公开(公告)号：US20220035085A1

公开(公告)日：2022-02-03

申请号：US17280280

申请日：2019-09-27

Applicant: NITTO DENKO CORPORATION

Inventor： Yufeng Weng ,  Hironaka Fujii

IPC: G02B5/22 ,  C08G59/24 ,  C08G59/26 ,  C08G59/42 ,  C08G59/68 ,  C08K3/04 ,  C08K5/3417

Abstract: The present invention relates to a resin composition containing a transparent resin and a light absorber, wherein a cured product of the resin composition has an absorption maximum wavelength in a wavelength range of 550 to 720 nm.

公开(公告)号：US12147068B2

公开(公告)日：2024-11-19

申请号：US18568344

申请日：2022-06-08

Applicant: NITTO DENKO CORPORATION

Inventor： Koichi Inoue ,  Yufeng Weng ,  Kozo Nakamura

IPC: F21V8/00 ,  G02B1/11

Abstract: A lightguide component for illumination devices having first and second exit surfaces at opposite sides, the lightguide component including: a light-receiving portion to receive light emitted from a light source; a lightguide layer having a first principal face at the first exit surface side and a second principal face at the second exit surface side; and a light distribution controlling structure having a plurality of internal spaces. Each of the plurality of internal spaces includes a first slope to direct a portion of light propagating in the lightguide layer toward the first exit surface via total internal reflection, and a second slope at an opposite side from the first slope, and the lightguide component is configured to emit first light having a first intensity distribution through the first exit surface and to emit second light having a second intensity distribution through the second exit surface.

公开(公告)号：US12078837B2

公开(公告)日：2024-09-03

申请号：US18019284

申请日：2021-08-04

Applicant: NITTO DENKO CORPORATION

Inventor： Kozo Nakamura ,  Minoru Miyatake ,  Yufeng Weng ,  Kari Rinko ,  Shingo Matsumoto

IPC: F21V8/00

CPC classification number: G02B6/0023 ,  G02B6/0065

Abstract: An optical deflection tape (10) attachable on a lightguide (20) is provided, comprising a substrate (10A) and at least one pattern (11) formed with a number of periodic pattern features (12) embedded in the substrate (10A) and configured as optically functional cavities (12) filled with a material having a refractive index different from the refractive index of the material of the substrate (10A) surrounding the cavity (12). The pattern (11) is configured to adjust direction of light received thereto such, that light incident at the pattern (11) is deflected to acquire a propagation path through a lightguide medium (20) via a series of total internal reflections and, by virtue of said at least one pattern (11), the optical deflection tape (10) is configured to control distribution of light propagating through the lightguide (20). A method for manufacturing the tape (10) and related uses are further provided.

公开(公告)号：US20240094453A1

公开(公告)日：2024-03-21

申请号：US18274235

申请日：2021-12-21

Applicant: NITTO DENKO CORPORATION

Inventor： Yuji Toyota ,  Yufeng Weng

IPC: G02B5/30

CPC classification number: G02B5/3025 ,  G02B5/3083

Abstract: According to the present invention, a technology by which the design property of a section can be improved while a desired portion in the section is shielded can be achieved. The present invention provides a polarized partition set, including: a first polarized partition, which includes a polarizer A1 and a retardation layer having an in-plane retardation Re(550) of 100 nm or more, and in which an angle formed by an absorption axis direction of the polarizer A1 and a slow axis direction of the retardation layer is more than 10° and less than 80°, or more than 100° and less than 170° clockwise or counterclockwise with respect to the absorption axis direction of the polarizer A1; and a second polarized partition, which includes a polarizer B and is arranged at a predetermined interval from the first polarized partition.

公开(公告)号：US12105313B2

公开(公告)日：2024-10-01

申请号：US18017494

申请日：2021-07-16

Applicant: Nitto Denko Corporation

Inventor： Kozo Nakamura ,  Yufeng Weng ,  Takahiro Yoshikawa

IPC: G02B6/00 ,  F21V8/00

CPC classification number: G02B6/0038 ,  G02B6/0041 ,  G02B6/0065 ,  G02B6/0073

Abstract: A lighting device that can ensure task productivity while reducing the glare is provided herein. The lighting device has a light source; and a light guiding part including a light guiding panel and configured to guide light that is emitted from the light source. The light guiding panel includes: a light incident end surface that is situated facing the light source, the light incident end surface being a surface on which the light emitted from the light source is incident; a first light emitting part that is included in an opposite end from the light incident end surface, and that emits the light guided inside the light guiding panel; and a second light emitting part that is included in a predetermined main surface of the light guiding panel that intersects with the light incident end surface, and that emits the light guided inside the light guiding panel.

公开(公告)号：US11940120B2

公开(公告)日：2024-03-26

申请号：US18017503

申请日：2021-07-19

Applicant: NITTO DENKO CORPORATION

Inventor： Takahiro Yoshikawa ,  Kozo Nakamura ,  Yufeng Weng

IPC: F21S6/00 ,  F21V8/00

CPC classification number: F21S6/003 ,  G02B6/005

Abstract: A desktop illumination device includes a light source; and a light guide including a light guide plate. The light guide plate has a light incident surface and first and second main surfaces. An angle at which an intensity becomes maximum in a light distribution of light emitted from the first main surface is in a range of −90° or more to less than 0°, in a case where an axis passing through a center of the first main surface and perpendicular to an installation surface is defined as a vertical axis, and in a plane including the vertical axis and perpendicular to the installation surface, a direction parallel to the installation surface is defined as vertical 0°, an upward angle with respect to the vertical 0° is defined as a positive angle, and a downward angle with respect to the vertical 0° is defined as a negative angle.

公开(公告)号：US20210181574A1

公开(公告)日：2021-06-17

申请号：US16767720

申请日：2018-11-29

Applicant: NITTO DENKO CORPORATION

Inventor： Kozo Nakamura ,  Takahiro Yoshikawa ,  Yufeng Weng ,  Peng Wang ,  Michael Welch ,  Shijun Zheng

IPC: G02F1/1335 ,  C09J133/06 ,  C09J7/38 ,  H01L51/50

Abstract: An investigation made by the inventors has found that when the pressure-sensitive adhesive layer having incorporated thereinto tetraazaporphyrin is used as a color correction member, the layer absorbs light having a wavelength around 545 nm, and hence the brightness of a panel including the layer reduces. A color correction member is disclosed that can satisfactorily achieve both of the widening of the color gamut of an image display apparatus and the prevention of a reduction in brightness thereof. A color correction member, which is characterized in that, when a value of an absorption peak at from 580 nm to 610 nm of an absorption spectrum is represented by Amax, and a value of an absorbance at 545 nm of the absorption spectrum is represented by A545, a ratio A545/Amax is 0.13 or less.