一种降低柱透镜式裸眼3D串扰度的方法

A method to reduce cylindrical lens type naked eye 3D crosstalk

柱透镜式裸眼3D显示系统近年来在各个领域发展迅速。为了进一步解决柱透镜式裸眼3D串扰问题,提出一种通过平移LCD图像面板上的像素位置,并减小像素间隔和调整柱透镜倾斜角度来降低柱透镜光栅自由立体显示器相邻视点间串扰的方法。针对双视点柱透镜式裸眼3D显示系统分析其串扰原因,计算了柱透镜厚度、节距、焦距以及曲率半径等参数,分析了LCD图像面板像素位置、柱透镜倾斜角度、像素间隔与串扰面积及莫尔条纹厚度之间的关系,在保证莫尔条纹厚度不变的情况下降低了视区边缘最大串扰度。采用Lighttools软件对上述方法进行仿真,对像素数为120×60的局部区域进行模拟,结果显示改进前后视区边缘最大串扰度由50%降低至30%,最佳视点串扰度由0.93%降低至0.32%,且最佳视点区域扩展了±15mm,对降低柱透镜式裸眼3D串扰具有借鉴意义。

The cylindrical lens type glasses-free 3 D display system has developed rapidly in various fields in recent years. In order to further solve the problem of cylindrical lens type naked eye 3 D crosstalk, a method is proposed to reduce the crosstalk between adjacent viewpoints of cylindrical lens grating autostereoscopic displays by shifting the pixel position on the LCD image panel, reducing the pixel interval and adjusting the tilt angle of the cylindrical lens. The causes of crosstalk for the dual-view cylindrical lens type naked eye 3 D display system were analyzed.Paramefers such as the thickness, pitch, focal length and carvature radius of cylindrical lens were calculated. The relationship between pixel position, cylindrical Lens tilt angle, pixel interval, crosstalk area and moive thickness of LCD image panel is examined. The relationship between the thickness of the moiré fringe reduces the maximum crosstalk at the edge of the viewing zone while ensuring the thickness of the moiré fringe remains unchanged. The above method is simulated by Lighttools software, and the local area with the number of pixels of 120×60 is simulated. The results show that the maximum crosstalk at the edge of the viewing zone before and after the improvement is reduced from 50% to 30%, and the crosstalk at the best view point is reduced from 0.93% to 0.32%, and the best view point area is extended by ±15 mm, which is of reference significance for reducing cylindrical lens-type naked eye 3 D crosstalk.