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. 13, 2007
Filed:
Aug. 12, 2004
Felix Jan Grawert, Cambridge, MA (US);
Shoji Akiyama, Annaka, JP;
Kazumi Wada, Lexington, MA (US);
Franz X. Kaertner, Newton, MA (US);
Felix Jan Grawert, Cambridge, MA (US);
Shoji Akiyama, Annaka, JP;
Kazumi Wada, Lexington, MA (US);
Franz X. Kaertner, Newton, MA (US);
Massachusetts Institute of Technology, Cambridge, MA (US);
Abstract
An optical reflector includes an optical reflective element that comprises alternating layers of high and low index layers. A new substrate is bonded on the optical reflective element. The sequence of layers in the reflective element is reversed in order such that the layers grown first with lowest surface roughness are exposed to the highest electric field strength, and the layer grown last, of highest roughness, are buried deep in the multilayer stack.