一种弱化莫尔条纹的狭缝光栅LED屏裸眼3D显示器

[光学学报]    2018 第 10期
作 者 | 胡建青; 赵悟翔; 马晓莉; 王琼华  
标 签 | 光学器件   裸眼3D显示器   狭缝光栅   莫尔条纹   发光二极管屏   黑矩阵   optical devices   naked-eye 3D display   parallax barrier   moiré fringes   light-emitting diode (LED) display   black matrix  

摘 要 | 常规竖直狭缝光栅和倾斜狭缝光栅的发光二极管(LED)屏裸眼3D显示器分别存在明显的莫尔条纹和立体图像串扰等问题,为此,提出一种弱化莫尔条纹的狭缝光栅LED屏裸眼3D显示器,它由LED屏和错位非均宽透光条的狭缝光栅构成。该狭缝光栅根据LED屏黑矩阵较宽的特点,通过适当增大透光条宽度和移动透光条在其周期中的位置,来增加狭缝光栅周期结构与LED屏像素周期结构之间的差异,降低莫尔条纹中暗带的对比度,并使莫尔条纹变得稀疏,从而达到既能弱化莫尔条纹,又不会明显增加立体图像串扰的目的。制作了所提狭缝光栅LED屏裸眼3D显示器样机,获得了莫尔条纹显著弱化、无明显立体图像串扰的显示效果,验证了理论的正确性。

Abstract | There are obvious moiré fringes and crosstalk in the stereo images of a naked-eye 3D light-emitting diode (LED) display based on a conventional vertical parallax barrier and a slant parallax barrier, respectively. To solve these problems, we present a naked-eye 3D LED display based on a parallax barrier with weak moiré fringes. The naked-eye 3D LED display comprises an LED display and a malposed parallax barrier with discrepant slit widths. The proposed parallax barrier can match the LED displays that have a wide black matrix. We properly enlarge the width of the slits and slightly move the slits in their periods. This method can increase the difference between the periodic structures of the parallax barrier and the pixels of the LED display, which reduces the contrast ratio of the moiré fringes and causes them to appear sparsely. In this way, the weakened moiré fringes are not obvious and the crosstalk of the stereo images does not noticeably increase. We develop a prototype of the proposed naked-eye 3D LED display based on the parallax barrier. The prototype had the weakened moiré fringes, and its crosstalk is insignificant. Thus, the validity of our theory is confirmed.

分享到:
分享到QQ空间 分享到腾讯微博 分享到新浪微博
参考文献