公开(公告)号：US20240183576A1

公开(公告)日：2024-06-06

申请号：US18442971

申请日：2024-02-15

Applicant: FUJIFILM Corporation

Inventor： Shinya HAKUTA ,  Shogo YAMAZOE ,  Yoshihiro SUGAWARA ,  Yuichiro ITAI

IPC: F24F13/24

CPC classification number: F24F13/24 ,  F24F2013/242 ,  F24F2013/245

Abstract: A silencer for a ventilation passage effectively deadens sound having a broad frequency band while having a compact structure.
A silencer for a ventilation passage according to an embodiment of the present invention is a silencer for a ventilation passage that includes a housing and deadens sound in a ventilation passage, and an internal space of the housing forms a part of the ventilation passage. The silencer for a ventilation passage includes an inlet opening that is positioned on one end side of a part of the ventilation passage in the housing, an outlet opening that is positioned on the other end side of a part of the ventilation passage in the housing, a sound absorbing member that is housed in the housing, and a vibration portion that is provided on the housing and reduces sound passing through the ventilation passage.

公开(公告)号：US20240011652A1

公开(公告)日：2024-01-11

申请号：US18469657

申请日：2023-09-19

Applicant: FUJIFILM Corporation

Inventor： Shinya HAKUTA ,  Shogo YAMAZOE ,  Yoshihiro SUGAWARA ,  Yuichiro ITAI

IPC: F24F7/04 ,  G10K11/16

CPC classification number: F24F7/04 ,  G10K11/16

Abstract: To effectively reduce a low-frequency noise resulting from vibration of a peripheral wall of a ventilation path.
The present invention provides a ventilation path with a soundproof structure including a ventilation path that includes an open end and a soundproof structure against a sound emitted from the ventilation path. The soundproof structure includes a vibration suppression portion that is provided on a surface of a peripheral wall surrounding the ventilation path, and assuming that m and n are natural numbers of 4 or less, λ is a wavelength of a sound of which a frequency coincides with an m-th natural frequency of the peripheral wall alone, and L1 is a distance from the open end on a virtual line extending through a central position of a cross section of each portion of the ventilation path, the cross section intersecting a direction in which the ventilation path extends, the vibration suppression portion is present in an area at which a distance L1 is equal to or greater than (4n−3)/×λ/8 and equal to or smaller than (4n−1)×λ/8.

公开(公告)号：US20220389938A1

公开(公告)日：2022-12-08

申请号：US17886556

申请日：2022-08-12

Applicant: FUJIFILM Corporation

Inventor： Shinya HAKUTA ,  Shogo YAMAZOE ,  Yoshihiro SUGAWARA ,  Akihiko OHTSU

IPC: F04D29/66 ,  F04D19/00 ,  F04D29/54

Abstract: An axial fan that includes a casing having an inner space that penetrates in one direction, and a rotor blade disposed in the inner space of the casing, and a silencer that is disposed at a position connected to the inner space of the axial fan are provided, in which the axial fan has a sound pressure distribution having a position at which a sound pressure is high and a position at which the sound pressure is low in a circumferential direction in the inner space during driving, and the silencer is disposed at the position of the axial fan in the circumferential direction at which the sound pressure is high and is not disposed at the position at which the sound pressure is low.

公开(公告)号：US20210233506A1

公开(公告)日：2021-07-29

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 ,  G10K11/16 ,  F24F13/24

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.

公开(公告)号：US20190362699A1

公开(公告)日：2019-11-28

申请号：US16534429

申请日：2019-08-07

Applicant: FUJIFILM Corporation

Inventor： Shinya HAKUTA ,  Shogo YAMAZOE ,  Akihiko OHTSU

IPC: G10K11/172 ,  E04B1/84 ,  G10K11/162

Abstract: Provided are a soundproof structure and an opening structure which is easy to be manufactured, has a light weight, and is capable of absorbing sound in a wide frequency bandwidth. The soundproof structure includes a tubular member and a film member arranged so as to block a hollow portion of the tubular member. Assuming that a wavelength corresponding to a resonance frequency in a single film vibration element of the film member is λa, lengths from a position at which the film member is attached to two opened end surfaces of the tubular member are L1 and L2, an opened end correction length is δ, and n is an integer of 0 or more, at least one of (λa/4−λa/8)+n×λa/2−δ≤L1≤(λa/4+λa/8)+n×λa/2−δ or (λa/4−λa/8)+n×λa/2−δ≤L2≤(λa/4+λa/8)+n×λa/2−δ is satisfied.

公开(公告)号：US20140361330A1

公开(公告)日：2014-12-11

申请号：US14465354

申请日：2014-08-21

Applicant: FUJIFILM Corporation

Inventor： Shinya HAKUTA

IPC: H01L33/46 ,  H01L33/60

CPC classification number: H01L33/46 ,  H01L33/10 ,  H01L33/30 ,  H01L33/60

Abstract: A semiconductor light emitting element that outputs emitted light having a predetermined emitted light peak wavelength λ includes: at least a substrate; a lower distributed Bragg reflector layer provided on the substrate; and a light emitting layer provided on the lower distributed Bragg reflector layer. At least one phase changing layer having a thickness of mλ/2n (wherein n is the refractive index of the phase changing layer, and m is an integer 1 or greater) is provided within the lower distributed Bragg reflector layer.

Abstract translation: 输出具有预定发射的光峰值波长λ的发射光的半导体发光元件至少包括基板; 设置在基板上的下分布布拉格反射层; 以及设置在下分布布拉格反射层上的发光层。 至少一个具有mλ/ 2n（其中n是相变层的折射率，m是1或更大的整数）的相变层设置在下分布布拉格反射器层内。

公开(公告)号：US20140319571A1

公开(公告)日：2014-10-30

申请号：US14330457

申请日：2014-07-14

Applicant: FUJIFILM Corporation

Inventor： Shinya HAKUTA ,  Shinichiro SONODA

IPC: H01L33/46

CPC classification number: H01L33/46 ,  H01L33/08 ,  H01L33/10 ,  H01L33/105 ,  H01S5/18383

Abstract: In a surface emission-type semiconductor light-emitting element including a DBR layer, a variation in light intensity due to a temperature change in the formation of a large number of elements manufactured from one wafer is suppressed while maintaining a light intensity enhancement effect. In the semiconductor light-emitting element that outputs emitted light having a predetermined emission peak wavelength λ, including at least a substrate 10, a lower distributed Bragg reflective layer 12 provided on the substrate 10, and a light-emitting layer 20 provided on a lower distributed Bragg reflective layer 12, the light-emitting layer 20 includes one or more sets of two active layers 22 arranged at a distance of (1+2m)λ/4n in an inactive layer 21, λ, is the emission peak wavelength, n is a refractive index of the light-emitting layer 20, and m is an integer of 0 or greater.

Abstract translation: 在包括DBR层的表面发射型半导体发光元件中，抑制由一个晶片制造的大量元件的形成引起的温度变化引起的光强度的变化，同时保持光强度增强效果。 在输出具有预定发光峰值波长λ的发射光的半导体发光元件中，至少包括衬底10，设置在衬底10上的下分布式布拉格反射层12和设置在衬底10上的发光层20 分布式布拉格反射层12，发光层20包括在非活性层21中以（1 + 2m）λ/ 4n的距离布置的一组或多组两个有源层22，λ是发射峰值波长，n 是发光层20的折射率，m是0以上的整数。

公开(公告)号：US20130182343A1

公开(公告)日：2013-07-18

申请号：US13785897

申请日：2013-03-05

Applicant: FUJIFILM CORPORATION

Inventor： Masayuki NAYA ,  Shinya HAKUTA

IPC: G02B17/00

CPC classification number: G02B17/00 ,  B82Y20/00 ,  G01N21/648 ,  G01N21/658 ,  Y10S977/834

Abstract: An optical field enhancement device which includes a transparent substrate having a transparent fine uneven structure on a surface and a metal film formed on a surface of the fine uneven structure on the surface of the substrate and allows projection of excitation light and detection of detection light either from a front surface side of the metal film or from a back surface side of the transparent substrate.

Abstract translation: 一种光场增强装置，其包括在表面上具有透明微细凹凸结构的透明基板和形成在基板表面上的微细凹凸结构的表面上的金属膜，并且允许激发光的投射和检测光的检测 从金属膜的表面侧或透明基板的背面侧。

公开(公告)号：US20250003631A1

公开(公告)日：2025-01-02

申请号：US18885817

申请日：2024-09-16

Applicant: FUJIFILM Corporation

Inventor： Shinya HAKUTA ,  Shogo YAMAZOE ,  Yuichiro ITAI ,  Yoshihiro SUGAWARA

IPC: F24F13/24

Abstract: A ventilation type silencer includes a ventilation channel in which at least a part of a side wall of a flow channel of a gas is formed of a porous sound absorbing material, in which a flow resistance of the sound absorbing material is 1000 Rayls/m or more, porosity of the sound absorbing material on at least a flow channel surface side is 0.9 or less or permeability thereof is 3.0×10−9 m2 or less, and a minimum flow channel width on a cross section perpendicular to a flow direction of the gas in the ventilation channel is 100 mm or less. As a result, the ventilation type silencer is provided, which includes the porous sound absorbing material that can be appropriately selected for the flow channel of the gas in accordance with hydrodynamic characteristics of the sound absorbing material in a case in which the porous sound absorbing material is used in at least a part of the flow channel, that can suppress a pressure loss, and that can reduce a wind noise.

公开(公告)号：US20240393008A1

公开(公告)日：2024-11-28

申请号：US18796970

申请日：2024-08-07

Applicant: FUJIFILM Corporation

Inventor： Shogo YAMAZOE ,  Tomohiro TAKAHASHI ,  Shinya HAKUTA ,  Yuichiro ITAI ,  Yoshihiro SUGAWARA

IPC: F24F13/24

Abstract: There is provided a wind duct with a silencer that can efficiently reduce sound propagated to a blowing target in consideration of noise generated in a wind duct during blowing.
The wind duct with a silencer of the present invention includes the wind duct that is connected to a blowing source and a silencer that reduces sound released from an exit of the wind duct. A frequency of a primary silencing peak of the silencer is lower than a frequency at which intensity of sound generated in the wind duct due to blowing in the wind duct is maximum.