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公开(公告)号：US20230358942A1
公开(公告)日：2023-11-09
申请号：US18017494
申请日：2021-07-16
Applicant: Nitto Denko Corporation
Inventor： Kozo NAKAMURA , Yufeng WENG , Takahiro YOSHIKAWA
IPC: F21V8/00
CPC classification number: G02B6/0038 , G02B6/0065 , G02B6/0041 , 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.
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公开(公告)号：US20230296242A1
公开(公告)日：2023-09-21
申请号：US18017248
申请日：2021-07-16
Applicant: NITTO DENKO CORPORATION
Inventor： Kozo NAKAMURA , Yufeng WENG , Taishi OGAWA
CPC classification number: F21V33/006 , E04B2/56 , A01G9/249 , F21V2200/20
Abstract: A construction according to the invention is a construction including a framework formed by first framework members and second framework members, and panels held by the framework. One or more of the panels can transmit visible light. One or more of the panels that can transmit visible light is a lighting device. The lighting device includes a light source, and a light guide that can transmit visible light and includes a light guide plate to guide light emitted from the light source. The light guide plate includes a light incident surface facing the light source and into which the light emitted from the light source enters, a first principal surface on the interior of the construction and from which the light guided in the light guide plate exits, and a second principal surface on the exterior of the construction and opposing the first principal surface.
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3.发明公开公开(公告)号：US20230296217A1
公开(公告)日：2023-09-21
申请号：US18017240
申请日：2021-07-19
Applicant: NITTO DENKO CORPORATION
Inventor： Takahiro YOSHIKAWA , Kozo NAKAMURA , Yufeng WENG
CPC classification number: F21S8/036 , F21K9/233 , F21K9/61 , F21K9/69 , F21W2131/30
Abstract: An angle at which an intensity becomes maximum in a light distribution of light emitted from a center of a light emitting surface of a surface illumination device is in a range of −90° or more to less than 0° in a plane including a vertical axis and perpendicular to the light emitting surface, in a case where an axis passing through the center of the light emitting surface and perpendicular to the floor surface is defined as the vertical axis, and in the plane, a direction extending from the center of the light emitting surface toward the floor surface is defined as −90°, a direction extending from the center of the light emitting surface toward a side opposite to the floor surface is defined as +90°, and a direction orthogonal to the light emitting surface is defined as vertical 0°.
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公开(公告)号：US20230280005A1
公开(公告)日：2023-09-07
申请号：US18017503
申请日：2021-07-19
Applicant: NITTO DENKO CORPORATION
Inventor： Takahiro YOSHIKAWA , Kozo NAKAMURA , Yufeng WENG
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.
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公开(公告)号：US20230273363A1
公开(公告)日：2023-08-31
申请号：US18019301
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: G02B6/0031
Abstract: An optical incoupling element (100) provided in the form of a discrete item attachable on a lightguide (20) is provided, comprising a substrate (100A) and at least one three-dimensionally formed optical surface (104). The optical surface (104) is configured to incouple light incident thereto and to adjust direction of the incoupled light transmitted through an optical contact surface (107) established at an interface between the element substrate (100A) and a lightguide medium (20) such, that the incoupled light acquires a propagation path through a lightguide medium (20) via a series of total internal reflections. The optical surface (104) may comprise at least on optical cavity pattern (101). The element (100) is configured to receive light onto said at least one three-dimensionally formed optical surface (104) from a direction essentially parallel to a longitudinal plane of the planar lightguide (20). A method for manufacturing the optical incoupling element (100), related arrangement, optical unit (250) and uses are further provided.
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Patent Agency Ranking
公开(公告)号：US20240230978A1
公开(公告)日：2024-07-11
申请号：US18288433
申请日：2022-06-16
Applicant: NITTO DENKO CORPORATION
Inventor： Yufeng WENG , Kozo NAKAMURA , Takahiro YOSHIKAWA
IPC: F21V8/00
CPC classification number: G02B6/006 , G02B6/0035
Abstract: A lightguide component for light emission devices has a first principal face and a second principal face at an opposite side from the first principal face. The lightguide component for light emission devices includes: a lightguide layer including a light-receiving portion to receive light emitted from a light source, a third principal face at the first principal face side, and a fourth principal face at the second principal face side; and a light distribution controlling structure having a plurality of internal spaces, the plurality of internal spaces creating interfaces to direct a portion of the light propagating in the lightguide layer toward the first principal face via total internal reflection. In a plan view a first region in which the light distribution controlling structure is present and a second region in which the light distribution controlling structure is not present are disposed so as to define a predetermined design.
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公开(公告)号：US20240272343A1
公开(公告)日：2024-08-15
申请号：US18568344
申请日：2022-06-08
Applicant: NITTO DENKO CORPORATION
Inventor： Koichi INOUE , Yufeng WENG , Kozo NAKAMURA
CPC classification number: G02B6/0016 , G02B1/11 , G02B6/0018 , G02B6/003 , G02B6/0073
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.
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公开(公告)号：US20240061157A1
公开(公告)日：2024-02-22
申请号：US18270045
申请日：2022-02-04
Applicant: NITTO DENKO CORPORATION
Inventor： Akiko TANAKA , Mizuho MIZUNO , Kozo NAKAMURA , Yufeng WENG
IPC: G02B5/02 , C09J11/06 , C09J133/14 , C09J133/08 , C09J167/00
CPC classification number: G02B5/0231 , G02B5/0268 , C09J11/06 , C09J133/14 , C09J133/08 , C09J167/00 , C09J2301/312
Abstract: An optical stack includes: a first optical sheet having a first principal face with a concavo-convex structure and a second principal face at an opposite side from the first principal face; and an adhesive layer that is disposed on the first principal face of the first optical sheet. The concavo-convex structure includes a plurality of dents and flat portions between adjacent ones of the plurality of dents. A surface of the adhesive layer and the first principal face of the first optical sheet together define an internal space within each of the plurality of dents. Each of the plurality of dents satisfies 0.10≤(C−A)/C 1.00 and 0.75≤(C−A)/(C−B), where A is a maximum height value of the adhesive layer existing in that dent; B is a minimum height value of the adhesive layer existing in that dent; and C is a depth of that dent.
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公开(公告)号：US20230296823A1
公开(公告)日：2023-09-21
申请号：US18019298
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: G02B6/0055 , G02B6/0016 , G02B6/002 , G02B6/0073 , G02B6/0068 , G02B6/0026 , G02B6/0065 , G02B6/0088
Abstract: An optical incoupling tape (50) attachable on a lightguide (20) is provided, comprising a substrate (50A) and at least one pattern (51) formed with a number of periodic pattern features (52) embedded in the substrate (50A) and configured as optically functional cavities (52) filled with a material having a refractive index different from the refractive index of the material of the substrate (50A) surrounding the cavity (52). The pattern (51) is configured to incouple light incident thereto and to adjust direction of the incoupled light such, that the incoupled light acquires a propagation path through a lightguide medium (20) via a series of total internal reflections. A method for manufacturing the tape (50), related uses and an optical apparatus comprising the tape (50) integrated with a light emitter device (22) are further provided.
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公开(公告)号：US20230288624A1
公开(公告)日：2023-09-14
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.
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