Patents by Inventor Ryuta Takahashi
Ryuta Takahashi 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: 11955740Abstract: An electric wire connection structure is composed of insulated electric wires each including a core and an insulation coating covering the core. The cores of the insulated electric wires are connected to pads provided on a substrate. The insulated electric wires are arranged along a predetermined alignment direction and arranged parallel to each other. The insulation coating is removed at a part in a longitudinal direction of each of the insulated electric wires to expose the core. Exposed portions of the cores are connected to the pads, respectively. Some of the insulated electric wires are configured in such a manner that the core is exposed in an area where the insulation coatings of adjacent ones of the other insulated electric wires in the alignment direction are not removed.Type: GrantFiled: June 8, 2022Date of Patent: April 9, 2024Assignee: PROTERIAL, LTD.Inventor: Ryuta Takahashi
-
Publication number: 20240032994Abstract: An electric wire connection structure is provided with a plurality of insulated electric wires. Each insulated electric wire includes a core and an outer periphery of a core wire is covered by an insulation coating. The core wire is connected by an electrically conductive bonding material to each of a plurality of pads provided on a substrate at a tip in a longitudinal direction of each of the plurality of insulated electric wires. For each of the plurality of insulated electric wires, an end surface of the core wire and an end surface of the insulation coating are at the same position at the tip in the longitudinal direction, and the electrically conductive bonding material adheres to the end surface of the core wire and the pads.Type: ApplicationFiled: June 30, 2023Publication date: February 1, 2024Inventor: Ryuta TAKAHASHI
-
Publication number: 20240032993Abstract: An electric wire connection structure is provided with a plurality of insulated electric wires with each core wire being covered with an insulation coating. The core wires are connected to pads provided on a substrate. The plurality of insulated electric wires are arranged parallel to each other on the substrate along a predetermined alignment direction. The insulation coatings are removed in part in respective longitudinal directions to expose the core wires, and exposed portions of the core wires are connected to the pads, respectively. The exposed portions of the core wires are arranged along an inclined direction inclined with respect to a longitudinal direction of the plurality of insulated electric wires and the alignment direction.Type: ApplicationFiled: June 30, 2023Publication date: February 1, 2024Inventor: Ryuta TAKAHASHI
-
Publication number: 20220399659Abstract: An electric wire connection structure is composed of insulated electric wires each including a core and an insulation coating covering the core. The cores of the insulated electric wires are connected to pads provided on a substrate. The insulated electric wires are arranged along a predetermined alignment direction and arranged parallel to each other. The insulation coating is removed at a part in a longitudinal direction of each of the insulated electric wires to expose the core. Exposed portions of the cores are connected to the pads, respectively. Some of the insulated electric wires are configured in such a manner that the core is exposed in an area where the insulation coatings of adjacent ones of the other insulated electric wires in the alignment direction are not removed.Type: ApplicationFiled: June 8, 2022Publication date: December 15, 2022Inventor: Ryuta TAKAHASHI
-
Publication number: 20220319960Abstract: A cable connection structure is provided with an electronic component including electrodes on an electrode-forming surface, a cable including electric wires connected to the electrodes respectively, and a buried member which is composed of a cured resin and embedded with the electric wires. At least three electric wires are separating wires including separating regions being separated from each other in the normal direction as being distant from the electrode-forming surface. At least three electrodes are arranged side by side on a virtual circle. At least three separating wires are connected to the at least three electrodes. The separating regions of the at least three separating wires are provided to be located eccentric radially outwardly in the virtual circle as being distant from the electrode surface in the normal direction of the electrode-forming surface. An angle between the separating region and the normal direction of the electrode-forming surface is 10 degrees or more and 45 degrees or less.Type: ApplicationFiled: March 28, 2022Publication date: October 6, 2022Inventors: Ryuta TAKAHASHI, Hideki NONEN, Yuki YAMAMOTO
-
Patent number: 9632260Abstract: A transmitter and receiver integrated optical sub-assembly includes a housing including a side wall structure and a bottom wall, a transmitter-side optical receptacle and a receiver-side optical receptacle attached to the side wall structure, a second circuit board inserted into the housing, laser diodes and photo diodes arranged on the bottom wall, a transmitter-side optical system that is disposed on the bottom wall and combines optical signals from the laser diodes, a receiver-side optical system that is disposed on the bottom wall and splits an optical signal from the receiver-side optical receptacle, a driver integrated circuit, and an amplifying integrated circuit. In the transmitter and receiver integrated optical sub-assembly, electrodes formed at the other end portion of the second circuit board are connected to the driver integrated circuit and the amplifying integrated circuit.Type: GrantFiled: March 23, 2016Date of Patent: April 25, 2017Assignee: Hitachi Metals, Ltd.Inventors: Kenji Mizobuchi, Ryuta Takahashi, Kenichi Tamura
-
Publication number: 20160294477Abstract: A transmitter and receiver integrated optical sub-assembly includes a housing including a side wall structure and a bottom wall, a transmitter-side optical receptacle and a receiver-side optical receptacle attached to the side wall structure, a second circuit board inserted into the housing, laser diodes and photo diodes arranged on the bottom wall, a transmitter-side optical system that is disposed on the bottom wall and combines optical signals from the laser diodes, a receiver-side optical system that is disposed on the bottom wall and splits an optical signal from the receiver-side optical receptacle, a driver integrated circuit, and an amplifying integrated circuit. In the transmitter and receiver integrated optical sub-assembly, electrodes formed at the other end portion of the second circuit board are connected to the driver integrated circuit and the amplifying integrated circuit.Type: ApplicationFiled: March 23, 2016Publication date: October 6, 2016Inventors: Kenji MIZOBUCHI, Ryuta TAKAHASHI, Kenichi TAMURA
-
Patent number: 9391709Abstract: A multiplexing optical system in an optical transmitter module has first to third wavelength selective filters and a reflection mirror. The reflection mirror reflects a fourth optical signal to make it enter the first wavelength selective filter and reflects a third optical signal to make it enter the third wavelength selective filter. The third wavelength selective filter reflects a second optical signal to make it enter the second wavelength selective filter and transmits the third optical signal to make it enter the second wavelength selective filter. The first wavelength selective filter transmits a first optical signal to make it enter the second wavelength selective filter and reflects the fourth optical signal to make it enter the second wavelength selective filter. The second wavelength selective filter transmits the first and fourth optical signals and reflects the second and third optical signals to make them enter a lens.Type: GrantFiled: April 6, 2015Date of Patent: July 12, 2016Assignee: Hitachi Metals, Ltd.Inventors: Kenichi Tamura, Ryuta Takahashi
-
Publication number: 20150346433Abstract: A multiplexing optical system in an optical transmitter module has first to third wavelength selective filters and a reflection mirror. The reflection mirror reflects a fourth optical signal to make it enter the first wavelength selective filter and reflects a third optical signal to make it enter the third wavelength selective filter. The third wavelength selective filter reflects a second optical signal to make it enter the second wavelength selective filter and transmits the third optical signal to make it enter the second wavelength selective filter. The first wavelength selective filter transmits a first optical signal to make it enter the second wavelength selective filter and reflects the fourth optical signal to make it enter the second wavelength selective filter. The second wavelength selective filter transmits the first and fourth optical signals and reflects the second and third optical signals to make them enter a lens.Type: ApplicationFiled: April 6, 2015Publication date: December 3, 2015Inventors: Kenichi TAMURA, Ryuta TAKAHASHI
-
Publication number: 20150300614Abstract: An optical communication module includes: a plurality of semiconductor lasers which emit optical signals each having different wavelengths; a plurality of driver ICs which drive each of the plurality of semiconductor lasers; and a substrate on which both of the semiconductor lasers and the driver ICs are mounted. The semiconductor lasers are mounted on a first surface of the substrate and the driver ICs are mounted on a second surface of the substrate opposite to the first surface.Type: ApplicationFiled: July 25, 2014Publication date: October 22, 2015Inventors: Kenichi TAMURA, Ryuta TAKAHASHI, Yoshinori SUNAGA
-
Patent number: 9143261Abstract: An optical transceiver includes: a first WDM filter which reflects a first optical signal from a first light source and passes a second optical signal from a second light source; a first total reflection mirror which reflects the first optical signal to make it enter the first WDM filter; a second total reflection mirror which reflects the second optical signal; and a second WDM filter which reflects the second optical signal reflected by the second total reflection mirror to make it enter the first WDM filter. The first and second WDM filters are disposed on a light path, the first and second light sources are disposed back and forth along the light path on both sides thereof, the first and second total reflection mirrors are disposed outside the light path, and an incident angle of the first optical signal to the first WDM filter is smaller than 45 degrees.Type: GrantFiled: August 4, 2014Date of Patent: September 22, 2015Assignee: Hitachi Metals, Ltd.Inventors: Ryuta Takahashi, Hiroshi Ikuno
-
Patent number: 8985871Abstract: An optical module includes a housing, an optical adapter attached to an end portion of the housing, and an optical transmitter and receiver assembly mounted in the housing. The optical transmitter and receiver assembly includes a TOSA including a plurality of light-emitting elements, a ROSA including a light-receiving element, and a circuit board electrically connected to the TOSA and the ROSA. The TOSA further includes a TOSA base having an opposing side surface on which the plurality of light-emitting elements are oppositely arranged so as to form at least one pair. The circuit board includes a first flexible substrate mounting the TOSA and a first rigid substrate connected to the first flexible substrate. The first flexible substrate includes a TOSA base facing-portion facing the TOSA base, and a connection portion extending from both end portions of the TOSA base-facing portion and connected to the plurality of light-emitting elements.Type: GrantFiled: November 9, 2012Date of Patent: March 24, 2015Assignee: Hitachi Metals, LtdInventors: Kenji Mizobuchi, Ryuta Takahashi
-
Publication number: 20150037038Abstract: An optical transceiver includes: a first WDM filter which reflects a first optical signal from a first light source and passes a second optical signal from a second light source; a first total reflection mirror which reflects the first optical signal to make it enter the first WDM filter; a second total reflection mirror which reflects the second optical signal; and a second WDM filter which reflects the second optical signal reflected by the second total reflection mirror to make it enter the first WDM filter. The first and second WDM filters are disposed on a light path, the first and second light sources are disposed back and forth along the light path on both sides thereof, the first and second total reflection mirrors are disposed outside the light path, and an incident angle of the first optical signal to the first WDM filter is smaller than 45 degrees.Type: ApplicationFiled: August 4, 2014Publication date: February 5, 2015Inventors: Ryuta TAKAHASHI, Hiroshi IKUNO
-
Patent number: 8939656Abstract: An optical module includes a housing, an optical adapter attached to an end portion of the housing, and an optical transmitter assembly mounted in the housing. The optical transmitter assembly includes a TOSA including a plurality of light-emitting elements for outputting optical signals, and a circuit board electrically connected to the TOSA. The TOSA further includes a TOSA base having opposing side surfaces on which the plurality of light-emitting elements are oppositely arranged so as to form at least one pair. The TOSA base includes a light outputting surface having an optical component mounting portion formed thereon, and the optical component mounting portion mounts an optical multiplexer including a plurality of filters.Type: GrantFiled: November 9, 2012Date of Patent: January 27, 2015Assignee: Hitachi Metals, Ltd.Inventors: Ryuta Takahashi, Hiroshi Ikuno
-
Patent number: 8388367Abstract: A direct attach cable includes a cable connected to a paddle card, a housing formed to store the paddle card and the end portion of the cable, a latch engaged with an engaging portion of a plate spring provided on the cage when the housing is inserted in the cage, a de-latching lever in a lever shape for releasing the engagement between the latch and the plate spring, the de-latching lever pushing up the plate spring to disengage the engaging portion of the plate spring from the latch, a link formed in a frame shape so as to be fitted to the housing on the rear end side in the insertion direction, the link pushing up the plate spring via the de-latching lever by moving toward the rear end side, and a pull-tab for moving the link on the rear end side of the housing in the insertion direction.Type: GrantFiled: August 19, 2011Date of Patent: March 5, 2013Assignee: Hitachi Cable, Ltd.Inventors: Hideki Nonen, Takahiro Sugiyama, Ryuta Takahashi
-
Patent number: 8340522Abstract: There is provided a filter assembly for combining a wavelength multiplexed optical signal by multiplexing optical signals of different wavelength emitted from respective optical devices, and/or for dividing a wavelength multiplexed optical signal into optical signals of different wavelength and causing the optical signals of different wavelength to enter respective optical devices. This filter assembly comprises: a light transmitting member within which each optical signal propagates; plural optical filters disposed on an upper face of the light transmitting member at a predetermined spacing wherein each optical signal passes through the optical filters; upper reflective layers respectively provided between adjacent ones of the optical filters; and a lower reflective layer provided on a lower face of the light transmitting member, and wherein the wavelength multiplexed optical signal propagates along the same optical path within the light transmitting member.Type: GrantFiled: January 18, 2008Date of Patent: December 25, 2012Assignee: Hitachi Cable, Ltd.Inventors: Juhyun Yu, Ryuta Takahashi, Noribumi Kobayashi, Seiji Maruo, Hiroki Katayama, Yuuki Naganuma
-
Publication number: 20120064754Abstract: A direct attach cable includes a cable connected to a paddle card, a housing formed to store the paddle card and the end portion of the cable, a latch engaged with an engaging portion of a plate spring provided on the cage when the housing is inserted in the cage, a de-latching lever in a lever shape for releasing the engagement between the latch and the plate spring, the de-latching lever pushing up the plate spring to disengage the engaging portion of the plate spring from the latch, a link formed in a frame shape so as to be fitted to the housing on the rear end side in the insertion direction, the link pushing up the plate spring via the de-latching lever by moving toward the rear end side, and a pull-tab for moving the link on the rear end side of the housing in the insertion direction.Type: ApplicationFiled: August 19, 2011Publication date: March 15, 2012Applicant: Hitachi Cable, Ltd.Inventors: Hideki Nonen, Takahiro Sugiyama, Ryuta Takahashi
-
Patent number: 7704092Abstract: An electronic module is provided with a module body for being removably inserted into a cage; a latch member provided in the module body for engaging an engagement hole formed in the cage during insertion into the cage; a rotatable nail for engaging/disengaging the engagement hole of the cage and being rotatably provided in the module body so as to appear above and sink below a module body surface; and a control member provided in the module body for rotating the rotatable nail.Type: GrantFiled: April 13, 2009Date of Patent: April 27, 2010Assignee: Hitachi Cable, Ltd.Inventors: Juhyun Yu, Ryuta Takahashi, Yoshinori Sunaga
-
Patent number: 7623788Abstract: An optical transmitter for coupling and wavelength-multiplexing optical signals with a different wavelength has 3 or more light sources for emitting parallel optical signals with a different wavelength, and 2 kinds of optical components with a different optical signal reflectance arranged in an optical path of each light source for coupling into one the optical signals emitted from the light sources respectively. The reflectance or transmittance of each of the 2 kinds of optical components is set so that each optical signal has the same optical signal power when reflected off or transmitted through the optical components for being coupled together and output from the optical transmitter.Type: GrantFiled: October 28, 2005Date of Patent: November 24, 2009Assignee: Hitachi Cable, Ltd.Inventors: Ryuta Takahashi, Koji Kumagai, Akihiro Hiruta
-
Publication number: 20090203250Abstract: An electronic module is provided with a module body for being removably inserted into a cage; a latch member provided in the module body for engaging an engagement hole formed in the cage during insertion into the cage; a rotatable nail for engaging/disengaging the engagement hole of the cage and being rotatably provided in the module body so as to appear above and sink below a module body surface; and a control member provided in the module body for rotating the rotatable nail.Type: ApplicationFiled: April 13, 2009Publication date: August 13, 2009Inventors: Juhyun YU, Ryuta Takahashi, Yoshinori Sunaga