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    LASER-BASED SYSTEM UTILIZING MULTIPLE LASER BEAMS
    1.
    发明申请
    LASER-BASED SYSTEM UTILIZING MULTIPLE LASER BEAMS 有权

    公开(公告)号：US20170207854A1

    公开(公告)日：2017-07-20

    申请号：US15017639

    申请日：2016-02-07

    申请人： VocalZoom Systems Ltd.

    发明人： Alexander Blumkin ,  Amir Ganani ,  Tal Fishman ,  Tal Bakish

    IPC分类号： H04B10/43 ,  H04B10/50 ,  H04B10/516 ,  H04R23/00

    CPC分类号： H04B10/506 ,  H04B10/503 ,  H04R23/008 ,  H04R23/02

    摘要： A laser-based device or sensor includes: a first laser transmitter having a first self-mix carrier frequency; a second laser transmitter having a second, different, self-mix carrier frequency; a first monitor photodiode to receive a first optical signal from the first laser transmitter, and to output a first electric signal; a second monitor photodiode to receive a first optical signal from the second laser transmitter, and to output a second electric signal; an electric connection to connect together the first electric signal and the second electric signal, forming a combined electric signal; a single laser receiver to receive the combined electric signal and to generate from it a spectrum that corresponds to both (i) optical feedback of the first laser transmitter, and (ii) optical feedback of the second laser transmitter. Alternatively, a single monitor photodiode is used, receiving optical signals from multiple laser transmitters, and outputting a single electric signal to a single laser receiver.

    Passive acousto-optic modulator
    8.
    发明授权
    Passive acousto-optic modulator 失效
    被动声光调制器

    公开(公告)号：US5910855A

    公开(公告)日：1999-06-08

    申请号：US894958

    申请日：1997-09-03

    申请人： Andrew James Thomas

    发明人： Andrew James Thomas

    IPC分类号： G01H9/00 ,  H04R17/00 ,  H04R23/00 ,  H04R23/02 ,  G02F1/11 ,  G02F1/01 ,  G02F1/03 ,  H04B10/12

    CPC分类号： G01H9/006 ,  H04R23/008 ,  H04R17/00 ,  H04R23/02

    摘要： A passive acousto-optic modulator for the modulation of a light beam as a function of a variation in air pressure comprising a beam splitter arranged relative to the beam so as to produce a signal beam and reference beam, the beam splitter ideally comprising a flat interface located between two optically transparent mediums such as the end of an optic fiber located within air, the interface being arranged relative to the light modulator such that when the light beam travels through the interface, some of the light beam is able to pass through the interface to form the signal beam, the rest of the light beam being reflected back off the interface to form the reflected reference beam; a light modulator which modulates the signal beam, the light modulator comprising an approximately flat optically reflective surface capable of movement, the reflective surface being located in a position which, at rest is a predetermined distance from the beam splitter and is approximately parallel to and facing the beam splitter and a piezoelectric element, the piezoelectric element being connected to the reflective surface in such a way that when an electric potential is applied across the piezoelectric element, it causes the reflective surface to move; and conversion means to convert variations in air pressure into corresponding variations in a signal for driving the light modulator; the arrangement being such that the modulated signal beam is combined with the reference beam to produce constructive or destructive interference.

    摘要翻译： PCT No.PCT / GB96 / 00450 Sec。 371日期：1997年9月3日 102（e）1997年9月3日PCT PCT 1996年2月29日PCT公布。 WO96 / 28001 PCT出版物 日期1996年9月12日用于调制光束的无源声光调制器作为空气压力变化的函数，包括相对于光束布置的分束器，以产生信号光束和参考光束，分束器 理想地包括位于两个光学透明介质之间的平坦接口，例如位于空气中的光纤的端部，该接口相对于光调制器布置，使得当光束穿过界面时，一些光束能够 通过该接口以形成信号光束，其余的光束被反射回界面以形成反射参考光束; 光调制器，其调制信号光束，所述光调制器包括能够移动的近似平坦的光学反射表面，所述反射表面位于所述位置，所述位置与所述分束器相隔预定距离并且大致平行于并面对 分束器和压电元件，压电元件以这样的方式连接到反射表面，使得当电压跨越压电元件施加时，其使反射表面移动; 以及转换装置，用于将空气压力的变化转换成用于驱动光调制器的信号的相应变化; 该配置使得调制信号光束与参考光束组合以产生建设性或相消干涉。

    Multi-driver loudspeaker
    9.
    发明授权
    Multi-driver loudspeaker 失效
    多驱动扬声器

    公开(公告)号：US4554414A

    公开(公告)日：1985-11-19

    申请号：US565464

    申请日：1983-12-27

    申请人： William N. House

    发明人： William N. House

    IPC分类号： H04R1/24 ,  H04R23/02 ,  H04R9/06 ,  H04R17/00

    CPC分类号： H04R23/02 ,  H04R1/24

    摘要： A multi-driver loudspeaker combination includes a first transducer of the dynamic radiator type, designed to reproduce sound in the lower portion of the audio frequency range. The radiator of the first transducer includes a diaphragm. The combination also includes a second transducer designed to reproduce sound in the upper portion of the audio frequency range. A base support, which is somewhat horn-shaped, is mounted on the first transducer diaphragm, a voice coil form, or dust cap, or some combination of these, within the periphery of the first transducer diaphragm, and extends away from the first transducer. This base support terminates at an edge remote from the first transducer. The edge is in the form of a closed plane curve. The second transducer includes a diaphragm having a perimetral edge which is joined to the edge of the base support to support the second transducer from the first. This mounting structure permits orientation of the second transducer axis at an angle to the axis of the first transducer. Another multi-driver loudspeaker combination comprises the first transducer, a second transducer including a piezoelectric crystal driver, and an adhesive for gluing the piezoelectric crystal of the second transducer to the dust cap of the first transducer. Again, the axis of the second transducer can be oriented at an angle to the axis of the first transducer.

    摘要翻译： 多驱动扬声器组合包括动态散热器类型的第一传感器，被设计为在音频范围的下部再现声音。 第一换能器的散热器包括隔膜。 该组合还包括设计用于再现音频范围上部的声音的第二传感器。 在第一换能器隔膜的周边内，在第一换能器隔膜，音圈形式或防尘帽或这些的一些组合上安装有一些喇叭形的基座支撑件，并且远离第一换能器 。 该基座支撑终止于远离第一换能器的边缘。 边缘呈闭合平面曲线的形式。 第二换能器包括具有周边边缘的隔膜，该隔膜边缘连接到基座支撑件的边缘以从第一传感器支撑第二换能器。 该安装结构允许第二换能器轴线相对于第一换能器的轴线成一定角度。 另一种多驱动扬声器组合包括第一换能器，包括压电晶体驱动器的第二换能器和用于将第二换能器的压电晶体胶合到第一换能器的防尘盖的粘合剂。 再次，第二换能器的轴线可以定向成与第一换能器的轴成一角度。

    Electro-acoustic transducer
    10.
    发明授权
    Electro-acoustic transducer 失效
    电声换能器

    公开(公告)号：US4504703A

    公开(公告)日：1985-03-12

    申请号：US641416

    申请日：1984-08-16

    申请人： Ali Schneiter ,  Jean-Frederic Fluckiger ,  Anne Curchod

    发明人： Ali Schneiter ,  Jean-Frederic Fluckiger ,  Anne Curchod

    IPC分类号： H04R1/22 ,  H04R23/02

    CPC分类号： H04R23/02 ,  H04R1/22

    摘要： An electro-acoustic transducer capable of operating as an emitter and as a pick-up for acoustic waves in an ambient medium includes a cover member having an opening for communication with the ambient medium, first and second diaphragms which are spaced from each other within the cover member, the second diaphragm being capable of vibrating under the effect of acoustic waves and being disposed between the first diaphragm and the opening in the cover member, an electromagnet for causing vibrations of the first diaphragm in response to electrical excitation signals when the transducer is operating in the emitter mode, an air cushion contained in a closed chamber separating the two diaphragms or a rigid mechanical connection between the two diaphragms for communicating the vibrations of the first diaphragm to the second diaphragm, and a pair of electrodes disposed on opposite sides of the second diaphragm, which is preferably a sheet of electret, for producing an output signal in response to vibrations of the second diaphragm produced by acoustic waves which are propagated in the ambient medium when the transducer is operating in the pick-up mode.

    摘要翻译： 能够作为发射器和作为环境介质中的声波拾取器的电声换能器包括具有用于与周围介质连通的开口的盖构件，在第一和第二隔膜内彼此间隔开的第一和第二隔膜 覆盖构件，第二隔膜能够在声波的作用下振动并且设置在第一隔膜和盖构件中的开口之间;电磁体，用于当换能器为 在发射器模式下工作，包含在分离两个隔膜的闭合室中的气垫或两个隔膜之间的刚性机械连接，用于将第一隔膜的振动传递到第二隔膜，以及一对电极， 第二隔膜，其优选为一片驻极体，用于响应地产生输出信号 对于当换能器在拾取模式下操作时在环境介质中传播的由声波产生的第二隔膜的振动。