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公开(公告)号：US20240308697A1
公开(公告)日：2024-09-19
申请号：US18584242
申请日：2024-02-22
Applicant: Hitachi, Ltd.
Inventor： Makoto ITO , Tsukasa FUNANE , Koichi WATANABE , Yosuke TANABE , Hisatoshi KIMURA
Abstract: The space structure control system includes: a space structure; an artificial satellite connected to the space structure; and a propulsion device installed on the artificial satellite and configured to control an orbit and an attitude of the artificial satellite, in which the space structure includes a film-like structure, a solar reflectance control device that controls a spatial pattern of a solar reflectance in a reflecting mirror provided in the film-like structure, and a shape retaining device that is connected to the film-like structure, the propulsion device rotates the film-like structure to generate a centrifugal force, the solar reflectance control device controls a solar reflectance in the reflecting mirror to control a solar radiation pressure to be applied to the reflecting mirror, a three-dimensional shape of the film-like structure is controlled based on the centrifugal force generated by the rotation of the film-like structure and the solar radiation pressure, and the shape of the film-like structure is retained or stabilized by the shape retaining device.
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公开(公告)号：US20130215422A1
公开(公告)日：2013-08-22
申请号：US13735092
申请日：2013-01-07
Applicant: Hitachi, Ltd.
Inventor： Shigeharu KIMURA , Masataka SHIRAI , Koichi WATANABE
Abstract: A signal is amplified by making a CARS beam from an observed body and a reference beam which is a portion of a super continuum beam and has a frequency of ωAS=2ωP−ωST interfere with each other and taking out the signal from an interference beam of the CARS beam and the reference beam.
Abstract translation: 通过从观测体进行CARS波束的信号和作为超连续波束的一部分且具有ωga= 2omega -P-ωgaST的频率的参考波束相互干扰并从干扰波束中取出信号来放大信号 CARS光束和参考光束。
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公开(公告)号：US20250002177A1
公开(公告)日：2025-01-02
申请号：US18594564
申请日：2024-03-04
Applicant: Hitachi, Ltd.
Inventor： Yosuke TANABE , Tsukasa FUNANE , Koichi WATANABE , Hisatoshi KIMURA , Makoto ITO
Abstract: A stereostructure spacecraft of the present invention comprises multiple deployable beam members, multiple tension members, and a spacecraft for storing the deployable beam members and the tension members. The stereostructure spacecraft is formed by deploying the deployable beam members and the tension members around the spacecraft. The deployable beam members stored in the spacecraft are deployed and arranged equidistantly in directions of multiple rotational symmetry axes, the rotational symmetry axes being rotational symmetry axes of a virtual polyhedron that is formed to have a substantial center of the spacecraft as an origin. The tension members support two end portions of two adjacent deployable beam members with tension. The respective end portions of the deployable beam members are simultaneously supported by three or more of the tension members.
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4.发明公开公开(公告)号：US20240340078A1
公开(公告)日：2024-10-10
申请号：US18596139
申请日：2024-03-05
Applicant: Hitachi, Ltd.
Inventor： Hisatoshi KIMURA , Tsukasa FUNANE , Yosuke TANABE , Makoto ITO , Koichi WATANABE
CPC classification number: H04B7/18521 , B64G1/40 , H04B7/18526 , H04W64/006
Abstract: An artificial satellite system according to the present invention includes first and second artificial satellites. An antenna of the first satellite transmits a radio wave (transmission signal) to the second satellite. An antenna of the second satellite receives the transmission signal. A software defined radio of the second satellite generates a signal having the same frequency and phase as the transmission signal has. The antenna of the second satellite transmits a radio wave of a signal generated by the second satellite to the first satellite. The antenna of the first satellite receives the radio wave (reception signal) transmitted by the second satellite. A data processing device of the first satellite determines a relative distance between the first and second satellites by using the difference between a transmission time of the transmission signal and a reception time of the reception signal and the phase difference between the transmission and reception signals.
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5.发明公开公开(公告)号：US20240162760A1
公开(公告)日：2024-05-16
申请号：US18507319
申请日：2023-11-13
Applicant: Hitachi, Ltd.
Inventor： Makoto ITO , Koichi WATANABE , Tsukasa FUNANE , Yosuke TANABE , Hisatoshi KIMURA , Keiji WATANABE
Abstract: An electric-power conversion device receives an electromagnetic wave transmitted from space and converts the electromagnetic wave into electric power. The electric-power conversion device includes: an electric-power conversion portion for receiving an electromagnetic wave transmitted from space and converting the electromagnetic wave into electric power; a propelling device or driving device for moving the electric-power conversion device; a positioning device for determining the position of the electric-power conversion device; a control device for controlling the propelling device or the driving device based on information about the position and the electric power received by the electric-power conversion portion; and an electric-power supply device for supplying the electric power received by the electric-power conversion portion to an electric system.
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Patent Agency Ranking
公开(公告)号：US20230412124A1
公开(公告)日：2023-12-21
申请号：US18112752
申请日：2023-02-22
Applicant: Hitachi, Ltd.
Inventor： Tsukasa FUNANE , Koichi WATANABE , Yosuke TANABE , Jun HAYAKAWA
IPC: H02S40/44
Abstract: Provided is a power receiving system having an increased energy conversion efficiency. The power receiving system according to the present disclosure includes a power converter that receives electromagnetic waves transmitted from space and converts the electromagnetic waves into electric power; a thermal energy converter that is disposed adjacent to the power converter and converts thermal energy generated in the power converter; and a controller that controls operation of the thermal energy converter based on an energy intensity distribution of the electromagnetic waves.
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7.发明申请公开(公告)号：US20170364778A1
公开(公告)日：2017-12-21
申请号：US15540362
申请日：2015-05-19
Applicant: HITACHI, LTD.
Inventor： Takao WATANABE , Shigeki MORI , Ryo IMAI , Koichi WATANABE
CPC classification number: G06K15/1276 , B23K26/0006 , B23K26/032 , B23K26/0624 , B23K26/0853 , B23K26/53 , B23K26/55 , B23K26/702 , B23K2103/54 , B41M3/00 , B41M5/26 , G06K1/121 , G06K15/023 , G06K15/1271 , G06K19/06037 , G06K19/06178
Abstract: It is an object of the present invention to improve visibility for observation with naked eyes or for camera shooting without spoiling the appearance during marking inside a. transparent medium using a laser. By irradiating an inside of a transparent medium with a laser, the present invention forms a micro-denatured region in each of a first layer and a second layer inside the medium. The micro-denatured regions in the respective layers are arranged out of alignment with each other on a two-dimensional plane (refer to FIG. 1).
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公开(公告)号：US20170219390A1
公开(公告)日：2017-08-03
申请号：US15106885
申请日：2014-02-28
Applicant: HITACHI, LTD.
Inventor： Yoshitaka MORIMOTO , Takahiro KUROKAWA , Koichi WATANABE
IPC: G01D5/353
CPC classification number: G01D5/35316
Abstract: It is made possible to amplify signal light of an optical fiber sensor and to perform measurement in a long distance. At least one of a plurality of core wires in a multicore optical fiber is used as a signal-light propagating core wire 133 and the other is used as a reference-light propagating core wire 134. Also, homodyne detection of signal light and reference light reflected by an FBG sensor unit 132 arranged in each measurement point is performed. Thus, signal light is amplified. In order to make a difference between optical path lengths of the signal light and the reference light equal to or smaller than a coherence length, an optical path-length adjustment unit including a piezoelectric element or the like is arranged in an optical path of the reference light.
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公开(公告)号：US20240322752A1
公开(公告)日：2024-09-26
申请号：US18678131
申请日：2024-05-30
Applicant: Hitachi, Ltd.
Inventor： Tsukasa FUNANE , Koichi WATANABE , Yosuke TANABE , Jun HAYAKAWA
Abstract: Provided is a power receiving system having an increased energy conversion efficiency. The power receiving system according to the present disclosure includes a power converter that receives electromagnetic waves transmitted from space and converts the electromagnetic waves into electric power; a thermal energy converter that is disposed adjacent to the power converter and converts thermal energy generated in the power converter; and a controller that controls operation of the thermal energy converter based on an energy intensity distribution of the electromagnetic waves.
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公开(公告)号：US20160365107A1
公开(公告)日：2016-12-15
申请号：US15106879
申请日：2014-01-17
Applicant: HITACHI, LTD.
Inventor： Ryo IMAI , Koichi WATANABE , Manabu SHIOZAWA
IPC: G11B7/128 , G11B7/1372 , G11B7/127 , G11B7/0065 , G11B7/007
CPC classification number: G11B7/128 , G11B7/0033 , G11B7/0045 , G11B7/0065 , G11B7/00772 , G11B7/127 , G11B7/1372 , G11B2007/0009 , G11C13/04
Abstract: In recording technologies for batch formation of a plurality of recording bits in a recording medium by forming a plurality of optical spots using an ultrashort pulse laser and a spatial optical modulator, the hatch recordable hit number has an upper limit, resulting in restricted recording speed. The intensity of the optical spot is corrected to increase the batch recordable bit number for increasing the recording speed.
Abstract translation: 在通过使用超短脉冲激光器和空间光学调制器形成多个光点来在记录介质中批量形成多个记录位的记录技术中，可开口打印数量具有上限，导致记录速度受限。 校正光点的强度以增加用于提高记录速度的批次可记录位数。
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