University Group Reports Liquid Crystal Lens with Tunable Focus
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.
LATEST NEWS
- Exail Signs LLNL Contract, Partners with Eelume
Apr 26, 2024
- Menlo Moves U.S. HQ: Week in Brief: 4/26/2024
Apr 26, 2024
- Optofluidics Platform Keys Label-, Amplification-Free Rapid Diagnostic Tool
Apr 25, 2024
- DUV Lasers Made with Nonlinear Crystals Enhance Lithography Performance
Apr 25, 2024
- Teledyne e2v, Airy3D Collaborate on 3D Vision Solutions
Apr 24, 2024
- One-Step Hologram Generation Speeds 3D Display Creation
Apr 24, 2024
- Innovation Award Winners for Laser Technology Honored in Aachen
Apr 23, 2024
- Intech 2024: AI Arrives on the Shop Floor
Apr 22, 2024