Modal liquid crystal microlens array with tunable-multifocus and dual lens modes

Che-Ju Hsu; Mareena Antony; Yu-Wu Wang; Chi-Yen Huang

doi:10.1117/12.3017503

18 June 2024 Modal liquid crystal microlens array with tunable-multifocus and dual lens modes

Che-Ju Hsu, Mareena Antony, Yu-Wu Wang, Chi-Yen Huang

Proceedings Volume PC13016, Liquid Crystals Optics and Photonic Devices; PC130160J (2024) https://doi.org/10.1117/12.3017503
Event: SPIE Photonics Europe, 2024, Strasbourg, France

Abstract

This study presents an innovative approach to create a tunable multifocal LC microlens array (TMLCMA) that can switch between convex and concave modes. The TMLCMA is constructed using nematics and a triple-electrode structure comprising a top large-hole electrode, a middle small-hole array, and a bottom planar ITO electrode. A ZTO modal film is applied to the large-hole electrode on the top substrate to aid in distributing the electric field across the large-hole area. Various voltage control methods can manipulate the TMLCMA. Under the influence of voltage, the axially symmetric fringing electric field generated by the top large-hole electrode leads to a gradual and radial adjustment of the microlens's focal length from the TMLCMA's periphery to its center. This electrically tunable gradient in focal length is achieved. Practical demonstrations of the imaging functions of the TMLCMA are provided.

Conference Presentation

Citation Download Citation

Che-Ju Hsu, Mareena Antony, Yu-Wu Wang, and Chi-Yen Huang "Modal liquid crystal microlens array with tunable-multifocus and dual lens modes", Proc. SPIE PC13016, Liquid Crystals Optics and Photonic Devices, PC130160J (18 June 2024); https://doi.org/10.1117/12.3017503

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