Abstract

Liquid crystal (LC) lenses with weakly conductive thin films are known to have driving voltages of several volts, which are much smaller than those of devices without them; however, their response characteristics have not been investigated in much detail. Here, we show that low-voltage LC lenses, with the help of an overdrive pulse, can show response times of several 10 ms, which are comparable with voice coil motors currently used for focus-tuning of mobile cameras. We provide data on the lens power as well as real images captured using a lens module and a camera; we also present a compact circuit design that can boost a 3.5Vrms square pulse from a mobile battery to 15Vrms. The results of this study should accelerate the use of LC lenses in mobile applications.

© 2015 Optical Society of America

Full Article  |  PDF Article
OSA Recommended Articles
Sensitive voltage-dependent diffraction of a liquid crystal Fresnel lens

Wen-Chi Hung, Yu-Jen Chen, Chia-Huey Lin, I-Min Jiang, and Tzu-Fang Hsu
Appl. Opt. 48(11) 2094-2098 (2009)

References

You do not have subscription access to this journal. Citation lists with outbound citation links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Supplementary Material (2)

NameDescription
» Visualization 1: AVI (2017 KB)      Video taken during normal driving.
» Visualization 2: AVI (2041 KB)      Video taken during advanced driving.

Cited By

You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Figures (6)

You do not have subscription access to this journal. Figure files are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Metrics

You do not have subscription access to this journal. Article level metrics are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription