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    Soundproof structure body
    1.
    发明授权
    Soundproof structure body 有权

    公开(公告)号：US12067963B2

    公开(公告)日：2024-08-20

    申请号：US17232770

    申请日：2021-04-16

    Applicant: FUJIFILM Corporation

    Inventor： Akihiko Ohtsu ,  Shinya Hakuta ,  Yoshihiro Sugawara ,  Shogo Yamazoe

    IPC: G10K11/172 ,  F24F13/24 ,  G10K11/16 ,  B60R13/08

    CPC classification number: G10K11/172 ,  F24F13/24 ,  G10K11/161 ,  B60R13/08

    Abstract: In a soundproof structure body including a tubular tube body having an opening portion, and a resonance type soundproof structure, in which a phase difference θ, at an upstream of the resonance type soundproof structure, between a reflected wave in the resonance type soundproof structure and a reflected wave of a transmitted wave transmitted through the resonance type soundproof structure and reflected by the opening portion satisfies Inequation |θ−π|≤π/3 with respect to a resonance frequency of the resonance type soundproof structure. This soundproof structure body can effectively offset a reflected wave from a resonance type soundproof structure body by opening end reflection by appropriately specifying positions of the resonance type soundproof structure and the opening end portion of a duct, a tube line, or the like to improve an absorbance of a single resonance type soundproof structure.

    Soundproof structure
    3.
    发明授权
    Soundproof structure 有权

    公开(公告)号：US11741928B2

    公开(公告)日：2023-08-29

    申请号：US16929464

    申请日：2020-07-15

    Applicant: FUJIFILM Corporation

    Inventor： Shinya Hakuta ,  Shogo Yamazoe

    IPC: G10K11/172 ,  G10K11/168

    CPC classification number: G10K11/172 ,  G10K11/168

    Abstract: Provided is a soundproof structure that is small and light and can reduce a noise with a high specific frequency of a sound source at a plurality of frequencies at the same time. The soundproof structure has a membrane-like member, a plate-like member that is disposed to face the membrane-like member and in which at least one through-hole is formed, and a support that is formed of a rigid body and supports the plate-like member and the membrane-like member, in which the membrane-like member is supported by the support so as to perform membrane vibration, in which a rear surface space is provided between the membrane-like member and the plate-like member, in which a first space is provided on a side opposite to the rear surface space with the plate-like member sandwiched therebetween, in which the membrane-like member, the support, the plate-like member, and the rear surface space form a first sound absorbing portion that absorbs a sound by membrane vibration, in which the plate-like member, the support, and the first space form a second sound absorbing portion that absorbs a sound by Helmholtz resonance, and in which assuming that a fundamental frequency of membrane vibration of the membrane-like member in a case where the plate-like member is regarded as a rigid body in which the through-hole is not formed in the first sound absorbing portion is fm1 and a fundamental frequency of Helmholtz resonance of the second sound absorbing portion is fh1, fm1

    Soundproof structure
    4.
    发明授权
    Soundproof structure 有权

    公开(公告)号：US11332926B2

    公开(公告)日：2022-05-17

    申请号：US16284424

    申请日：2019-02-25

    Applicant: FUJIFILM Corporation

    Inventor： Akihiko Ohtsu ,  Shinya Hakuta ,  Shogo Yamazoe

    IPC: E04B1/84 ,  G10K11/172 ,  E01F8/00 ,  G10K11/175 ,  G10K11/162 ,  E04B1/82

    Abstract: There is provided a soundproof structure capable of obtaining a sufficient soundproofing effect by suppressing the leaking of sound due to a diffraction phenomenon in a partition member used for soundproofing. A soundproof unit, which has a frame body having an opening portion and a film that is disposed so as to cover the opening portion and vibrates according to a sound incident on the film, and a partition member, to which one or more soundproof units are attached, are provided.

    Soundproof structure
    5.
    发明授权
    Soundproof structure 有权

    公开(公告)号：US10902835B2

    公开(公告)日：2021-01-26

    申请号：US16541403

    申请日：2019-08-15

    Applicant: FUJIFILM Corporation

    Inventor： Akihiko Ohtsu ,  Shogo Yamazoe ,  Shinya Hakuta ,  Yoshihiro Sugawara

    IPC: G10K11/172 ,  G10K11/04 ,  E04B1/82 ,  E04B1/84 ,  G10K11/168 ,  G10K11/16 ,  G10K11/02

    Abstract: There is provided a soundproof structure that is small and has high soundproofing performance with respect to sound in a low frequency band.
    At least one soundproof cell including a frame having a hole portion and a film fixed to the frame is provided. The film has a surface density distribution. Assuming that a shortest line segment length between high surface density regions and between the high surface density regions and end portions of the hole portions is Δd, a longest line segment length between the end portions of the hole portions is L [m], a Young's modulus of a material of the low surface density region is E [Gpa], an average film thickness of the low surface density region is h [m], and a maximum surface density and a minimum surface density of the film are ρmax and ρmin, a parameter X in the following Equation (1) satisfies the following Inequality (2). X=Eh2/(ρmax/ρmin)[N]  (1) (Δd/L−0.025)/(0.06)[N]≤X[N]≤10 [N]  (2)

    SOUNDPROOF STRUCTURE
    6.
    发明申请
    SOUNDPROOF STRUCTURE 审中-公开

    公开(公告)号：US20200005757A1

    公开(公告)日：2020-01-02

    申请号：US16541403

    申请日：2019-08-15

    Applicant: FUJIFILM Corporation

    Inventor： Akihiko OHTSU ,  Shogo Yamazoe ,  Shinya Hakuta ,  Yoshihiro Sugawara

    IPC: G10K11/172 ,  G10K11/168 ,  E04B1/84

    Abstract: There is provided a soundproof structure that is small and has high soundproofing performance with respect to sound in a low frequency band.At least one soundproof cell including a frame having a hole portion and a film fixed to the frame is provided. The film has a surface density distribution. Assuming that a shortest line segment length between high surface density regions and between the high surface density regions and end portions of the hole portions is Δd, a longest line segment length between the end portions of the hole portions is L [m], a Young's modulus of a material of the low surface density region is E [Gpa], an average film thickness of the low surface density region is h [m], and a maximum surface density and a minimum surface density of the film are ρmax and ρmin, a parameter X in the following Equation (1) satisfies the following Inequality (2). X=Eh2/(ρmax/ρmin) [N]  (1) (Δd/L−0.025)/(0.06) [N]≤X [N]≤10 [N]  (2)

    Optical member and method for producing same
    9.
    发明授权
    Optical member and method for producing same 有权
    光学构件及其制造方法

    公开(公告)号：US09459379B2

    公开(公告)日：2016-10-04

    申请号：US14028992

    申请日：2013-09-17

    Applicant: FUJIFILM Corporation

    Inventor： Shinya Hakuta ,  Shinichiro Sonoda ,  Shigenori Yuuya

    IPC: G02B27/00 ,  G02B1/11 ,  G02B1/118 ,  G02B1/12 ,  B29D11/00

    CPC classification number: G02B1/11 ,  B29D11/00009 ,  G02B1/118 ,  G02B1/12

    Abstract: Provided is an optical member, including: a substrate having an at least partially curved surface; a concave-convex structure at an outermost surface, the concave-convex structure being prepared by hydrothermal treatment of a layer formed by gas-phase deposition of at least one of simple aluminum and a compound containing aluminum on the substrate; and a dielectric layer formed by gas-phase deposition between the substrate and the concave-convex structure.

    Abstract translation: 提供一种光学构件，包括：具有至少部分曲面的基板; 在最外表面的凹凸结构，所述凹凸结构通过水热处理在所述基板上通过气相沉积简单铝和含铝化合物形成的层来制备; 以及在基板和凹凸结构之间通过气相沉积形成的电介质层。

    Acoustic system
    10.
    发明授权
    Acoustic system 有权

    公开(公告)号：US11869470B2

    公开(公告)日：2024-01-09

    申请号：US17232835

    申请日：2021-04-16

    Applicant: FUJIFILM Corporation

    Inventor： Shinya Hakuta ,  Yoshihiro Sugawara ,  Akihiko Ohtsu ,  Shogo Yamazoe

    IPC: G10K11/172 ,  F24F13/24 ,  G10K11/16

    CPC classification number: G10K11/161 ,  F24F13/24 ,  G10K11/172

    Abstract: An acoustic system includes a duct that has a function of causing a fluid to flow therein and has a tubular shape, an internal sound source that is disposed inside the duct on an upstream side or at an outer peripheral portion of the duct, which communicates with an inside of the duct on the upstream side, or an external sound source that is on an outside from an end portion of the duct, and a membrane-shaped member that is formed as a part of a wall of the duct and vibrates in response to sound. A structure including the membrane-shaped member and a rear surface closed space thereof causes acoustic resonance to occur, transmits the acoustic resonance from the sound source into the duct, and suppresses sound radiated from the other end portion of the duct on a downstream side. The external sound source is at a distance within a wavelength at a frequency of the acoustic resonance on the outside from the end portion of the duct. In the acoustic system, as a small membrane-type resonance structure is disposed in a flow passage horizontal direction, wind does not directly hit a membrane surface perpendicularly, and since the acoustic system does not have a through hole or a hole, wind noise can be eliminated.

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