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http://dx.doi.org/10.3807/JOSK.2015.19.3.265

Polarization-Dependent Microlens Array Using Reactive Mesogen Aligned by Top-Down Nanogrooves for Switchable Three-Dimensional Applications  

Son, Ki-Beom (Department of Sensor and Display Engineering, Kyungpook National University)
Kim, Mugeon (School of Electronics Engineering, Kyungpook National University)
Park, Min-Kyu (School of Electronics Engineering, Kyungpook National University)
Kim, Hak-Rin (Department of Sensor and Display Engineering, Kyungpook National University)
Publication Information
Journal of the Optical Society of Korea / v.19, no.3, 2015 , pp. 265-271 More about this Journal
Abstract
We propose a reactive mesogen (RM) lens array to obtain good focusing behavior along with a short focal plane, where the focusing behavior is switchable according to the polarization state of incident light. Polarization-dependent focusing behavior is obtained using a planoconvex RM microlens array on a planoconcave isotropic lens template. Even though the sagitta of our RM lens is high, to obtain the short focal length, the RM layer can be aligned well by introducing a top-down alignment effect, using a nanogrooved template. The optical noise due to the $moir{\acute{e}}$ effect generated by the nanogrooves on the surface of the planoconvex RM layer can be removed simply by overcoating a thin RM layer, which is self-aligned by the geometric surface effect, without an additional alignment process. We demonstrate a hexagonal-packed RM lens array that has a very high fill factor and symmetric phase profile, for an ideal lens.
Keywords
Reactive mesogen; Switchable microlens; Switchable 3D applications; Overcoating process; Nanogrooves;
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Times Cited By KSCI : 3  (Citation Analysis)
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