Lenses with tunable focal length play important roles in nature by helping species avoid
predators and capture prey. Many practical devices mimic lens concept for imaging, sensing …

In this Review, we survey recent developments in the emerging field of high-speed variable-
z-focus optical elements, which are driving important innovations in advanced imaging and …

We present a three dimensional (3D) micro integral imaging display system with extended
depth of focus by using a polarized bifocal liquid crystal lens. This lens and other optical …

Electrooptic modes with fast response and high contrast ratio are highly desirable in modern
photonics and displays. Ferroelectric liquid crystals (FLCs) are especially promising for …

An augmented reality (AR) system involving the electrically tunable location of a projected
image is implemented using a liquid-crystal (LC) lens. The projected image is either real or …

In this review, we provide an overview of recent efforts in designing high-quality tunable
liquid crystal (LC) lenses with concentric electrodes. The design concepts are introduced …

Since their discovery in 1888, liquid crystals (LCs) have attracted an unceasing research
interest due to their exceptional electro-optical properties that are crucial in the development …

Augmented reality (AR), which use computer-aided projected information to augment our
sense, has important impact on human life, especially for the elder people. However, there …

Conventional synthetic-aperture integral imaging uses a lens array to sense the three-
dimensional (3D) object or scene that can then be reconstructed digitally or optically …

Ferroelectric nematic phase is a novel state of matter, ie the sixth nematic liquid crystalline
state, that represents high degrees of fluidity and polarity simultaneously. Thanks to the …