Share Email Print
cover

Proceedings Paper

Adaptive optics using liquid-crystal lens with segmented peripheral electrode (Conference Presentation)
Author(s): Tigran Galstian
cover GOOD NEWS! Your organization subscribes to the SPIE Digital Library. You may be able to download this paper for free. Check Access

Paper Abstract

Liquid crystals are well known for their display applications (LCDs), but they are known much less for their use in practical (real) optical imaging or vision systems. In reality, those materials have been explored during several decades to develop electrically variable lenses. Their performance optimization requires particular trade-offs that depend upon the specific application. In some cases, (such as mobile phone miniature cameras or ophthalmic), they perform rather well by providing low power consumption and miniature alternatives for mechanical systems. Our presentation will describe recent results obtained by one of the lens designs. In this design, the peripheral electrode segmentation is used to dynamically obtain various wavefront profiles, without any electrode pixel within the clear aperture of the lens. Potential applications of this approach will be presented, for example, in the field of adaptive endoscopy. Thus, the focus tuning and correction of wavefront asymmetry will be demonstrated. In addition, those lenses may provide unique capability of dynamic adjustment of the wavefront’s shape by creating prism like and other complex profiles, generating various non diffracting beams.

Paper Details

Date Published: 13 March 2019
PDF
Proc. SPIE 10941, Emerging Liquid Crystal Technologies XIV, 109410P (13 March 2019); doi: 10.1117/12.2515714
Show Author Affiliations
Tigran Galstian, Ctr. d'Optique, Photonique et Laser (Canada)


Published in SPIE Proceedings Vol. 10941:
Emerging Liquid Crystal Technologies XIV
Liang-Chy Chien; Dirk J. Broer; Igor Muševič; Byoungho Lee, Editor(s)

© SPIE. Terms of Use
Back to Top
PREMIUM CONTENT
Sign in to read the full article
Create a free SPIE account to get access to
premium articles and original research
Forgot your username?
close_icon_gray