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：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：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.

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：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：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.

公开(公告)号：US20210132268A1

公开(公告)日：2021-05-06

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.