Patents by Inventor Etsu Hashimoto
Etsu Hashimoto 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: 20240094474Abstract: An optical connector cleaning tool includes a cleaning portion pressed against a coupling end face of an optical connector, a container storing a cleaning liquid, and an atomizer spraying the cleaning liquid to the cleaning portion.Type: ApplicationFiled: November 29, 2023Publication date: March 21, 2024Inventors: Shuichiro ASAKAWA, Kenta ARAI, Etsu HASHIMOTO
-
Patent number: 11911805Abstract: An optical connector cleaning tool includes a fitting portion (44) fitted in the first or second hole (36, 37) of a connection component (32) into which a compact dual core optical connector is fitted on one end side and a cleaning medium (45) projecting from the fitting portion (44). The fitting portion (44) is formed to have a shape by which the fitting portion (44) is fitted in the first or second hole (36, 37) in each of the first and second postures as postures shifted through 180° with respect to as the center the middle (P2) of a virtual straight line connecting the centers of the two ferrules when viewed from an axial direction of the compact dual core optical connector. The fitting portion (44) contacts one ferrule in a state in which the fitting portion (44) is set in the first posture. The fitting portion (44) contacts the other ferrule in a state in which the fitting portion (44) is set in the second posture.Type: GrantFiled: January 22, 2020Date of Patent: February 27, 2024Assignees: NTT ADVANCED TECHNOLOGY CORPORATION, SENKO ADVANCED COMPONENTS, INC.Inventors: Etsu Hashimoto, Yoshiaki Haga, Kazutoshi Ando, Yohei Omodaka
-
Patent number: 11880073Abstract: An optical connector cleaning tool includes a cleaning portion (101), a container (102) configured to store a cleaning liquid (121), and an atomizer (103) configured to atomize the cleaning liquid (121) stored in the container (102) by ultrasonic atomization. The atomizer (103) includes an atomizing separation portion (105) configured to cover a liquid supply port (104) and pass not a liquid but mist. In addition, the cleaning tool includes a control circuit (107) configured to control an operation time of the atomizer (103) by a set time.Type: GrantFiled: November 21, 2019Date of Patent: January 23, 2024Assignee: NTT ADVANCED TECHNOLOGY CORPORATIONInventors: Shuichiro Asakawa, Kenta Arai, Etsu Hashimoto
-
Publication number: 20230221499Abstract: An optical connector cleaning tool includes a tip (44) for cleaning in a distal end portion. The tip (44) has a distal end face (51) in which a delivery hole (53) and a winding hole (54) for a cleaning medium are formed, and has an outer circumferential surface (52). The distal end face (51) has a first inclined surface (56) and a second inclined surface (57) forming the distal end portion of the tip (44) into a mountain shape in cross section, and has a convex curved surface (58) for connecting them to the outer circumferential surface (52). The first inclined surface (56) crosses an axis of the tip (44), and inclines at an angle smaller than an inclination angle of a distal end face of an APC connector.Type: ApplicationFiled: December 25, 2020Publication date: July 13, 2023Inventors: Etsu HASHIMOTO, Kazutoshi ANDO, Terumasa KAMOUCHI
-
Publication number: 20220137307Abstract: An optical connector cleaning tool includes a cleaning tool main body, a feed-side bobbin, a cleaning head (cleaning portion), a winding-side bobbin, a moving body that moves at the time of cleaning, a feed mechanism that sends an unused cleaning medium in synchronism with the moving body, and a winding mechanism that drives the winding-side bobbin. The feed mechanism moves a turn-back portion at one point where the cleaning medium is turned back in a direction to separate from the winding-side bobbin. The winding mechanism includes a driving piece that engages with a rotation body of the winding-side bobbin. The driving piece slips with respect to the rotation body when a load to press engaging projections of the rotation body has reached a predetermined load.Type: ApplicationFiled: November 26, 2019Publication date: May 5, 2022Applicant: NTT ADVANCED TECHNOLOGY CORPORATIONInventors: Terumasa KAMOUCHI, Kazutoshi ANDO, Etsu HASHIMOTO
-
Publication number: 20220088645Abstract: An optical connector cleaning tool includes a fitting portion (44) fitted in the first or second hole (36, 37) of a connection component (32) into which a compact dual core optical connector is fitted on one end side and a cleaning medium (45) projecting from the fitting portion (44). The fitting portion (44) is formed to have a shape by which the fitting portion (44) is fitted in the first or second hole (36, 37) in each of the first and second postures as postures shifted through 180° with respect to as the center the middle (P2) of a virtual straight line connecting the centers of the two ferrules when viewed from an axial direction of the compact dual core optical connector. The fitting portion (44) contacts one ferrule in a state in which the fitting portion (44) is set in the first posture. The fitting portion (44) contacts the other ferrule in a state in which the fitting portion (44) is set in the second posture.Type: ApplicationFiled: January 22, 2020Publication date: March 24, 2022Inventors: Etsu HASHIMOTO, Yoshiaki HAGA, Kazutoshi ANDO, Yohei OMODAKA
-
Publication number: 20220026642Abstract: An optical connector cleaning tool includes a cleaning portion (101), a container (102) configured to store a cleaning liquid (121), and an atomizer (103) configured to atomize the cleaning liquid (121) stored in the container (102) by ultrasonic atomization. The atomizer (103) includes an atomizing separation portion (105) configured to cover a liquid supply port (104) and pass not a liquid but mist. In addition, the cleaning tool includes a control circuit (107) configured to control an operation time of the atomizer (103) by a set time.Type: ApplicationFiled: November 21, 2019Publication date: January 27, 2022Inventors: Shuichiro ASAKAWA, Kenta ARAI, Etsu HASHIMOTO
-
Patent number: 10006831Abstract: An end face observation device (101) of this invention includes a first lens (12) including a missing portion (1200) extending through in an optical axis direction, a light source (14) configured to generate light that irradiates an end face (200A) of an observation target via the first lens, and an image capturing element (15) configured to receive an image of the end face of the observation target via the first lens. This can implement an end face observation device that integrates a structure configured to operate the end face of the observation target with an observation device configured to observe the end face by inserting the structure configured to operate the end face of the observation target into the missing portion of the first lens.Type: GrantFiled: December 16, 2014Date of Patent: June 26, 2018Assignee: NIPPON TELEGRAPH AND TELEPHONE CORPORATIONInventors: Yuichi Higuchi, Koichi Hadama, Joji Yamaguchi, Toru Miura, Etsu Hashimoto
-
Patent number: 9588300Abstract: An optical input/output device includes a phase modulator element and an optical element. The phase modulator element includes a plurality of pixels arranged in a matrix and is configured to change an optical phase of signal light by applying a driving signal corresponding to a phase pattern. The optical element is configured to convert a direction of exit of the signal light so as to irradiate each pixel with the signal light from the input port. A pattern generator unit includes superimposing means for superimposing a periodic phase pattern having a predetermined period in at least one direction in a plane of the phase modulator element, and means for controlling an amplitude of the periodic phase pattern. The signal light is diffracted to a position according to the period of the superimposed periodic phase pattern, so that light intensity of the signal light is dispersed.Type: GrantFiled: December 6, 2013Date of Patent: March 7, 2017Assignee: Nippon Telegraph and Telephone CorporationInventors: Mitsumasa Nakajima, Keita Yamaguchi, Joji Yamaguchi, Yuzo Ishii, Koichi Hadama, Naru Nemoto, Etsu Hashimoto, Kazunori Seno, Kenya Suzuki, Yoshito Jin
-
Publication number: 20160313211Abstract: An end face observation device (101) of this invention includes a first lens (12) including a missing portion (1200) extending through in an optical axis direction, a light source (14) configured to generate light that irradiates an end face (200A) of an observation target via the first lens, and an image capturing element (15) configured to receive an image of the end face of the observation target via the first lens. This can implement an end face observation device that integrates a structure configured to operate the end face of the observation target with an observation device configured to observe the end face by inserting the structure configured to operate the end face of the observation target into the missing portion of the first lens.Type: ApplicationFiled: December 16, 2014Publication date: October 27, 2016Inventors: Yuichi Higuchi, Koichi Hadama, Joji Yamaguchi, Toru Miura, Etsu Hashimoto
-
Patent number: 9294826Abstract: A wavelength selection switch system includes a wavelength selection switch including an input port and an output port, a nonvolatile memory in which configuration information for controlling an operation of the wavelength selection switch is stored, a high-speed memory in which reading and writing can be performed at a higher speed than in the nonvolatile memory and that stores a copy of the configuration information stored in the nonvolatile memory, and a control unit that controls an operation of the wavelength selection switch based on the configuration information read from the high-speed memory, wherein the control unit periodically reads the configuration information stored in the nonvolatile memory and writes a copy of the read configuration information to the high-speed memory.Type: GrantFiled: February 5, 2013Date of Patent: March 22, 2016Assignees: Nippon Telegraph and Telephone Corporation, NTT Electronics CorporationInventors: Tomoyoshi Kataoka, Mitsunori Fukutoku, Etsu Hashimoto, Akio Sahara, Norio Sato, Yosuke Takeuchi
-
Patent number: 9247324Abstract: A wavelength selection switch system includes a wavelength selection switch including an input port and an output port, a nonvolatile memory in which configuration information for controlling an operation of the wavelength selection switch is stored, a high-speed memory in which reading and writing can be performed at a higher speed than in the nonvolatile memory and that stores a copy of the configuration information stored in the nonvolatile memory, and a control unit that controls an operation of the wavelength selection switch based on the configuration information read from the high-speed memory, wherein the control unit periodically reads the configuration information stored in the nonvolatile memory and writes a copy of the read configuration information to the high-speed memory.Type: GrantFiled: February 5, 2013Date of Patent: January 26, 2016Assignees: Nippon Telegraph and Telephone Corporation, NTT Electronics CorporationInventors: Tomoyoshi Kataoka, Mitsunori Fukutoku, Etsu Hashimoto, Akio Sahara, Norio Sato, Yosuke Takeuchi
-
Publication number: 20150316725Abstract: An optical input/output device includes a phase modulator element and an optical element. The phase modulator element includes a plurality of pixels arranged in a matrix and is configured to change an optical phase of signal light by applying a driving signal corresponding to a phase pattern. The optical element is configured to convert a direction of exit of the signal light so as to irradiate each pixel with the signal light from the input port. A pattern generator unit includes superimposing means for superimposing a periodic phase pattern having a predetermined period in at least one direction in a plane of the phase modulator element, and means for controlling an amplitude of the periodic phase pattern. The signal light is diffracted to a position according to the period of the superimposed periodic phase pattern, so that light intensity of the signal light is dispersed.Type: ApplicationFiled: December 6, 2013Publication date: November 5, 2015Applicant: NIPPON TELEGRAPH AND TELEPHONE CORPORATIONInventors: Mitsumasa Nakajima, Keita Yamaguchi, Joji Yamaguchi, Yuzo Ishii, Koichi Hadama, Naru Nemoto, Etsu Hashimoto, Kazunori Seno, Kenya Suzuki, Yoshito Jin
-
Publication number: 20150030327Abstract: A wavelength selection switch system includes a wavelength selection switch including an input port and an output port, a nonvolatile memory in which configuration information for controlling an operation of the wavelength selection switch is stored, a high-speed memory in which reading and writing can be performed at a higher speed than in the nonvolatile memory and that stores a copy of the configuration information stored in the nonvolatile memory, and a control unit that controls an operation of the wavelength selection switch based on the configuration information read from the high-speed memory, wherein the control unit periodically reads the configuration information stored in the nonvolatile memory and writes a copy of the read configuration information to the high-speed memory.Type: ApplicationFiled: February 5, 2013Publication date: January 29, 2015Applicants: NIPPON TELEGRAPH AND TELEPHONE CORPORATION, NTT Electronics CorporationInventors: Tomoyoshi Kataoka, Mitsunori Fukutoku, Etsu Hashimoto, Akio Sahara, Norio Sato, Yosuke Takeuchi
-
Patent number: 8699832Abstract: A light-shielding portion (10) shields the light spot of output light output toward a shunt position ? by a projecting portion (12). Hence, the output light output toward the shunt position ? does not travel to an output port (111). This allows to prevent crosstalk.Type: GrantFiled: March 29, 2010Date of Patent: April 15, 2014Assignees: Nippon Telegraph and Telephone Corporation, NTT Electronics CorporationInventors: Nobuaki Matsuura, Koichi Hadama, Etsu Hashimoto, Yuzo Ishii, Mitsuo Usui, Tohru Matsuura, Toshiki Nishizawa, Yuji Mitsuhashi
-
Patent number: 8599460Abstract: A movable beam (182a) and a movable beam (182b) each having one end fixed to a frame portion (181) of a mirror substrate (108) are provided inside the frame portion (181). The movable beam (182a) and the movable beam (182b) each having one end fixed to a corresponding to one of two opposite inner sides of the frame portion (181) are aligned at a predetermined distance on the same line in the direction in which the two sides face each other. Each of the movable beam (182a) and the movable beam (182b) has the other end displaceable in the normal line direction of the mirror substrate (108) and therefore has a cantilever structure. A mirror (183) is arranged between the movable beam (182a) and the movable beam (182b) and connected to them via a pair of connectors (109a, 109b).Type: GrantFiled: April 15, 2008Date of Patent: December 3, 2013Assignee: Nippon Telegraph and Telephone CorporationInventors: Mitsuo Usui, Shingo Uchiyama, Fusao Shimokawa, Etsu Hashimoto, Johji Yamaguchi, Tohru Matsuura, Toshifumi Konishi
-
Publication number: 20120093458Abstract: A light-shielding portion (10) shields the light spot of output light output toward a shunt position ? by a projecting portion (12). Hence, the output light output toward the shunt position ? does not travel to an output port (111). This allows to prevent crosstalk.Type: ApplicationFiled: March 29, 2010Publication date: April 19, 2012Inventors: Nobuaki Matsuura, Koichi Hadama, Etsu Hashimoto, Yuzo Ishii, Mitsuo Usui, Tohru Matsuura, Toshiki Nishizawa, Yuji Mitsuhashi
-
Publication number: 20100118372Abstract: A movable beam (182a) and a movable beam (182b) each having one end fixed to a frame portion (181) of a mirror substrate (108) are provided inside the frame portion (181). The movable beam (182a) and the movable beam (182b) each having one end fixed to a corresponding to one of two opposite inner sides of the frame portion (181) are aligned at a predetermined distance on the same line in the direction in which the two sides face each other. Each of the movable beam (182a) and the movable beam (182b) has the other end displaceable in the normal line direction of the mirror substrate (108) and therefore has a cantilever structure. A mirror (183) is arranged between the movable beam (182a) and the movable beam (182b) and connected to them via a pair of connectors (109a, 109b).Type: ApplicationFiled: April 15, 2008Publication date: May 13, 2010Inventors: Mitsuo Usui, Shingo Uchiyama, Fusao Shimokawa, Etsu Hashimoto, Johji Yamaguchi, Tohru Matsuura, Toshifumi Konishi
-
Patent number: 7139491Abstract: Extremely advanced technology for scrambling an optical signal based on quantum mechanical fluctuation is used to provide a highly reliable optical communication method which can invalidate illicit activities such as wire-tapping, a system, and a laser oscillator which is used in the method and system. A transmitter side generates laser light, simultaneously oscillated at a plurality of wavelengths, the total number of generated photons being constant, and transmits a signal light comprising data which has been added to the light of the plurality of wavelengths; and at a receiving side, light, simultaneously oscillated at the plurality of wavelengths, is selected from the signal light, and the data is demodulated.Type: GrantFiled: April 13, 2006Date of Patent: November 21, 2006Assignee: Nippon Telegraph and Telephone CorporationInventors: Yoshitada Katagiri, Etsu Hashimoto, Kenichi Suzuki
-
Publication number: 20060193636Abstract: Extremely advanced technology for scrambling an optical signal based on quantum mechanical fluctuation is used to provide a highly reliable optical communication method which can invalidate illicit activities such as wire-tapping, a system, and a laser oscillator which is used in the method and system. A transmitter side generates laser light, simultaneously oscillated at a plurality of wavelengths, the total number of generated photons being constant, and transmits a signal light comprising data which has been added to the light of the plurality of wavelengths; and at a receiving side, light, simultaneously oscillated at the plurality of wavelengths, is selected from the signal light, and the data is demodulated.Type: ApplicationFiled: April 13, 2006Publication date: August 31, 2006Inventors: Yoshitada Katagiri, Etsu Hashimoto, Kenichi Suzuki