Patents by Inventor Masaki IWAMA

Masaki IWAMA 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).

  • Patent number: 11287574
    Abstract: An irradiation spot of the laser beam having a large power density can be formed by a condensing apparatus which combines a plurality of laser lights without using a power combiner. The condensing apparatus comprises an optical fiber bundle formed of a plurality of optical fibers. One end of the optical fiber bundle forms an incident side bundle end, while the other end forms an emission side bundle end. The optical fiber bundle includes, at the emission side bundle end, an optical deflection unit that deflects at least two light beams emitted from respective light emission ends of at least two optical fibers toward different directions, respectively, such that the at least two light beams overlap each other on at least one cross section at rear on an optical path of the emission side bundle end and are then scattered.
    Type: Grant
    Filed: September 11, 2020
    Date of Patent: March 29, 2022
    Assignee: FURUKAWA ELECTRIC CO., LTD.
    Inventors: Masaki Iwama, Shunichi Matsushita
  • Patent number: 11198198
    Abstract: A method for manufacturing a substrate with a transparent conductive film, includes emitting subnano-to-nanosecond laser light to a transparent conductive film formed on a surface of a substrate to form a laser-induced periodic surface structure having a corrugated shape in at least a part of the transparent conductive film.
    Type: Grant
    Filed: February 28, 2020
    Date of Patent: December 14, 2021
    Assignee: FURUKAWA ELECTRIC CO., LTD.
    Inventor: Masaki Iwama
  • Publication number: 20210186612
    Abstract: To provide an optical probe capable of changing a traveling direction of an output beam to a sideward direction. The optical probe includes an optical fiber that outputs a beam from a distal end thereof, and a traveling direction changing unit that changes a traveling direction of the output beam to a sideward direction with respect to the optical fiber. The optical probe includes a holder member that is mounted on a distal end side of the optical fiber and holds the optical fiber, and the traveling direction changing unit may be a reflector that is arranged on the holder member and that reflects output beam.
    Type: Application
    Filed: March 9, 2021
    Publication date: June 24, 2021
    Applicant: FURUKAWA ELECTRIC CO., LTD.
    Inventors: Kengo WATANABE, Shunichi MATSUSHITA, Yoshiki NOMURA, Shigehiro TAKASAKA, Masaki IWAMA
  • Patent number: 11036024
    Abstract: A method for manufacturing an intermittent bonding type optical fiber ribbon which is capable of forming non-connection portions and intermittent connection portions between adjacent coated optical fibers formed into an optical fiber ribbon by performing a laser processing for the ribbon through irradiation with a pulse laser light, thereby making it possible to rapidly form the intermittent connection portions and the non-connection portions while maintaining high linear velocity of the coated optical fiber. The non-connection portions and the intermittent connection portions are formed in the obtained intermittent bonding type optical fiber ribbon through the irradiation with the pulse laser light, so the intermittent bonding type optical fiber ribbon becomes the intermittent bonding type optical fiber ribbon, which is capable of securing operability during collective connection and surely being subjected to an intermediate branching without damaging cable characteristics during high density mounting.
    Type: Grant
    Filed: May 31, 2019
    Date of Patent: June 15, 2021
    Assignee: FURUKAWA ELECTRIC CO., LTD.
    Inventors: Hiroki Tanaka, Kenji Yokomizo, Tomohiro Ishimura, Yutaka Hoshino, Masaki Iwama, Eisuke Otani, Shunichi Matsushita, Yoshihiro Arashitani, Takeshi Yagi
  • Patent number: 11031746
    Abstract: A semiconductor laser module includes a semiconductor laser device that outputs laser light; an optical fiber that includes a core portion and a cladding portion formed at an outer periphery of the core portion and that receives the laser light from one end and guides the laser light to the outside of the semiconductor laser module; an optical part disposed at an outer periphery of the optical fiber, having optical transmittance at a wavelength of the laser light, and that fixes the optical fiber; a first fixative that fixes the optical part and the optical fiber; and a housing that accommodates the semiconductor laser device and the one end of the optical fiber that receives the laser light, wherein an optical reflection reducing region treated to absorb the laser light and having a rough surface is formed around the optical part.
    Type: Grant
    Filed: August 13, 2019
    Date of Patent: June 8, 2021
    Assignee: FURUKAWA ELECTRIC CO., LTD.
    Inventors: Yuta Ishige, Maiko Ariga, Masaki Iwama
  • Publication number: 20210085395
    Abstract: For the purpose of efficiently converting a beam profile of laser light with a simple configuration, provided is a beam profile converter including: a first optical fiber that outputs guided light from a first end surface; and a second optical fiber being a multi-mode optical fiber to which the light is input to a second end surface and configured to guide the light, in which a core diameter of the second optical fiber is larger than a core diameter of the first optical fiber at the first end surface, and the light output from the first end surface is input to a core portion of the second end surface at a position separated from an optical axis of the second optical fiber in a direction inclined with respect to the second end surface.
    Type: Application
    Filed: November 18, 2020
    Publication date: March 25, 2021
    Applicant: FURUKAWA ELECTRIC CO., LTD.
    Inventor: Masaki IWAMA
  • Patent number: 10886693
    Abstract: An optical module includes a housing and an optical element that is disposed in the housing and emits light in the housing, in which a partial area of a surface inside the housing serves as a reduced optical reflection area processed so as to absorb the light and have a rough surface.
    Type: Grant
    Filed: August 12, 2019
    Date of Patent: January 5, 2021
    Assignee: FURUKAWA ELECTRIC CO., LTD.
    Inventors: Maiko Ariga, Yuta Ishige, Masaki Iwama
  • Publication number: 20200408992
    Abstract: An irradiation spot of the laser beam having a large power density can be formed by a condensing apparatus which combines a plurality of laser lights without using a power combiner. The condensing apparatus comprises an optical fiber bundle formed of a plurality of optical fibers. One end of the optical fiber bundle forms an incident side bundle end, while the other end forms an emission side bundle end. The optical fiber bundle includes, at the emission side bundle end, an optical deflection unit that deflects at least two light beams emitted from respective light emission ends of at least two optical fibers toward different directions, respectively, such that the at least two light beams overlap each other on at least one cross section at rear on an optical path of the emission side bundle end and are then scattered.
    Type: Application
    Filed: September 11, 2020
    Publication date: December 31, 2020
    Applicant: FURUKAWA ELECTRIC CO., LTD.
    Inventors: Masaki IWAMA, Shunichi MATSUSHITA
  • Publication number: 20200289809
    Abstract: A functional member includes: a plurality of microneedles on a surface. Further, the microneedles adjacent to each other are spaced apart by a pitch ranging from 1 to 500 ?m, and the microneedles have a diameter ranging from 0.25 to 250 ?m and have a height ranging from 5 to 200 ?m.
    Type: Application
    Filed: June 2, 2020
    Publication date: September 17, 2020
    Applicant: FURUKAWA ELECTRIC CO., LTD.
    Inventor: Masaki IWAMA
  • Publication number: 20200198063
    Abstract: A method for manufacturing a substrate with a transparent conductive film, includes emitting subnano-to-nanosecond laser light to a transparent conductive film formed on a surface of a substrate to form a laser-induced periodic surface structure having a corrugated shape in at least a part of the transparent conductive film.
    Type: Application
    Filed: February 28, 2020
    Publication date: June 25, 2020
    Applicant: FURUKAWA ELECTRIC CO., LTD.
    Inventor: Masaki IWAMA
  • Publication number: 20190363511
    Abstract: A semiconductor laser module includes a semiconductor laser device that outputs laser light; an optical fiber that includes a core portion and a cladding portion formed at an outer periphery of the core portion and that receives the laser light from one end and guides the laser light to the outside of the semiconductor laser module; an optical part disposed at an outer periphery of the optical fiber, having optical transmittance at a wavelength of the laser light, and that fixes the optical fiber; a first fixative that fixes the optical part and the optical fiber; and a housing that accommodates the semiconductor laser device and the one end of the optical fiber that receives the laser light, wherein an optical reflection reducing region treated to absorb the laser light and having a rough surface is formed around the optical part.
    Type: Application
    Filed: August 13, 2019
    Publication date: November 28, 2019
    Applicant: FURUKAWA ELECTRIC CO., LTD.
    Inventors: Yuta Ishige, Maiko Ariga, Masaki Iwama
  • Publication number: 20190363510
    Abstract: An optical module includes a housing and an optical element that is disposed in the housing and emits light in the housing, in which a partial area of a surface inside the housing serves as a reduced optical reflection area processed so as to absorb the light and have a rough surface.
    Type: Application
    Filed: August 12, 2019
    Publication date: November 28, 2019
    Applicant: FURUKAWA ELECTRIC CO., LTD.
    Inventors: Maiko ARIGA, Yuta ISHIGE, Masaki IWAMA
  • Publication number: 20190285823
    Abstract: A method for manufacturing an intermittent bonding type optical fiber ribbon which is capable of forming non-connection portions and intermittent connection portions between adjacent coated optical fibers formed into an optical fiber ribbon by performing a laser processing for the ribbon through irradiation with a pulse laser light, thereby making it possible to rapidly form the intermittent connection portions and the non-connection portions while maintaining high linear velocity of the coated optical fiber. The non-connection portions and the intermittent connection portions are formed in the obtained intermittent bonding type optical fiber ribbon through the irradiation with the pulse laser light, so the intermittent bonding type optical fiber ribbon becomes the intermittent bonding type optical fiber ribbon, which is capable of securing operability during collective connection and surely being subjected to an intermediate branching without damaging cable characteristics during high density mounting.
    Type: Application
    Filed: May 31, 2019
    Publication date: September 19, 2019
    Applicant: Furukawa Electric Co., Ltd.
    Inventors: Hiroki TANAKA, Kenji YOKOMIZO, Tomohiro ISHIMURA, Yutaka HOSHINO, Masaki IWAMA, Eisuke OTANI, Shunichi MATSUSHITA, Yoshihiro ARASHITANI, Takeshi YAGI
  • Patent number: 10126556
    Abstract: A light operation device includes: an light input and output port; an light-operating element reflecting a light input from any one of the ports of the light input and output port and outputting the reflected light to any one of the ports of the light input and output port; a condensing lens system disposed between the light input and output port and the light-operating element and optically-coupling the light input and output port with the light-operating element; an anamorphic optical system disposed between the light input and output port and the condensing lens system and expanding a beam diameter of the light input from a side of the light input and output port in a beam-diameter-expanding direction. In the condensing lens system, a first focal distance in the beam-diameter-expanding direction and a second focal distance in a direction perpendicular to the beam-diameter-expanding direction differ from each other.
    Type: Grant
    Filed: July 17, 2015
    Date of Patent: November 13, 2018
    Assignee: FURUKAWA ELECTRIC CO., LTD.
    Inventors: Atsushi Oguri, Nobuyuki Kagi, Masaki Iwama
  • Publication number: 20170023741
    Abstract: A wavelength-selecting optical switch device includes: an optical input/output port including a plurality of ports; an optical operation element having polarization dependence characteristics and configured to output light input from any port of the optical input/output port to any port of the optical input/output port; a condenser lens system configured to optically couple the optical input/output port with the optical operation element; an optical dispersion element configured to disperse input light in a light dispersion direction; a polarization operation element configured to output two lights having a polarization state orthogonal to each other in a direction forming an angle to each other on a plane parallel to the optical switch direction; and a polarization rotation element configured to cause polarization directions of two lights output from the polarization operation element and having a polarization state orthogonal to each other to be identical to each other.
    Type: Application
    Filed: October 5, 2016
    Publication date: January 26, 2017
    Applicant: FURUKAWA ELECTRIC CO., LTD.
    Inventor: Masaki IWAMA
  • Publication number: 20150355469
    Abstract: A light operation device includes: an light input and output port; an light-operating element reflecting a light input from any one of the ports of the light input and output port and outputting the reflected light to any one of the ports of the light input and output port; a condensing lens system disposed between the light input and output port and the light-operating element and optically-coupling the light input and output port with the light-operating element; an anamorphic optical system disposed between the light input and output port and the condensing lens system and expanding a beam diameter of the light input from a side of the light input and output port in a beam-diameter-expanding direction. In the condensing lens system, a first focal distance in the beam-diameter-expanding direction and a second focal distance in a direction perpendicular to the beam-diameter-expanding direction differ from each other.
    Type: Application
    Filed: July 17, 2015
    Publication date: December 10, 2015
    Applicant: FURUKAWA ELECTRIC CO., LTD.
    Inventors: Atsushi Oguri, Nobuyuki Kagi, Masaki Iwama
  • Publication number: 20140072302
    Abstract: An optical switch includes light input/output ports, each having a port group of inputting/outputting a light, an optical path manipulation unit having optical path switching units of switching an optical path of a light from an input port in the port group to an optical path toward an output port in the same port group according to each of the light input/output ports, and a condenser lens condensing light from the light input/output ports on the optical path switching units corresponding to the port groups and optically-couples the light input/output ports with the optical path manipulation unit. The input/output optical paths of the light input/output ports with respect to the condenser lens are parallel to each other between the ports in the same port group and are unparallel to each other between the ports in the different port groups as seen from a direction perpendicular to a port arrangement direction.
    Type: Application
    Filed: September 4, 2013
    Publication date: March 13, 2014
    Applicant: FURUKAWA ELECTRIC CO., LTD.
    Inventors: Masaki IWAMA, Nobuyuki Kagi, Atsushi Oguri