Preprint Article Version 1 Preserved in Portico This version is not peer-reviewed

Time-division Color Holographic Projection in Large Size Using a Digital Micromirror Device

Version 1 : Received: 15 June 2021 / Approved: 16 June 2021 / Online: 16 June 2021 (10:33:00 CEST)

A peer-reviewed article of this Preprint also exists.

Takahashi, T.; Shimobaba, T.; Kakue, T.; Ito, T. Time-Division Color Holographic Projection in Large Size Using a Digital Micromirror Device. Appl. Sci. 2021, 11, 6277. Takahashi, T.; Shimobaba, T.; Kakue, T.; Ito, T. Time-Division Color Holographic Projection in Large Size Using a Digital Micromirror Device. Appl. Sci. 2021, 11, 6277.

Journal reference: Appl. Sci. 2021, 11, 6277
DOI: 10.3390/app11146277

Abstract

Holographic projection is a simple projection because it enlarges or reduces reconstructed images without using a zoom lens. However, one major problem associated with this projection is the deterioration of image quality as the reconstructed image enlarges. In this paper, we propose a time-division holographic projection, in which the original image is divided into blocks and the holograms of each block are calculated. Using a digital micromirror device (DMD), the holograms were projected at high speed to obtain the entire reconstructed image. However, the holograms on the DMD need to be binarized, thereby causing uneven brightness between the divided blocks. We correct this by controlling the displaying time of each hologram. Additionally, combining both the proposed and noise reduction methods, the image quality of the reconstructed image was improved. Results from the simulation and optical reconstructions show we obtained a full-color reconstruction image with reduced noise and uneven brightness.

Subject Areas

holography; hologram; computer-generated hologram; holographic projection; time-division; digital micromirror device

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