVE PROPERTIES COMPANY

    发明人： Andrew J. Ouderkirk ,  Erin A. McDowell ,  Timothy L. Wong

    IPC分类号： G02B27/01 ,  F21V8/00 ,  G02B6/10 ,  G02B5/30 ,  G02B17/00 ,  G02B27/28

    摘要： An image combiner, also referred to as a combiner optic, of a near-eye display system or the like transmits enough light so a user can see remote objects in a “world view”, while also reflecting enough light so the user can simultaneously see a projected image in a “projected” (augmented) view. The disclosed image combiners use two partial reflectors configured to form a wedged reflective cavity. In the display system, light from an imaging device follows a path to the user's eye that includes three reflections in the wedged cavity. By using this capability of the wedged cavity, the combiner optic can have a substantially reduced thickness, and lower profile, than a combiner optic that uses only one partial reflector and only one reflection in the optical path.