Grupo de Óptica y Fotónica, Instituto de Física, Facultad de Ciencias Exactas y Naturales, Universidad de Antioquia UdeA, Calle 70 No. 52-21, Medellín, Colombia.
Sci Rep. 2023 Jun 30;13(1):10651. doi: 10.1038/s41598-023-36128-x.
This study demonstrates a full-color near-eye holographic display capable of superimposing color virtual scenes with 2D, 3D, and multiple objects with extended depth upon a real scene, which also has the ability to present different 3D information depending on the focus of the user's eyes using a single computer-generated hologram per color channel. Our setup makes use of a hologram generation method based on two-step propagation and the singular value decomposition of the Fresnel transform impulse response function to efficiently generate the holograms of the target scene. Then, we test our proposal by implementing a holographic display that makes use of a phase-only spatial light modulator and time-division multiplexing for color reproduction. We demonstrate the superior quality and computation speed of this approach compared with other hologram generation techniques with both numerical and experimental results.
本研究展示了一种全彩近眼全息显示器,能够将颜色虚拟场景与二维、三维和多个具有扩展景深的物体叠加在真实场景上,并且还能够使用每个颜色通道的单个计算机生成全息图根据用户眼睛的焦点呈现不同的 3D 信息。我们的设置利用了基于两步传播和菲涅耳变换脉冲响应函数奇异值分解的全息图生成方法,有效地生成了目标场景的全息图。然后,我们通过实现利用相控阵空间光调制器和时分复用进行颜色再现的全息显示器来测试我们的方案。我们通过数值和实验结果展示了与其他全息图生成技术相比,该方法在质量和计算速度方面的优势。