公开(公告)号：WO2007117941A1

公开(公告)日：2007-10-18

申请号：PCT/US2007/064703

申请日：2007-03-22

Applicant: SYMPHONY ACOUSTICS, INC. ,  CARR, Dustin, Wade

Inventor： CARR, Dustin, Wade

IPC: G01L9/00 ,  H04R23/00

CPC classification number: H04R23/008 ,  G01L9/0079 ,  H04R25/505

Abstract: An optical displacement sensor is disclosed that provides a optical displacement sensor that includes a optically-resonant cavity tuned to an operating wavelength without some of the disadvantages for doing so in the prior art. An embodiment of the present invention tunes an operating wavelength used with a Fabry-Perot interferometer to develop a desired relationship between the wavelength and the Fabry-Perot interferometer's initial cavity length.

Abstract translation: 公开了一种光学位移传感器，其提供光学位移传感器，该光学位移传感器包括调谐到工作波长的光学谐振腔，而没有在现有技术中这样做的一些缺点。 本发明的一个实施例调整了与法布里 - 珀罗干涉仪一起使用的工作波长，以便在波长与法布里 - 珀罗干涉仪的初始腔体长度之间形成期望的关系。

公开(公告)号：WO2007143362A3

公开(公告)日：2008-04-10

申请号：PCT/US2007069176

申请日：2007-05-17

Applicant: SYMPHONY ACOUSTICS INC ,  CARR DUSTIN WADE ,  HELM JAMES GILBERT

Inventor： CARR DUSTIN WADE ,  HELM JAMES GILBERT

IPC: G01D5/26 ,  H04R23/00

CPC classification number: G01B11/02 ,  G01B9/02004 ,  G01B2290/25 ,  G01D5/266 ,  G01H9/00 ,  G01L9/0079 ,  H04R23/008 ,  H04R25/554

Abstract: An apparatus and method for detecting multiple beams from a beamsplitter is disclosed. Some embodiments of the present invention are particularly well-suited for use in microphones, high-sensitivity pressure sensors, vibration sensors, and accelerometer applications. Some embodiments of the present invention generate a differential electrical output signal that is based on multiple detected optical signals. The differential output signal is generated in response to an environmental stimulus, such as a pressure differential or incident acoustic energy. In accordance with the illustrative embodiment, an optical displacement sensor redirects the transmitted beam back through the optically-resonant cavity with an angular offset. Due to the angular offset, the redirected beam (i.e., retransmitted beam) transits the cavity with an intra-cavity path length that corresponds to substantially full transmittance of the retransmitted beam in the absence of the environmental stimulus.

Abstract translation: 公开了一种用于检测来自分束器的多个光束的装置和方法。 本发明的一些实施例特别适用于麦克风，高灵敏度压力传感器，振动传感器和加速度计应用。 本发明的一些实施例产生基于多个检测到的光信号的差分电输出信号。 差分输出信号响应于诸如压力差或入射声能的环境刺激而产生。 根据说明性实施例，光学位移传感器将透射的光束以角度偏移重新定向通过光学谐振腔。 由于角度偏移，重定向的光束（即，重新发送的光束）以在不存在环境刺激的情况下对应于重发光束的基本上完全透射率的腔内路径长度来转移空腔。

公开(公告)号：WO2008014416A3

公开(公告)日：2008-01-31

申请号：PCT/US2007/074517

申请日：2007-07-26

Applicant: SYMPHONY ACOUSTICS, INC. ,  CARR, Dustin, Wade

Inventor： CARR, Dustin, Wade

IPC: H04R1/40

Abstract: An apparatus and method for discriminating a directional component of a propagating pressure wave using an array of operatively-coupled displacement sensors are disclosed. In accordance with the illustrative embodiment, each displacement sensor in the array comprises two parallel layers, at least one of which is movable. The output signal of each displacement sensor is based on the separation of the layers. The displacement sensors are operatively-coupled through a compressible fluid such that the response of one of the sensors to an input can cause an output signal in at least one of the other sensors. The operative-coupling of the displacement sensors amplifies relative phase information between their respective output signals, which results in improved directionality. Some embodiments of the present invention are particularly well-suited for use in microphones.

公开(公告)号：WO2008014416A2

公开(公告)日：2008-01-31

申请号：PCT/US2007074517

申请日：2007-07-26

Applicant: SYMPHONY ACOUSTICS INC ,  CARR DUSTIN WADE

Inventor： CARR DUSTIN WADE

IPC: H04R1/40

CPC classification number: H04R1/406

Abstract: An apparatus and method for discriminating a directional component of a propagating pressure wave using an array of operatively-coupled displacement sensors are disclosed. In accordance with the illustrative embodiment, each displacement sensor in the array comprises two parallel layers, at least one of which is movable. The output signal of each displacement sensor is based on the separation of the layers. The displacement sensors are operatively-coupled through a compressible fluid such that the response of one of the sensors to an input can cause an output signal in at least one of the other sensors. The operative-coupling of the displacement sensors amplifies relative phase information between their respective output signals, which results in improved directionality. Some embodiments of the present invention are particularly well-suited for use in microphones.

Abstract translation: 公开了一种用于使用可操作地耦合的位移传感器的阵列来识别传播压力波的方向分量的装置和方法。 根据说明性实施例，阵列中的每个位移传感器包括两个平行的层，其中至少一个是可移动的。 每个位移传感器的输出信号基于层的分离。 位移传感器通过可压缩流体可操作地耦合，使得传感器之一对输入的响应可以在至少一个其它传感器中产生输出信号。 位移传感器的操作耦合放大了它们各自输出信号之间的相对相位信息，这导致改进的方向性。 本发明的一些实施例特别适用于麦克风。

公开(公告)号：WO2007100957A1

公开(公告)日：2007-09-07

申请号：PCT/US2007/061633

申请日：2007-02-05

Applicant: SYMPHONY ACOUSTICS, INC. ,  CARR, Dustin, Wade

Inventor： CARR, Dustin, Wade

IPC: G01L9/00 ,  H04R23/00 ,  G01B9/02

CPC classification number: H04R23/008 ,  G01H9/006 ,  G01L9/0079

Abstract: An optical displacement sensor is disclosed that provides a high signal-to-noise ratio output signal without some of the disadvantages for doing so in the prior art. An embodiment of the present invention directs a light beam toward a Fabry-Perot interferometer and detects both the reflected and transmitted optical beams that result from interaction with the Fabry-Perot interferometer. Signal processing techniques are applied to signals based on both the reflected and transmitted beams, resulting in higher signal strength and/or reduced noise in the resulting output signal.

Abstract translation: 公开了一种光学位移传感器，其提供高信噪比输出信号，而没有在现有技术中这样做的一些缺点。 本发明的实施例将光束引向法布里 - 珀罗干涉仪，并且检测由与法布里 - 珀罗干涉仪相互作用而产生的反射和透射的光束。 信号处理技术被应用于基于反射和发射波束的信号，从而在所得到的输出信号中产生更高的信号强度和/或降低的噪声。

公开(公告)号：WO2007143362A2

公开(公告)日：2007-12-13

申请号：PCT/US2007/069176

申请日：2007-05-17

Applicant: SYMPHONY ACOUSTICS, INC. ,  CARR, Dustin, Wade ,  HELM, James, Gilbert

Inventor： CARR, Dustin, Wade ,  HELM, James, Gilbert

CPC classification number: G01B11/02 ,  G01B9/02004 ,  G01B2290/25 ,  G01D5/266 ,  G01H9/00 ,  G01L9/0079 ,  H04R23/008 ,  H04R25/554

Abstract: An apparatus and method for detecting multiple beams from a beamsplitter is disclosed. Some embodiments of the present invention are particularly well-suited for use in microphones, high-sensitivity pressure sensors, vibration sensors, and accelerometer applications. Some embodiments of the present invention generate a differential electrical output signal that is based on multiple detected optical signals. The differential output signal is generated in response to an environmental stimulus, such as a pressure differential or incident acoustic energy. In accordance with the illustrative embodiment, an optical displacement sensor redirects the transmitted beam back through the optically-resonant cavity with an angular offset. Due to the angular offset, the redirected beam (i.e., retransmitted beam) transits the cavity with an intra-cavity path length that corresponds to substantially full transmittance of the retransmitted beam in the absence of the environmental stimulus.

Abstract translation: 公开了一种从分束器检测多个光束的装置和方法。 本发明的一些实施例特别适用于麦克风，高灵敏度压力传感器，振动传感器和加速度计应用。 本发明的一些实施例产生基于多个检测到的光信号的差分电输出信号。 差分输出信号是响应于诸如压力差或入射声能的环境刺激而产生的。 根据说明性实施例，光学位移传感器通过光学谐振腔将角度偏移重定向到透射光束。 由于角度偏移，重定向的波束（即，重新发射的波束）以在没有环境刺激的情况下对应于重发波束的基本上完全透射率的腔内路径长度来转移空腔。