Abstract: Disclosed are imprinting ink compositions for use in imprinting techniques such as SCIL. The imprinting ink compositions comprise TMO nanoparticles stabilized by selected polymerization inhibitors that allow for the formation of a stable imprinting ink composition in which polymerization of the TMO nanoparticles is effectively suppressed and from which high refractive index patterned layers can be formed. Imprinting methods using such imprinting ink compositions, optical devices including patterned layers formed from such imprinting ink compositions and lighting devices, optical sensors and photovoltaic devices including such optical elements are also disclosed.

Abstract: An illumination device comprising a plurality of solid state light sources and a concentrating wave length converter arranged to inject light from said light sources through at least one entrance surface and to extract wave length converted light from at least one exit surface, comprising a structured layer provided on said exit surface, said structured layer having a structure period less than 5 micrometers, thereby enabling out-coupling through the exit surface by a combination of refraction and diffraction. In a situation where the angle of incidence on a surface is within a limited range, a combination of refraction and diffraction may provide a superior out-coupling from that surface.

Abstract: Disclosed are imprinting ink compositions for use in imprinting techniques such as SCIL. The imprinting ink compositions comprise TMO nanoparticles stabilized by selected polymerization inhibitors that allow for the formation of a stable imprinting ink composition in which polymerization of the TMO nanoparticles is effectively suppressed and from which high refractive index patterned layers can be formed. Imprinting methods using such imprinting ink compositions, optical devices including patterned layers formed from such imprinting ink compositions and lighting devices, optical sensors and photovoltaic devices including such optical elements are also disclosed.

Abstract: An illumination device comprising a plurality of solid state light sources and a concentrating wave length converter arranged to inject light from said light sources through at least one entrance surface and to extract wave length converted light from at least one exit surface, comprising a structured layer provided on said exit surface, said structured layer having a structure period less than 5 micrometers, thereby enabling out-coupling through the exit surface by a combination of refraction and diffraction. In a situation where the angle of incidence on a surface is within a limited range, a combination of refraction and diffraction may provide a superior out-coupling from that surface.