公开(公告)号：US10222522B2

公开(公告)日：2019-03-05

申请号：US15513059

申请日：2014-10-01

Applicant: LINTEC Corporation

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

IPC: G02B5/02

Abstract: Provided are an optical diffusion film composed of a single layer, for which the optical diffusion incident angle region can be effectively expanded, and even when the incident angle of incident light is varied within the optical diffusion incident angle region, changes in the optical diffusion characteristics can be effectively suppressed; and a method for manufacturing the optical diffusion film.Disclosed is an optical diffusion film having, inside the film, a single optical diffusion layer having a first internal structure and a second internal structure, each of which include a plurality of regions having a relatively high refractive index in a region having a relatively low refractive index, sequentially from the lower part along the film thickness direction, and the regions having a relatively high refractive index in the first internal structure have a bent section at an intermediate point along the film thickness direction.

公开(公告)号：US09945990B2

公开(公告)日：2018-04-17

申请号：US14775522

申请日：2014-02-25

Applicant: LINTEC Corporation

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

IPC: G02B1/04 ,  C09D133/14 ,  G02B5/02 ,  C08F299/06 ,  C08F220/30 ,  C08G18/48 ,  C08G18/67 ,  C08G18/75 ,  C08F283/00 ,  C08F290/14 ,  B05D3/06 ,  G02F1/1335

CPC classification number: G02B5/0278 ,  B05D3/067 ,  C08F220/30 ,  C08F283/006 ,  C08F290/147 ,  C08F299/06 ,  C08G18/4825 ,  C08G18/672 ,  C08G18/755 ,  C09D133/14 ,  G02B1/04 ,  G02B5/0236 ,  G02B5/0257 ,  G02B2207/123 ,  G02F1/133504 ,  G02F1/133553 ,  C08F2220/301 ,  C08L33/08

Abstract: A light diffusion film in which the angle of aperture of diffused light has been expanded effectively by forming, within the film, a predetermined columnar structure composed of pillar-shaped objects having a bent part and a region having a relatively low refractive index, and a method for manufacturing the light diffusion film are provided. Disclosed is a light 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 the film thickness direction in a region having a relatively low refractive index, and the plural pillar-shaped objects having a relatively high refractive index have a bent part in the middle of the pillar-shaped objects.

公开(公告)号：US20140340752A1

公开(公告)日：2014-11-20

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

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

Abstract: Provided are a method for producing a light diffusion film, capable of easily regulating the combination of the inclination angles of plural plate-shaped regions in plural louver structure regions, and also capable of efficiently producing a light diffusion film having increased uniformity of the intensity of diffused light in the light diffusion angle region, and an effectively expanded light diffusion angle region; and a light diffusion film thus obtained. Disclosed is a method for producing a light diffusion film having first and second louver structure regions, the method including 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: 本发明提供一种光扩散膜的制造方法，其能够容易地调节多个百叶窗结构区域中的多个板状区域的倾斜角度的组合，并且还能够有效地制造具有均匀度增加的光扩散膜 扩散光在光扩散角区域中，并且有效地扩展光扩散角区域; 和由此获得的光漫射膜。 公开了一种具有第一和第二百叶窗结构区域的光漫射膜的制造方法，该方法包括以下步骤（a）至（d）：（a）制备光扩散膜组合物; （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。

公开(公告)号：US12117625B2

公开(公告)日：2024-10-15

申请号：US17523145

申请日：2021-11-10

Applicant: LINTEC CORPORATION

Inventor： Baku Katagiri ,  Tatsuki Kuramoto ,  Tetsuya Arazoe ,  Kentaro Kusama

IPC: G02B5/00 ,  G02B5/02

CPC classification number: G02B5/0236

Abstract: A reflective display body configured such that the up-down direction of display content on a display surface can be changed. The reflective display body includes a light diffusion control layer, a display device, and a reflective layer. The light diffusion control layer has a diffusion angle width of 5° or more and 80° or less in which a haze value (%) is 90% or more as measured when one surface of the light diffusion control layer is irradiated with light rays at an incident angle of −70° to 70° with respect to the normal direction of the one surface being 0°. The light diffusion control layer has an acute angle of 7° or more and 83° or less.

公开(公告)号：US11630248B2

公开(公告)日：2023-04-18

申请号：US17083886

申请日：2020-10-29

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 contains a hindered amine-based compound.

公开(公告)号：US10288779B2

公开(公告)日：2019-05-14

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 ,  C08F299/06 ,  G02F1/1335

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：US10185063B2

公开(公告)日：2019-01-22

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 ,  G02B1/04 ,  F21V8/00 ,  G02F1/1335

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.

公开(公告)号：US10094958B2

公开(公告)日：2018-10-09

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 ,  G02F1/1335

Abstract: 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

公开(公告)号：US11740502B2

公开(公告)日：2023-08-29

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

CPC classification number: G02F1/133504 ,  G02B5/0215 ,  G02F1/133553

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：US11567244B2

公开(公告)日：2023-01-31

申请号：US17119004

申请日：2020-12-11

Applicant: LINTEC CORPORATION

Inventor： Kentaro Kusama ,  Baku Katagiri ,  Tatsuki Kuramoto

IPC: G06F3/147 ,  G02B5/02

Abstract: A light diffusion control member includes a first light diffusion control layer and a second light diffusion control layer. The first light diffusion control layer and the second light diffusion control layer each has a regular internal structure that includes a plurality of regions having a relatively high refractive index in a region having a relatively low refractive index. The first light diffusion control layer and the second light diffusion control layer are laminated so that an angle between two respective vectors determined based on the regular internal structure in the first light diffusion control layer and the second light diffusion control layer is more than 0° and 90° or less.