HoloDigilog Human Media Research Center, 3D Display Research Center, Kwangwoon University, Wolgye-Dong, Nowon-Gu, Seoul 139-701, South Korea
Opt Lett. 2013 Jun 1;38(11):1835-7. doi: 10.1364/OL.38.001835.
We propose an approach to generate as many parallax images (PIs) having different viewpoints of a 3-D object as required by use of multiple diffraction gratings (MDG) and confirm its feasibility through theoretical analysis and optical experiments. Here, the PIs generated from the MDG are derived as a convolution integral between the scaled object intensity and each δ-function array of m number of diffraction gratings based on wave-optics, which means the total number of PIs and viewpoints to be generated with the MDG may increase with the mth power of that generated with the single diffraction grating. In addition, optical experiments show that the number of PIs for the case of m=2 has been increased up to the second power of that for the case of m=1, which may validate the theoretical analysis and confirm its feasibility in the practical application.
我们提出了一种使用多个衍射光栅（MDG）生成所需数量的 3D 物体不同视角的视差图像（PI）的方法，并通过理论分析和光学实验验证了其可行性。在这里，基于波动光学，从 MDG 生成的 PI 被推导为缩放对象强度与 m 个衍射光栅的每个 δ 函数阵列之间的卷积积分，这意味着可以使用 MDG 生成的 PI 和视点的总数可以随单个衍射光栅的 m 次幂而增加。此外，光学实验表明，m=2 的情况下的 PI 数量已经增加到 m=1 的情况下的 PI 数量的平方，这可能验证了理论分析并确认了其在实际应用中的可行性。
