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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.

This work presents an engineering inspiration of hierarchical structures inspired from cuticular photonic structures of firefly light organ. Highly efficient light management of photonic structures in bioluminescent organ has been rarely reported. The efficient mechanisms can be utilized in lighting or display applications. The hierarchical structures, which have asymmetric microstructures and longitudinal nanostructures, were successfully mimicked by using geometry-guided resist reflow, replica molding, and PDMS oxidation. Transmission through the bioinspired hierarchical structures is increased up to 70%, compared with a smooth surface. This bioinspired optical device can be effectively utilized for LED and OLED based lighting or display applications.