Intellectual Property Law

US Patent 7772551 - Variable refractive index element formed using quantum dots

This patent from Toshiba suggests a refractive optical switching device based on a quantum dot material. Claim 1 reads:

1. A refractive index variable element, comprising:

a structure including quantum dots having discrete energy levels and a dielectric matrix surrounding the quantum dots; and

an electron discharger discharging an electron from the quantum dots through the dielectric matrix to convert the quantum dots into cations.

Full post as published by TinytechIP on August 16, 2010 (boomark / email).