Title :
Efficient Linearly Polarized Lamp for Liquid Crystal Displays
Author :
Tsai, Chang-Ching ; Wu, Shin-Tson
Author_Institution :
Coll. of Opt. & Photonics, Univ. of Central Florida, Orlando, FL
Abstract :
We propose a new optical design to produce linearly polarized illumination for liquid crystal displays. The operation mechanism is based on polarization conversion due to induced surface plasmon polariton on metallic gratings in conical diffraction. This linearly polarized lamp integrates an unpolarized light source and a light recycling scheme inside the lamp housing. Its structure is simple and, moreover, its optical efficiency reaches 92% in emitting a linearly polarized light.
Keywords :
diffraction gratings; lamps; liquid crystal displays; polarisation; surface plasmons; conical diffraction; illumination; induced surface plasmon polariton; light recycling scheme; linearly polarized lamp; liquid crystal displays; metallic gratings; polarization conversion; Diffraction gratings; Lamps; Light sources; Lighting; Liquid crystal displays; Optical design; Optical diffraction; Optical polarization; Plasmons; Recycling; Backlight recycling; linear polarized light source; polarization conversion via surface plasmons;
Journal_Title :
Display Technology, Journal of
DOI :
10.1109/JDT.2008.2010513
