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采用光寻址红外液晶光阀的动态红外场景生成系统受可见光图像写入源的影响,输出的红外图像帧频较低(<100 Hz),而且光寻址液晶器件结构相对复杂,能量利用率低。针对这些缺点,提出了一种采用预应力液晶的电寻址红外液晶光阀。以7×7阵列的反射式电寻址红外液晶光阀为例,介绍了电寻址红外液晶器件的结构及制作过程,设计了采用逐点扫描的驱动控制电路,得到了具有灰度的红外图形。这种电寻址红外液晶光阀结构紧凑简单,能量利用率高,输出图像的帧频可达250 Hz,为研制具有实用价值的高分辨率、高帧频的电寻址红外液晶光阀提供了技术基础。
The dynamic infrared scene generation system using optical addressing infrared liquid crystal light valve is affected by the source of visible light image writing. The output infrared image has a low frame rate (<100 Hz), and the structure of the optical addressing liquid crystal device is relatively complicated. The energy utilization rate low. In response to these shortcomings, an electrically-addressed infrared liquid crystal light valve using prestressed liquid crystal is proposed. Taking a 7 × 7 array of reflective electrical addressing infrared liquid crystal light valves as an example, the structure and manufacturing process of the electrical addressing infrared liquid crystal device are introduced. The drive control circuit with point-by-point scanning is designed and the infrared Graphics. This kind of electric addressing infrared liquid crystal light valve has the advantages of compact structure and high energy utilization, and the frame rate of the output image can reach 250 Hz, which is provided for developing a high resolution and high frame rate electric addressing infrared liquid crystal light valve with practical value The technical basis.