Optical bandpass filter using INTERACTION OF TRANSPARENCY AND extinction at electric dipole resonance

摘要

An optical bandpass filter, which is a plate of optical glass or optical plastic, characterized in that it comprises a suspension of particles whose size lies in the range 10-100 nm (nanoparticles) of spherical or ellipsoidal form metal shells containing inside the insulating core, wherein the core radii and shells so chosen as well as the plate material, core material and sheath material are dielectric constant such that at a predetermined wavelength are provided conditions reason plasmon ansa or conditions of invisibility (transparency).