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    • 1. 发明授权
    • Method and apparatus for optical projection of deformation images
    • 用于光学投影变形图像的方法和装置
    • US3679299A
    • 1972-07-25
    • US3679299D
    • 1968-12-20
    • GEN ELECTRIC
    • BURGESS JAMES FKOPCZEWSKI ROBERT FHOLEMAN JOHN M
    • G03B21/00H04N5/82G03B21/06
    • H04N5/82G03B21/001
    • The optical projection of information stored in a relief image such as a pattern of surface deformation of a light reflecting medium is accomplished by a projector which images on a screen the foci of either of the two sets of mirrors produced by the curved surfaces of the deformations. The hollows or concave mirrors provided by the bottoms of the deformations have their foci in front of the recording and when imaged on a screen by the projection optics provide a bright line image on a light background. The convex mirrors at the edges of the deformations have their foci (virtual) located to the rear of the recording and when imaged on the screen by the projection optics provide a dark outline of the deformations on a light background. In the embodiment illustrated, the projector is a reader and is provided with a back projection screen at the same end of the reader as the recording to be projected and the projection path includes suitable mirrors for reversing the direction of the projected light.
    • 存储在诸如光反射介质的表面变形图案的浮雕图像中的信息的光学投影通过投影仪来实现,该投影仪在屏幕上成像由变形的曲面产生的两组反射镜中的任一个的焦点 。 由变形的底部提供的中空或凹面镜具有它们的焦点在记录的前面,并且当通过投影光学器件在屏幕上成像时,在浅色背景上提供亮线图像。 在变形边缘处的凸镜具有位于记录背面的焦点(虚拟),并且当通过投影光学器件在屏幕上成像时,在浅色背景上提供变形的暗轮廓。 在所示的实施例中,投影仪是读取器,并且在读取器的与要投影的记录相同的端部设置有背投影屏幕,并且投影路径包括用于反转投影光的方向的合适的反射镜。
    • 7. 发明授权
    • Information storage and retrieval employing an electron beam
    • 使用电子束的信息存储和检索
    • US3573753A
    • 1971-04-06
    • US3573753D
    • 1968-08-01
    • GEN ELECTRIC
    • SKELLY DAVID WKOPCZEWSKI ROBERT FBURGESS JAMES FNEWBERRY STERLING P
    • G11C13/04G11C11/34
    • G11C13/048
    • A storage medium is described wherein coded information is destructively written by selectively inducing breakdown in a threshold biased capacitor having an electron sensitive variable conductivity layer positioned therein. In one specific embodiment, a hexachlorobutadiene dielectric layer and a juxtaposed lead oxide semiconductive layer are sandwiched between a tin oxide electrode and an electron transparent aluminum electrode. After threshold biasing the structure in a direction opposing conductivity in the lead oxide layer, a 10 kv. electron beam is selectively penetrated into the layer of lead oxide to induce conductivity therein thereby shifting the biasing voltage division in the storage medium to effect a localized dielectric breakdown in the hexachlorobutadiene. The dielectric breakdown in the hexachlorobutadiene selectively ruptures both the dielectric layer and the aluminum electrode thereover producing 10- 50 mil diameter apertures at points of electron beam irradiation. Information is readout by reverse biasing the storage medium and selectively scanning the medium with an electron beam. In a preferred embodiment, a semiconductive wafer is substituted for the tin oxide electrode to permit readout of the recorded information unimpeded by capacitive coupling between the electrodes.