Back to Search Start Over

Ultrasound liquid crystal lens with enlarged aperture using traveling waves

Authors :
Marina Fukui
Daisuke Koyama
Mami Matsukawa
Takahiro Iwase
Jessica Onaka
Source :
Optics Letters. 46:1169
Publication Year :
2021
Publisher :
Optica Publishing Group, 2021.

Abstract

A new type of ultrasonically controlled concave liquid crystal lens based on traveling waves (TWs) with a divided electrode structure and an appropriate driving scheme is proposed in this Letter. The lens uses an annular piezoelectric ceramic divided into four parts for four-phase driving and consists of a liquid crystal layer in a sandwich structure between two circular glass substrates. The lens configuration was simulated by finite element analysis using the Ansys software. Here we discuss the use of TWs to expand the lens aperture and clarify the lens’ optical characteristics using a Shack–Hartmann wavefront sensor. The effective lens aperture using TWs was 4.4 mm, and the focal length was 3.8 m.

Details

ISSN :
15394794 and 01469592
Volume :
46
Database :
OpenAIRE
Journal :
Optics Letters
Accession number :
edsair.doi.dedup.....1f367c76032a373a20892720d7760597
Full Text :
https://doi.org/10.1364/ol.414295