论文部分内容阅读
研究了计算机程控光学器件的性能。通过对液晶空间光调制器进行电寻址控制,得到了振幅模式、二进制相位模式和连续相位模式的计算机程控透镜和程控微透镜阵列。实验结果和计算分析都表明,连续相位模式的程控透镜具有较好的聚焦性能和光效率。程控微透镜阵列的优点是阵列中的每一个微透镜都可以单独控制,可以得到所需要的阵列形式。实验给出了一个由这样的微透镜阵列产生的去掉了中心4×4阵列的8×8光斑阵列样式。还给出了利用程控透镜来方便有效地演示和研究透镜的像差方法。由计算机控制空间光调制器得到的光学器件虽然具有极大的灵活性,但是由于空间光调制器的像素的尺寸影响了它的精细程度,限制了它的应用。
The performance of computer programmed optics was studied. Through the electrical addressing control of liquid crystal spatial light modulator, the computer program controlled lens and programmed microlens array of amplitude mode, binary phase mode and continuous phase mode are obtained. Experimental results and computational analysis show that the program-controlled lens with continuous phase mode has better focusing performance and optical efficiency. The advantage of a programmed microlens array is that each microlens in the array can be individually controlled to achieve the desired array pattern. Experiments have shown an 8x8 array of spot patterns created by such a microlens array with a central 4x4 array removed. The aberration method of using the programmed lens to demonstrate and study the lens conveniently and effectively is also given. The optical device obtained by the computer-controlled spatial light modulator has great flexibility, but its application is limited due to the size of the pixel of the spatial light modulator.