增大全息光学元件集成成像显示离屏距离的方法

Off-Screen Optical See-Through Integral Imaging Display Based on Holographic Optical Elements

为了提升全息光学元件集成成像3D显示的离屏距离,提出了一种采用计算全息波前设计,对集成成像显示时的每个像素发散角进行精细的调控,来实现增大3D显示的离屏距离的方法。通过对设计波前进行计算机仿真得到了66.0 mm的连续3D景深,基于空间光调制器的光学重建实验实现了140.0 mm的集成成像离屏距离和75.0 mm的连续景深3D显示。该方法可以为基于全息光学元件的集成成像3D显示提供一种很好的离屏、3D分辨率增强和景深增强解决方案。

In order to improve the off-screen distance of holographic optical element integral imaging 3D display,a method to enhance the off-screen distance by using computational-generate holographic wavefront design and modulate the wavefront divergence angle of each imaging pixel is proposed. Through computer simulation of the designed wavefront,66.0 mm continuous 3D depth of field is obtained. Optical reconstruction experiment based on spatial light modulator achieves 140.0 mm integral imaging off-screen display and 75.0 mm continuous 3D depth of field. This method can provide a good method for holographic optical element integral imaging 3D display to enhance off-screen distance,3D resolution and 3D depth of field.