本文提出了一种实现符号代换的方法.将无透镜投影系统与一个顺序逻辑门阵列和记录装置结合,构成了一个实现符号代换的装置.采用发光二极管(LED)做光源,同时做运算的控制元件,使符号代换的过程实现完全的光电操作.给出了实验的原理、过程及结果.

A new optical system for symbolic substitution is proposed. The system is composed of the lensless shadow-casting system comibined with optical logical array and optical image storage elements. The light-emitting diodes (IED) are used as both a light source and a control element in the operation, so that symbolic substitution is implemented by all-photoelectric manipulation. Experimental principle, procedure and result are given.