NDLI: Switchable Lens Design for Multi-View 2D/3D Switching Display with Wide-Viewing Window

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Switchable Lens Design for Multi-View 2D/3D Switching Display with Wide-Viewing Window

Content Provider	MDPI
Author	Lee, Tae-Hyun Joo, Kyung-Il Kim, Hak-Rin
Copyright Year	2020
Description	We improved the three-dimensional (3D) crosstalk level of multi-view 3D displays using a lens array with small f-number, thereby facilitating a wide 3D viewing window. In particular, we designed a polarization-dependent-switching liquid crystal (LC)-based gradient refractive index (GRIN) lens array that could be switched between 2D and 3D viewing modes. For the GRIN lens with a small f-number (1.08), we studied the effect of the interfacial curvature between the plano-concave isotropic polymer layer and the plano-convex birefringent LC layer on the aberration properties. We examined the conventional spherical, quadratic polynomial aspherical, and a high-order (fourth-order) polynomial aspherical curvature. For the high-order polynomial aspherical curvature, the achievable transverse spherical aberration (TSA = 10.2 µm) was considerably lower than that with the spherical (TSA = 100.3 µm) and quadratic polynomial aspherical (TSA = 30.4 µm) curvatures. Consequently, the angular luminance distributions for each view were sharper for the high-order polynomial interfacial curvature. We designed multi-view (43-view) 3D displays using the arrays of switchable LC lenses with different curvatures, and the average adjacent crosstalk levels within the entire viewing window (50°) were 68.5%, 73.3%, and 60.0% for the spherical, quadratic polynomial aspherical, and high-order polynomial aspherical curvatures, respectively.
Starting Page	418
e-ISSN	20734352
DOI	10.3390/cryst10050418
Journal	Crystals
Issue Number	5
Volume Number	10
Language	English
Publisher	MDPI
Publisher Date	2020-05-24
Access Restriction	Open
Subject Keyword	Crystals Telecommunications Aspherical Lens Curvature 3d Crosstalk Gradient Refractive Index Lens Transverse Spherical Aberration Switchable Lens
Content Type	Text
Resource Type	Article

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