公开(公告)号：US20210055459A1

公开(公告)日：2021-02-25

申请号：US16997245

申请日：2020-08-19

Applicant: LINTEC CORPORATION

Inventor： Baku KATAGIRI ,  Kentaro KUSAMA ,  Tatsuki KURAMOTO

IPC: G02B5/02

Abstract: A light diffusion control body includes at least two light diffusion control layers each having a regular internal structure. The regular internal structure includes a plurality of regions having a relatively high refractive index in a region having a relatively low refractive index. The at least two light diffusion control layers includes a first light diffusion control layer and a second light diffusion control layer each having a minimum value of a haze value of 35% or more. The haze value is measured when one surface of each of the first light diffusion control layer and the second light diffusion control layer is irradiated sequentially with a light ray at an incident angle of −70° to 70° with respect to the normal direction of the surface being 0°.

公开(公告)号：US20190179060A1

公开(公告)日：2019-06-13

申请号：US16239800

申请日：2019-01-04

Applicant: LINTEC Corporation

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

IPC: G02B5/02

CPC classification number: G02B5/0257 ,  G02B5/0236 ,  G02B5/0247 ,  G02B5/0278

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：US20170293054A1

公开(公告)日：2017-10-12

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

CPC classification number: G02B5/0257 ,  G02B5/0236 ,  G02B5/0247 ,  G02B5/0278

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：US20160047952A1

公开(公告)日：2016-02-18

申请号：US14775522

申请日：2014-02-25

Applicant: LINTEC CORPORATION

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

IPC: G02B5/02 ,  B05D3/06 ,  C09D133/14 ,  G02B1/04

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.

Abstract translation: 通过在膜内形成由具有弯曲部分的柱状物体和具有相对低的折射率的区域构成的预定柱状结构，有效扩展漫射光的孔径的光漫射膜，以及 提供了制造光漫射膜的方法。 公开了一种具有柱状结构的光漫射膜，其中具有相对较高折射率的多个柱状物体被布置成在折射率相对较低的区域中沿膜厚度方向靠近在一起，并且多个柱状 具有较高折射率的物体在柱状物体的中间具有弯曲部分。

公开(公告)号：US20250036018A1

公开(公告)日：2025-01-30

申请号：US18705058

申请日：2022-10-31

Applicant: LINTEC CORPORATION

Inventor： Akihira WATANABE ,  Kentaro KUSAMA

IPC: G03B21/62

Abstract: Provided is a projection screen used by being attached to an optically transparent adherend. The projection screen includes a transparent base material and a pressure sensitive adhesive layer. The luminance at frontal 0° on the transparent base material side as measured using transmitted light from a white light source of 1100 cd/m2 is 10 cd/m2 or more and 400 cd/m2 or less. The luminance ratio of a luminance at diagonal 45° on the transparent base material side as measured using transmitted light from a white light source of 1100 cd/m2 with respect to the luminance at frontal 0° is 0.5 or more. According to the projection screen, it is possible to achieve both the background visibility when the projector is turned off and the frontal and diagonal visibility when the projector is turned on.

公开(公告)号：US20210191004A1

公开(公告)日：2021-06-24

申请号：US17119004

申请日：2020-12-11

Applicant: LINTEC CORPORATION

Inventor： Kentaro KUSAMA ,  Baku KATAGIRI ,  Tatsuki KURAMOTO

IPC: G02B5/02 ,  G06F3/147

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 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.

公开(公告)号：US20180284592A1

公开(公告)日：2018-10-04

申请号：US15895140

申请日：2018-02-13

Applicant: LINTEC Corporation

Inventor： Kentaro KUSAMA ,  Baku KATAGIRI

IPC: G03B21/62

CPC classification number: G03B21/62

Abstract: Provided is a projection screen that can effectively diffuse incident light coming from a wide range of angles in the transverse direction and the longitudinal direction and can provide a wide viewing angle even if the projection screen is applied to a large-sized screen. Disclosed is a projection screen including a light diffusion control plate, in which when a first direction and a second direction orthogonally intersecting each other are assumed to be on the surface of the light diffusion control plate, and when the incident angle of the light incident to the light diffusion control plate is defined such that an angle parallel to the normal line to the surface of the light diffusion control plate is defined as 0°, in a case in which the luminance of diffused light obtainable when light is incident at an incident angle of 0° is designated as L0; the luminance of diffused light obtainable when light is incident at a predetermined incident angle along the first direction is designated as L1; and the luminance of diffused light obtainable when light is incident at a predetermined incident angle along the second direction is designated as L2, there exist a first direction and a second direction, in which L0, L1, and L2 always satisfy the following relational expressions (1) and (2): L1≥0.25×L0  (1) L2≥0.25×L0  (2)

公开(公告)号：US20160070035A1

公开(公告)日：2016-03-10

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

CPC classification number: G02B5/0236 ,  G02B5/02 ,  G02B5/0242 ,  G02B5/0257 ,  G02B5/0268 ,  G02B5/0278 ,  G02B5/0294 ,  G02B6/0051 ,  G02F1/133504 ,  G02F1/133606 ,  G02F2001/133507

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.

Abstract translation: 一种用于显示器的光学扩散膜，特别是当应用于使用准直背光作为显示面板的背光的显示装置时，可以有效地将从准直背光源发出的高度定向的光朝向显示装置的前方发射，作为 图像显示光，而不允许高度定向的光的直接传输，并且提供了使用用于显示的光学漫射膜的显示装置。 公开了具有柱状结构的单层光学扩散膜，其中具有相对较高折射率的多个柱状物体被布置成在具有较低折射率的区域中在膜厚度方向上靠近在一起，其中 光扩散膜的膜厚度在60〜700μm的范围内，在膜平面的法线方向入射光的情况下得到的雾度值为80％以上， 更多。

公开(公告)号：US20230417959A1

公开(公告)日：2023-12-28

申请号：US18127733

申请日：2023-03-29

Applicant: LINTEC CORPORATION

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

IPC: G02B5/02

CPC classification number: G02B5/0236

Abstract: A viewing angle control film having an incident light diffusion angle region, wherein when the viewing angle control film is installed vertically to a ground surface, the incident light diffusion angle region in an up-down direction does not include a front face 0° in a horizontal direction with respect to the ground surface, and a total luminous transmittance at the front face 0° is 85% or more and 100% or less. The viewing angle control film preferably has a louver-shaped internal structure including a plurality of regions having a relatively high refractive index (plate-like high refractive index regions) in a region having a relatively low refractive index (low refractive index region).

公开(公告)号：US20220146719A1

公开(公告)日：2022-05-12

申请号：US17523145

申请日：2021-11-10

Applicant: LINTEC CORPORATION

Inventor： Baku KATAGIRI ,  Tatsuki KURAMOTO ,  Tetsuya ARAZOE ,  Kentaro KUSAMA

IPC: G02B5/02

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.