公开(公告)号：US10571711B2

公开(公告)日：2020-02-25

申请号：US14395588

申请日：2013-04-12

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： Gary T. Boyd ,  Qingbing Wang ,  Tri Dinh Pham ,  Connie L. Johnson

IPC: G02B27/48 ,  G02B5/02

Abstract: A microreplicated optical film (919) for use in optical displays, backlights, and the like includes a prismatic layer (950) carried by a substrate (920). In use, the optical film may be combined in a system with other components such that the optical film is positioned between an extended light source (902) and a polarizer (904). In such cases, if the substrate has an appreciable birefringence, a subtle but characteristic colored pattern known as substrate color mura (SCM) may be detected by a user of the system. To reduce or eliminate the SCM with little or no adverse effect on brightness enhancement capabilities of the optical film, the optical film may include an embedded structured surface (933) between the substrate and the prismatic layer. In order to avoid another optical artifact known as sparkle, at least 80% of the embedded structured surface is preferably occupied by features such as defocusing lenslets or random planar facets.

公开(公告)号：US20210294003A1

公开(公告)日：2021-09-23

申请号：US17266858

申请日：2019-08-08

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： Mark A. Roehrig ,  Zhaohui Yang ,  Tri Dinh Pham ,  Cynthia Y. Tamaki ,  Owen M. Anderson ,  Robert Bennett

IPC: G02B5/00

Abstract: A light control film includes a first portion and a second portion laminated to the first portion. The first portion includes a first functional substrate and a plurality of first louvers formed on the first functional substrate. The first functional substrate includes at least one of an optically active layer and a barrier layer. The second portion includes a second functional substrate disposed distal to the first functional substrate and a plurality of second louvers formed on the second functional substrate. The second functional substrate includes at least one of an optically active layer and a barrier layer. The plurality of first louvers extend along a first direction and the plurality of second louvers extend along a second direction. The first direction and the second direction are inclined to each other at an angle that lies within a range from about 70 degrees to about 110 degrees.

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。

公开(公告)号：US09116285B2

公开(公告)日：2015-08-25

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: G02B5/04 ,  F21V11/00 ,  F21V8/00

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。