Electrically switchable Fresnel lens using a polymer-separated composite film
Abbreviated Journal Title
LIQUID-CRYSTALS; FABRICATION; ARRAYS; PLATE; Optics
A Fresnel lens with electrically-tunable diffraction efficiency while possessing high image quality is demonstrated using a phase-separated composite film (PSCOF). The light scattering-free PSCOF is obtained by anisotropic phase separation between liquid crystal and polymer. Such a lens can be operated below 12 volts and its switching time is reasonably fast (similar to 10 ms). The maximum diffraction efficiency reaches similar to 35% for a linearly polarized light, which is close to the theoretical limit of 41%. (C) 2005 Optical Society of America.
"Electrically switchable Fresnel lens using a polymer-separated composite film" (2005). Faculty Bibliography 2000s. 5177.