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7 August 2023 Field-of-view extension in projection-type holographic display with full-depth range using a waveguide
Woonchan Moon, Hosung Jeon, Seongju Lee, Joonku Hahn
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Proceedings Volume 12624, Digital Optical Technologies 2023; 1262409 (2023) https://doi.org/10.1117/12.2675882
Event: SPIE Digital Optical Technologies, 2023, Munich, Germany
Abstract
The limited space-bandwidth product of digital holography results in a trade-off between the field of view (FOV) and eye motion box (EMB) size. One potential approach to overcome this trade-off is to use a waveguide as a pupil expander. However, this approach has the constraint of generating only infinite depth images or 2D images, which can cause visual discomfort. To address this issue, a novel method that enhances the space-bandwidth product while providing a 3D image with full depth range is necessary. In this paper, we introduce a projection-type holographic display that combines a waveguide, a spatial light modulator, and a laser light source to display true 3D holographic images with an extended FOV. Experimental results demonstrate that this method effectively generates holographic 3D images with an FOV expanded 4 times in the horizontal direction compared to conventional methods.
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Woonchan Moon, Hosung Jeon, Seongju Lee, and Joonku Hahn "Field-of-view extension in projection-type holographic display with full-depth range using a waveguide", Proc. SPIE 12624, Digital Optical Technologies 2023, 1262409 (7 August 2023); https://doi.org/10.1117/12.2675882
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KEYWORDS
Waveguides
Spatial light modulators
Holographic displays
3D displays
Computer generated holography
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