公开(公告)号：US09014565B2

公开(公告)日：2015-04-21

申请号：US13872213

申请日：2013-04-29

Applicant: Panasonic Corporation

Inventor： Ushio Sangawa ,  Takuya Iwamoto ,  Yuriko Kaneko ,  Masahiko Hashimoto

IPC: H04B10/112 ,  H04R23/00 ,  H04B10/114

CPC classification number: H04R23/008 ,  H04B10/114 ,  H04R2410/00

Abstract: An optical microphone includes: a light source; a first polarizer for allowing linearly-polarized light, of light output from the light source, to pass therethrough; a second polarizer for allowing linearly-polarized light having a different polarization plane from the first polarizer to pass therethrough; a sound-receiving section including an acoustic medium having a smaller sound velocity than the air, wherein an acoustic signal propagates through the acoustic medium, the sound-receiving section being arranged so that the linearly-polarized light from the first polarizer passes through the acoustic medium and enters the second polarizer; and a photodetector for converting an intensity of light having passed through the second polarizer to an electric signal, wherein between the first polarizer and the second polarizer, the linearly-polarized light having passed through the first polarizer is given different phase shifts in two orthogonal directions which are each different from a polarization direction.

Abstract translation: 光学麦克风包括：光源; 用于允许从光源输出的光的线性偏振光通过的第一偏振器; 用于允许具有与第一偏振器不同的偏振面的线偏振光通过的第二偏振器; 声音接收部分，其包括具有比空气更小的声速的声学介质，其中声学信号通过声学介质传播，声音接收部分被布置成使得来自第一偏振器的线性偏振光通过声学 介质并进入第二偏振器; 以及光电检测器，用于将通过第二偏振器的光的强度转换为电信号，其中在第一偏振器和第二偏振器之间，通过第一偏振器的线偏振光在两个正交方向上被赋予不同的相移 它们各自不同于偏振方向。

公开(公告)号：US08652432B2

公开(公告)日：2014-02-18

申请号：US13965526

申请日：2013-08-13

Applicant: Panasonic Corporation

Inventor： Yuriko Kaneko ,  Takuya Iwamoto ,  Ushio Sangawa ,  Masahiko Hashimoto ,  Norihisa Mino

IPC: C01B33/12

CPC classification number: C01B33/126 ,  C01B33/1585 ,  C01B33/163 ,  Y02P20/544

Abstract: A method of producing a porous silica material includes: preparing a raw material solution containing silicon alkoxides including diisobutyldimethoxysilane and tetramethoxysilane in such a mass ratio that a mass of the diisobutyldimethoxysilane is 0.25 or more and 1 or less per mass of the tetramethoxysilane, and a solvent; obtaining a wet gel by adding, to the raw material solution, an aqueous solution containing a catalyst for promoting hydrolysis and condensation polymerization of the silicon alkoxides, the aqueous solution having a pH of 8.9 or more and 11.3 or less; washing the wet gel; and drying the washed wet gel under supercritical conditions.

Abstract translation: 一种生产多孔二氧化硅材料的方法包括：以每质量四异丙氧基硅烷为基准，二异丁基二甲氧基硅烷的质量为0.25以上且1质量％以下的质量比，制备含有二烷基二甲氧基硅烷和四甲氧基硅烷的硅醇的原料溶液， ; 通过向原料溶液中加入含有促进硅烷醇盐的水解和缩聚的催化剂的水溶液，pH为8.9以上至11.3以下的水溶液，得到湿凝胶; 洗涤湿凝胶; 并在超临界条件下干燥洗涤的湿凝胶。

公开(公告)号：US08948603B2

公开(公告)日：2015-02-03

申请号：US13752817

申请日：2013-01-29

Applicant: Panasonic Corporation

Inventor： Takuya Iwamoto ,  Masahiko Hashimoto ,  Ushio Sangawa ,  Yuriko Kaneko

IPC: H04R23/00 ,  G01H9/00

CPC classification number: H04R23/008 ,  G01H9/00

Abstract: An optical microphone includes: a propagation medium portion; a light source to output a light wave passing through the propagation medium portion across the acoustic wave propagating through the propagation medium portion; a reflecting section to retroreflect the light wave having passed through the propagation medium portion; and a photoelectric conversion section to receive the light wave having been reflected by the reflecting section and passed through the propagation medium portion to output an electric signal. 0th-order, +1st-order and −1st-order diffracted light waves are respectively produced on outward and return paths, by virtue of a refractive index distribution across the propagation medium portion caused by the propagation of the acoustic wave therethrough. The photoelectric conversion section detects interference light between the +1st-order or −1st-order diffracted light wave of the outward path and the −1st-order or +1st-order diffracted light wave of the return path.

Abstract translation: 一种光学麦克风包括：传播介质部分; 光源，其通过传播介质部分传播的声波输出通过传播介质部分的光波; 反射部，用于回射通过传播介质部分的光波; 以及光电转换部，接收被反射部反射并通过传播介质部的输出电信号的光波。 由于由声波的传播引起的传播介质部分的折射率分布，分别在向外和返回路径上产生0级，+ 1级和-1级衍射光波。 光电转换部检测向外路径的+ 1级或-1级衍射光波与返回路径的-1级或+ 1级衍射光波之间的干涉光。

公开(公告)号：US09057008B2

公开(公告)日：2015-06-16

申请号：US13919061

申请日：2013-06-17

Applicant: Panasonic Corporation

Inventor： Yuriko Kaneko ,  Takuya Iwamoto ,  Ushio Sangawa ,  Masahiko Hashimoto ,  Norihisa Mino

IPC: C09K3/00 ,  H04R23/00 ,  C01B33/159 ,  B82Y30/00

CPC classification number: C09K3/00 ,  B82Y30/00 ,  C01B33/159 ,  C01P2004/50 ,  C01P2004/64 ,  C01P2006/10 ,  C01P2006/82 ,  H04R23/008 ,  Y10T428/268

Abstract: A porous silica material disclosed in the present application is a porous silica material in which a plurality of silica particles are connected to one another three-dimensionally, wherein: a density of the porous silica material is less than 220 kg/m3; a particle diameter of the silica particles is 3.5 nm or more; and the water content of the porous silica material is 8 wt % or less.

Abstract translation: 本申请中公开的多孔二氧化硅材料是三维二氧化硅颗粒彼此连接的多孔二氧化硅材料，其中：多孔二氧化硅材料的密度小于220kg / m 3; 二氧化硅粒子的粒径为3.5nm以上; 多孔二氧化硅材料的含水量为8重量％以下。

公开(公告)号：US09197969B2

公开(公告)日：2015-11-24

申请号：US13950961

申请日：2013-07-25

Applicant: Panasonic Corporation

Inventor： Takuya Iwamoto ,  Kazuo Yokoyama ,  Masahiko Hashimoto ,  Ushio Sangawa ,  Yuriko Kaneko

IPC: H04B10/12 ,  H04B10/00 ,  H04R23/00

CPC classification number: H04R23/008 ,  Y10T428/24008

Abstract: An optical microphone includes: an acousto-optic medium section having a pair of principal surfaces and at least one lateral surface provided therebetween; a restraint section which is in contact with the at least one lateral surface for preventing a shape change of the acousto-optic medium section; and a light emitting section for emitting a light wave so as to propagate through the acousto-optic medium section between the pair of principal surfaces. The pair of principal surfaces are in contact with an environmental fluid through which an acoustic wave to be detected is propagating and are capable of freely vibrating, and an optical path length variation of a light wave propagating through the acousto-optic medium section, which is caused by the acoustic wave that comes into the acousto-optic medium section from at least one of the pair of principal surfaces and propagates through the acousto-optic medium section, is detected.

Abstract translation: 光学麦克风包括：具有一对主表面和设置在它们之间的至少一个侧表面的声光介质部分; 限制部，其与所述至少一个侧面接触，用于防止所述声光介质部的形状变化; 以及用于发射光波以便在所述一对主表面之间传播通过声光介质部分的发光部分。 一对主表面与待检测的声波正在传播并能够自由振动的环境流体接触，并且通过声光介质部分传播的光波的光程长度变化是 由从一对主表面中的至少一个进入声光介质部分并通过声光介质部分传播的声波引起。