Method to enlarge the hologram viewing window using a mirror module
Author
Kang H.
Ohmura, N.
Yamaguchi, T.
Yoshikawa H.
Kim, S.-C.
Kim, E.-S.
Date
2009Source Title
Optical Engineering
Print ISSN
0091-3286
Volume
48
Issue
7
Language
English
Type
ArticleItem Usage Stats
112
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Abstract
A liquid crystal panel for a video projector is often used for holographic television. However, its pixel size and pixel number are not enough for practical holographic 3-D display. Therefore, a multipanel configuration is generally used to increase the viewing window and displayed image size, and many spatial light modulators should be used in them. We propose a novel method to increase the viewing window of a holographic display system. The proposed method, which is implemented by using a mirror module and 4-f lens set, is to reconfigure the beam shape reflected by a spatial light modulator. The equipment is applied to a holographic display system, which has only a single spatial light modulator; a hologram could be displayed in a wider viewing window by the equipment than that of the conventional method. By the proposed method, the resolution of the reconfigured spatial light modulator has double resolution in the horizontal direction. Inversely, the vertical resolution is decreased. Even if the vertical resolution is decreased, a viewer could get 3-D effect because humans get more 3-D information in the horizontal direction. We have experimented using a liquid crystal on silicon (LcOS), whose resolution is 4096×2160pixels. The reconfigured resolution by the mirror module is 8192×1080pixels. From the experiments, the horizontal viewing window is almost two times wider than that without the mirror module. As a result, the hologram can be observed binocularly. © 2009 Society of Photo-Optical Instrumentation Engineers.
Keywords
4-f lens systemFresnel hologram
holographic display
mirror module
viewing window
3-D displays
3D information
Beam shapes
Conventional methods
Fresnel holograms
Lens systems
Liquid crystal on silicon
Liquid-crystal panels
Pixel size
Spatial light modulators
Vertical resolution
Video projectors
Viewing windows
Holograms
Light modulation
Light modulators
Liquid crystals
Lithography
Mirrors
Pixels
Three dimensional
Holographic displays
Permalink
http://hdl.handle.net/11693/22542Published Version (Please cite this version)
http://dx.doi.org/10.1117/1.3180869Collections
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