Research On 3D Digital Imaging With Nanostructure

Holography is a technology to record object information by obtaining its interference patterns. It is one of the most important three-dimensional display technologies currently. In this paper, a new type method of making holograms is used. First compute Fraunhofer distribution of three-dimensional objects with digital method. Optical field distribution (phase distribution) of three-dimensional objects after propagation is got with Iterative Fourier Transform Algorithm (ITFA), then the optical field distribution is inputted to the spatial light modulator, get three-dimensional real image of the object in optical system. Reference light is introduced into the image plane, then record three-dimensional rainbow holograms on photoresist plate. As the limit information of the single input to LCoS, this issue computes segmentation blocks from the pictures, then splice to achieve a complete record of three-dimensional image. Phase distribution obtained by computer calculation, so there is no need in physical model. There may be an important means in three-dimensional virtual.The main work of this article is using Liquid Crystal on Silicon (LCoS) spatial light modulator as an image input device, do some research on making three-dimensional holograms based on optical, mechanical means. Analyze the principle of making three-dimensional holograms. One important job is study the characteristics of the reflective phase-only liquid crystal on silicon spatial light modulator(LCoS), then use a three-dimensional software 3Dmax to build three-dimensional model for multi-angle view 2D digital picture. Software is designed to get slit hologram(phase coding) from color separation and partition the wide 2D pictures into small blocks. Make samples with planed light route, and get colourful three-dimensional hologram samples.