Patents by Inventor Yufeng Weng

Yufeng Weng has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Publication number: 20240061157
    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.
    Type: Application
    Filed: February 4, 2022
    Publication date: February 22, 2024
    Applicant: NITTO DENKO CORPORATION
    Inventors: Akiko TANAKA, Mizuho MIZUNO, Kozo NAKAMURA, Yufeng WENG
  • Publication number: 20230358942
    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.
    Type: Application
    Filed: July 16, 2021
    Publication date: November 9, 2023
    Applicant: Nitto Denko Corporation
    Inventors: Kozo NAKAMURA, Yufeng WENG, Takahiro YOSHIKAWA
  • Publication number: 20230296217
    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°.
    Type: Application
    Filed: July 19, 2021
    Publication date: September 21, 2023
    Applicant: NITTO DENKO CORPORATION
    Inventors: Takahiro YOSHIKAWA, Kozo NAKAMURA, Yufeng WENG
  • Publication number: 20230296823
    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.
    Type: Application
    Filed: August 4, 2021
    Publication date: September 21, 2023
    Applicant: NITTO DENKO CORPORATION
    Inventors: Kozo NAKAMURA, Minoru MIYATAKE, Yufeng WENG, Kari RINKO, Shingo MATSUMOTO
  • Publication number: 20230296242
    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.
    Type: Application
    Filed: July 16, 2021
    Publication date: September 21, 2023
    Applicant: NITTO DENKO CORPORATION
    Inventors: Kozo NAKAMURA, Yufeng WENG, Taishi OGAWA
  • Publication number: 20230288624
    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.
    Type: Application
    Filed: August 4, 2021
    Publication date: September 14, 2023
    Applicant: NITTO DENKO CORPORATION
    Inventors: Kozo NAKAMURA, Minoru MIYATAKE, Yufeng WENG, Kari RINKO, Shingo MATSUMOTO
  • Publication number: 20230280523
    Abstract: A lightguide component for illumination devices includes: a lightguide layer having a first principal face, a second principal face at an opposite side from the first principal face, and a light-receiving side face to receive light emitted from a light source; a first low-refractive index layer (20A) that is disposed at the first principal face side of the lightguide layer, the first low-refractive index layer having a refractive index nL1 which is smaller than a refractive index nGP of the lightguide layer; and a light distribution controlling structure (14A, 14B) capable of at least directing a portion of light propagating in the lightguide layer toward the first low-refractive index layer or in an opposite direction from the first low-refractive index layer. The lightguide component has a visible light transmittance of 60% or more, and a haze value of less than 10%.
    Type: Application
    Filed: July 27, 2021
    Publication date: September 7, 2023
    Applicant: NITTO DENKO CORPORATION
    Inventors: Kozo NAKAMURA, Yufeng WENG, Takahiro YOSHIKAWA
  • Publication number: 20230280005
    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.
    Type: Application
    Filed: July 19, 2021
    Publication date: September 7, 2023
    Applicant: NITTO DENKO CORPORATION
    Inventors: Takahiro YOSHIKAWA, Kozo NAKAMURA, Yufeng WENG
  • Publication number: 20230273363
    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).
    Type: Application
    Filed: August 4, 2021
    Publication date: August 31, 2023
    Applicant: NITTO DENKO CORPORATION
    Inventors: Kozo NAKAMURA, Minoru MIYATAKE, Yufeng WENG, Kari RINKO, Shingo MATSUMOTO
  • Publication number: 20220035085
    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.
    Type: Application
    Filed: September 27, 2019
    Publication date: February 3, 2022
    Applicant: NITTO DENKO CORPORATION
    Inventors: Yufeng Weng, Hironaka Fujii
  • Publication number: 20210181574
    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.
    Type: Application
    Filed: November 29, 2018
    Publication date: June 17, 2021
    Applicant: NITTO DENKO CORPORATION
    Inventors: Kozo Nakamura, Takahiro Yoshikawa, Yufeng Weng, Peng Wang, Michael Welch, Shijun Zheng
  • Patent number: 10508487
    Abstract: A light adjustment system is, for example, a light adjustment window (1) including: a windowpane (11); a light adjustment device (40); a drive device (50); and a frame (20) having an incorporating (24) into which the windowpane (11) and the drive device (50) are incorporated. A part of the frame (20) includes: a containing section (26) that contains at least a part of the drive device (50); and an opening and closing section (27) that openably and closably covers the containing section (26).
    Type: Grant
    Filed: May 6, 2016
    Date of Patent: December 17, 2019
    Assignee: SHARP KABUSHIKI KAISHA
    Inventors: Eiji Satoh, Nobuyuki Ito, Yufeng Weng
  • Publication number: 20190004389
    Abstract: Provided is a light reflective material that enables stable switching between light transmission and light reflection when used in a light control device. A light reflective material includes a base, a conducting film that is stacked on the surface of the base, and an insulating film that is stacked on the surface of the conducting film. A first region where the conducting film is not formed is present in a layer where the conducting film lies. A second region where the insulating film is not formed is present in a layer where the insulating film lies. The first region and the second region at least partially overlap each other.
    Type: Application
    Filed: August 24, 2016
    Publication date: January 3, 2019
    Applicant: SHARP KABUSHIKI KAISHA
    Inventors: NOBUYUKI ITO, EIJI SATOH, YUFENG WENG
  • Publication number: 20180195340
    Abstract: A light adjustment system is, for example, a light adjustment window (1) including: a windowpane (11); a light adjustment device (40); a drive device (50); and a frame (20) having an incorporating (24) into which the windowpane (11) and the drive device (50) are incorporated. A part of the frame (20) includes: a containing section (26) that contains at least a part of the drive device (50); and an opening and closing section (27) that openably and closably covers the containing section (26).
    Type: Application
    Filed: May 6, 2016
    Publication date: July 12, 2018
    Inventors: EIJI SATOH, NOBUYUKI ITO, YUFENG WENG
  • Patent number: 9818911
    Abstract: A semiconductor light-emitting element includes a substrate and a semiconductor stack portion provided on the substrate and having at least a first-conductivity-type semiconductor layer, a light-emitting layer, and a second-conductivity-type semiconductor layer. The substrate has a property to allow transmission of light from the light-emitting layer, and has a hexahedral shape including a first surface on which a semiconductor stack portion is provided, a second surface located opposite to the first surface, a pair of third surfaces orthogonal to the first surface and the second surface, and a pair of fourth surfaces orthogonal to the first surface and the second surface and different from the pair of third surfaces.
    Type: Grant
    Filed: August 31, 2016
    Date of Patent: November 14, 2017
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Hiroaki Yamamoto, Susumu Ohmi, Yufeng Weng, Kiminori Tanabe
  • Publication number: 20160372632
    Abstract: A semiconductor light-emitting element includes a substrate and a semiconductor stack portion provided on the substrate and having at least a first-conductivity-type semiconductor layer, a light-emitting layer, and a second-conductivity-type semiconductor layer. The substrate has a property to allow transmission of light from the light-emitting layer, and has a hexahedral shape including a first surface on which a semiconductor stack portion is provided, a second surface located opposite to the first surface, a pair of third surfaces orthogonal to the first surface and the second surface, and a pair of fourth surfaces orthogonal to the first surface and the second surface and different from the pair of third surfaces.
    Type: Application
    Filed: August 31, 2016
    Publication date: December 22, 2016
    Applicant: Sharp Kabushiki Kaisha
    Inventors: Hiroaki YAMAMOTO, Susumu OHMI, Yufeng WENG, Kiminori TANABE
  • Patent number: 9466763
    Abstract: A semiconductor light-emitting element includes a substrate and a semiconductor stack portion provided on the substrate and having at least a first-conductivity-type semiconductor layer, a light-emitting layer, and a second-conductivity-type semiconductor layer. The substrate has a property to allow transmission of light from the light-emitting layer, and has a hexahedral shape including a first surface on which a semiconductor stack portion is provided, a second surface located opposite to the first surface, a pair of third surfaces orthogonal to the first surface and the second surface, and a pair of fourth surfaces orthogonal to the first surface and the second surface and different from the pair of third surfaces.
    Type: Grant
    Filed: June 10, 2014
    Date of Patent: October 11, 2016
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Hiroaki Yamamoto, Susumu Ohmi, Yufeng Weng, Kiminori Tanabe
  • Publication number: 20150349202
    Abstract: A semiconductor light-emitting element includes a substrate and a semiconductor stack portion provided on the substrate and having at least a first-conductivity-type semiconductor layer, a light-emitting layer, and a second-conductivity-type semiconductor layer. The substrate has a property to allow transmission of light from the light-emitting layer, and has a hexahedral shape including a first surface on which a semiconductor stack portion is provided, a second surface located opposite to the first surface, a pair of third surfaces orthogonal to the first surface and the second surface, and a pair of fourth surfaces orthogonal to the first surface and the second surface and different from the pair of third surfaces.
    Type: Application
    Filed: June 10, 2014
    Publication date: December 3, 2015
    Applicant: Sharp Kabushiki Kaisha
    Inventors: Hiroaki YAMAMOTO, Susumu OHMI, Yufeng WENG, Kiminori TANABE
  • Patent number: 8829559
    Abstract: In a nitride semiconductor light-emitting device having an n-side and a p-side electrode pad formed on the same side of a substrate wherein current distribution in the light-emitting device is improved by forming branch electrodes extended from the p-side electrode pad (and the n-side electrode pad), when sheet resistance values of n-side and p-side layers in the device are low enough, contact resistance between a p-type nitride semiconductor layer and a current diffusion layer of a transparent conductive film formed thereon is reduced and in-plane distribution of the sheet resistance is made uniform whereby improving the optical output, by increasing in a prescribed condition the sheet resistance value of the current diffusion layer.
    Type: Grant
    Filed: March 29, 2012
    Date of Patent: September 9, 2014
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Yufeng Weng, Michael Brockley
  • Publication number: 20140225062
    Abstract: A nitride semiconductor light emitting element is provided with: a substrate; a nitride semiconductor laminate section on the substrate; a current diffusion layer that is provided on the nitride semiconductor laminate section; a first protection film that is provided on the current diffusion layer; and a first electrode. The nitride semiconductor laminate section has: a first conductivity-type nitride semiconductor layer that is provided on the substrate; an active layer that is provided on the first conductivity-type nitride semiconductor layer; and a second conductivity-type nitride semiconductor layer that is provided on the active layer. The first electrode is electrically connected to the first conductivity-type nitride semiconductor layer. Furthermore, a part of the first electrode is formed above the second conductivity-type nitride semiconductor layer with the first protection film therebetween.
    Type: Application
    Filed: July 30, 2012
    Publication date: August 14, 2014
    Applicant: Sharp Kabushiki Kaisha
    Inventor: Yufeng Weng