-
41.发明公开公开(公告)号：US20230375847A1
公开(公告)日：2023-11-23
申请号：US18363651
申请日：2023-08-01
Applicant: Gigaphoton Inc. , Inter-University Research Institute Corporation, National Institutes of Natural Sciences
Inventor： Yuki TAMARU , Taisuke MIURA , Ryo YASUHARA
CPC classification number: G02B27/28 , H01S3/0401 , H01S3/2251 , H01S3/2256 , H01S3/23
Abstract: An optical isolator includes a first polarizer arranged such that a transmission axis thereof is set to cause a normalized transmittance with respect to incident light having a wavelength of ultraviolet and linear polarization to be 0.9 or more, a Faraday rotator using a Faraday material configured to rotate a polarization direction of light having transmitted through the first polarizer in a first rotation direction by a first rotation amount by a magnetic field and rotate the polarization direction in a second rotation direction opposite to the first rotation direction by a second rotation amount by optical activity or birefringence, and a second polarizer arranged such that a transmission axis thereof is set to cause a normalized transmittance with respect to the incident light having transmitted through the Faraday rotator to be 0.9 or more.
-
42.发明公开公开(公告)号：US20230375846A1
公开(公告)日：2023-11-23
申请号：US18363279
申请日：2023-08-01
Applicant: Gigaphoton Inc. , Inter-University Research Institute Corporation, National Institutes of Natural Sciences
Inventor： Yuki TAMARU , Taisuke MIURA , Ryo YASUHARA
CPC classification number: G02B27/28 , H01S3/0401 , H01S3/2256 , H01S3/2251 , H01S3/23
Abstract: An optical isolator according to an aspect of the present disclosure includes a first polarizer through which incident light transmits, a Faraday rotator configured to rotate the polarization direction of the light, and a second polarizer through which the light transmits. The Faraday rotator includes a calcium fluoride crystal. When a, b, and c axes are the [001], [100], and [010] crystallographic axes, respectively, and x, y, and z axes are obtained by rotating the three axes by a first angle of 40° to 50° about the c axis and by a second angle of 45° to 75° about the b axis rotated by the first angle, the z axis is parallel to the propagation direction of the light, and the calcium fluoride crystal is disposed such that the transmission axis of the first polarizer and the x axis have an angle difference of 0° to 45°.
-
公开(公告)号：US20230318710A1
公开(公告)日：2023-10-05
申请号：US18126663
申请日：2023-03-27
Inventor： Hitoshi KIUCHI
IPC: H04B10/2575 , H04B10/548 , H04B10/67 , H04B10/50
CPC classification number: H04B10/25753 , H04B10/548 , H04B10/676 , H04B10/50597 , H04B10/50577
Abstract: A forward optical intensity modulation signal, generated by optical intensity-modulating a laser signal using a forward microwave phase modulation signal, is transmitted from a base to a remote station. A backward microwave phase modulation signal, in which frequency of the forward microwave phase modulation signal is changed by demodulating the forward optical intensity modulation signal, is generated, and a backward optical intensity modulation signal, generated by optical intensity-modulating the laser signal using the backward microwave phase modulation signal, is transmitted from the remote station to the base. The backward microwave phase modulation signal is extracted by photoelectric converting the backward optical intensity modulation signal, a round trip timing is extracted by demodulating the backward microwave phase modulation signal, and transmission delay is determined from a difference between the timing and the round trip timing.
-
公开(公告)号：US20230281498A1
公开(公告)日：2023-09-07
申请号：US18019909
申请日：2021-08-24
Applicant: HAMAMATSU PHOTONICS K.K. , INTER-UNIVERSITY RESEARCH INSTITUTE CORPORATION NATIONAL INSTITUTES OF NATURAL SCIENCES
Inventor： Hiroto SAKAI , Kenji OHMORI , Taro ANDO , Sylvain DE LÉSÉLEUC , Takafumi TOMITA , Seiji SUGAWA , Yoshiyuki OHTAKE , Haruyoshi TOYODA
Abstract: A quantum simulator includes a chamber, a light beam generation apparatus, and a photodetector. The light beam generation apparatus includes a light source, a spatial light modulator, and a lens. Each of pixels of the spatial light modulator has a rectangular shape with a side parallel to a first direction or a second direction, and the pixels are arranged at regular intervals along the first direction and the second direction. When an xy coordinate system including an x axis parallel to the first direction and a y axis parallel to the second direction is set on an image plane, the light beam generation apparatus forms and regularly arranges focusing spots such that a minimum value of a difference between x coordinate values and a minimum value of a difference between y coordinate values of center positions of the focusing spots are longer than a non-overlapping distance.
-
公开(公告)号：US20230137277A1
公开(公告)日：2023-05-04
申请号：US17910898
申请日：2021-03-12
Inventor： Takunori TAIRA , Hwan Hong LIM
IPC: H01S3/113 , H01S3/08 , H01S3/0941 , H01S3/16
Abstract: An optical oscillator includes a first reflection part configured to reflect light of a first wavelength, a laser medium excited by excitation light of a second wavelength different from the first wavelength and configured to emit light of the first wavelength, a second reflection part configured to form an unstable resonator together with the first reflection part, the unstable resonator being configured to output annular laser light of the first wavelength, and a saturable absorption part disposed between the laser medium and the second reflection part and of which a transmittance increases with absorption of light of the first wavelength. When a power of the excitation light is indicated by Pp (kW), and an inner diameter of the annular laser light is indicated by di, and an outer diameter is indicated by do, and do/di is a magnification m, the magnification m satisfies a0+a1 Log(Pp)≤m≤b0+b1Pp+b2Pp2.
-
Patent Agency Ranking
公开(公告)号：US11548882B2
公开(公告)日：2023-01-10
申请号：US17050070
申请日：2019-04-26
Applicant: OSAKA UNIVERSITY , KYOTO UNIVERSITY , Inter-University Research Institute Corporation National Institutes of Natural Sciences
Inventor： Ryu Nagata , Yasuo Mori , Masayuki Mori , Motohiro Nishida , Takuro Tomita
IPC: C07D413/12 , A61P43/00 , C07D261/20 , C07D413/04 , C07D413/14 , C07D417/12 , C07D487/08
Abstract: The present invention provides a compound, a salt thereof, or a prodrug thereof as a compound effective for preventing and/or treating fibrosis, the compound being represented by formula (1) (wherein A is an optionally substituted benzene ring; B is optionally substituted aryl or optionally substituted heteroaryl; X is an oxygen atom or a sulfur atom; Y is a nitrogen atom or a carbon atom; of Y is a single or double bond when Y is a carbon atom, or of Y is a single bond when Y is a nitrogen atom; each R1 independently represents lower alkyl, or two R1s may be bound to each other to form a spiro ring or a crosslinked structure, or two R1s may be bound to each other to form a saturated fused heterocycle together with nitrogen and carbon atoms constituting a ring containing Y; p is 0, 1, or 2; or (R1)p is oxo).
-
47.发明申请公开(公告)号：US20220329205A1
公开(公告)日：2022-10-13
申请号：US17638229
申请日：2020-07-20
Inventor： Hideki ISHIZUKI , Takunori TAIRA
Abstract: A crystal quartz element includes a main face provided with a plurality of polarity inverted regions and a polarity non-inverted region, the plurality of polarity inverted regions are spaced apart from each other via the polarity non-inverted region, and the main face is a plane face. A method for manufacturing a crystal quartz element includes: preparing a crystal quartz body including a first main face which is a plane face, and a first pressing jig including a first pressing face on which a plurality of first projections are provided; and forming a plurality of polarity inverted regions corresponding to the plurality of first projections in the crystal quartz body by heating and pressing the first main face by the first pressing face.
-
公开(公告)号：US10824114B2
公开(公告)日：2020-11-03
申请号：US15945016
申请日：2018-04-04
Applicant: HAMAMATSU PHOTONICS K.K. , INTER-UNIVERSITY RESEARCH INSTITUTE CORPORATION NATIONAL INSTITUTES OF NATURAL SCIENCES
Inventor： Hiroto Sakai , Kenji Ohmori , Taro Ando , Nobuyuki Takei , Haruyoshi Toyoda , Yoshiyuki Ohtake , Tomoko Hyodo , Yuu Takiguchi
Abstract: A quantum simulator includes a pseudo speckle pattern generator, a main vacuum chamber, an atomic gas supply unit, a light beam generator, a photodetector, and an atom number detector. The pseudo speckle pattern generator generates a pseudo speckle pattern in the inside of the main vacuum chamber by light allowed to enter the inside of the main vacuum chamber through the second window. The pseudo speckle pattern generator includes a controller, a light source, a beam expander, a spatial light modulator, and a lens. The controller sets a modulation distribution of the spatial light modultor based on a two-dimensional pseudo random number pattern.
-
公开(公告)号：US10819078B2
公开(公告)日：2020-10-27
申请号：US16255832
申请日：2019-01-24
Inventor： Takunori Taira , Arvydas Kausas
Abstract: A method for manufacturing an optical element includes a bonding step of bonding a first and a second element portion to each other without interposing an adhesive therebetween. The bonding step includes: a first step of fixing the first and the second element portion with an intermediate layer disposed between these portion, the intermediate layer containing an element substitutable for a constituent element of a bonded portion in the first and the second element portion, the intermediate layer being colored; and a second step of integrating a part of the intermediate layer with the first and the second element portion, and making a part of the intermediate layer transparent to laser light by irradiating the intermediate layer with giant pulse laser light and causing it to be absorbed into the intermediate layer after the first step.
-
公开(公告)号：US10806585B2
公开(公告)日：2020-10-20
申请号：US15529939
申请日：2015-11-27
Inventor： Takunori Taira , Yoichi Sato , Junichi Nabekura , Hiroaki Wake
Abstract: A translucent in-vivo indwelling device with a translucent region including a rare earth doped fluorapatite.
-
-
-
-
-
-
-
-
-
Search Results
68
records
(took 0.028 seconds)
