公开(公告)号：US20210278573A1

公开(公告)日：2021-09-09

申请号：US17193047

申请日：2021-03-05

Applicant: LINTEC CORPORATION

Inventor： Tatsuki KURAMOTO ,  Kentaro KUSAMA ,  Baku KATAGIRI

IPC: G02B5/02

Abstract: A laminate used under an environment irradiated with external light includes a light diffusion control film having an internal structure in the film. The internal structure includes a plurality of regions having a relatively high refractive index in a region having a relatively low refractive index. The laminate further includes an ultraviolet absorbing layer located further on the external light incident side than the light diffusion control film. The light diffusion control film has an indentation elastic modulus of 30 MPa or more as measured at a maximum load of 2 mN by a nanoindentation method.

公开(公告)号：US20190259312A1

公开(公告)日：2019-08-22

申请号：US16244424

申请日：2019-01-10

Applicant: LINTEC Corporation

Inventor： Kentaro KUSAMA ,  Tatsuki KURAMOTO

IPC: G09F13/16 ,  G02B5/02 ,  G02B5/00 ,  G02B5/122 ,  G09F21/04

Abstract: Provided is an interior-light-utilizing display being capable of stably maintaining constant display characteristics even in a case where an incident angle of external light changes and having improved luminance of display light in a viewing angle.Disclosed is an interior-light-utilizing display being obtained by laminating a reflection structure and a light diffusion film, in which the light diffusion film has an internal structure including a plurality of regions having a relatively high refractive index in a region having a relatively low refractive index in the film.

公开(公告)号：US20160033692A1

公开(公告)日：2016-02-04

申请号：US14774678

申请日：2014-02-04

Applicant: LINTEC CORPORATION

Inventor： Kentaro KUSAMA ,  Baku KATAGIRI ,  Tomoo ORUI ,  Satoru SHOSHI

IPC: G02B5/02

CPC classification number: G02B5/0236 ,  C08F283/006 ,  C08F290/147 ,  C08J2367/02 ,  C08J2433/06 ,  C08J2475/16 ,  G02B5/0257 ,  G02B5/0268 ,  G02B5/0278 ,  G02B2207/123 ,  C08F220/30 ,  C08F2220/301

Abstract: A composition for light diffusion film in which the angle of aperture of diffused light in a light diffusion film obtainable therefrom can be expanded effectively, and a light diffusion film obtainable by the composition for light diffusion film are provided. Disclosed is composition for light diffusion film for obtaining a light diffusion film which has a predetermined internal structure within the film and in which plural regions having a relatively high refractive index are bent at an intermediate point along the film thickness direction, the composition for light diffusion film including a predetermined (meth)acrylic acid ester as component (A); a urethane(meth)acrylate as component (B); a photopolymerization initiator as component (C); and an ultraviolet absorber as component (D), wherein the content of the component (A) is adjusted to a value within a predetermined range relative to 100 parts by weight of the component (B), the content of the component (C) is adjusted to a value within a predetermined range relative to the total amount of the component (A) and the component (B), and the content of the component (D) is adjusted to a predetermined value relative to the total amount of the component (A) and the component (B).

Abstract translation: 可以有效地扩展其中由其获得的光漫射膜中的漫射光的孔径角度的光漫射膜组合物，并且提供通过该光扩散膜组合物获得的光扩散膜。 公开了一种用于获得在膜内具有预定内部结构的光漫射膜的组合物，其中具有相对较高折射率的多个区域沿着膜厚度方向在中间点弯曲，光扩散用组合物 包含预定的（甲基）丙烯酸酯作为组分（A）的膜; 作为组分（B）的氨基甲酸酯（甲基）丙烯酸酯; 作为组分（C）的光聚合引发剂; 和作为成分（D）的紫外线吸收剂，其中组分（A）的含量相对于组分（B）100重量份调节到预定范围内的值，组分（C）的含量为 调整为相对于组分（A）和组分（B）的总量的预定范围内的值，并且将组分（D）的含量相对于组分的总量调节至预定值（ A）和组分（B）。

公开(公告)号：US20150355390A1

公开(公告)日：2015-12-10

申请号：US14655696

申请日：2013-12-02

Applicant: LINTEC CORPORATION

Inventor： Baku KATAGIRI ,  Kentaro KUSAMA ,  Tomoo ORUI

IPC: G02B5/02 ,  G02B27/09

CPC classification number: G02B5/0242 ,  G02B5/02 ,  G02B5/0278 ,  G02B27/095 ,  G02B27/0988 ,  G02F1/133504

Abstract: There is provided a light diffusion film capable of diffusing incident light into an elliptical shape with respect to a plane parallel to the light diffusion film, and which has excellent applicability to rectangular displays.According to the present invention, there is provided a light diffusion film for diffusing incident light into an elliptical shape, which contains, inside the film, a structure composed of a plurality of flaky-shaped objects with comparatively high refractive index arranged in multiple rows in a region with comparatively low refractive index along any one arbitrary direction along the film plane. If T50 (μm) is the width of the flaky-shaped objects at a position of 50 μm below the upper end of the flaky-shaped objects in the direction of the thickness of the light diffusion film, and if L50 (μm) is the length of the flaky-shaped objects in the above-mentioned arbitrary one direction, the following relation (1) is satisfied: 0.05≦T50/L50

Abstract translation: 提供了能够将入射光相对于与光漫射膜平行的平面扩散成椭圆形状的光漫射膜，并且对矩形显示器具有优异的适用性。 根据本发明，提供了一种用于将入射光漫射成椭圆形状的光漫射膜，其在膜内包含由多个布置成多行的具有相对较高折射率的片状物体构成的结构 沿着膜平面沿着任意一个任意方向具有较低折射率的区域。 如果T50（μm）是片状物体在光扩散膜的厚度方向以下的薄片状物体的上端以下50μm的位置处的宽度，如果L50（μm）为 在上述任意一个方向上的片状物体的长度，满足以下关系式（1）：0.05＆nlE; T50 / L50 <0.9（1）

公开(公告)号：US20230266510A1

公开(公告)日：2023-08-24

申请号：US18111171

申请日：2023-02-17

Applicant: LINTEC CORPORATION

Inventor： Hiroki FUKUSHIMA ,  Tatsuki KURAMOTO ,  Baku KATAGIRI ,  Kentaro KUSAMA

IPC: G02B5/02 ,  G02B5/00

CPC classification number: G02B5/0236 ,  G02B5/003 ,  B32B7/12 ,  B32B2250/40

Abstract: A laminate used under an environment irradiated with external light includes a light diffusion control film having an internal structure in the film. The internal structure includes a plurality of regions having a relatively high refractive index in a region having a relatively low refractive index. The laminate further includes an ultraviolet absorbing layer located further on the external light incident side than the light diffusion control film. The light diffusion control film contains a weakly basic hindered amine-based compound having a carbonate skeleton.

公开(公告)号：US20220317507A1

公开(公告)日：2022-10-06

申请号：US17708133

申请日：2022-03-30

Applicant: LINTEC CORPORATION

Inventor： Baku KATAGIRI ,  Kentaro KUSAMA ,  Tatsuki KURAMOTO

IPC: G02F1/1335 ,  G02B5/02

Abstract: An external light use type display body including: a light diffusion control layer; a display layer; and a reflective layer. The light diffusion control layer has a regular internal structure that comprises a plurality of regions having a relatively high refractive index in a region having a relatively low refractive index. The reflective layer has a patterned indented structure when at least one cross section cut in a thickness direction is viewed. When the entrance plane is irradiated with light rays that travel on the light ray traveling plane with a predetermined incident angle while being scanned along an intersection line of the light ray traveling plane and the entrance plane, the ratio of the light rays satisfying the following Formula (1) or Formula (2) is 50% or more. θid

公开(公告)号：US20180284591A1

公开(公告)日：2018-10-04

申请号：US15894316

申请日：2018-02-12

Applicant: LINTEC Corporation

Inventor： Kentaro KUSAMA ,  Baku KATAGIRI

IPC: G03B21/62

CPC classification number: G03B21/62

Abstract: Provided is a projection screen which can effectively diffuse incident light coming from a wide angle, despite that the number of laminated sheets of a light diffusion control film is small such as 3 to 4 sheets, and can thereby provide a wide viewing angle even if the projection screen is applied to a large-sized screen. Disclosed is a projection screen having a light diffusion control plate, the light diffusion control plate being formed by laminating a plurality of sheets of a light diffusion control film, the light diffusion control film being a light diffusion control film having a single light diffusion layer having a first internal structure and a second internal structure sequentially from the lower part along the film thickness direction, in which the first internal structure is a predetermined louver structure, and the second internal structure is a predetermined columnar structure.

公开(公告)号：US20160077246A1

公开(公告)日：2016-03-17

申请号：US14786733

申请日：2014-03-13

Applicant: LINTEC CORPORATION ,  TOHOKU UNIVERSITY

Inventor： Kentaro KUSAMA ,  Baku KATAGIRI ,  Tomoo ORUI ,  Satoru SHOSHI ,  Hideo FUJIKAKE ,  Takahiro ISHINABE

IPC: G02B5/02 ,  F21V8/00 ,  G02B1/04

CPC classification number: G02B5/0236 ,  G02B1/04 ,  G02B5/0242 ,  G02B5/0257 ,  G02B5/0263 ,  G02B5/0268 ,  G02B5/0278 ,  G02B5/0294 ,  G02B6/0051 ,  G02F1/133504 ,  G02F2202/023

Abstract: Provided are an optical-diffusion film for display which, particularly when applied to a reflective display device, can efficiently diffuse and emit an external light incident from a wide range of angles toward the front of the display device as image display light, and a reflective display device using the optical-diffusion film.Disclosed is an optical-diffusion film for display, which is a single-layered optical-diffusion film obtained by photocuring a composition for optical-diffusion film including two or more kinds of polymerizable compounds having different refractive indices, and in which the film thickness of the optical-diffusion film has a value within the range of 60 to 700 μm, and when a coating layer formed by applying a composition for optical-diffusion film in a film form is photocured, and the incident angle of incident light with respect to the normal line of the film plane is varied in the range of −70° to 70° along the travel direction of the coating layer at the time of photocuring, the haze value at each incident angle has a value of 70% or more.

Abstract translation: 提供了一种用于显示器的光学扩散膜，特别是当应用于反射显示装置时，可以有效地将从宽范围的角度入射的外部光朝向显示装置的前方作为图像显示光，并且反射 显示装置使用光扩散膜。 公开了一种用于显示的光学扩散膜，其是通过光固化包含两种或更多种具有不同折射率的可聚合化合物的光扩散膜组合物获得的单层光学扩散膜，其中膜厚度 光扩散膜的值在60〜700μm的范围内，通过将通过将膜形成用的光漫射膜用组合物形成的被覆层进行光固化，并且入射光的相对于 在光固化时，膜面的法线在涂层的行进方向为-70°〜70°的范围内变化，每个入射角的雾度值为70％以上。

公开(公告)号：US20160018571A1

公开(公告)日：2016-01-21

申请号：US14773920

申请日：2014-02-04

Applicant: LINTEC CORPORATION

Inventor： Kentaro KUSAMA ,  Baku KATAGIRI ,  Tomoo ORUI

IPC: G02B5/02 ,  G02B1/04

CPC classification number: G02B5/0236 ,  C08F283/006 ,  C08F290/147 ,  C08J7/047 ,  C08J2367/02 ,  C08J2433/06 ,  C08J2475/16 ,  G02B1/04 ,  G02B5/0257 ,  G02B2207/123 ,  C08F220/30 ,  C08F2220/301 ,  C08L33/08 ,  C08L33/10 ,  C08L75/16

Abstract: Provided are a composition for light diffusion film which has satisfactory incident angle dependency in transmission and diffusion of light, does not easily undergo yellowing even if exposed to ultraviolet radiation for a long time, and has excellent weather resistance, and a light diffusion film formed by curing the composition. Disclosed is a composition for light diffusion film, which includes a (meth)acrylic acid ester containing plural aromatic rings as component (A), a urethane (meth)acrylate as component (B), a photopolymerization initiator as component (C), and a hindered amine-based photostabilizer as component (D), and in which the content of the component (A) has a value within a predetermined range relative to 100 parts by weight of the component (B), the content of the component (C) has a value within a predetermined range relative to the total amount (100 parts by weight) of the component (A) and the component (B), and the content of the component (D) has a value within a predetermined range relative to the total amount (100 parts by weight) of the component (A) and the component (B).

Abstract translation: 本发明提供一种光扩散膜的组合物，其在光的透射扩散中具有令人满意的入射角依赖性，即使长期暴露于紫外线下也不容易发黄，并且具有优异的耐候性，以及由 固化组合物。 公开了一种光扩散膜组合物，其包含作为组分（A）的包含多个芳环的（甲基）丙烯酸酯，作为组分（B）的聚氨酯（甲基）丙烯酸酯，作为组分（C）的光聚合引发剂）和 作为组分（D）的受阻胺类光稳定剂，其中组分（A）的含量相对于组分（B）100重量份具有在预定范围内的值，组分（C ）相对于组分（A）和组分（B）的总量（100重量份）具有在预定范围内的值，并且组分（D）的含量相对于 组分（A）和组分（B）的总量（100重量份）。

公开(公告)号：US20210173435A1

公开(公告)日：2021-06-10

申请号：US17111699

申请日：2020-12-04

Applicant: LINTEC CORPORATION

Inventor： Baku KATAGIRI ,  Kentaro KUSAMA ,  Tatsuki KURAMOTO

IPC: G06F1/16 ,  G02B5/02

Abstract: A reflective display body includes a light diffusion control layer and a reflective layer. The light diffusion control layer has a plurality of regions having a relatively high refractive index in a region having a relatively low refractive index. The regions having the relatively high refractive index extend from one surface side toward the other surface side of the light diffusion control layer, and a straight line parallel to the extending direction is tilted with respect to the thickness direction of the light diffusion control layer. When a vector C is obtained by projecting a vector, which is parallel to the extending direction and directed from the surface side distal to the display surface of the reflective display body toward the display surface side, onto the display surface, the smallest angle among three angles between vector C and vectors D1 to D3 is more than 0° and 45° or less.