Depth plane adaptive integral imaging system using a vari-focal liquid lens array for realizing augmented reality

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Augmented reality (AR) is an interactive experience of a real-world environment where the objects that reside in the real world are enhanced by computer-generated perceptual information. Despite its attractive features, AR has not become popular because of the visual fatigue that many people face when they experience it. Many methods have been introduced to solve this visual fatigue problem and one of these methods is an integral imaging system that provides images almost continuous viewpoints and full parallax. However, the integral imaging system, which uses a lens array with a fixed focal length, has limited depth of focus (DOF) range. As a result, images that are outside of the DOF range become distorted. In this paper, a vari-focal liquid lens array was fabricated and the optical characteristics of the lens array were evaluated. Using the vari-focal liquid lens array, the DOF range was extended and high-resolution images are realized without restriction of depth range in an AR system. (C) 2020 Optical Society of America under the terms of the OSA Open Access Publishing Agreement
Optical Society of America
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Optics Express, v.28, no.4, pp.5602 - 5616

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EE-Journal Papers(저널논문)
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