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1. 发明授权

US10310368B2 Projection screen 有权
公开(公告)号：US10310368B2
公开(公告)日：2019-06-04
申请号：US15895140
申请日：2018-02-13
申请人： LINTEC Corporation
发明人： Kentaro Kusama , Baku Katagiri
IPC分类号： G03B21/62 , G02B5/02
摘要： 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).

2. 发明授权

US09753191B2 Light diffusion film and light diffusion film manufacturing method 有权
公开(公告)号：US09753191B2
公开(公告)日：2017-09-05
申请号：US14774920
申请日：2014-02-25
申请人： LINTEC Corporation
发明人： Kentaro Kusama , Baku Katagiri , Tomoo Orui , Satoru Shoshi
IPC分类号： G02B5/02 , C08F299/06 , C08L33/14 , C08L55/00 , G02F1/1335
CPC分类号： G02B5/0247 , C08F299/065 , C08L33/14 , C08L55/005 , G02B5/0236 , G02B5/0257 , G02B5/0268 , G02B5/0278 , G02B2207/123 , G02F1/133504
摘要： 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.

3. 发明授权

US09632217B2 Light diffusion films and compositions for preparing the same 有权
公开(公告)号：US09632217B2
公开(公告)日：2017-04-25
申请号：US14774678
申请日：2014-02-04
申请人： LINTEC Corporation
发明人： Kentaro Kusama , Baku Katagiri , Tomoo Orui , Satoru Shoshi
IPC分类号： G02B5/02 , C08F283/00 , C08F290/14
CPC分类号： G02B5/0236 , C08F283/006 , C08F290/147 , C08J2367/02 , C08J2433/06 , C08J2475/16 , G02B5/0257 , G02B5/0268 , G02B5/0278 , G02B2207/123 , C08F220/30 , C08F2220/301
摘要： 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.

4. 发明授权

US11630248B2 Laminate and light diffusion control film 有权
公开(公告)号：US11630248B2
公开(公告)日：2023-04-18
申请号：US17083886
申请日：2020-10-29
申请人： LINTEC CORPORATION
发明人： Tatsuki Kuramoto , Kentaro Kusama , Baku Katagiri
IPC分类号： G02B5/02
摘要： 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.

5. 发明授权

US10288779B2 Light diffusion film and light diffusion film manufacturing method 有权
公开(公告)号：US10288779B2
公开(公告)日：2019-05-14
申请号：US15685311
申请日：2017-08-24
申请人： LINTEC Corporation
发明人： Kentaro Kusama , Baku Katagiri , Tomoo Orui , Satoru Shoshi
IPC分类号： G02B5/02 , C08L33/14 , C08L55/00 , C08F299/06 , G02F1/1335
摘要： 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.

6. 发明授权

US10185063B2 Optical-diffusion film for display and reflective display device using same 有权
公开(公告)号：US10185063B2
公开(公告)日：2019-01-22
申请号：US14786733
申请日：2014-03-13
申请人： LINTEC Corporation , TOHOKU University
发明人： Kentaro Kusama , Baku Katagiri , Tomoo Orui , Satoru Shoshi , Hideo Fujikake , Takahiro Ishinabe
IPC分类号： G02B5/02 , G02B1/04 , F21V8/00 , G02F1/1335
摘要： 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.

7. 发明授权

US10094958B2 Light diffusion film 有权
公开(公告)号：US10094958B2
公开(公告)日：2018-10-09
申请号：US14655696
申请日：2013-12-02
申请人： LINTEC Corporation
发明人： Baku Katagiri , Kentaro Kusama , Tomoo Orui
IPC分类号： G02B5/02 , G02B27/09 , G02F1/1335
摘要： 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

8. 发明授权

US11940635B2 Light diffusion control body and reflective display body 有权
公开(公告)号：US11940635B2
公开(公告)日：2024-03-26
申请号：US16997245
申请日：2020-08-19
申请人： LINTEC CORPORATION
发明人： Baku Katagiri , Kentaro Kusama , Tatsuki Kuramoto
IPC分类号： G02B5/02
CPC分类号： G02B5/0236 , G02B5/0284
摘要： 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°.

9. 发明授权

US11422401B2 Light diffusion film comprising an indentation elastic modulus of 30 MPa or more at 23 degrees Celsius throughout an entirety of the light diffusion film 有权
公开(公告)号：US11422401B2
公开(公告)日：2022-08-23
申请号：US16798520
申请日：2020-02-24
申请人： LINTEC CORPORATION
发明人： Tatsuki Kuramoto , Kentaro Kusama , Baku Katagiri
IPC分类号： G02F1/1335 , G02B5/02
摘要： A light diffusion 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 light diffusion film has an indentation elastic modulus of 30 MPa or more at 23° C.

10. 发明授权

US11307611B2 Reflective display body 有权
公开(公告)号：US11307611B2
公开(公告)日：2022-04-19
申请号：US17111699
申请日：2020-12-04
申请人： LINTEC CORPORATION
发明人： Baku Katagiri , Kentaro Kusama , Tatsuki Kuramoto
IPC分类号： G02F1/03 , G06F1/16 , G02B5/02
摘要： 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.

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