An adaptive-focus lens is a device that is capable of tuning its focal length by means of an
external stimulus. Numerous techniques for the demonstration of such devices have been …

This work presents the application of an experimental nematic liquid crystal (LC) mixture
(1929) in a large aperture lens. The LC material is composed of terphenyl and biphenyl …

In this work, a novel technique to create positive-negative tunable liquid crystal lenses is
proposed and experimentally demonstrated. This structure is based on two main elements, a …

Photonic crystal fibers (PCFs) are a special class of optical fibers with a periodic
arrangement of microstructured holes located in the fiber's cladding. Light confinement is …

A novel liquid crystal microlens array with tunable multifocal capability, high optical power
and fill-factor is proposed and experimentally demonstrated. A specific hole pattern design …

Visible Light Communication (VLC) is a promising solution to meet the ever increasing
demand for indoor data connectivity with high bit rates. VLC uses the license-free bands and …

Focal stack cameras are capable of capturing a stack of images focused at different spatial
distance, which can be further integrated to present a depth of field (DoF) effect beyond the …

Plenoptic cameras have received a wide range of research interest because it can record
the 4D plenoptic function or radiance including the radiation power and ray direction. One of …

A novel liquid crystal spherical microlens array with high optical power and almost 100% of
fill-factor is proposed and experimentally demonstrated. The combination of a specific …

The transmission electrode technique has been recently proposed as a versatile method to
obtain various types of liquid-crystal (LC) lenses. In this work, an equivalent electric circuit …