激光显示中光场匀化研究  

Investigation of Homogenizing The Light Field in Laser Display

作　　者：李霞[1] 杜华月[1] 吴成国[1] 康玉思[2] 

机构地区：[1]解放军理工大学理学院,江苏南京211101 [2]中国科学院长春光学精密机械与物理研究所,吉林长春130033

出　　处：《微计算机信息》2012年第10期183-184,共2页Control & Automation

摘　　要：本文分析了在激光显示中影响光场均匀性的因素,针对光束强度分布不均的问题,采用了二维转镜与积分器阵列组相结合的方法来实现目标面的尽量均匀,针对激光显示中散斑噪声问题,本文基于位相调制的方法,在系统中引入旋转的位相型衍射片,使屏幕上的散斑对比度显著降低,有13.1%降到3.5%。Laser display has a very good prospect of application,but imaging unevenly is a problem to work out in laser display . The cause of imaging unevenly is analysed in the paper. In order to get even illumination , we use lens array to make the intensity dis- tribution of Gaussian function become approximate even distribution. In order to reduce the laser speckle,a roaring diffuser is intro- duced in the system,and the speckle contrast is reduced from 13.1% to 3.5%.

关 键 词：激光显示 散斑 对比度 积分器阵列 

分 类 号：TP751.2[自动化与计算机技术—检测技术与自动化装置]