Hexagonal liquid crystal lens array for 3D endoscopy

Amir Hassanfiroozi, Yi-Pai Huang, Bahram Javidi, Han Ping D. Shieh

Research output: Contribution to journalArticlepeer-review

70 Scopus citations

Abstract

A liquid crystal lens array with a hexagonal arrangement is investigated experimentally. The uniqueness of this study exists in the fact that using convex-ring electrode provides a smooth and controllable applied potential profile across the aperture to manage the phase profile. We observed considerable differences between flat electrode and convex-ring electrode; in particular the lens focal length is variable in a wider range from 2.5cm to infinity. This study presents several noteworthy characteristics such as low driving voltage; 30 μm cell gap and the lens is electrically switchable between 2D/3D modes. We demonstrate a hexagonal LC-lens array for capturing 3D images by using single sensor using integral imaging.

Original languageEnglish
Pages (from-to)971-981
Number of pages11
JournalOptics Express
Volume23
Issue number2
DOIs
StatePublished - 26 Jan 2015

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