Title :
Highly efficient LED lens biologically inspired from cuticle nanostructures of firefly light organs
Author :
Kim, J.J. ; Lee, Y.S. ; Jeong, K.H.
Author_Institution :
Dept. of Bio & Brain Eng., Korea Adv. Inst. of Sci. & Technol. (KAIST), Daejeon, South Korea
Abstract :
This work reports an engineering inspiration of lantern´s nanocuticles found in a firefly. It includes the first observation of antireflective structures on the lighting organ and a novel application for highly efficient LED illumination. The nanocuticular patterns contribute to highly efficient light extraction of high transmission and high out-coupling of luminescent light. The nanopatterns are employed on the lens surface for highly efficient light extraction. A bioinspired lens for highly efficient LED illumination was successfully fabricated by using colloidal lithography, RIE, and replica molding method. Transmission through a lens with nanopattern arrays is increased by 4.3%, compared to a smooth LED lens. We strongly believe this device can be effectively utilized for diverse high efficient LED lighting applications.
Keywords :
antireflection coatings; lenses; light emitting diodes; moulding; nanophotonics; nanostructured materials; optical fabrication; replica techniques; sputter etching; LED lens; RIE; antireflective structures; bioinspired lens; colloidal lithography; cuticle nanostructures; firefly light organs; highly efficient LED illumination; highly efficient light extraction; lantern nanocuticles; lens surface; lighting organ; luminescent light; nanocuticular patterns; nanopattern arrays; nanopatterns; replica molding method; Biological systems; Fires; Lenses; Light emitting diodes; Lighting; Nanobioscience; Nanostructures; anti-reflective structures; bioinspired; firefly light organ; highly efficient LED lens; light emitting diode (LED); nanopatterns;
Conference_Titel :
Solid-State Sensors, Actuators and Microsystems Conference (TRANSDUCERS), 2011 16th International
Conference_Location :
Beijing
Print_ISBN :
978-1-4577-0157-3
DOI :
10.1109/TRANSDUCERS.2011.5969753