自由立体显示器中锯齿状交错狭缝光栅的设计

光栅式自由立体显示由于易存在莫尔条纹和串扰的问题而影响其显示效果.利用斜光栅可减轻莫尔条纹但增加了视点间的串扰.本文提出一种减轻莫尔条纹的光栅设计方法,同时对可视区域影响较小.设计中对光栅进行分段,并将相邻两段狭缝错开一定距离.该方法能减小通过同一狭缝看到两相邻子像素之间的黑条的比例,获得较宽且较淡的莫尔条纹,从而减轻了视觉干扰.仿真结果表明该光栅相比传统垂直光栅,莫尔条纹亮度下降了108.1%,而可视区域仅减小32.8%,具有较高的实用价值.

Design of Zigzag Staggered Barrier for Autostereoscopic Display

Parallax barrier based autostereoscopic display is usually impaired by moire fringe and crosstalk.By using slanted parallax barrier,the moire fringes could be obviously eliminated,but often at the expense of serious image crosstalk.This paper presents a kind of zigzag staggered barrier which can reduce the moire fringe with little impact on the stereo viewing zones.The slits are divided into sections and the adjacent two jagged-edged sections are separated horizontally at acertain distance.This method canreduce the proportion of the perceived black matrix seen through the same slit,which increasing the brightness of thedarkpart of the moire fringe.In this way widen and weakened moire fringes are acquired.The simulated results show that the minimum perceived moire fringes’brightness decreases by 108.1% and the viewing zones decreases by 32.8% compared with the vertical parallax barrier.And it has higher practical value for autostereoscopic display.