CdS photoconductive films have been combined with both nematic and nematic/cholesteric liquid crystal mixtures to produce a broad class of photoactivated light valve devices. These devices span a spectrum of applications that includes: 1) real-time projection display; 2) image storage projection display; and 3) real-time inputs for optical data processing. The work reported here is a development on earlier results in which ZnS and selenium were used as photoconductors. Among other advantages the new devices are far more sensitive than the earlier devices, and (as opposed to ZnS) can be activated with visible light (0.510 µm). The projection cells act as high level light intensifiers. Intensification ratios of 104have been observed. The cells used for optical data processing transfer spatially distributed information from noncoherent to coherent light beams. Coherent light efficiencies of 92% have been observed. Typical performance figures for these cells are: Projection Cell Coherent Light Cell Resolution 60 lines/mm 35 lines/mm Write Beam Intensity 0.12 mW/cm2Sensitivity 0.015 mJ/cm2-- Excitation Time 150 msec 15 msec Turn-Off Time 1-2 sec (erase) 120 msec (decay) Storage Time Months Contrast Ratio 10:1 500:1 Cell construction, device characteristics, and performance will be discussed for each of the three classes of device.
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机译：CdS光电导膜已与向列型和向列型/胆甾型液晶混合物结合在一起，产生了种类繁多的光活化光阀装置。这些设备涵盖了一系列应用，其中包括：1）实时投影显示; 2）图像存储投影显示; 3）用于光学数据处理的实时输入。此处报道的工作是对将ZnS和硒用作光电导体的早期结果的发展。除其他优点外，新设备比以前的设备灵敏得多，并且（与ZnS相反）可以用可见光（0.510 µm）激活。投影单元充当高级光增强器。观察到强度比为10 4 。用于光学数据处理的单元将空间分布的信息从非相干光束传输到相干光束。已经观察到相干光效率为92％。这些电池的典型性能指标为：投影电池相干光电池分辨率60线/毫米35线/毫米写入光束强度0.12 mW / cm 2 灵敏度0.015 mJ / cm 2 -激励时间150毫秒15毫秒关断时间1-2秒（擦除）120毫秒（衰减）存储时间月对比度10：1 500：1将针对每个三类设备。
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