Patents by Inventor Naoto Konegawa

Naoto Konegawa 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: 20210294036
    Abstract: An opto-electric hybrid board connector includes an opto-electric hybrid board extending along a transmission direction of light in an optical waveguide, and a connector to which an attached region of the opto-electric hybrid board is attached. The attached region has a board front end surface for inputting and outputting light to and from the optical waveguide. The connector has a connector front end surface disposed to be flush with the board front end surface. The surface roughness SRa1 of the board front end surface is 0.2 ?m or more and 3 ?m or less. A difference D between the surface roughness SRa1 of the board front end surface and the surface roughness SRa2 of the connector front end surface is 1 ?m or less.
    Type: Application
    Filed: July 25, 2019
    Publication date: September 23, 2021
    Applicant: NITTO DENKO CORPORATION
    Inventor: Naoto KONEGAWA
  • Publication number: 20210294043
    Abstract: An opto-electric hybrid board connector includes an opto-electric hybrid board, a connector, and an adhesive member. The board has a bottom surface, a first side surface, and a second side surface. The connector has an inner bottom surface, a first inner side surface, and a second inner side surface. The adhesive member includes a first adhesive member having contact with the inner bottom surface, first inner side surface, and first side surface facing a first gap, and a second adhesive member filled in the first gap and having contact with the inner bottom surface, second inner side surface, and second side surface facing a second gap. A ratio (L1/L0) of a width L1 of the first gap to a width L0 of the inner bottom surface, and a ratio (L2/L0) of a width L2 of the second gap to the width L0 of the inner bottom surface are 0.01 or more.
    Type: Application
    Filed: July 25, 2019
    Publication date: September 23, 2021
    Applicant: NITTO DENKO CORPORATION
    Inventor: Naoto KONEGAWA
  • Publication number: 20210294050
    Abstract: An optical element device includes an opto-electric hybrid board sequentially including an optical waveguide having a mirror, and an electric circuit board having a terminal in a thickness direction, and an optical element optically connected to the mirror and electrically connected to the terminal. The opto-electric hybrid board includes a mounting region including the mirror and the terminal when projected in the thickness direction and mounted with the optical element. Furthermore, the opto-electric hybrid board includes an alignment mark for aligning the optical element with respect to the mirror. The alignment mark is made of a material for forming the optical waveguide, and disposed at both outer sides of the mounting region in a width direction.
    Type: Application
    Filed: July 25, 2019
    Publication date: September 23, 2021
    Applicant: NITTO DENKO CORPORATION
    Inventor: Naoto KONEGAWA
  • Patent number: 11119274
    Abstract: An optical waveguide includes a core extending in a transmission direction of light, a clad covering the core along the transmission direction, and a mixing layer containing a material for the core and a material for the clad on the interface between the core and the clad, and the mixing layer includes a plurality of regions each having a different thickness in the transmission direction.
    Type: Grant
    Filed: August 22, 2018
    Date of Patent: September 14, 2021
    Assignee: NITTO DENKO CORPORATION
    Inventors: Naoto Konegawa, Yuichi Tsujita
  • Patent number: 11022768
    Abstract: An opto-electric hybrid board includes an optical waveguide and an electric circuit board. The opto-electric hybrid board has an electrode at one end portion in a first direction perpendicular to the thickness direction, and optically and electrically connects an optical element emitting light from a space between the one end portion and the other end portion. The electric circuit board includes a terminal portion electrically connected to the electrode and a support portion that supports the other end portion. The optical waveguide includes a light receiving portion for receiving light emitted from the optical element, which is positioned between the terminal portion and the support portion, when projected in the thickness direction, and a one-side surface in the thickness direction of the terminal portion is positioned at the other side in the thickness direction with respect to a one-side surface in the thickness direction of the support portion.
    Type: Grant
    Filed: March 29, 2018
    Date of Patent: June 1, 2021
    Assignee: NITTO DENKO CORPORATION
    Inventors: Naoto Konegawa, Yuichi Tsujita, Naoyuki Tanaka
  • Patent number: 11016244
    Abstract: An optical waveguide member connector kit includes an optical waveguide member including an optical waveguide and a connector having an accommodation space that is capable of accommodating the optical waveguide member. When the optical waveguide member is accommodated in the accommodation space, the connector has an opening portion reaching the optical waveguide member from the outside of the connector and when the optical waveguide member is accommodated in the accommodation space, at least one of the optical waveguide member and the connector includes a groove communicating with the opening portion facing at least the other side of the optical waveguide member and the connector.
    Type: Grant
    Filed: March 29, 2018
    Date of Patent: May 25, 2021
    Assignee: NITTO DENKO CORPORATION
    Inventors: Naoto Konegawa, Yuichi Tsujita
  • Publication number: 20210033786
    Abstract: An optical waveguide member connector kit includes an optical waveguide member including an optical waveguide and a connector having an accommodation space that is capable of accommodating the optical waveguide member. When the optical waveguide member is accommodated in the accommodation space, the connector has an opening portion reaching the optical waveguide member from the outside of the connector and when the optical waveguide member is accommodated in the accommodation space, at least one of the optical waveguide member and the connector includes a groove communicating with the opening portion facing at least the other side of the optical waveguide member and the connector.
    Type: Application
    Filed: March 29, 2018
    Publication date: February 4, 2021
    Applicant: NITTO DENKO CORPORATION
    Inventors: Naoto KONEGAWA, Yuichi TSUJITA
  • Patent number: 10845554
    Abstract: Opto-electric hybrid boards are disclosed including an electric circuit board; light-emitting and light-receiving elements which are mounted on a first surface of the electric circuit board; and an optical waveguide having a core for an optical path and formed in a stacked manner on a second surface of the electric circuit board. The core of the optical waveguide includes: end portions formed as light reflecting surfaces for reflecting light to allow the light to propagate between the core and the light-emitting and light-receiving elements; extensions extending from the end portion side of the core toward the light-emitting and light-receiving elements; and a main portion from which the extensions extend. The extensions of the core and the main portion of the core are different from each other in shape of cross-sections perpendicular to an axial direction thereof.
    Type: Grant
    Filed: November 20, 2017
    Date of Patent: November 24, 2020
    Assignee: NITTO DENKO CORPORATION
    Inventors: Naoto Konegawa, Yuichi Tsujita
  • Publication number: 20200363586
    Abstract: An optical waveguide includes a first core and a second core disposed adjacent to each other at spaced intervals and a dummy core positioned between the first core and the second core. The first core and the second core transmit light in a transmission direction perpendicular to an adjacent direction. The dummy core includes a facing surface facing the first core and an opposing surface positioned at the opposite side to the first core with respect to the facing surface, and the opposing surface has an inclined surface inclining so as to go away from the first core toward the downstream side in the transmission direction.
    Type: Application
    Filed: August 10, 2018
    Publication date: November 19, 2020
    Applicant: NITTO DENKO CORPORATION
    Inventors: Naoto KONEGAWA, Yuichi TSUJITA
  • Publication number: 20200363587
    Abstract: An optical waveguide includes a core extending in a transmission direction of light, a clad covering the core along the transmission direction, and a mixing layer containing a material for the core and a material for the clad on the interface between the core and the clad, and the mixing layer includes a plurality of regions each having a different thickness in the transmission direction.
    Type: Application
    Filed: August 22, 2018
    Publication date: November 19, 2020
    Applicant: NITTO DENKO CORPORATION
    Inventors: Naoto KONEGAWA, Yuichi TSUJITA
  • Publication number: 20200326477
    Abstract: An optical connector member is provided, which includes an optical waveguide retaining portion provided on one of opposite sides of an optical coupling portion and having a cavity for retaining an end portion of an optical waveguide, and an optical fiber retaining portion provided on the other side and having a through-hole for retaining an end portion of an optical fiber. A distal end face of the end portion of the optical waveguide retained in the cavity of the optical waveguide retaining portion and a distal end face of the end portion of the optical fiber retained in the through-hole of the optical fiber retaining portion are positioned in opposed relation to each other in the optical coupling portion with an optical axis of the optical waveguide in alignment with an optical axis of the optical fiber.
    Type: Application
    Filed: April 6, 2017
    Publication date: October 15, 2020
    Applicant: NITTO DENKO CORPORATION
    Inventors: Yuichi Tsujita, Naoto Konegawa
  • Publication number: 20200249400
    Abstract: An optical waveguide member connector kit includes an optical waveguide member including an optical waveguide and a connector accommodating the optical waveguide member. The connector includes a main body having a bottom wall, and a first wall and a second wall that extend from the bottom wall toward one side in a thickness direction of the bottom wall and face each other at spaced intervals therebetween, and a lid disposed between the first wall and the second wall and sandwiching the optical waveguide member with the bottom wall when the optical waveguide member is accommodated in the connector. A ratio (L1/L2) of a length L1 in a facing direction of the lid to a facing length L2 between the first wall and the second wall is 0.80 or more and 0.99 or less.
    Type: Application
    Filed: October 19, 2018
    Publication date: August 6, 2020
    Applicant: NITTO DENKO CORPORATION
    Inventors: Naoto KONEGAWA, Yuichi TSUJITA, Mineyoshi HASEGAWA
  • Publication number: 20200150359
    Abstract: An opto-electric hybrid board includes an optical waveguide and an electric circuit board. The opto-electric hybrid board has an electrode at one end portion in a first direction perpendicular to the thickness direction, and optically and electrically connects an optical element emitting light from a space between the one end portion and the other end portion. The electric circuit board includes a terminal portion electrically connected to the electrode and a support portion that supports the other end portion. The optical waveguide includes a light receiving portion for receiving light emitted from the optical element, which is positioned between the terminal portion and the support portion, when projected in the thickness direction, and a one-side surface in the thickness direction of the terminal portion is positioned at the other side in the thickness direction with respect to a one-side surface in the thickness direction of the support portion.
    Type: Application
    Filed: March 29, 2018
    Publication date: May 14, 2020
    Applicant: NITTO DENKO CORPORATION
    Inventors: Naoto KONEGAWA, Yuichi TSUJITA, Naoyuki TANAKA
  • Patent number: 10649155
    Abstract: A connector member for an optical waveguide includes a housing provided with a space portion for holding an end portion of an optical waveguide. In the housing, protruding portions serving as a positioner are provided on left-hand and right-hand side wall portions defining the space portion. Notches in the optical waveguide are fitted on the protruding portions, whereby a front end surface of the end portion of the optical waveguide is positioned at a location a predetermined distance inward from a front end surface of the housing. This configuration achieves optical coupling without bringing the end surface of the optical waveguide into direct abutment with an end surface of a target optical connector.
    Type: Grant
    Filed: April 6, 2017
    Date of Patent: May 12, 2020
    Assignee: NITTO DENKO CORPORATION
    Inventors: Naoto Konegawa, Yuichi Tsujita
  • Publication number: 20200057214
    Abstract: Opto-electric hybrid boards are disclosed including an electric circuit board; light-emitting and light-receiving elements which are mounted on a first surface of the electric circuit board; and an optical waveguide having a core for an optical path and formed in a stacked manner on a second surface of the electric circuit board. The core of the optical waveguide includes: end portions formed as light reflecting surfaces for reflecting light to allow the light to propagate between the core and the light-emitting and light-receiving elements; extensions extending from the end portion side of the core toward the light-emitting and light-receiving elements; and a main portion from which the extensions extend. The extensions of the core and the main portion of the core are different from each other in shape of cross-sections perpendicular to an axial direction thereof.
    Type: Application
    Filed: November 20, 2017
    Publication date: February 20, 2020
    Applicant: NITTO DENKO CORPORATION
    Inventors: Naoto Konegawa, Yuichi Tsujita
  • Patent number: 10288807
    Abstract: Provided are an optical waveguide capable of propagating light, and a position sensor and an optical circuit board including the same. The optical waveguide includes cores each partially formed in an S-shape. The S-shaped portion includes a first curved portion upstream as seen in the direction of light propagation, and a second curved portion downstream as seen in the direction of light propagation and curved in a direction opposite to the first curved portion. The first curved portion and the second curved portion are connected to each other via a straight portion having a length in the range of from 0 mm to 30 mm. One of the width of the exit of the first curved portion and the width of the entrance of the second curved portion is smaller than the width of a core portion upstream of the S-shaped portion.
    Type: Grant
    Filed: September 8, 2016
    Date of Patent: May 14, 2019
    Assignee: NITTO DENKO CORPORATION
    Inventors: Ryoma Yoshioka, Yusuke Shimizu, Naoki Shibata, Naoto Konegawa
  • Publication number: 20190113691
    Abstract: A connector member for an optical waveguide includes a housing provided with a space portion for holding an end portion of an optical waveguide. In the housing, protruding portions serving as a positioner are provided on left-hand and right-hand side wall portions defining the space portion. Notches in the optical waveguide are fitted on the protruding portions, whereby a front end surface of the end portion of the optical waveguide is positioned at a location a predetermined distance inward from a front end surface of the housing. This configuration achieves optical coupling without bringing the end surface of the optical waveguide into direct abutment with an end surface of a target optical connector.
    Type: Application
    Filed: April 6, 2017
    Publication date: April 18, 2019
    Applicant: NITTO DENKO CORPORATION
    Inventors: Naoto Konegawa, Yuichi Tsujita
  • Publication number: 20190072727
    Abstract: For the purpose of providing a connector member for an optical waveguide capable of suppressing warpage and deformation of an optical waveguide and making connection with low optical connection losses and an optical connector kit using the same, a connector member for an optical waveguide includes a housing having a placing portion for placing an optical waveguide thereon, and a pair of wall portions extending upwardly from the placing portion, with the optical waveguide therebetween, wherein the wall portions are provided with respective guide pin holes for insertion of positioning guide pins therethrough, and wherein a vertical distance B between a guide pin reference line obtained by connecting the centers of the guide pin holes provided in the respective wall portions and an optical waveguide placing surface of the placing portion satisfies the following formula: 0.018 mm?B?0.045 mm.
    Type: Application
    Filed: April 6, 2017
    Publication date: March 7, 2019
    Applicant: NITTO DENKO CORPORATION
    Inventors: Naoto Konegawa, Yuichi Tsujita
  • Publication number: 20180259709
    Abstract: Provided are an optical waveguide capable of propagating light, and a position sensor and an optical circuit board including the same. The optical waveguide includes cores each partially formed in an S-shape. The S-shaped portion includes a first curved portion upstream as seen in the direction of light propagation, and a second curved portion downstream as seen in the direction of light propagation and curved in a direction opposite to the first curved portion. The first curved portion and the second curved portion are connected to each other via a straight portion having a length in the range of greater than 0 mm to 30 mm. One of the width of the exit of the first curved portion and the width of the entrance of the second curved portion is smaller than the width of a core portion upstream of the S-shaped portion.
    Type: Application
    Filed: September 8, 2016
    Publication date: September 13, 2018
    Applicant: NITTO DENKO CORPORATION
    Inventors: Ryoma Yoshioka, Yusuke Shimizu, Naoki Shibata, Naoto Konegawa