Patents by Inventor Kenji Yamakawa

Kenji Yamakawa 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: 20190343374
    Abstract: Provided is an endoscope that can suppress breakage of an optical fiber and has excellent assemblibility and handlability. An endoscope includes a light guide that guides illumination light created by a light source device from the light source device via an operating part of the endoscope to a distal end part of an insertion part of the endoscope through an interior of an endoscope. The light guide includes a first optical fiber bundle; a first protective tube that covers the first optical fiber bundle from the distal end part to the operating part; and a second protective tube that is connected to a proximal end part of the first protective tube and covers the first optical fiber bundle. The first protective tube is made of a non-porous (solid) fluororesin. The second protective tube has a bending stiffness smaller than the first protective tube.
    Type: Application
    Filed: May 7, 2019
    Publication date: November 14, 2019
    Applicant: FUJIFILM Corporation
    Inventors: Hiroshi SHIBUYA, Kenji YAMAKAWA
  • Patent number: 10010909
    Abstract: There are provided a piezoelectric element capable of implementing an acoustic generator having excellent characteristics and a simple structure, and an acoustic generator, an acoustic generation device, and an electronic apparatus using the same. A piezoelectric element includes a piezoelectric layer; a first conductor; a second conductor; a third conductor; a fourth conductor; a fifth conductor; and a sixth conductor, and includes a first portion, a second portion, and a third portion. The first portion is a portion where the first conductor and the second conductor face each other, and the second portion is a portion where the third conductor and the fourth conductor face each other. The third portion is a portion where the fifth conductor and the sixth conductor do not face each other, the third portion being located between the first portion and the second portion.
    Type: Grant
    Filed: July 21, 2015
    Date of Patent: July 3, 2018
    Assignee: KYOCERA CORPORATION
    Inventors: Tooru Takahashi, Kentarou Miyazato, Kenji Yamakawa
  • Patent number: 9883289
    Abstract: An acoustic generator according to an embodiment includes at least a plurality of piezoelectric elements (exciters) and a vibrating portion. The piezoelectric elements vibrate upon reception of input of an electric signal. The piezoelectric elements are attached to the vibrating portion. The piezoelectric elements are attached to the vibrating portion asymmetrically with respect to all the symmetry axes of a figure drawn by a contour of the vibrating portion when seen from the above.
    Type: Grant
    Filed: July 30, 2013
    Date of Patent: January 30, 2018
    Assignee: Kyocera Corporation
    Inventors: Noriyuki Kushima, Shuichi Fukuoka, Takeshi Hirayama, Kenji Yamakawa, Hiroshi Ninomiya
  • Patent number: 9848268
    Abstract: There are provided an acoustic generator capable of generating a high-quality sound having little distortion, and an acoustic generation device and an electronic apparatus using the same. An acoustic generator has a vibration body, a first exciter, a second exciter, a first damping material and a second damping material. The vibration body has two surfaces which are positioned with a gap therebetween in a first direction. The first exciter and the second exciter are disposed on the vibration body. The first damping material is disposed on the vibration body and has a first portion which overlaps the first exciter when viewed in the first direction. The second damping material is disposed on the vibration body and has a second portion which overlaps the second exciter when viewed in the first direction.
    Type: Grant
    Filed: January 13, 2015
    Date of Patent: December 19, 2017
    Assignee: KYOCERA CORPORATION
    Inventors: Noriyuki Kushima, Kentarou Miyazato, Tooru Takahashi, Shuichi Fukuoka, Kenji Yamakawa, Masato Murahashi, Hiroshi Ninomiya
  • Patent number: 9791659
    Abstract: The present invention provides an imaging module capable of performing positioning of an imaging element unit, and a lens unit at a low cost and with high precision and an electronic device including the imaging module. An imaging module 100 includes a lens unit 10 including VCMs 16A, 16C, and 16E which move a lens group 12 in an x direction, a y direction, and a z direction, respectively, terminals 14A and 14B which are connected to the VCM 16A, terminals 14C and 14D which are connected to the VCM 16C, and terminals 14E and 14F which are connected to the VCM 16E, and an imaging element unit 20 including terminals 24A to 24F which are connected to the terminals 14A to 14F. Exposed areas of the terminals 14A and 14B are larger than exposed areas of the terminals 14C to 14F.
    Type: Grant
    Filed: January 27, 2016
    Date of Patent: October 17, 2017
    Assignee: FUJIFILM Corporation
    Inventors: Kenji Yamakawa, Yoshiyuki Takase, Masaru Inamura, Tatsuya Fujinami, Manabu Tobise
  • Publication number: 20170203333
    Abstract: There are provided a piezoelectric element capable of implementing an acoustic generator having excellent characteristics and a simple structure, and an acoustic generator, an acoustic generation device, and an electronic apparatus using the same. A piezoelectric element includes a piezoelectric layer; a first conductor; a second conductor; a third conductor; a fourth conductor; a fifth conductor; and a sixth conductor, and includes a first portion, a second portion, and a third portion. The first portion is a portion where the first conductor and the second conductor face each other, and the second portion is a portion where the third conductor and the fourth conductor face each other. The third portion is a portion where the fifth conductor and the sixth conductor do not face each other, the third portion being located between the first portion and the second portion.
    Type: Application
    Filed: July 21, 2015
    Publication date: July 20, 2017
    Applicant: KYOCERA Corporation
    Inventors: Tooru TAKAHASHI, Kentarou MIYAZATO, Kenji YAMAKAWA
  • Patent number: 9712732
    Abstract: The present invention provides an imaging module, an electric device provided therewith, and an imaging-module manufacturing method capable of simply and reliably performing probing and fixing a lens unit and an imaging element unit to each other with high accuracy even when the miniaturized lens unit is used. A the lens unit (11) includes a focus driving unit, a housing (23), a first connection portion (37A), a first wiring portion by which the focus driving unit and the first connection portion are electrically connected to each other, and a second wiring portion which is electrically connected to the focus driving unit to which the first wiring portion is connected. The second wiring portion extends from the inside of the housing to the outside thereof, and a wire of the second wiring portion extends to an end surface on an end (39) of the extended second wiring portion.
    Type: Grant
    Filed: January 19, 2016
    Date of Patent: July 18, 2017
    Assignee: FUJIFILM Corporation
    Inventors: Yukihiro Kaneko, Kenji Yamakawa, Yoshiyuki Takase, Tatsuya Fujinami, Manabu Tobise
  • Patent number: 9674443
    Abstract: An imaging module, an electronic device, and an imaging-module manufacturing method capable of relatively easily adjusting a relative position between an imaging element unit and a lens unit with high accuracy are provided. An imaging module 1 includes an imaging element unit 3, a lens unit 2 which includes a lens group 10, a first image-blur correction driving unit 30x, a second image-blur correction driving unit 30y, a focus driving unit 30z, and a connection portion 41 which is electrically connected to a circuit of the imaging element unit by a conductive joining material, and a flexible wiring portion 12 which includes a wiring group which connects the circuit of the imaging element unit to at least one driving unit among the first image-blur correction driving unit, the second image-blur correction driving unit, and the focus driving unit, and extends between the imaging element unit and the lens unit.
    Type: Grant
    Filed: January 27, 2016
    Date of Patent: June 6, 2017
    Assignee: FUJIFILM Corporation
    Inventors: Yukihiro Kaneko, Kenji Yamakawa, Yoshiyuki Takase, Tatsuya Fujinami, Manabu Tobise
  • Patent number: 9609196
    Abstract: An imaging module 100 includes a lens unit 10 and an imaging element unit 20. The lens unit 10 includes a VCM 16A which moves a lens group 12 in a z direction, terminals 14A and 14B which are electrically connected to the VCM 16A, a VCM 16C and a VCM 16E which move the lens group 12 in an x direction and a y direction, and terminals 14C to 14F which are electrically connected to the VCM 16C and the VCM 16E. The imaging element unit 20 includes terminals 24A to 24F which are electrically connected to the terminals 14A to 14F. Exposed areas of the terminals 14A and 14B are larger than exposed areas of the terminals 14C to 14F.
    Type: Grant
    Filed: January 15, 2016
    Date of Patent: March 28, 2017
    Assignee: FUJIFILM Corporation
    Inventors: Kenji Yamakawa, Yukihiro Kaneko, Manabu Tobise, Tatsuya Fujinami
  • Patent number: 9590162
    Abstract: A piezoelectric vibration component and a portable terminal each include a piezoelectric vibration element 14 and a power supply line 51. The piezoelectric vibration element 14 includes at least: a layered structure 20 in which a plurality of internal electrodes and piezoelectric layers are layered in a first direction; and surface electrodes 33 and 31 electrically connected to the internal electrodes. The piezoelectric vibration element 14 bends and vibrates, and its amplitude changes in a second direction perpendicular to the first direction. The power supply line 51 includes at least: a conductive path 53 including a connection part 56 bonded to a surface electrode 33; and a conductive path 52 including a connection part 57 bonded to a surface electrode 31. The connection part 56 has a plurality of partial electrodes 56a and 56b that extend in a third direction perpendicular to both the first direction and the second direction.
    Type: Grant
    Filed: January 31, 2013
    Date of Patent: March 7, 2017
    Assignee: KYOCERA CORPORATION
    Inventors: Yasuhito Fujii, Satoru Iwasaki, Harumi Hayashi, Kenji Yamakawa
  • Patent number: 9583692
    Abstract: A piezoelectric vibration device capable of allowing a low profile and generating strong vibration, and a portable terminal using the same are provided. Disclosed are a piezoelectric vibration device at least including a support body (11); a vibration member (12) mounted to the support body (11) so as to vibrate; a vibration element (14) capable of being subjected to bending vibration; and a deformable first connecting member (13) interposed between a first surface that is a bending surface of the vibration element (14) and one main surface of the vibration member (12), and a portable terminal using the same. A piezoelectric vibration device capable of allowing a low profile and generating strong vibration, and a portable terminal can be obtained.
    Type: Grant
    Filed: July 31, 2012
    Date of Patent: February 28, 2017
    Assignee: KYOCERA CORPORATION
    Inventors: Harumi Hayashi, Kenji Yamakawa, Satoru Iwasaki
  • Publication number: 20160337759
    Abstract: There are provided an acoustic generator capable of generating a high-quality sound having little distortion, and an acoustic generation device and an electronic apparatus using the same. An acoustic generator has a vibration body, a first exciter, a second exciter, a first damping material and a second damping material. The vibration body has two surfaces which are positioned with a gap therebetween in a first direction. The first exciter and the second exciter are disposed on the vibration body. The first damping material is disposed on the vibration body and has a first portion which overlaps the first exciter when viewed in the first direction. The second damping material is disposed on the vibration body and has a second portion which overlaps the second exciter when viewed in the first direction.
    Type: Application
    Filed: January 13, 2015
    Publication date: November 17, 2016
    Applicant: KYOCERA Corporation
    Inventors: Noriyuki KUSHIMA, Kentarou MIYAZATO, Tooru TAKAHASHI, Shuichi FUKUOKA, Kenji YAMAKAWA, Masato MURAHASHI, Hiroshi NINOMIYA
  • Patent number: 9392372
    Abstract: An acoustic generator according to an aspect of an embodiment includes a piezoelectric element (exciter), a vibrating body. The piezoelectric element receives an input of an electrical signal and is caused to vibrate. The piezoelectric element is mounted on the vibrating body, and the vibrating body is caused to vibrate by the vibration of the piezoelectric element. The acoustic generator includes at least one pair of two adjacent portions with different stiffnesses in a plan view, and has at least one damper provided contacting with both of the two adjacent portions.
    Type: Grant
    Filed: May 31, 2013
    Date of Patent: July 12, 2016
    Assignee: Kyocera Corporation
    Inventors: Shuichi Fukuoka, Noriyuki Kushima, Takeshi Hirayama, Tooru Takahashi, Yutaka Makino, Atsushi Ishihara, Hiroshi Ninomiya, Kenji Yamakawa, Kentarou Miyazato
  • Publication number: 20160142635
    Abstract: An imaging module, an electronic device, and an imaging-module manufacturing method capable of relatively easily adjusting a relative position between an imaging element unit and a lens unit with high accuracy are provided. An imaging module 1 includes an imaging element unit 3, a lens unit 2 which includes a lens group 10, a first image-blur correction driving unit 30x, a second image-blur correction driving unit 30y, a focus driving unit 30z, and a connection portion 41 which is electrically connected to a circuit of the imaging element unit by a conductive joining material, and a flexible wiring portion 12 which includes a wiring group which connects the circuit of the imaging element unit to at least one driving unit among the first image-blur correction driving unit, the second image-blur correction driving unit, and the focus driving unit, and extends between the imaging element unit and the lens unit.
    Type: Application
    Filed: January 27, 2016
    Publication date: May 19, 2016
    Applicant: FUJIFILM Corporation
    Inventors: Yukihiro KANEKO, Kenji YAMAKAWA, Yoshiyuki TAKASE, Tatsuya FUJINAMI, Manabu TOBISE
  • Publication number: 20160139357
    Abstract: The present invention provides an imaging module capable of performing positioning of an imaging element unit, and a lens unit at a low cost and with high precision and an electronic device including the imaging module. An imaging module 100 includes a lens unit 10 including VCMs 16A, 16C, and 16E which move a lens group 12 in an x direction, a y direction, and a z direction, respectively, terminals 14A and 14B which are connected to the VCM 16A, terminals 14C and 14D which are connected to the VCM 16C, and terminals 14E and 14F which are connected to the VCM 16E, and an imaging element unit 20 including terminals 24A to 24F which are connected to the terminals 14A to 14F. Exposed areas of the terminals 14A and 14B are larger than exposed areas of the terminals 14C to 14F.
    Type: Application
    Filed: January 27, 2016
    Publication date: May 19, 2016
    Applicant: FUJIFILM Corporation
    Inventors: Kenji YAMAKAWA, Yoshiyuki TAKASE, Masaru INAMURA, Tatsuya FUJINAMI, Manabu TOBISE
  • Publication number: 20160134796
    Abstract: The present invention provides an imaging module, an electric device provided therewith, and an imaging-module manufacturing method capable of simply and reliably performing probing and fixing a lens unit and an imaging element unit to each other with high accuracy even when the miniaturized lens unit is used. A the lens unit (11) includes a focus driving unit, a housing (23), a first connection portion (37A), a first wiring portion by which the focus driving unit and the first connection portion are electrically connected to each other, and a second wiring portion which is electrically connected to the focus driving unit to which the first wiring portion is connected. The second wiring portion extends from the inside of the housing to the outside thereof, and a wire of the second wiring portion extends to an end surface on an end (39) of the extended second wiring portion.
    Type: Application
    Filed: January 19, 2016
    Publication date: May 12, 2016
    Applicant: FUJIFILM Corporation
    Inventors: Yukihiro KANEKO, Kenji YAMAKAWA, Yoshiyuki TAKASE, Tatsuya FUJINAMI, Manabu TOBISE
  • Publication number: 20160134795
    Abstract: An imaging module 100 includes a lens unit 10 and an imaging element unit 20. The lens unit 10 includes a VCM 16A which moves a lens group 12 in a z direction, terminals 14A and 14B which are electrically connected to the VCM 16A, a VCM 16C and a VCM 16E which move the lens group 12 in an x direction and a y direction, and terminals 14C to 14F which are electrically connected to the VCM 16C and the VCM 16E. The imaging element unit 20 includes terminals 24A to 24F which are electrically connected to the terminals 14A to 14F. Exposed areas of the terminals 14A and 14B are larger than exposed areas of the terminals 14C to 14F.
    Type: Application
    Filed: January 15, 2016
    Publication date: May 12, 2016
    Applicant: FUJIFILM Corporation
    Inventors: Kenji YAMAKAWA, Yukihiro KANEKO, Manabu TOBISE, Tatsuya FUJINAMI
  • Patent number: 9318688
    Abstract: A piezoelectric vibration element capable of reducing occurrence of unnecessary vibration, and a piezoelectric vibration device and a portable terminal using the same are disclosed. The piezoelectric vibration element includes a plurality of electrode layers and a plurality of piezoelectric layers being stacked along a first direction, the piezoelectric vibration element having two surfaces that face each other to be at intervals in the first direction, and vibrating in bending mode in the first direction with an amplitude varying along a second direction perpendicular to the first direction according to input of an electric signal, one of the two surfaces having such a shape that a central portion thereof in a third direction perpendicular to the first direction and the second direction protrudes as compared with opposite end portions thereof in the third direction.
    Type: Grant
    Filed: July 26, 2012
    Date of Patent: April 19, 2016
    Assignee: Kyocera Corporation
    Inventors: Yasuhito Fujii, Satoru Iwasaki, Harumi Hayashi, Kenji Yamakawa
  • Patent number: 9257631
    Abstract: A piezoelectric vibration element capable of reducing occurrence of unnecessary vibration, and a piezoelectric vibration device and a portable terminal using the same are disclosed. The piezoelectric vibration element includes a plurality of electrode layers and a plurality of piezoelectric layers being stacked along a first direction, the piezoelectric vibration element having two surfaces that face each other to be at intervals in the first direction, and vibrating in bending mode in the first direction with an amplitude varying along a second direction perpendicular to the first direction according to input of an electric signal, one of the two surfaces having such a shape that a central portion thereof in a third direction perpendicular to the first direction and the second direction protrudes as compared with opposite end portions thereof in the third direction.
    Type: Grant
    Filed: May 2, 2014
    Date of Patent: February 9, 2016
    Assignee: Kyocera Corporation
    Inventors: Yasuhito Fujii, Satoru Iwasaki, Harumi Hayashi, Kenji Yamakawa
  • Publication number: 20150326976
    Abstract: An acoustic generator according to an embodiment includes at least a plurality of piezoelectric elements (exciters) and a vibrating potion. The piezoelectric elements vibrate upon reception of input of an electric signal. The piezoelectric elements are attached to the vibrating potion. The piezoelectric elements are attached to the vibrating potion asymmetrically with respect to all the symmetry axes of a figure drawn by a contour of the vibrating potion when seen from the above.
    Type: Application
    Filed: July 30, 2013
    Publication date: November 12, 2015
    Applicant: KYOCERA CORPORATION
    Inventors: Noriyuki KUSHIMA, Shuichi FUKUOKA, Takeshi HIRAYAMA, Kenji YAMAKAWA, Hiroshi NINOMIYA