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    Sonic transducer
    3.
    发明授权
    Sonic transducer 失效
    SONIC传感器

    公开(公告)号：US3594717A

    公开(公告)日：1971-07-20

    申请号：US3594717D

    申请日：1969-10-07

    Applicant: STANFORD RESEARCH INST

    Inventor： MACOVSKI ALBERT

    IPC: G01S15/89 ,  G03H3/00 ,  H04B11/00 ,  G01N29/04

    CPC classification number: G01S15/897 ,  G03H3/00

    Abstract: An object is acoustically illuminated and the acoustic image of the object is incident on and deforms an elastic surface. The elastic surface is illuminated with a first portion of light from a coherent source whereby the light is scattered to form an object beam. A second portion of the light from the coherent source is cyclically temporally offset by a modulator to form a modulated reference beam. The object and modulated reference beams are combined to form a light interference pattern which is optically scanned by an electron beam of an image dissector. The interference pattern and the electrical signal derived therefrom by the image dissector contain information relating to incidental variations in the elastic surface as well as the desired image vibrational signal. Electrical detectors and filters separate out the desired image vibrational signal which is applied to a cathode-ray tube for viewing. Alternatively, the cathode-ray tube display may be recorded on a photosensitive surface to create a holographic transparency which, when illuminated with coherent light, produces a hologram.

    Optical data processing system
    5.
    发明授权
    Optical data processing system 失效
    光学数据处理系统

    公开(公告)号：US3665097A

    公开(公告)日：1972-05-23

    申请号：US3665097D

    申请日：1969-07-25

    Applicant: STANFORD RESEARCH INST

    Inventor： MACOVSKI ALBERT

    IPC: G03H1/16 ,  G06E3/00 ,  G06K9/74 ,  H04N5/30

    CPC classification number: G03H1/16 ,  G06E3/001 ,  G06K9/74

    Abstract: An optical data processing system compares the content of transparencies (as, for example, in correlating, convolving, and matched filtering) by combining the light transmitted by a first transparency with light transmitted by a second transparency and cyclically offsetting in time the relative phase between the light beams with a modulator. The resultant interference pattern contains light information which includes cross-correlation and auto-correlation terms with the desired cross-correlation terms placed on a temporal frequency carrier so that they are electrically separable. The interference pattern is temporally scanned in a plane essentially perpendicular to its axis (as by an image dissector) to generate a complex electrical waveform having frequencies containing information relative to both crosscorrelation terms and auto-correlation terms. Since the crosscorrelation terms are on a temporal frequency carrier, they are separated by a filter. A transparency may also be simultaneously compared to a plurality of other transparencies by cyclically temporally offsetting each of the reference light beams a different amount with a plurality of modulators. The desired cross-correlation terms with respect to each transparency are placed on a plurality of temporal frequency carriers which enables separation of desired terms from each other and from the undesired terms by filtering. In either case, the desired crosscorrelation output from a filter may be utilized by a computer to provide the desired cross-correlation information. Alternatively, the desired cross-correlation information may be applied to cathode ray tube reproducers to form transparencies containing the desired information, and the transparencies thus formed utilized in a Fourier transform reconstruction apparatus to provide a visual display.

    Real time interferometry utilizing a television system
    6.
    发明授权
    Real time interferometry utilizing a television system 失效
    使用电视系统的实时干涉

    公开(公告)号：US3649754A

    公开(公告)日：1972-03-14

    申请号：US3649754D

    申请日：1970-04-20

    Applicant: STANFORD RESEARCH INST

    Inventor： MACOVSKI ALBERT

    IPC: G01B9/021 ,  H04N7/18

    CPC classification number: G01B9/021 ,  Y10S359/902

    Abstract: A real time holographic interferometer is disclosed. Two interference patterns of an object, one without stressing of the object and one with such stressing, are produced using holographic techniques. The interference patterns form visual inputs to a television camera which converts them into electrical signals. These electrical signals are combined to produce an output which contains information relative to position deformities of the object between the unstressed and stressed states and the position deformity information is displayed on an appropriate display device.

    Abstract translation: 公开了一种实时全息干涉仪。 使用全息技术产生物体的两个干涉图案，一个没有物体的应力和具有这种应力的干涉图案。 干扰图形形成电视摄像机的视觉输入，将其转换为电信号。 这些电信号被组合以产生包含关于对象在无应力状态和应力状态之间的位置变形的信息的输出，并且位置变形信息被显示在适当的显示装置上。

    Spatial filter color encoding and image reproducing apparatus and system
    7.
    发明授权
    Spatial filter color encoding and image reproducing apparatus and system 失效
    空间过滤器颜色编码和图像重现装置和系统

    公开(公告)号：US3585286A

    公开(公告)日：1971-06-15

    申请号：US3585286D

    申请日：1968-12-26

    Applicant: STANFORD RESEARCH INST

    Inventor： MACOVSKI ALBERT

    IPC: H04N9/083 ,  H04N9/06

    CPC classification number: H04N9/083

    Abstract: A filter is provided in the path of light from a scene, either live or on film, ultimately to be displayed as on a television tube. The filter has the property of encoding color information in the intensity pattern of light transmitted. The encoded intensity pattern may be used directly or recorded and regenerated. The encoding medium of the filter comprises at least three grids superimposed one upon another and disposed at different angles relative to a reference whereby at least four different bands of frequencies are generated when the encoded intensity pattern is scanned, as by a photocathode. That is, a first band of frequencies is generated including a waveform (a video signal) proportionate to variations in light intensity, two individual bands of frequencies are generated each in separate individual waveforms (video signals) modulated in accordance with intensity variations of a different one selected component color, and a fourth individual band of frequencies is generated in a waveform modulated in accordance with intensity variations in color components including still another selected component color. The frequency bands are separated by filters and used to generate a color picture on a color receiver by applying the waveform incorporating the intensity band of frequencies (the first band) to the receiver to give the general picture luminance information, applying the waveforms containing the second, third, and fourth bands of frequencies to a processor (e.g. the matrix of a colorplexer) for developing color difference signals that are applied to the receiver along with the first band of frequencies, thereby to develop a color balanced picture.

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