三片式硅基液晶激光投影显示中光学引擎的设计

摘要

介绍了激光硅基液晶芯片的显示原理,针对硅基液晶光学引擎的特点,采用光学扩展量表征系统的光能利用率,并分析了光学扩展量的变化与光能利用率的关系.利用光学软件Zemax和Tracepro设计了三片式激光硅基液晶光学引擎.实验结果表明:此光学引擎体积小,光学扩展量小,照度均匀性高达到92％以上,能量利用率达到56％以上,满足设计要求.%The paper introduces the mechanism of liquid-crystal-on-silicon(LCOS) display. Etendue value is used to illustrate luminous flux and optical efficiency, and the relation between optical efficiency and etendue value is analyzed. Zemax and Tracepro are used in the design simulation. Experimental results show that the optical engine has advantages such as small size, low etendue, high light uniformity of more than 92% and high energy efficiency of 56% , and can meet the needs of projection display.