[LCTp1-4L]Enhanced Utilization of Ambient Light by Optical Films Coupled to a Luminescent Waveguide
*Yasuhiro Tsutsumi1, Shiori Matsuda1, Ichiro Fujieda1(1. Ritsumeikan University(Japan))
Keywords:
luminescent waveguide,optical film,ambient contrast ratio,liquid crystal
Ambient light is converted to photoluminescence photons in a luminescent waveguide. A reflector placed below increases the upward flux by a factor of 1.7. A lightdiffusing film attached to its bottom surface improves this factor to 2.2. The ambient light redirected by these films would narrow a color gamut.