Patents by Inventor Kiyokazu Tateno
Kiyokazu Tateno 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).
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Patent number: 7030422Abstract: A semiconductor laser diode module in which a laser diode and an optical fiber are optically coupled with each other efficiently irrespective of an ambient temperature change within the laser diode module. The laser diode module includes a laser diode, an optical system including an optical fiber and a lens portion, a holder configured to receive a portion of the optical system, a base having a holder mounting member and a fastening member, and a bottom plate configured to support the base. The holder is mounted to the fastening member at a first joint position, and the fastening member is mounted to the holder mounting member at a second joint position, where the first and second joint positions are located at substantially a same distance from the bottom plate. Alternatively, the first and second joint positions are coplanar with an active layer of the diode.Type: GrantFiled: July 21, 2003Date of Patent: April 18, 2006Assignee: The Furukawa Electric Co., Ltd.Inventors: Jun Miyokawa, Yuichiro Irie, Etsuji Katayama, Kaoru Sekiguchi, Kiyokazu Tateno
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Patent number: 6734517Abstract: A semiconductor laser diode module in which a laser diode and an optical fiber are optically coupled with each other efficiently irrespective of an ambient temperature change within the laser diode module. The laser diode module includes a laser diode, an optical system including an optical fiber and a lens portion, a base configured to support the laser diode and at least a portion of the optical system, and a bottom plate configured to support the laser diode, the optical system, and the base. The optical system is configured to receive and transmit a beam emitted from the laser diode through the lens portion to the optical fiber along an optical axis. The base includes a structural support member configured to prevent warping of the base, where the structural support member extends along the base in a direction generally parallel to the optical axis.Type: GrantFiled: May 31, 2001Date of Patent: May 11, 2004Assignee: The Furukawa Electric Co., Ltd.Inventors: Jun Miyokawa, Yuichiro Irie, Etsuji Katayama, Kaoru Sekiguchi, Kiyokazu Tateno
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Patent number: 6720582Abstract: A laser diode module in which a laser diode and an optical fiber are optically coupled with each other efficiently irrespective of an ambient temperature change within the laser diode module. The laser diode module includes a laser diode, an optical system, an optical system mounting member supporting at least a portion of the optical system, a laser diode mounting member, and a bottom plate supporting the laser diode, the optical system, the optical system mounting member, and the laser diode mounting member. The optical system receives and transmits a beam emitted from the laser diode through a lens portion to an optical fiber. The optical system mounting member is attached to the laser diode mounting member. The laser diode module preferably includes a thermo module having a first plate member attached to the laser diode mounting member.Type: GrantFiled: May 31, 2001Date of Patent: April 13, 2004Assignee: The Furukawa Electric Co., Ltd.Inventors: Jun Miyokawa, Yuichiro Irie, Etsuji Katayama, Kaoru Sekiguchi, Kiyokazu Tateno
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Publication number: 20040033034Abstract: A semiconductor laser diode module in which a laser diode and an optical fiber are optically coupled with each other efficiently irrespective of an ambient temperature change within the laser diode module. The laser diode module includes a laser diode, an optical system including an optical fiber and a lens portion, a holder configured to receive a portion of the optical system, a base having a holder mounting member and a fastening member, and a bottom plate configured to support the base. The holder is mounted to the fastening member at a first joint position, and the fastening member is mounted to the holder mounting member at a second joint position, where the first and second joint positions are located at substantially a same distance from the bottom plate. Alternatively, the first and second joint positions are coplanar with an active layer of the diode.Type: ApplicationFiled: July 21, 2003Publication date: February 19, 2004Applicant: THE FURUKAWA ELECTRIC CO., LTD.Inventors: Jun Miyokawa, Yuichiro Irie, Etsuji Katayama, Kaoru Sekiguchi, Kiyokazu Tateno
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Publication number: 20040028098Abstract: A semiconductor laser diode module in which a laser diode and an optical fiber are optically coupled with each other efficiently irrespective of an ambient temperature change within the laser diode module. The laser diode module includes a laser diode, an optical system including an optical fiber and a lens portion, a base configured to support the laser diode and at least a portion of the optical system, and a bottom plate configured to support the laser diode, the optical system, and the base. A portion of the base is made of a material having a first thermal expansion coefficient and the bottom plate is constructed of a material having a second thermal expansion coefficient, where the first thermal expansion coefficient is substantially equal to the second thermal expansion coefficient. The optical system is configured to receive and transmit a beam emitted from the laser diode through the lens portion to the optical fiber.Type: ApplicationFiled: July 21, 2003Publication date: February 12, 2004Applicant: THE FURUKAWA ELECTRIC CO., LTD.Inventors: Jun Miyokawa, Yuichiro Irie, Etsuji Katayama, Kaoru Sekiguchi, Kiyokazu Tateno
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Publication number: 20020172475Abstract: The present invention provides a ferrule holder comprising an integral assembly which comprises first pinching portions for pinching the side of a ferrule in a optical ferrule-attached fiber through a line contact of about 2 mm in the longitudinal direction of the ferrule and second pinching members for pinching the side of the ferrule through a line contact of about 0.5 mm in the longitudinal direction of the ferrule, when the adjustment of optical axis in the optical ferrule-attached fiber is to be performed before it is optically coupled with an optical part. Since the adjustment of optical axis is performed while pinching the side of the ferrule through the relatively short line contact in the longitudinal direction of the ferrule after the ferrule has been fixed to a first supporting member, the sufficient range of leverage movement can be secured.Type: ApplicationFiled: February 20, 2002Publication date: November 21, 2002Applicant: THE FURUKAWA ELECTRIC CO., LTD.Inventors: Koichi Miyazaki, Kiyokazu Tateno
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Publication number: 20020021875Abstract: A ferrule fixed module of the invention has the high aligning fixing accuracy of a ferrule to a coupling counter part and is low costs. Additionally, the ferrule fixed module of the invention can shorten the fabrication time thereof. The coupling end surface side of a lensed fiber (8) inserted and fixed to a first ferrule (4a) is faced to a laser diode chip (3) in the aligned state and the ferrule (4a) is fixed to a base (1) through a ferrule fixing component (10). The ferrule fixing component (10) is formed of clamping parts (6) having paired arm parts (12) for clamping and fixing the ferrule (4a) at the parts near the laser diode chip (3) from both sides of side parts and clamping parts (7) having paired arm parts (13) for clamping and fixing the ferrule (4a) at the parts far from the laser diode chip (3) from both sides of the side parts.Type: ApplicationFiled: July 25, 2001Publication date: February 21, 2002Applicant: THE FURUKAWA ELECTRIC CO., LTD.Inventors: Kiyokazu Tateno, Shinichiro Iizuka
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Publication number: 20020009107Abstract: A semiconductor laser diode module in which a laser diode and an optical fiber are optically coupled with each other efficiently irrespective of an ambient temperature change within the laser diode module. The laser diode module includes a laser diode, an optical system including an optical fiber and a lens portion, a base configured to support the laser diode and at least a portion of the optical system, and a bottom plate configured to support the laser diode, the optical system, and the base. The optical system is configured to receive and transmit a beam emitted from the laser diode through the lens portion to the optical fiber along an optical axis. The base includes a structural support member configured to prevent warping of the base, where the structural support member extends along the base in a direction generally parallel to the optical axis.Type: ApplicationFiled: May 31, 2001Publication date: January 24, 2002Applicant: THE FURUKAWA ELECTRIC CO., LTD.Inventors: Jun Miyokawa, Yuichiro Irie, Etsuji Katayama, Kaoru Sekiguchi, Kiyokazu Tateno
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Publication number: 20020009113Abstract: A laser diode module in which a laser diode and an optical fiber are optically coupled with each other efficiently irrespective of an ambient temperature change within the laser diode module. The laser diode module includes a laser diode, an optical system, an optical system mounting member supporting at least a portion of the optical system, a laser diode mounting member, and a bottom plate supporting the laser diode, the optical system, the optical system mounting member, and the laser diode mounting member. The optical system receives and transmits a beam emitted from the laser diode through a lens portion to an optical fiber. The optical system mounting member is attached to the laser diode mounting member. The laser diode module preferably includes a thermo module having a first plate member attached to the laser diode mounting member.Type: ApplicationFiled: May 31, 2001Publication date: January 24, 2002Applicant: THE FURUKAWA ELECTRIC CO., LTD.Inventors: Jun Miyokawa, Yuichiro Irie, Etsuji Katayama, Kaoru Sekiguchi, Kiyokazu Tateno
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Publication number: 20020009106Abstract: A semiconductor laser diode module in which a laser diode and an optical fiber are optically coupled with each other efficiently irrespective of an ambient temperature change within the laser diode module. The laser diode module includes a laser diode, an optical system including an optical fiber and a lens portion, a base configured to support the laser diode and at least a portion of the optical system, and a bottom plate configured to support the laser diode, the optical system, and the base. A portion of the base is made of a material having a first thermal expansion coefficient and the bottom plate is constructed of a material having a second thermal expansion coefficient, where the first thermal expansion coefficient is substantially equal to the second thermal expansion coefficient. The optical system is configured to receive and transmit a beam emitted from the laser diode through the lens portion to the optical fiber.Type: ApplicationFiled: May 31, 2001Publication date: January 24, 2002Applicant: THE FURUKAWA ELECTRIC CO., LTD.Inventors: Jun Miyokawa, Yuichiro Irie, Etsuji Katayama, Kaoru Sekiguchi, Kiyokazu Tateno
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Publication number: 20020005522Abstract: A semiconductor laser diode module in which a laser diode and an optical fiber are optically coupled with each other efficiently irrespective of an ambient temperature change within the laser diode module. The laser diode module includes a laser diode, an optical system including an optical fiber and a lens portion, a holder configured to receive a portion of the optical system, a base having a holder mounting member and a fastening member, and a bottom plate configured to support the base. The holder is mounted to the fastening member at a first joint position, and the fastening member is mounted to the holder mounting member at a second joint position, where the first and second joint positions are located at substantially a same distance from the bottom plate. Alternatively, the first and second joint positions are coplanar with an active layer of the diode.Type: ApplicationFiled: May 31, 2001Publication date: January 17, 2002Applicant: THE FURUKAWA ELECTRIC CO., LTD.Inventors: Jun Miyokawa, Yuichiro Irie, Etsuji Katayama, Kaoru Sekiguchi, Kiyokazu Tateno