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25 条记录 (耗时 0.017 秒)

    Electrostatic image sensor having an electret which polarizes a photoconductive layer
    6.
    发明授权
    Electrostatic image sensor having an electret which polarizes a photoconductive layer 失效
    具有使光电导层极化的驻极体的静电图像传感器

    公开(公告)号：US4818857A

    公开(公告)日：1989-04-04

    申请号：US106262

    申请日：1987-10-09

    申请人： Francois Micheron ,  Dominique Broussoux

    发明人： Francois Micheron ,  Dominique Broussoux

    IPC分类号： G03B42/02 ,  A61B6/00 ,  G01T1/14 ,  G01T1/29 ,  H01L31/08 ,  H04N1/113 ,  H04N5/335 ,  H01J31/50 ,  H01J40/14

    CPC分类号： G01T1/14 ,  G01T1/246 ,  G01T1/2935 ,  H01L31/085

    摘要： An embodiment of the electrostatic image sensor comprises essentially two electrodes, one layer of photoconductive material and one dielectric layer comprising an electret designed to polarize the photoconductive layer without requiring a voltage source during the recording of an image. During a recording stage, a change-over switch short-circuits the electrodes. Photocarriers are released by the X-rays that have crossed an object to be radiographed. The said photocarriers move in the electrical field created by the electret and tend to cancel the electrical field at the interface between the two layers. During a reading stage, the change-over switch connects the electrodes to the inputs of a current amplifer while a light beam scans the layer of photoconductive material. The photocarriers move and completely cancel the electrical field at every point of the interface between the two layers. The current detected by the amplifier makes it possible to display an image on a cathode ray tube. During an initialization stage, the layer of photoconductive material is brought to the neutral state by means of a direct voltage generator connected to the electrodes by the change-over switch.

    摘要翻译： 静电图像传感器的一个实施例基本上包括两层电极，一层光电导材料和一层介电层，其中包括驻极体，该驻极体被设计成使光电导层极化，而在记录图像期间不需要电压源。 在记录阶段，切换开关短路电极。 照片载体被X射线释放，X射线已经穿过要被放射照相的物体。 所述光载流子在由驻极体产生的电场中移动，并且倾向于消除两层之间的界面处的电场。 在读取阶段，转换开关将电极连接到电流放大器的输入端，同时光束扫描光电导材料层。 光载体在两层之间的界面的每个点移动并完全消除电场。 由放大器检测的电流使得可以在阴极射线管上显示图像。 在初始化阶段期间，光电导材料层通过转换开关连接到电极的直流电压发生器进入中立状态。

    Image sensor with memory
    8.
    发明授权
    Image sensor with memory 失效
    图像传感器带记忆

    公开(公告)号：US4782227A

    公开(公告)日：1988-11-01

    申请号：US17584

    申请日：1987-02-24

    申请人： Francois Micheron ,  Dominique Broussoux ,  Jacques Trotel

    发明人： Francois Micheron ,  Dominique Broussoux ,  Jacques Trotel

    IPC分类号： H01L27/14 ,  H01L27/146 ,  H01L31/08 ,  H04N5/30 ,  H04N5/335 ,  G03G5/16

    CPC分类号： H04N5/30 ,  H01L27/14665 ,  H01L31/08

    摘要： Image sensor with memory and, more especially, image sensor with reading by thermal effect.This sensor comprises mainly a layer of a photoconductive material and a layer of a transparent material, the impedance of which varies with the temperature, these two layers being comprised between two electrodes. Furthermore, a voltage generator can be connected to the electrodes during the recording when the device is illuminated. Finally, a charge amplifier can be used to detect a current when the unit is heated.

    摘要翻译： 具有存储器的图像传感器，更具体地，具有通过热效应读取的图像传感器。 该传感器主要包括光电导材料层和透明材料层，其阻抗随温度变化，这两层包含在两个电极之间。 此外，当器件被照亮时，电压发生器可以在记录期间连接到电极。 最后，当单元被加热时，可以使用电荷放大器来检测电流。