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Optical Engineering • Open Access • new

Operating scheme for the light-emitting diode array of a volumetric display that exhibits multiple full-color dynamic images
Author(s): Ryuji Hirayama; Atsushi Shiraki; Hirotaka Nakayama; Takashi Kakue; Tomoyoshi Shimobaba; Tomoyoshi Ito

Paper Abstract

We designed and developed a control circuit for a three-dimensional (3-D) light-emitting diode (LED) array to be used in volumetric displays exhibiting full-color dynamic 3-D images. The circuit was implemented on a field-programmable gate array; therefore, pulse-width modulation, which requires high-speed processing, could be operated in real time. We experimentally evaluated the developed system by measuring the luminance of an LED with varying input and confirmed that the system works appropriately. In addition, we demonstrated that the volumetric display exhibits different full-color dynamic two-dimensional images in two orthogonal directions. Each of the exhibited images could be obtained only from the prescribed viewpoint. Such directional characteristics of the system are beneficial for applications, including digital signage, security systems, art, and amusement.

Paper Details

Date Published: 25 July 2017
PDF: 7 pages
Opt. Eng. 56(7) 073108 doi: 10.1117/1.OE.56.7.073108
Published in: Optical Engineering Volume 56, Issue 7
Show Author Affiliations
Ryuji Hirayama, Chiba Univ. (Japan)
Japan Society for the Promotion of Science (Japan)
Atsushi Shiraki, Chiba Univ. (Japan)
Hirotaka Nakayama, National Astronomical Observatory of Japan (Japan)
Takashi Kakue, Chiba Univ. (Japan)
Tomoyoshi Shimobaba, Chiba Univ. (Japan)
Tomoyoshi Ito, Chiba Univ. (Japan)


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