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    OPTICAL SYSTEM
    12.
    发明申请
    OPTICAL SYSTEM 审中-公开

    公开(公告)号：US20200081234A1

    公开(公告)日：2020-03-12

    申请号：US16495356

    申请日：2018-05-14

    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 ,  G02B27/28 ,  G02B5/30

    Abstract: Optical systems for displaying an image are described. The optical systems include spaced apart first and second optical lenses. A partial reflector is disposed on and conforms to a major surface of the first optical lens where the major surface can have a best-fit spherical radius of curvature in a range from 20 mm to 200 mm. A reflective polarizer is disposed on and conforms to a major surface of the second optical lens where the major surface can have a best-fit spherical radius of curvature in a range from 14 mm to 250 mm. A retarder layer is disposed between the reflective polarizer and the partial reflector. The first optical lens can have an optical birefringence of less than 15 nm/cm and the second optical lens can have an optical birefringence of greater than 15 nm/cm. A method of fabricating an optical assembly is described.

    Curved reflective polarizer
    13.
    发明授权
    Curved reflective polarizer 有权

    公开(公告)号：US12265243B2

    公开(公告)日：2025-04-01

    申请号：US18060033

    申请日：2022-11-30

    Applicant: 3M INNOVATIVE PROPERTIES COMPANY

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

    IPC: G02B5/30 ,  B32B7/035 ,  G02B6/27 ,  G02B6/293 ,  G02B17/08 ,  G02B27/01 ,  G02B27/14

    Abstract: A curved reflective has at least one location having a radius of curvature in a range from about 6 mm to about 1000 mm. Each location on the reflective polarizer has a maximum reflectance greater than about 70% for a block polarization state, a maximum transmittance greater than about 70% for an orthogonal pass polarization state, and a minimum transmittance for the block polarization state. For a continuous first portion of the reflective polarizer extending between different first and second edges of the reflective polarizer and defining disjoint second and third portions of the reflective polarizer, the minimum transmittance of the reflective polarizer for the block polarization state is higher at each location in at least 70% of the first portion than at each location in at least 70% of the second portion and at each location in at least 70% of the third portion.

    OPTICAL FILM AND OPTICAL SYSTEM
    18.
    发明公开
    OPTICAL FILM AND OPTICAL SYSTEM 审中-公开

    公开(公告)号：US20240168210A1

    公开(公告)日：2024-05-23

    申请号：US18282859

    申请日：2022-03-10

    Applicant: 3M INNOVATIVE PROPERTIES COMPANY

    Inventor： John D. Le ,  Timothy L. Wong ,  Benjamin G. Sonnek ,  Kayla A. McGrath ,  David J.W. Aastuen

    IPC: G02B5/30

    CPC classification number: G02B5/3041

    Abstract: An optical film includes a first optical stack disposed on a visible light absorbing second optical stack. Each of the first and second optical stacks includes a plurality of alternating polymeric first and second layers. The first layers have a higher index of refraction than the second layers at least along an in-plane same first direction. For substantially normally incident light and for at least 80% of wavelengths in a visible wavelength range, the plurality of alternating polymeric first and second layers for at least the first optical stack reflects more than about 60% of the incident light polarized along the first direction and transmits more than about 45% of the incident light polarized along an in-plane orthogonal second direction, and at least the first layers of the second optical stack are more light absorbing for the incident light polarized along the first direction than the second direction.

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