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http://dx.doi.org/10.3807/KJOP.2019.30.4.142

Analysis of Quality Improvement of a Floating Image Using a Hybrid Retroreflective Mirror Array Sheet  

Yu, Dong Il (LED Smart Technology Advanced Research (LED-STAR) Center, Department of Information and Communication Engineering, Inha University)
Baek, Young Jae (LED Smart Technology Advanced Research (LED-STAR) Center, Department of Information and Communication Engineering, Inha University)
Yong, Hyeon Joong (LED Smart Technology Advanced Research (LED-STAR) Center, Department of Information and Communication Engineering, Inha University)
O, Beom Hoan (LED Smart Technology Advanced Research (LED-STAR) Center, Department of Information and Communication Engineering, Inha University)
Publication Information
Korean Journal of Optics and Photonics / v.30, no.4, 2019 , pp. 142-145 More about this Journal
Abstract
Normally, a corner cube retroreflector (CCRR) sheet is used as a retroreflective mirror array (RRMA) in a volumetric display. Each CCRR unit reflects light in the retroreflective direction, which is parallel to the incident light, and it makes a blurred image, as it shifts the position of light within its dimensions. Adopting a "curved planar wall" and "parabolic focusing" (x-axis), a hybrid-t(transverse direction)-RRMA is proposed, to improve the image quality and brightness. The improvement of image contrast is achieved by tuning a "linear v-shaped groove" structure to a "parabolic v-shaped groove". Also, the system has been simplified and the brightness enhanced 4 times by removing the half mirror.
Keywords
Floating image; Retro-reflector; Parabolic;
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