基于OMAP的SLM控制器在数字全息系统中的应用

Design of OMAP-based SLM controller in digital holographic system

在传统的数字全息系统中,由于采用PC机控制空间光调制器（SLM）,系统容易出现结构复杂、体积庞大以及成本高等问题。针对数字全息系统小型化的需求,提出了一种基于TI OMAP嵌入式平台下的SLM控制器方案,使用嵌入式系统取代传统的PC机来控制SLM,实现串口控制、图像预处理、图像采集等功能。实验结果表明该方法能实现与PC机控制SLM相同的全部功能,且有效地降低了全息系统及其它基于SLM的光学系统的总体尺寸和成本,为数字全息系统的小型化设计提供了一种新思路,有助于数字全息系统的发展。

The traditional digital holographic system has the problems of complex structure,large volume and high cost due to controlling the spatial light modulator（ SLM） with PC. In order to meet the needs of digital holographic system miniaturization,a SLM controller based on TI OMAP embedded platform has been proposed. The embedded system is used to replace the traditional PC to control the SLM,which implemented serial port control,image preprocessing,image acquisition and other functions. The experimental results show that we can achieve all functions that are same as controlling the SLM with PC. The method effectively reduces overall size and cost of holographic system and other optical systems based on SLM,which provides a new idea for digital holographic system miniaturization and contributes to the development of digital holographic system.