Patents by Inventor Kosuke Takayama

Kosuke Takayama 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: 20210157088
    Abstract: An optical element includes: a glass substrate; an optical function portion made of a resin; and a bonding portion that bonds the glass substrate and the optical function portion to each other. The bonding portion has a glass transition point of 85° C. or lower. The glass transition point of the bonding portion may be 50° C. or lower.
    Type: Application
    Filed: February 4, 2021
    Publication date: May 27, 2021
    Applicant: AGC Inc.
    Inventors: Koji MIYASAKA, Jin UEMURA, Gousuke YOSHIDA, Kosuke TAKAYAMA
  • Patent number: 10082603
    Abstract: A method of producing an optical component includes a transfer step of sandwiching a molding material layer of a molding material between a thin glass plate and a mold and transferring an indented pattern on the mold to the molding material layer to form a patterned indented layer on the thin glass plate, and a separation step of separating the mold from the patterned indented layer. During the transfer step, a reinforcing plate is removably attached to the thin glass plate.
    Type: Grant
    Filed: November 24, 2014
    Date of Patent: September 25, 2018
    Assignee: AGC Inc.
    Inventors: Hiroshi Sakamoto, Kosuke Takayama, Junichi Kakuta, Yuriko Kaida
  • Publication number: 20180224581
    Abstract: To provide a lenticular structure having a lenticular lens having a high size accuracy and formed on the entire main surface of a light guide plate, which includes the vicinity of an end surface. A lenticular structure including a lenticular lens in which a plurality of cylindrical lenses linearly extending are arranged in parallel in one direction on at least one main surface of a glass light guide plate main body having a rectangular shape in plan view, wherein the cylindrical lenses are cured products of a UV curable resin, the light guide plate body has a plate thickness deviation (TTV) value of at most 0.2 mm, the amount of curvature in each side direction of the rectangle is at most 0.6 mm, and the difference in length between two opposing sides is within 2.5 mm.
    Type: Application
    Filed: April 3, 2018
    Publication date: August 9, 2018
    Applicant: ASAHI GLASS COMPANY, LIMITED
    Inventors: Kosuke TAKAYAMA, Yuki Kondo
  • Patent number: 9921371
    Abstract: A light guide element includes a light-guiding substrate and a diffraction part formed on a surface of the light-guiding substrate. The diffraction part includes an optical layer capable of exerting a diffractive action. The distance from the light-guiding substrate to a surface of the optical layer is equal to or less than 10% of a thickness of the light-guiding substrate. The light guide element satisfies |?D|?0.15 mm, where ?D is an amount of a change in D with the temperature change ?T, D [mm] is a distance, at the temperature T (° C.), between the center of the diffraction part and a position predetermined as a position where the ray of light comes out of the light-guiding substrate in a direction horizontal with respect to the light-guiding substrate, and ?T is a temperature change.
    Type: Grant
    Filed: August 11, 2016
    Date of Patent: March 20, 2018
    Assignee: ASAHI GLASS COMPANY, LIMITED
    Inventors: Koji Miyasaka, Yukihiro Tao, Kosuke Takayama
  • Publication number: 20160349517
    Abstract: A light guide element includes a light-guiding substrate and a diffraction part formed on a surface of the light-guiding substrate. The diffraction part includes an optical layer capable of exerting a diffractive action. The distance from the light-guiding substrate to a surface of the optical layer is equal to or less than 10% of a thickness of the light-guiding substrate. The light guide element satisfies |?D|?0.15 mm, where ?D is an amount of a change in D with the temperature change ?T, D [mm] is a distance, at the temperature T (° C.), between the center of the diffraction part and a position predetermined as a position where the ray of light comes out of the light-guiding substrate in a direction horizontal with respect to the light-guiding substrate, and ?T is a temperature change.
    Type: Application
    Filed: August 11, 2016
    Publication date: December 1, 2016
    Applicant: Asahi Glass Company, Limited
    Inventors: Koji MIYASAKA, Yukihiro TAO, Kosuke TAKAYAMA
  • Publication number: 20150115495
    Abstract: An imprinting method includes applying a forming material onto a glass sheet, forming a concavo-convex layer on the glass sheet by holding a layer of the forming material between the glass sheet and a mold and transferring a concavo-convex pattern of the mold to the layer of the forming material, and cutting a laminated sheet including the glass sheet and the concavo-convex layer. The forming material is applied to a position distant from a cutting position of the cutting.
    Type: Application
    Filed: January 9, 2015
    Publication date: April 30, 2015
    Applicant: Asahi Glass Company, Limited
    Inventors: Hiroshi SAKAMOTO, Kosuke TAKAYAMA, Yuriko KAIDA
  • Publication number: 20150079354
    Abstract: A method of producing an optical component includes a transfer step of sandwiching a molding material layer of a molding material between a thin glass plate and a mold and transferring an indented pattern on the mold to the molding material layer to form a patterned indented layer on the thin glass plate, and a separation step of separating the mold from the patterned indented layer. During the transfer step, a reinforcing plate is removably attached to the thin glass plate.
    Type: Application
    Filed: November 24, 2014
    Publication date: March 19, 2015
    Applicant: ASAHI GLASS COMPANY, LIMITED
    Inventors: Hiroshi SAKAMOTO, Kosuke TAKAYAMA, Junichi KAKUTA, Yuriko KAIDA
  • Publication number: 20150014893
    Abstract: To provide a process for producing an article having a fine pattern on its surface, by which peeling of a cured resin layer having a fine pattern is suppressed, and a defect of the cured resin layer by repelling when a photocurable resin composition is applied is suppressed.
    Type: Application
    Filed: September 25, 2014
    Publication date: January 15, 2015
    Applicant: ASAHI GLASS COMPANY, LIMITED
    Inventors: Kosuke TAKAYAMA, Hiroshi SAKAMOTO, Yuriko KAIDA, Shinji OKADA, Yasuhide KAWAGUCHI
  • Patent number: 8709317
    Abstract: To provide a mold for nanoimprinting capable of accurately transcribing a fine concavo-convex structure, available at a low cost and having high durability, its production process, and processes for producing a molded resin having a fine concavo5 convex structure on its surface having the fine concavo-convex structure of the mold accurately transcribed, and a wire-grid polarizer, with high productivity. A mold 10 for nanoimprinting having on its mold surface a fine concavo-convex structure comprising a plurality of grooves 14 formed in parallel with one another at a constant pitch, which comprises a mold base 12 made of a resin having on its surface a 10 fine concavo-convex structure to be the base of the fine concavo-convex structure, a metal oxide layer 16 covering the surface having the fine concavo-convex structure of the mold base 12, and a release layer 18 covering the surface of the metal oxide layer 16, is used.
    Type: Grant
    Filed: May 8, 2012
    Date of Patent: April 29, 2014
    Assignee: Asahi Glass Company, Limited
    Inventors: Yuriko Kaida, Hiroshi Sakamoto, Takahira Miyagi, Kosuke Takayama, Eiji Shidoji
  • Publication number: 20120247950
    Abstract: To provide a mold for nanoimprinting capable of accurately transcribing a fine concavo-convex structure, available at a low cost and having high durability, its production process, and processes for producing a molded resin having a fine concavo5 convex structure on its surface having the fine concavo-convex structure of the mold accurately transcribed, and a wire-grid polarizer, with high productivity. A mold 10 for nanoimprinting having on its mold surface a fine concavo-convex structure comprising a plurality of grooves 14 formed in parallel with one another at a constant pitch, which comprises a mold base 12 made of a resin having on its surface a 10 fine concavo-convex structure to be the base of the fine concavo-convex structure, a metal oxide layer 16 covering the surface having the fine concavo-convex structure of the mold base 12, and a release layer 18 covering the surface of the metal oxide layer 16, is used.
    Type: Application
    Filed: May 8, 2012
    Publication date: October 4, 2012
    Inventors: Yuriko KAIDA, Hiroshi Sakamoto, Takahira Miyagi, Kosuke Takayama, Eiji Shidoji
  • Publication number: 20110096396
    Abstract: A wire-grid polarizer having a high polarization separation ability in the visible light region and an improved transmittance in a short wavelength region, and a process for easily producing such a wire-grid polarizer, are provided. A wire-grid polarizer 10 comprising a light-transmitting substrate 14 having a surface on which a plurality of ridges 12 are formed in parallel with one another at a predetermined pitch; an underlayer 22 made of a metal oxide and present at least on a top portion of each ridge 12; and a metal wire made of a metal layer 24 and present on a surface of the underlayer 22 to cover at least a top portion of each ridge 12.
    Type: Application
    Filed: January 7, 2011
    Publication date: April 28, 2011
    Inventors: Yuriko KAIDA, Hiroshi Sakamoto, Takahira Miyagi, Kosuke Takayama, Hiromi Sakurai, Eiji Shidoji
  • Publication number: 20110084424
    Abstract: To provide a mold for nanoimprinting capable of accurately transcribing a fine concavo-convex structure, available at a low cost and having high durability, its production process, and processes for producing a molded resin having a fine concavo-convex structure on its surface having the fine concavo-convex structure of the mold accurately transcribed, and a wire-grid polarizer, with high productivity. A mold 10 for nanoimprinting having on its mold surface a fine concavo-convex structure comprising a plurality of grooves 14 formed in parallel with one another at a constant pitch, which comprises a mold base 12 made of a resin having on its surface a fine concavo-convex structure to be the base of the fine concavo-convex structure, a metal oxide layer 16 covering the surface having the fine concavo-convex structure of the mold base 12, and a release layer 18 covering the surface of the metal oxide layer 16, is used.
    Type: Application
    Filed: December 3, 2010
    Publication date: April 14, 2011
    Inventors: Yuriko Kaida, Hiroshi Sakamoto, Takahira Miyagi, Kosuke Takayama, Eiji Shidoji