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    • 34. 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。
    • 36. 发明授权
    • Laser source with coherent beam recombination
    • 具有相干光束复合的激光源
    • US07852888B2
    • 2010-12-14
    • US12063619
    • 2006-08-10
    • Sebastien DemoustierAmaud BrignonJean-Pierre HuignardLaurent MugnierJerome Primot
    • Sebastien DemoustierAmaud BrignonJean-Pierre HuignardLaurent MugnierJerome Primot
    • H01S3/00G02B26/00
    • H01S3/2383H01S3/005H01S3/067
    • A laser source is disclosed with coherent recombination of N spatial monomode laser beams having N phase shifters controlled by a phase-lock device (3). The phase-lock device has an optical device (30) capable of taking at least a portion of each of the N beams. The optical device has an optical element (32) capable of applying a phase deformation, and at least one matrix (M1) of detectors capable of detecting a first image (im) of a wave surface corresponding to the N beams. The matrix (M1) of detectors also detects a second image (imd) deformed by the optical element (32). Processing means (31) are provided for processing the first and second images. The processing means are configured so as to measure the phase pistons between on the sub-pupils (spj) corresponding to the N beams and to apply phase corrections c(φ) to each of the N beams, by means of said N phase shifters so as to minimize the phase pistons.
    • 公开了具有由锁相装置(3)控制的N个移相器的N个空间单模激光束的相干复合的激光源。 相位锁定装置具有能够取得N个光束中的每一个的至少一部分的光学装置(30)。 该光学装置具有能够施加相位变形的光学元件(32)和能够检测与N个光束对应的波形表面的第一图像(im)的至少一个检测器矩阵(M1)。 检测器的矩阵(M1)还检测由光学元件(32)变形的第二图像(imd)。 提供处理装置(31)用于处理第一和第二图像。 处理装置被配置为测量对应于N束的子瞳孔(spj)之间的相位活塞,并且通过所述N个移相器对每个N个波束施加相位校正c(&phgr) 以便使相位活塞最小化。