A contact lens is provided in which tunable nanoparticles are embedded or otherwise coated on the lens to extinguish near-infrared energy. In one preferred embodiment, the tunable nanoparticles are nanoshells consisting of a dielectric core and a metal shell, wherein the plasmon resonance frequency is...http://www.google.com.hk/patents/US7438411?utm_source=gb-gplus-share專利 US7438411 - Plasmon resonant based eye protection
