The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 19, 2013
Filed:
Jun. 18, 2008
Eiji Akiyama, Minato-ku, JP;
Fujio Okumura, Minato-ku, JP;
Osamu Ishibashi, Minato-ku, JP;
NEC Corporation, Tokyo, JP;
Abstract
An optical switch for switching between transmission and total reflection of incident lightapplied to electro-optical crystalby applying an electric field to electro-optical crystalto thereby change the refractive index of electro-optical crystalincludes a plurality of electrodesdisposed in electro-optical crystalto provide electrode assemblyfor applying the electric field to electro-optical crystal. Electro-optical crystalhas a refractive index changing portion (not shown) whose refractive index is changed by the electric field applied by electrode assembly, the refractive index changing portion enclosing electrode assemblyin its entirety. The refractive index changing portion has a flat refractive index boundary.