Reflective electrically-addressed spatial light modulator based on infrared sheared stress polymer network liquid crystal
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摘要: 为了给高帧频红外成像导引头半实物仿真提供高帧频、宽光谱、大动态范围的红外场景，利用切变聚合物网络液晶（SPNLC）电光调制机理制作了反射式电寻址SPNLC空间光调制器。通过LabView编写控制程序，利用计算机并口数据寄存器和控制寄存器为译码放大电路提供写入信号，驱动SPNLC盒各像素，实现红外图像的显示。实验得到厚度为13m的反射式电寻址红外SPNLC空间光调制器，当入射辐射的黑体温度为300℃，驱动电压为60V时，测得样机所显示的几幅长波红外图像(8m～12m) 的帧频为100Hz，输出最大温差大于15℃。Abstract: In order to supply the high frequency, wide spectrum, large dynamic infrared images for the semi-physical simulation test and evaluation system of the infrared-imaging seeker, the reflective electrically-addressed infrared spatial light modulator based on infrared sheared stress polymer network liquid crystal (SPNLC) was developed by making use of the electro-optical modulation mechanism of SPNLC, and a sample of electrically-addressed infrared SPNLC was fabricated. During the development, the control program was compiled by the aid of LabView, and the data register and control register were adopted to offer the read-in signal for the coding magnify circuit to drive every pixel. A reflective electrically-addressed infrared SPNLC spatial light modulator, whose thickness is 13m, was obtained by repetition test. The frame frequency of infrared images is 100Hz while the temperature of the blackbody is 300℃ and the driving voltage is 60V. The output maximum temperature difference is higher than 15℃.
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