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    • 2. 发明授权
    • Arrangement for displaying deformations of deformable structures by
holographic interferometry
    • 通过全息干涉法显示可变形结构的变形的布置
    • US4304458A
    • 1981-12-08
    • US887341
    • 1978-03-16
    • Jean-Pierre HuignardJean-Pierre HerriauJean-Louis Bruneel
    • Jean-Pierre HuignardJean-Pierre HerriauJean-Louis Bruneel
    • G01B9/021G01B11/24G03H1/00
    • G01B9/021
    • The arrangement for displaying deformations of deformable structures by holographic interferometry, in which the interferogramme of the object is obtained by double exposure for an object subjected to periodic deformation or by prolonged exposure by comparison with the period of vibration for a vibrating object, comprises a recording electro-optical, photoconductive crystal to which is applied an electrical field substantially orthogonal to the mean direction of the fringes. The interferogramme is viewed in an image plane or recorded in a memory tube where it is desired to memorize the information because readout destroys the information. The arrangement can be made compact by integration of the displaying means in an enclosure. In that case, the source furnishes a reference beam and an object beam which are respectively directed towards the enclosure and the object by optic cables.
    • 用于通过全息干涉测量显示可变形结构的变形的装置,其中通过对于经受周期性变形的物体的双重曝光或通过与振动物体的振动周期相比较长时间曝光获得物体的干涉图,包括记录 电光学光电晶体,其施加基本上与条纹的平均方向正交的电场。 在图像平面中观察干涉图或记录在存储管中,在存储管中期望存储信息,因为读出会破坏信息。 通过将显示装置集成在外壳中,可以使排列紧凑。 在这种情况下,源通过光缆提供分别指向外壳和物体的参考光束和物体光束。
    • 9. 发明授权
    • Liquid-crystal image converter device
    • 液晶图像转换装置
    • US4368386A
    • 1983-01-11
    • US231117
    • 1981-02-03
    • Jean-Pierre HuignardSerge Le BerreChristian MayeuxFrancois Micheron
    • Jean-Pierre HuignardSerge Le BerreChristian MayeuxFrancois Micheron
    • G03B42/02A61B6/00G02F1/135G09F9/00H04N5/74
    • G02F1/135
    • The invention provides an image converter device which utilizes a liquid crystal cell in which a layer of a nematic material or a nematic-cholesteric mixture is enclosed between a first plate of a photoconductive material, provided with an external electrode, and a second transparent plate, provided with an internal electrode. The photoconductive material may be bismuth oxide, or a mixture of the latter with germanium or silicon oxide. A direct or alternative voltage is applied between the electrodes. An X-rays image, or an image displayed on the screen of a C.R. tube is projected onto the photoconductive plate whose conductivity, thus spatially modulated, causes a spatially variable voltage to be applied in the liquid crystal layer. Various electro-optical effects, such as dynamic scattering, controlled birofringence or controlled rotatory polarization in a twisted structure, can be used to make the projected image to appear in the liquid crystal layer illuminated by a visible light read-out beam and be directly observed or enlarged by projection onto a screen.
    • 本发明提供了一种图像转换器装置,其利用液晶单元,其中在具有外部电极的光导材料的第一板和第二透明板之间包含向列型材料或向列型胆甾型混合物层, 设置有内部电极。 光电导材料可以是氧化铋或其后者与锗或氧化硅的混合物。 在电极之间施加直接或替代的电压。 将X射线图像或显示在C.R.管的屏幕上的图像投影到导电性板上,其导电性由此被空间调制,导致在液晶层中施加空间上可变的电压。 可以使用各种电光效应,例如在扭曲结构中的动态散射,受控制的生物刺激或受控的旋光极化,使得投射的图像出现在由可见光读出光束照射的液晶层中并被直接观察 或通过投影放大到屏幕上。