Computer-generated holography (CGH) can be used to display three-dimensional (3D) images and has a special feature that no other technology possesses: it can reconstruct arbitrary object wavefronts. In this study, we investigated a high-speed full-color reconstruction method for improving the realism of 3D images produced using CGH. The proposed method uses a digital micromirror device (DMD) with a high-speed switching capability as the hologram display device. It produces 3D video by time-division multiplexing using an optical system incorporating fiber-coupled laser diodes (LDs) operating in red, green, and blue wavelengths. The wavelength dispersion of the DMD is compensated for by superimposing plane waves on the hologram. Fourier transform optics are used to separate the object, conjugate, and zeroth-order light, thus eliminating the need for an extensive 4f system. The resources used in this research, such as the programs used for the hologram generation and the schematics of the LD driver, are available on GitHub.

翻译：计算全息术（CGH）可用于显示三维（3D）图像，并具备其他技术所不具备的特殊功能：能够重建任意物体波前。本研究探索了一种提升CGH生成3D图像真实感的高速全彩色重建方法。所提方法采用具有高速切换能力的数字微镜器件（DMD）作为全息图显示器件，通过集成红绿蓝三波长光纤耦合激光二极管（LD）的光学系统，采用时分复用技术生成3D视频。通过在全息图上叠加平面波补偿DMD的色散效应，并利用傅里叶变换光学分离物光、共轭光与零级光，从而无需复杂的4f系统。本研究所使用的资源，包括全息图生成程序及LD驱动器电路原理图，均已在GitHub上开源。