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:
Jun. 18, 2019
Filed:
Jul. 05, 2018
Seiko Epson Corporation, Tokyo, JP;
Kunihiko Yano, Shiojiri, JP;
Seiko Epson Corporation, Tokyo, JP;
Abstract
An optical element includes a first translucent member that contains a resin material and a half mirror film formed on a surface of the first translucent member. The half mirror film includes a silver film, a first dielectric multilayer film positioned between the silver film and the first translucent member, and a second dielectric multilayer film positioned on an opposite side of the silver film than the first translucent member. The first dielectric multilayer film includes a first aluminum oxide film in contact with the silver film, and a titanium oxide film in contact with the first aluminum oxide film on the first translucent member. The second dielectric multilayer film includes a zirconium oxide-based dielectric film and a second aluminum oxide film in contact with the zirconium oxide-based dielectric film. One of the second aluminum oxide film and the zirconium oxide-based dielectric film is in contact with the silver film.