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    Shaped optical films and methods of shaping optical films
    2.
    发明授权
    Shaped optical films and methods of shaping optical films 有权

    公开(公告)号：US11358355B2

    公开(公告)日：2022-06-14

    申请号：US16754825

    申请日：2018-10-23

    Applicant: 3M INNOVATIVE PROPERTIES COMPANY

    Inventor： Robert M. Jennings ,  William T. Fay ,  Jo A. Etter ,  Arthur L. Kotz ,  David J. W. Aastuen

    IPC: B29D11/00 ,  B29C51/42

    Abstract: Optical films having a curved shaped and methods of shaping optical films are described. A method of shaping an optical film includes the steps of disposing the optical film adjacent first and second rollers spaced apart along a first direction, securing opposing first and second ends of the optical film, providing a curved mold surface, and shaping the optical film by contacting the optical film with the curved mold surface while stretching the optical film along the first direction and keeping a threshold distance between closest points on the optical film contacting the first roller and contacting the curved mold surface less than the width of the optical film to reduce buckling of the optical film.

    Method of fabricating an optical assembly
    5.
    发明授权
    Method of fabricating an optical assembly 有权

    公开(公告)号：US11630291B2

    公开(公告)日：2023-04-18

    申请号：US17583598

    申请日：2022-01-25

    Applicant: 3M INNOVATIVE PROPERTIES COMPANY

    Inventor： Jo A. Etter ,  Timothy L. Wong ,  Zhisheng Yun ,  Gregg A. Ambur ,  Benjamin G. Sonnek ,  Robert M. Jennings

    IPC: G02B17/08 ,  G02B5/30 ,  G02B27/28

    Abstract: A method of fabricating an optical assembly includes providing a first mold having a first curved mold surface; placing a substantially flat reflective polarizer; on the first curved mold surface and applying at least one of pressure and heat to at least partially conform the reflective polarizer to the first curved mold surface; providing a second mold comprising a second mold surface, the first and second mold surfaces defining a mold cavity therebetween; substantially filling the mold cavity with a flowable material having a temperature greater than a glass transition temperature of the reflective polarizer; and solidifying the flowable material to form a solid optical element bonded to the reflective polarizer. A maximum variation of an orientation of a pass polarization state across the bonded reflective polarizer is within about 3 degrees of a maximum variation of the orientation of the pass polarization state across the substantially flat reflective polarizer.

    DISPLAY SYSTEM
    7.
    发明申请
    DISPLAY SYSTEM 有权

    公开(公告)号：US20210278677A1

    公开(公告)日：2021-09-09

    申请号：US17329678

    申请日：2021-05-25

    Applicant: 3M INNOVATIVE PROPERTIES COMPANY

    Inventor： Andrew J. Ouderkirk ,  Zhisheng Yun ,  Timothy L. Wong ,  Erin A. McDowell ,  Jo A. Etter ,  Robert M. Jennings

    IPC: G02B27/01 ,  G02B13/00 ,  B29D11/00 ,  G02B17/08 ,  G02B5/30 ,  G02B27/14 ,  G02B27/28 ,  G02B27/00 ,  G02B27/09 ,  G03B21/28

    Abstract: A display system includes an optical system and a curved display disposed to emit light toward the optical system. The optical system includes at least a first optical lens, a partial reflector and a reflective polarizer. The optical system has an optical axis such that a light ray propagating along the optical axis passes through the first optical lens the partial reflector and the reflective polarizer without being substantially refracted. At least one major surface of the optical system can be rotationally asymmetric about the optical axis. A major surface of the optical system may have a first portion defined by a first equation and a second portion adjacent the first portion defined by a different equation. The first optical lens may have a contoured edge adapted to be placed adjacent an eye of a viewer and substantially conform to the viewer's face.

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