Patents by Inventor Shinji MOTOKOSHI
Shinji MOTOKOSHI 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: 11977219Abstract: An optical correction is predictively performed based on a result of AI learning previously performed by use of learning data including measurement data. The optical compensation system is provided with wavefront correction optics, a sensor and a controller. The wavefront correction optics corrects a wavefront of light that passes through a given optical path. The sensor obtains environmental information in the optical path. The controller calculates, based on the environmental information, a predicted wavefront disturbance of the light that has passed through the optical path and controls the wavefront correction optics so as to cancel the predicted wavefront disturbance.Type: GrantFiled: August 7, 2019Date of Patent: May 7, 2024Assignees: MITSUBISHI HEAVY INDUSTRIES, LTD., RIKEN, INSTITUTE FOR LASER TECHNOLOGYInventors: Masashi Iwashimizu, Hiroyuki Daigo, Shingo Nishikata, Kazunori Masukawa, Atsushi Ochiai, Toshikazu Ebisuzaki, Satoshi Wada, Yoshiyuki Takizawa, Masayuki Maruyama, Shinji Motokoshi
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Patent number: 11802990Abstract: An optical system that obtains characteristics of a transmission path in atmosphere, when laser light propagates through this transmission path, at a place separated from this transmission path and before the propagation, and corrects wavefront of the laser light based on the obtained characteristics, is provided. The optical system is provided with an irradiation device and an atmospheric characteristics obtaining system. The irradiation device irradiates an external target with light via a first optical path. The atmospheric characteristics obtaining system is arranged in a second optical path separated from the first optical path and obtains characteristics of atmospheric environment in the first optical path with respect to the irradiated light. The irradiation device is provided with wavefront correction optics. The wavefront correction optics correct wavefront of the irradiated light based on the obtained characteristics.Type: GrantFiled: August 23, 2019Date of Patent: October 31, 2023Assignees: MITSUBISHI HEAVY INDUSTRIES, LTD., RIKEN, INSTITUTE FOR LASER TECHNOLOGYInventors: Masashi Iwashimizu, Hiroyuki Daigo, Shingo Nishikata, Kazunori Masukawa, Atsushi Ochiai, Toshikazu Ebisuzaki, Satoshi Wada, Yoshiyuki Takizawa, Masayuki Maruyama, Shinji Motokoshi
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Patent number: 11621535Abstract: A fiber laser apparatus includes: a short-length type fiber to which an active element is added and that has a length of 300 mm or less: a ferrule attached to an end of the fiber; and a housing that accommodates the fiber and supports the fiber with the ferrule. Each of the housing and the ferrule is composed of a material having a first thermal expansion coefficient that is equal to or have a predetermined difference from a second thermal expansion coefficient of a raw material of the fiber. The predetermined difference between the first and second thermal expansion coefficients is within ?8.6×10?6 to 11.4×10?6/K.Type: GrantFiled: December 14, 2021Date of Patent: April 4, 2023Assignee: KIMMON KOHA CO., LTD.Inventors: Yasushi Fujimoto, Paul Binun, Shinji Motokoshi, Masamori Nakahara, Takeshi Hamada
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Publication number: 20220385025Abstract: An ultraviolet laser apparatus includes: a semiconductor laser that emits an excitation laser light; a fiber laser medium to which the excitation laser light enters from the semiconductor laser and that causes laser oscillation; and an external resonator that: converts a wavelength of a laser light oscillated in the fiber laser medium, and outputs an ultraviolet region continuous wave of at least 0.1W.Type: ApplicationFiled: August 5, 2022Publication date: December 1, 2022Applicant: KIMMON KOHA CO., LTD.Inventors: Yasushi Fujimoto, Paul Binun, Shinji Motokoshi, Masamori Nakahara, Takeshi Hamada
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Publication number: 20220109280Abstract: A fiber laser apparatus includes: a short-length type fiber to which an active element is added and that has a length of 300 mm or less: a ferrule attached to an end of the fiber; and a housing that accommodates the fiber and supports the fiber with the ferrule. Each of the housing and the ferrule is composed of a material having a first thermal expansion coefficient that is equal to or have a predetermined difference from a second thermal expansion coefficient of a raw material of the fiber. The predetermined difference between the first and second thermal expansion coefficients is within ?8.6×10?6 to 11.4×10?6/K.Type: ApplicationFiled: December 14, 2021Publication date: April 7, 2022Applicant: KIMMON KOHA CO., LTD.Inventors: Yasushi Fujimoto, Paul Binun, Shinji Motokoshi, Masamori Nakahara, Takeshi Hamada
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Publication number: 20220102933Abstract: A laser apparatus includes: a laser oscillator that includes a mirror and emits a laser beam; and an external resonator that includes a nonlinear optical crystal that functions as a phase conjugate mirror. The phase conjugate mirror reflects the laser beam and produces a phase conjugate wave that reaches the mirror of the laser oscillator, and the mirror of the laser oscillator and the phase conjugate mirror cause laser oscillation such that a wavelength and a phase of the laser beam oscillated by the laser oscillation are automatically fixed.Type: ApplicationFiled: December 14, 2021Publication date: March 31, 2022Applicant: KIMMON KOHA CO., LTD.Inventors: Yasushi Fujimoto, Paul Binun, Shinji Motokoshi, Masamori Nakahara, Takeshi Hamada
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Publication number: 20210318534Abstract: An optical correction is predictively performed based on a result of AI learning previously performed by use of learning data including measurement data. The optical compensation system is provided with wavefront correction optics, a sensor and a controller. The wavefront correction optics corrects a wavefront of light that passes through a given optical path. The sensor obtains environmental information in the optical path. The controller calculates, based on the environmental information, a predicted wavefront disturbance of the light that has passed through the optical path and controls the wavefront correction optics so as to cancel the predicted wavefront disturbance.Type: ApplicationFiled: August 7, 2019Publication date: October 14, 2021Inventors: Masashi IWASHIMIZU, Hiroyuki DAIGO, Shingo NISHIKATA, Kazunori MASUKAWA, Atsushi OCHIAI, Toshikazu EBISUZAKI, Satoshi WADA, Yoshiyuki TAKIZAWA, Masayuki MARUYAMA, Shinji MOTOKOSHI
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Publication number: 20210311225Abstract: An optical system that obtains characteristics of a transmission path in atmosphere, when laser light propagates through this transmission path, at a place separated from this transmission path and before the propagation, and corrects wavefront of the laser light based on the obtained characteristics, is provided. The optical system is provided with an irradiation device and an atmospheric characteristics obtaining system. The irradiation device irradiates an external target with light via a first optical path. The atmospheric characteristics obtaining system is arranged in a second optical path separated from the first optical path and obtains characteristics of atmospheric environment in the first optical path with respect to the irradiated light. The irradiation device is provided with wavefront correction optics. The wavefront correction optics correct wavefront of the irradiated light based on the obtained characteristics.Type: ApplicationFiled: August 23, 2019Publication date: October 7, 2021Inventors: Masashi IWASHIMIZU, Hiroyuki DAIGO, Shingo NISHIKATA, Kazunori MASUKAWA, Atsushi OCHIAI, Toshikazu EBISUZAKI, Satoshi WADA, Yoshiyuki TAKIZAWA, Masayuki MARUYAMA, Shinji MOTOKOSHI
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Publication number: 20210270568Abstract: A laser irradiation apparatus is provided with a controller that calculates at least one predicted movement position into which a target is predicted to move at a specific time in future, a transmission laser source that generates a transmission laser, irradiation optics configured to emit the transmission laser to the target and emit search laser to the predicted movement position and wavefront correction optics. The wavefront correction optics are configured to correct a wavefront of the transmission laser at the specific time based on observation light that returns when the search laser is emitted to the predicted movement position.Type: ApplicationFiled: July 3, 2019Publication date: September 2, 2021Inventors: Masashi IWASHIMIZU, Hiroyuki DAIGO, Shingo NISHIKATA, Kazunori MASUKAWA, Atsushi OCHIAI, Toshikazu EBISUZAKI, Satoshi WADA, Yoshiyuki TAKIZAWA, Masayuki MARUYAMA, Shinji MOTOKOSHI