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    PATTERNED MARKING OF MULTILAYER OPTICAL FILM BY THERMAL CONDUCTION
    34.
    发明申请
    PATTERNED MARKING OF MULTILAYER OPTICAL FILM BY THERMAL CONDUCTION 审中-公开

    公开(公告)号：US20180313992A1

    公开(公告)日：2018-11-01

    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 ,  G02B5/28 ,  G02B5/08

    CPC classification number: G02B5/3083 ,  G02B5/0841 ,  G02B5/285 ,  G02B5/305

    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).

    Patterned marking of multilayer optical film by thermal conduction
    35.
    发明授权
    Patterned marking of multilayer optical film by thermal conduction 有权

    公开(公告)号：US10018762B2

    公开(公告)日：2018-07-10

    申请号：US15864888

    申请日：2018-01-08

    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

    CPC classification number: G02B5/3083 ,  G02B5/0841 ,  G02B5/285 ,  G02B5/305

    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).

    Internally patterned multilayer optical films using spatially selective birefringence reduction
    37.
    发明授权
    Internally patterned multilayer optical films using spatially selective birefringence reduction 有权
    使用空间选择性双折射降低的内部图案化多层光学膜

    公开(公告)号：US09575233B2

    公开(公告)日：2017-02-21

    申请号：US14315778

    申请日：2014-06-26

    Applicant: 3M INNOVATIVE PROPERTIES COMPANY

    Inventor： William W. Merrill ,  Douglas S. Dunn ,  Travis L. Potts

    IPC: G02B5/30 ,  G02B5/08 ,  G02B27/28 ,  G02B5/28 ,  B42D25/23 ,  B42D25/24 ,  B42D25/391 ,  G02F1/1335 ,  G02F1/13363

    CPC classification number: G02B5/3041 ,  B42D25/23 ,  B42D25/24 ,  B42D25/391 ,  G02B5/0816 ,  G02B5/0841 ,  G02B5/285 ,  G02B5/287 ,  G02B5/30 ,  G02B5/305 ,  G02B5/3083 ,  G02B27/28 ,  G02F1/133536 ,  G02F1/13363 ,  G02F2001/133521 ,  Y10T428/24942

    Abstract: A reflective film includes interior layers arranged to selectively reflect light by constructive or destructive interference, the layers extending from a first zone to a second zone of the film. The film has a first thickness and the interior layers provide a first reflective characteristic in the first zone; the film has a second thickness and the interior layers provide a second reflective characteristic in the second zone. The difference between the first and second reflective characteristics is not substantially attributable to any difference between the first and second thicknesses, which difference may be zero. Rather, the difference in the reflective characteristics is substantially attributable to reduced birefringence of at least some of the interior layers in one zone relative to the other zone. The film may also incorporate absorbing agents to assist in the manufacture or processing of the film. Related methods and articles are also disclosed.

    Abstract translation: 反射膜包括布置成通过结构性或相消干涉选择性地反射光的内层，所述层从膜的第一区延伸到第二区。 该膜具有第一厚度，并且内部层在第一区域中提供第一反射特性; 该膜具有第二厚度，并且内部层在第二区域中提供第二反射特性。 第一和第二反射特性之间的差异基本上不能归因于第一和第二厚度之间的任何差异，该差值可以为零。 相反，反射特性的差异基本上归因于在一个区域中的至少一些内层相对于另一区域的双折射率的降低。 该薄膜还可以包含吸收剂以协助制造或加工薄膜。 还公开了相关的方法和文章。

    PATTERNED MARKING OF MULTILAYER OPTICAL FILM BY THERMAL CONDUCTION
    39.
    发明申请
    PATTERNED MARKING OF MULTILAYER OPTICAL FILM BY THERMAL CONDUCTION 有权
    通过热导体对多层光学膜进行图案化标注

    公开(公告)号：US20160223731A1

    公开(公告)日：2016-08-04

    申请号：US14916819

    申请日：2014-09-03

    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

    CPC classification number: G02B5/3083 ,  G02B5/0841 ,  G02B5/285 ,  G02B5/305

    Abstract: A multilayer optical film (130) 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 elements (122) can physically contact the film to deliver heat to the packet through the stabilizing layer by thermal conduction, at altered regions of the film, such that the first reflective characteristic changes to an altered reflective characteristic in the altered regions 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 regions, while providing sufficient mechanical support to avoid substantial layer distortion of the microlayers near the outer exposed surface in the altered regions.

    Abstract translation: 多层光学膜（130）具有通过结构性或相消干涉选择性地反射光以提供第一反射特性的微层的分组。 至少一些微层是双折射的。 稳定层附近并覆盖薄膜的外部暴露表面附近的微层分组物，加热元件（122）可以物理接触薄膜，以通过热传导在薄膜的改变区域将散热的热量传递给分组， 第一反射特性改变为改变的区域中改变的反射特性以对膜进行图案化。稳定层提供足够的热传导以允许来自加热元件的热​​量改变（例如，减少）设置在外部暴露的附近的双折射微层的双折射 同时提供足够的机械支撑以避免在改变的区域中的外暴露表面附近的微层的实质层变形。

    MULTILAYER OPTICAL FILMS SUITABLE FOR BI-LEVEL INTERNAL PATTERNING
    40.
    发明申请
    MULTILAYER OPTICAL FILMS SUITABLE FOR BI-LEVEL INTERNAL PATTERNING 审中-公开
    适用于双层内部图案的多层光学膜

    公开(公告)号：US20150192719A1

    公开(公告)日：2015-07-09

    申请号：US14661803

    申请日：2015-03-18

    Applicant: 3M INNOVATIVE PROPERTIES COMPANY

    Inventor： William W. Merrill ,  Douglas S. Dunn ,  Przemyslaw Pawel Markowicz

    IPC: G02B5/28

    CPC classification number: G02B5/3041 ,  B42D25/23 ,  B42D25/24 ,  B42D25/391 ,  G02B5/0816 ,  G02B5/0841 ,  G02B5/285 ,  G02B5/287 ,  G02B5/30 ,  G02B5/305 ,  G02B5/3083 ,  G02B27/28 ,  G02F1/133536 ,  G02F1/13363 ,  G02F2001/133521 ,  Y10T428/24942

    Abstract: A reflective film includes a first optical stack that provides a first reflective characteristic and a second optical stack that provides a second reflective characteristic. The optical stacks also have first and second absorptive characteristics that are suitable to absorptively heat the respective stacks upon exposure to light including a write wavelength while maintaining the structural integrity of the stacks. The absorptive heating can change the first and second reflective characteristics to third and fourth reflective characteristics, respectively. A blocking layer that at least partially blocks light of the write wavelength may also be provided between the optical stacks to permit absorptive heating of any selected one of the optical stacks. The reflective characteristics of the optical stacks can thus be independently modified in any desired patterns by appropriate delivery of light beams that include the write wavelength.

    Abstract translation: 反射膜包括提供第一反射特性的第一光学堆叠和提供第二反射特性的第二光学堆叠。 光学堆叠还具有第一和第二吸收特性，其适于在暴露于包括写入波长的光的同时吸收加热各个堆叠，同时保持堆叠的结构完整性。 吸收加热可以将第一和第二反射特性分别改变为第三和第四反射特性。 还可以在光学堆叠之间提供至少部分地阻挡写入波长的光的阻挡层，以允许任何所选择的光学叠层的吸收加热。 因此，可以通过包括写入波长的光束的适当传递，以任何期望的图案独立地修改光学堆叠的反射特性。

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