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    Virtual image display system with stereo and multi-channel capability
    1.
    发明授权
    Virtual image display system with stereo and multi-channel capability 失效
    具有立体声和多通道能力的虚拟图像显示系统

    公开(公告)号：US3860752A

    公开(公告)日：1975-01-14

    申请号：US32705973

    申请日：1973-01-26

    Applicant: ZENITH RADIO CORP

    Inventor： ADLER ROBERT ,  KORPEL ADRIANUS

    IPC: G02B26/10 ,  G02B27/01 ,  G02F1/33 ,  H04N13/00 ,  H04N5/74 ,  H04N9/12 ,  H04N9/58

    CPC classification number: H04N13/0418 ,  G02B26/105 ,  G02B27/017 ,  G02F1/33 ,  H04N13/0436

    Abstract: This disclosure depicts a virtual image viewing system including a component to be worn by an observer in the manner of spectacles, the system being responsive to a source of video signals and associated deflection signals and to a laser beam for establishing a virtual optical image representing said video signals which is visible only to the observer. In one embodiment the system includes flying spot scanning means which is responsive to the deflection signals and which receives the laser beam for deflecting the beam in two dimensions and for converging the beam to form an unmodulated flying spot raster. A Bragg light-sound interaction cell constituting the component to be worn is responsive to the video signals and receives light from the flying spot raster for modulating the received light to develop a virtual image representing the video signals which is visible only to the observer. Other embodiments are depicted.

    Abstract translation: 本公开描述了虚拟图像观看系统，其包括以眼镜的方式由观察者佩戴的组件，该系统响应于视频信号源和相关联的偏转信号，以及激光束，用于建立代表所述视觉信号的虚拟光学图像 只有观察者可以看到的视频信号。 在一个实施例中，系统包括飞点扫描装置，其响应于偏转信号并且接收激光束以用于在两个维度上偏转光束并用于会聚光束以形成未调制的飞点光栅。 构成要穿戴的部件的布拉格光声相互作用单元响应于视频信号并且接收来自飞点光栅的光，用于调制接收到的光以形成表示仅对观察者可见的视频信号的虚拟图像。 描绘了其他实施例。

    Sound propagating apparatus
    2.
    发明授权
    Sound propagating apparatus 失效
    声音传播设备

    公开(公告)号：US3586120A

    公开(公告)日：1971-06-22

    申请号：US3586120D

    申请日：1968-07-16

    Applicant: ZENITH RADIO CORP

    Inventor： ADLER ROBERT

    IPC: G02F1/33 ,  G10K11/00

    CPC classification number: G02F1/33

    Abstract: Light-beam scanning angles obtainable from light-sound interaction are increased by introducing dispersion of the sound waves. In one general approach, the sound waves are passed through a fixed grating or otherwise through a medium which is dispersive by reason of its character. In another general approach, vibrational dispersion is obtained by launching a longitudinal wave in response to either a shear wave or an extensional wave.

    Torsional ceramic transducer
    6.
    发明授权
    Torsional ceramic transducer 失效
    扭矩陶瓷传感器

    公开(公告)号：US3900748A

    公开(公告)日：1975-08-19

    申请号：US22220172

    申请日：1972-01-31

    Applicant: ZENITH RADIO CORP

    Inventor： ADLER ROBERT

    IPC: B06B1/06 ,  H01L41/09 ,  H04R17/00 ,  H01L41/04

    CPC classification number: H04R17/00 ,  B06B1/06 ,  H01L41/0906

    Abstract: A transducer capable of large excursions in response to a signal takes the form of a coiled element of ferroelectric material. Shear stresses produced in opposite faces of the element oppose each other, so that each incremential portion of the element is subjected to a net torsional or twisting stress about its centerline, with resulting axial displacement of the coil. The element may be coiled either helically or spirally. Such axial movement may be used, for example, to drive the cone of a loudspeaker. In one general approach, a pair of electrodes, spaced side-by-side and helically wound on the outer surface of a coiled tube, are coupled across a signal source. In another form, the coiled element is composed of a pair of joined sections which carry symmetrically mirrored electrode pairs canted to the element centerline and embracing oppositely poled portions of the mating sections. The driving signals are coupled interdigitally to the electrode pairs. The transducers also may be operated in the reverse mode as generators.

    Acoustic surface wave filter
    7.
    发明授权
    Acoustic surface wave filter 失效
    声表面波滤波器

    公开(公告)号：US3600710A

    公开(公告)日：1971-08-17

    申请号：US3600710D

    申请日：1968-08-12

    Applicant: ZENITH RADIO CORP

    Inventor： ADLER ROBERT ,  VRIES ADRIAN J DE

    IPC: H03H9/145 ,  H03H9/30 ,  H03H9/32

    CPC classification number: H03H9/1455 ,  H03H9/14597

    Abstract: A body of piezoelectric material propagates acoustic surface waves. A first surface wave interaction device is actively coupled to that surface to interact with the waves. Spaced on the same surface from the first device is a second such interaction device. The interaction devices are segmented into a plurality of interjacent arrays of electrode elements and the spacing between successive electrode elements is equal to an integral multiple of one-half wavelength at the desired operating frequency. The arrays are electrically coupled in series and are disposed to effect cumulative interaction with the surface waves.

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