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    OPTICAL FILM AND GLASS LAMINATE
    1.
    发明申请
    OPTICAL FILM AND GLASS LAMINATE 有权

    公开(公告)号：US20240427070A1

    公开(公告)日：2024-12-26

    申请号：US18828201

    申请日：2024-09-09

    Applicant: 3M INNOVATIVE PROPERTIES COMPANY

    Inventor： Adam D. Haag ,  Brianna N. Wheeler ,  Matthew B. Johnson ,  William F. Edmonds

    IPC: G02B5/30

    Abstract: An optical film includes a plurality of alternating first and second layers. The first layers have a first in-plane birefringence, the second layers have a second in-plane birefringence, and the second in-plane birefringence is less than the first in-plane birefringence and greater than 0.03. The first layers may include polyethylene terephthalate homopolymer and the second layers may include glycol-modified co (polyethylene terephthalate). The optical film has a shrinkage along a first direction of greater than 4% and a shrinkage along an orthogonal second direction of greater than 3% when heated at 150° C. for 15 minutes. A glass laminate is prepared by disposing the optical film between glass layers and laminating the optical film to the glass layers.

    Patterned marking of multilayer optical film by thermal conduction
    3.
    发明授权
    Patterned marking of multilayer optical film by thermal conduction 有权

    公开(公告)号：US10254460B2

    公开(公告)日：2019-04-09

    申请号：US16030109

    申请日：2018-07-09

    Applicant: 3M INNOVATIVE PROPERTIES COMPANY

    Inventor： Michael Benton Free ,  Martin B. Wolk ,  Rolf W. Biernath ,  Stephen A. Johnson ,  William W. Merrill ,  William F. Edmonds ,  Claire A. Jalbert

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

    Abstract: A multilayer optical film has a packet of microlayers that selectively reflect light by constructive or destructive interference to provide a first reflective characteristic. At least some of the microlayers are birefringent. A stabilizing layer attaches to and covers the microlayer packet proximate an outer exposed surface of the film. Heating element(s) can physically contact the film to deliver heat to the packet through the stabilizing layer by thermal conduction, at altered region(s) of the film, such that the first reflective characteristic changes to an altered reflective characteristic in the altered region(s) to pattern the film. The stabilizing layer provides sufficient heat conduction to allow heat from the heating elements to change (e.g. reduce) the birefringence of the birefringent microlayers disposed near the outer exposed surface in the altered region(s), while providing sufficient mechanical support to avoid substantial layer distortion of the microlayers near the outer exposed surface in the altered region(s).

    LIGHT DIRECTING FILM
    5.
    发明申请
    LIGHT DIRECTING FILM 审中-公开
    光导电影

    公开(公告)号：US20150153021A1

    公开(公告)日：2015-06-04

    申请号：US14611442

    申请日：2015-02-02

    Applicant: 3M INNOVATIVE PROPERTIES COMPANY

    Inventor： William F. Edmonds ,  Vivian W. Jones ,  Keith M. Kotchick ,  Tri Dinh Pham ,  John F. Van Derlofske, III

    IPC: F21V11/00

    CPC classification number: G02B5/045 ,  F21V11/00 ,  G02B6/0053 ,  G02F1/133606 ,  G02F2001/133607 ,  Y10T428/24612

    Abstract: Light directing film is disclosed. The light directing film includes a first structured major surface and an opposing second major surface. The first structured major surface includes a plurality of unitary discrete structures. Each unitary discrete structure includes a light directing portion that is primarily for directing light and includes a plurality of first side facets. Each first side facet makes an angle with the plane of the light directing film in a range from about 35 degrees to about 55 degrees. Each light directing portion also includes a first base that is defined by the plurality of first side facets and has a first minimum dimension. Each light directing portion also has a first maximum height. Each unitary discrete structure also includes a bonding portion that is primarily for bonding the light directing film to a surface. The bonding portion is disposed on and between the plurality of first side facets and includes a plurality of second side facets. Each second side facet makes an angle with the plane of the light directing film greater than about 70 degrees. The bonding portion also includes a second base that is defined by the plurality of second side facets and has a second minimum dimension less than about 10% of the first minimum dimension. The bonding portion also has a second maximum height. The ratio of the second maximum height to the second minimum dimension is at least about 1.5.

    Abstract translation: 公开了导光膜。 导光膜包括第一结构化主表面和相对的第二主表面。 第一结构化主表面包括多个单一离散结构。 每个单一离散结构包括主要用于引导光并包括多个第一侧面的导光部分。 每个第一侧面与导光膜的平面成角度在约35度至约55度的范围内。 每个光引导部分还包括由多个第一侧面定义并且具有第一最小尺寸的第一基座。 每个导光部分也具有第一最大高度。 每个单一离散结构还包括主要用于将光导膜粘合到表面上的接合部分。 接合部分设置在多个第一侧面之间并且在多个第一侧面之间并且包括多个第二侧面。 每个第二侧面与导光膜的平面形成大于约70度的角度。 接合部分还包括由多个第二侧面定义并具有小于第一最小尺寸的约10％的第二最小尺寸的第二基部。 接合部分也具有第二最大高度。 第二最大高度与第二最小尺寸的比率至少为约1.5。

    OPTICAL STACK COMPRISING ADHESIVE
    8.
    发明申请
    OPTICAL STACK COMPRISING ADHESIVE 审中-公开

    公开(公告)号：US20180011228A1

    公开(公告)日：2018-01-11

    申请号：US15699080

    申请日：2017-09-08

    Applicant: 3M INNOVATIVE PROPERTIES COMPANY

    Inventor： William F. Edmonds ,  Brandt K. Carter ,  Jason S. Petaja

    IPC: G02B5/04 ,  C09J133/08 ,  C09J7/02 ,  C09J151/06

    CPC classification number: G02B5/045 ,  C08L2205/04 ,  C09J7/38 ,  C09J133/08 ,  C09J151/06

    Abstract: Presently described are optical stacks comprising a first optical film comprising a plurality of structures comprising an optically active portion designed primarily to provide optical gain and optionally an optically in-active bonding portion disposed on a first surface bonded to a second optical film with a light-transmissive adhesive layer such that a portion of the structures penetrate the adhesive layer and a separation is provided between the adhesive layer and the first surface. In one embodiment, the optical stacks exhibit a combination of high peel strength and high retained brightness, particularly after aging. The adhesive layer preferably comprises an interpenetrating network of the reaction product of a polyacrylate component and a polymerizable monomer and the adhesive layer has an elastic modulus ranging from 100 to 2000 MPa at 25° C.

    Optical film and glass laminate
    10.
    发明授权
    Optical film and glass laminate 有权

    公开(公告)号：US12117636B2

    公开(公告)日：2024-10-15

    申请号：US17439011

    申请日：2020-04-01

    Applicant: 3M INNOVATIVE PROPERTIES COMPANY

    Inventor： Adam D. Haag ,  Brianna N. Wheeler ,  Matthew B. Johnson ,  William F. Edmonds

    IPC: G02B5/30

    CPC classification number: G02B5/305 ,  G02B5/3066 ,  G02B5/3083

    Abstract: An optical film includes a plurality of alternating first and second layers. The first layers have a first in-plane birefringence, the second layers have a second in-plane birefringence, and the second in-plane birefringence is less than the first in-plane birefringence and greater than 0.03. The first layers may include polyethylene terephthalate homopolymer and the second layers may include glycol-modified co(polyethylene terephthalate). The optical film has a shrinkage along a first direction of greater than 4% and a shrinkage along an orthogonal second direction of greater than 3% when heated at 150° C. for 15 minutes. A glass laminate is prepared by disposing the optical film between glass layers and laminating the optical film to the glass layers.

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