公开(公告)号：US11467323B2

公开(公告)日：2022-10-11

申请号：US17193047

申请日：2021-03-05

Applicant: LINTEC CORPORATION

Inventor： Tatsuki Kuramoto ,  Kentaro Kusama ,  Baku Katagiri

IPC: G02B5/02 ,  G02B1/04 ,  G02B5/22 ,  G02B5/20

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：US10310367B2

公开(公告)日：2019-06-04

申请号：US15894316

申请日：2018-02-12

Applicant: LINTEC Corporation

Inventor： Kentaro Kusama ,  Baku Katagiri

IPC: G02B5/02 ,  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：US10228498B2

公开(公告)日：2019-03-12

申请号：US14786878

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 ,  G02F1/1335

Abstract: An optical-diffusion film for display which, particularly when applied to a display device using a collimated backlight as a backlight for the display panel, can efficiently diffuse and emit a highly directional light emitted from the collimated backlight toward the front of the display device as image display light, without allowing straight transmission of the highly directional light, and a display device using the optical-diffusion film for display are provided.Disclosed is a single layered optical-diffusion film having a columnar structure in which plural pillar-shaped objects having a relatively high refractive index are arranged to stand close together in a film thickness direction in a region having a relatively low refractive index, in which the film thickness of the optical-diffusion film has a value within the range of 60 to 700 μm, and the haze value obtainable in the case in which light is made incident in the normal line direction of the film plane has a value of 80% or more.

公开(公告)号：US09869803B2

公开(公告)日：2018-01-16

申请号：US14773920

申请日：2014-02-04

Applicant: LINTEC Corporation

Inventor： Kentaro Kusama ,  Baku Katagiri ,  Tomoo Orui

IPC: G02B5/02 ,  C08J7/04 ,  C08F283/00 ,  C08F290/14 ,  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).

公开(公告)号：US20170351010A1

公开(公告)日：2017-12-07

申请号：US15685311

申请日：2017-08-24

Applicant: LINTEC Corporation

Inventor： Kentaro Kusama ,  Baku Katagiri ,  Tomoo Orui ,  Satoru Shoshi

IPC: G02B5/02 ,  C08L33/14 ,  C08L55/00 ,  G02F1/1335 ,  C08F299/06

CPC classification number: G02B5/0247 ,  C08F299/065 ,  C08L33/14 ,  C08L55/005 ,  G02B5/0236 ,  G02B5/0257 ,  G02B5/0268 ,  G02B5/0278 ,  G02B2207/123 ,  G02F1/133504

Abstract: Provided are a light diffusion film having a single-layered light diffusion layer, in which the uniformity of the intensity of diffused light in the light diffusion angle region can be increased, or the light diffusion angle region can be expanded effectively, by regulating the combination of the angles of inclination of pillar-shaped objects in plural columnar structure regions, and a method for manufacturing a light diffusion film. Disclosed is a light diffusion film having a single-layered light diffusion layer, the light diffusion film having a first columnar structure region and a second columnar structure region, in which plural pillar-shaped objects having a relatively high refractive index are arranged to stand close together in a region having a relatively low refractive index, sequentially from the lower part of the film along the film plane.

公开(公告)号：US09523799B2

公开(公告)日：2016-12-20

申请号：US14372260

申请日：2012-12-20

Applicant: LINTEC Corporation

Inventor： Kentaro Kusama ,  Tomoo Orui ,  Kenta Tomioka ,  Satoru Shoshi

IPC: G02B5/02 ,  G02B26/02 ,  G02F1/1335

CPC classification number: G02B5/0268 ,  G02B5/021 ,  G02B5/0236 ,  G02B26/023 ,  G02F1/133504

Abstract: A method for producing a light diffusion film having first and second louver structure regions includes the following steps (a) to (d): (a) preparing a composition for light diffusion film; (b) applying the composition for light diffusion film, and forming a coating layer; (c) performing first active energy ray irradiation, and forming a first louver structure region in the lower part of the coating layer, while leaving a louver structure-unformed region in the upper part of the coating layer; and (d) performing second active energy ray irradiation, and forming a second louver structure region in the louver structure-unformed region.

Abstract translation: 一种具有第一和第二百叶窗结构区域的光扩散膜的制造方法，包括以下工序（a）〜（d）：（a）制备光扩散膜用组合物， （b）施加光扩散膜用组合物，形成被覆层; （c）进行第一活性能量射线照射，在涂层的下部形成第一百叶窗结构区域，同时在涂层的上部留下百叶窗结构未形成区域; 和（d）进行第二活性能量射线照射，并且在百叶窗结构未形成区域中形成第二百叶窗结构区域。