Patents by Inventor Tsuneari ITO
Tsuneari ITO 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: 11965801Abstract: A measurement system includes a measurement device including a light source, and a first power meter, and one or a plurality of connection members each configured to optically connect a pair of optical fiber lines of the plurality of optical fiber lines. A first optical fiber line of the pair of optical fiber lines includes a first end and a second end, a second optical fiber line of the pair of optical fiber lines includes a third end and a fourth end, the one or plurality of connection members optically connect the second end to the fourth end, the light source causes testing light to be incident on the first end, and the first power meter measures first intensity of first output light output from the third end by causing the testing light to propagate through the pair of optical fiber lines.Type: GrantFiled: May 22, 2019Date of Patent: April 23, 2024Assignees: SUMITOMO ELECTRIC OPTIFRONTIER CO., LTD., SUMITOMO ELECTRIC INDUSTRIES, LTD.Inventors: Kazuya Masuda, Tomohiko Ueda, Kenichiro Otsuka, Tsuneari Ito, Tetsufumi Tsuzaki, Yoshifumi Hishikawa, Hitoshi Hatayama
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Publication number: 20210239569Abstract: A measurement system includes a measurement device including a light source, and a first power meter, and one or a plurality of connection members each configured to optically connect a pair of optical fiber lines of the plurality of optical fiber lines. A first optical fiber line of the pair of optical fiber lines includes a first end and a second end, a second optical fiber line of the pair of optical fiber lines includes a third end and a fourth end, the one or plurality of connection members optically connect the second end to the fourth end, the light source causes testing light to be incident on the first end, and the first power meter measures first intensity of first output light output from the third end by causing the testing light to propagate through the pair of optical fiber lines.Type: ApplicationFiled: May 22, 2019Publication date: August 5, 2021Applicants: SUMITOMO ELECTRIC OPTIFRONTIER CO., LTD., SUMITOMO ELECTRIC INDUSTRIES, LTD.Inventors: Kazuya MASUDA, Tomohiko UEDA, Kenichiro OTSUKA, Tsuneari ITO, Tetsufumi TSUZAKI, Yoshifumi HISHIKAWA, Hitoshi HATAYAMA
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Patent number: 11073671Abstract: A termination unit includes: a plurality of first optical fibers fusion-connected to a multicore cable; a tray slidable in a first direction, the tray being provided on one end side of the termination unit in the first direction; and a plurality of adapters which are provided in a line on the tray, to which a plurality of second optical fibers are connected from each of one end sides of the adapters, and to which the plurality of first optical fibers are connected from each of the other end sides of the adapters, in which the tray has a cover part for protecting the plurality of adapters, and in which the cover part is rotatable with a shaft that extends along a second direction, and the cover part rotates downward when the tray has slid in a direction toward the one end side from the other end side.Type: GrantFiled: November 27, 2017Date of Patent: July 27, 2021Assignees: SEI OPTIFRONTIER CO., LTD., JAPAN COMMUNICATION ACCESSORIES MANUFACTURING CO., LTD., SUMITOMO ELECTRIC INDUSTRIES, LTD.Inventors: Kazuya Masuda, Junji Fukui, Tomoyuki Yokokawa, Tetsuya Oosugi, Takayuki Yokochi, Masanori Yamanaka, Tsuneari Ito
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Publication number: 20210055497Abstract: A termination unit includes: a plurality of first optical fibers fusion-connected to a multicore cable; a tray slidable in a first direction, the tray being provided on one end side of the termination unit in the first direction; and a plurality of adapters which are provided in a line on the tray, to which a plurality of second optical fibers are connected from each of one end sides of the adapters, and to which the plurality of first optical fibers are connected from each of the other end sides of the adapters, in which the tray has a cover part for protecting the plurality of adapters, and in which the cover part is rotatable with a shaft that extends along a second direction, and the cover part rotates downward when the tray has slid in a direction toward the one end side from the other end side.Type: ApplicationFiled: November 27, 2017Publication date: February 25, 2021Applicants: SEI Optifrontier Co., Ltd., Japan Communication Accessories Manufacturing Co., Ltd., SUMITOMO ELECTRIC INDUSTRIES, LTD.Inventors: Kazuya MASUDA, Junji FUKUI, Tomoyuki YOKOKAWA, Tetsuya OOSUGI, Takayuki YOKOCHI, Masanori YAMANAKA, Tsuneari ITO
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Patent number: 10859783Abstract: An optical fiber rack includes: a rack part on which a plurality of termination units arranged along an up-down direction are located; an optical fiber housing part which has a back plate and in which an extra length wiring part in a plurality of optical fiber bundles connected to each of the plurality of termination units is housed; and a plurality of first dividing bodies for dividing locations of the optical fiber bundles in the optical fiber housing part, the plurality of first dividing bodies being attached to the back plate so as to be arranged along the up-down direction in the optical fiber housing part. The first dividing body has a holding part for holding the corresponding optical fiber bundle, and the holding part of the first dividing body provided lower in the up-down direction is positioned to be separated from the back plate.Type: GrantFiled: November 27, 2017Date of Patent: December 8, 2020Assignees: SUMITOMO ELECTRIC INDUSTRIES, LTD., JAPAN COMMUNICATION ACCESSORIES MANUFACTURING CO., LTD., SEI OPTIFRONTIER CO., LTD.Inventors: Takayasu Yamauchi, Tomohiko Ueda, Tsuneari Ito, Takayuki Yokochi, Kazuya Masuda
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Patent number: 10677996Abstract: An optical connector according to an exemplary embodiment is an optical connector including a plurality of optical connector plugs collectively connected to each of a plurality of adapters arranged along a first direction and a second direction intersecting the first direction, along a connection direction intersecting both the first direction and the second direction, the optical connector includes: a plurality of holders configured to be arranged along the second direction while holding the plurality of optical connector plugs arranged in the first direction, and a handle configured to hold the plurality of holders arranged in the second direction.Type: GrantFiled: March 6, 2019Date of Patent: June 9, 2020Assignees: SEI OPTIFRONTIER CO., LTD., SUMITOMO ELECTRIC INDUSTRIES, LTD.Inventors: Yohei Aoshima, Tomoyuki Yokokawa, Tsuneari Ito, Kenichiro Otsuka
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Patent number: 10523317Abstract: A measurement system is a measurement system inspecting an optical transmission line configured by connecting a plurality of optical cables, each of which includes a plurality of optical fibers, wherein the optical transmission line includes a plurality of optical fiber lines configured by connecting the plurality of optical fibers in the plurality of optical cables, the measurement system including: a first measurement device configured to be disposed at a first end of the optical transmission line; and a second measurement device configured to be disposed at a second end of the optical transmission line, wherein the first measurement device and the second measurement device perform a first measurement to inspect whether the optical cable is misconnected, and a second measurement to inspect the plurality of optical fiber lines in a case where it is determined that there is no misconnection in the first measurement.Type: GrantFiled: June 5, 2018Date of Patent: December 31, 2019Assignees: SUMITOMO ELECTRIC INDUSTRIES, LTD., SEI Optifrontier Co., Ltd., SUMITOMO ELECTRIC LIGHTWAVE CORP.Inventors: Kazuya Masuda, Tomohiko Ueda, Tsuneari Ito, Kenichiro Otsuka, Yoshifumi Hishikawa, Gouichi Fukumoto, Tetsufumi Tsuzaki, Toshiyuki Miyamoto, Takashi Murakami, Yoshiyuki Suetsugu, Takashi Kondo
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Publication number: 20190372665Abstract: A measurement system is a measurement system inspecting an optical transmission line configured by connecting a plurality of optical cables, each of which includes a plurality of optical fibers, wherein the optical transmission line includes a plurality of optical fiber lines configured by connecting the plurality of optical fibers in the plurality of optical cables, the measurement system including: a first measurement device configured to be disposed at a first end of the optical transmission line; and a second measurement device configured to be disposed at a second end of the optical transmission line, wherein the first measurement device and the second measurement device perform a first measurement to inspect whether the optical cable is misconnected, and a second measurement to inspect the plurality of optical fiber lines in a case where it is determined that there is no misconnection in the first measurement.Type: ApplicationFiled: June 5, 2018Publication date: December 5, 2019Applicants: SUMITOMO ELECTRIC INDUSTRIES, LTD., SEI Optifrontier Co., Ltd., SUMITOMO ELECTRIC LIGHTWAVE CORP.Inventors: Kazuya MASUDA, Tomohiko UEDA, Tsuneari ITO, Kenichiro OTSUKA, Yoshifumi HISHIKAWA, Gouichi FUKUMOTO, Tetsufumi TSUZAKI, Toshiyuki MIYAMOTO, Takashi MURAKAMI, Yoshiyuki SUETSUGU, Takashi KONDO
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Publication number: 20190346645Abstract: An optical fiber rack includes: a rack part on which a plurality of termination units arranged along an up-down direction are located; an optical fiber housing part which has a back plate and in which an extra length wiring part in a plurality of optical fiber bundles connected to each of the plurality of termination units is housed; and a plurality of first dividing bodies for dividing locations of the optical fiber bundles in the optical fiber housing part, the plurality of first dividing bodies being attached to the back plate so as to be arranged along the up-down direction in the optical fiber housing part. The first dividing body has a holding part for holding the corresponding optical fiber bundle, and the holding part of the first dividing body provided lower in the up-down direction is positioned to be separated from the back plate.Type: ApplicationFiled: November 27, 2017Publication date: November 14, 2019Applicants: SUMITOMO ELECTRIC INDUSTRIES, LTD., Japan Communication Accessories Manufacturing Co., Ltd., SEI Optifrontier Co., Ltd.Inventors: Takayasu YAMAUCHI, Tomohiko UEDA, Tsuneari ITO, Takayuki YOKOCHI, Kazuya MASUDA
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Publication number: 20190293889Abstract: An optical fiber rack includes a rack part on which a termination unit is located, and an optical fiber housing part for housing an extra length wiring part in an optical fiber bundle, the optical fiber housing part being positioned in a first direction. The termination unit includes a plurality of first optical fibers, a ay provided on one end side of the termination unit in a second direction, the tray being slidable in the second direction, and a plurality of adapters which are arranged in a line on the tray. The tray has a first support part for supporting the optical fiber bundle, the optical fiber rack further includes a second support part arranged in the second direction with respect to the first support part, and the second support part stretchably supports the optical fiber bundle extending from the first support part to the optical fiber housing part.Type: ApplicationFiled: November 27, 2017Publication date: September 26, 2019Applicants: SEI Optifrontier Co., Ltd., Japan Communication Accessories Manufacturing Co., Ltd., SUMITOMO ELECTRIC INDUSTRIES, LTD.Inventors: Kazuya MASUDA, Tomoyuki YOKOKAWA, Junji FUKUI, Tetsuya OOSUGI, Takayuki YOKOCHI, Masanori YAMANAKA, Eisuke OKI, Tsuneari ITO
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Publication number: 20190278029Abstract: An optical connector according to an exemplary embodiment is an optical connector including a plurality of optical connector plugs collectively connected to each of a plurality of adapters arranged along a first direction and a second direction intersecting the first direction, along a connection direction intersecting both the first direction and the second direction, the optical connector includes: a plurality of holders configured to be arranged along the second direction while holding the plurality of optical connector plugs arranged in the first direction, and a handle configured to hold the plurality of holders arranged in the second direction.Type: ApplicationFiled: March 6, 2019Publication date: September 12, 2019Applicants: SEI OPTIFRONTIER CO., LTD., SUMITOMO ELECTRIC INDUSTRIES, LTD.Inventors: Yohei AOSHIMA, Tomoyuki YOKOKAWA, Tsuneari ITO, Kenichiro OTSUKA