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    Real time three dimensional television system
    2.
    发明授权
    Real time three dimensional television system 失效
    实时三维电视系统

    公开(公告)号：US3566021A

    公开(公告)日：1971-02-23

    申请号：US3566021D

    申请日：1968-11-29

    Applicant: BELL TELEPHONE LABOR INC

    Inventor： JAKES WILLIAM C JR

    IPC: G01S17/89 ,  H04N9/54

    CPC classification number: G01S17/89 ,  G03H2001/0088

    Abstract: This disclosure relates to a television system that utilizes wave front reconstruction techniques to provide a real time three-dimensional image at the receiving end of the system, with the image changing in perspective as the object and/or observer moves. The coherent light from a laser is first modulated at a frequency in the microwave range and one sideband of the coherent light is filtered out and used to illuminate an object scene. The light reflected from the object scene impinges on a photodetector while a narrow reference beam of coherent light raster scans the photodetector to thereby generate a signal which is modulated in phase and amplitude in accordance with the interference pattern formed on the photodetector. The signal carrying the modulated phase and amplitude information is then transmitted to a remote receiver. At the received end, the phase and amplitude modulated information is recovered and stored, a frame at a time, in respective storage devices. At the end of a complete frame the stored information is read out and respectively applied to an array of phase and amplitude optical modulators. Also, at the end of a complete frame received information, a second laser at the receiver is pulsed with the light therefrom directed toward said array. In this manner, an image of the original object is obtained at the receiver. The described operation is continued a frame at a time.

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