Close

Search

Search Menu
Photonics Media Photonics Buyers' Guide Photonics Spectra BioPhotonics EuroPhotonics Vision Spectra Photonics Showcase Photonics ProdSpec Photonics Handbook
More News

University Group Reports Liquid Crystal Lens with Tunable Focus

Facebook Twitter LinkedIn Email Comments
Researchers at the University of Central Florida in Orlando have reported the development of a liquid crystal lens with a focal length that can be tuned continuously from infinity to 0.6 m. They describe the device in the June 7 issue of Applied Physics Letters.

 To fabricate the lens, the scientists sandwiched a custom-made high-birefringence liquid crystal mixture between two planar substrates. The bottom substrate was glass, whose concave surface was coated with indium tin oxide to serve as a spherical electrode and the cavity filled with a UV-cured polymer. The top substrate also was made of glass and featured a planar electrode.

The application of a voltage induced a centrosymmetric gradient refractive index distribution in the liquid crystal that enables tunable focusing. The researchers note that the method may be used to fabricate a negative lens by reversing the shape of the spherical electrode.

Photonics Spectra
Jul 2004
As We Go To PressBreaking Newsconcave surfacefocal lengthindium tin oxidelensesliquid crystal lensopticsPresstime BulletinUniversity of Central Florida

Comments
back to top
Facebook Twitter Instagram LinkedIn YouTube RSS
©2019 Photonics Media, 100 West St., Pittsfield, MA, 01201 USA, info@photonics.com

Photonics Media, Laurin Publishing
x Subscribe to Photonics Spectra magazine - FREE!
We use cookies to improve user experience and analyze our website traffic as stated in our Privacy Policy. By using this website, you agree to the use of cookies unless you have disabled them.