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:
Aug. 07, 2018
Filed:
Jun. 27, 2014
Dexerials Corporation, Shinagawa-ku, JP;
Koji Sasaki, Shinagawa-ku, JP;
Masatoshi Sasaki, Shinagawa-ku, JP;
Nobuyuki Koike, Shinagawa-ku, JP;
Akio Takada, Shinagawa-ku, JP;
Katsuhiro Shindo, Shinagawa-ku, JP;
Toshiaki Sugawara, Shinagawa-ku, JP;
Kouichi Miyagi, Shinagawa-ku, JP;
Masahiro Oowada, Shinagawa-ku, JP;
DEXERIALS CORPORATION, Shinagawa-ku, JP;
Abstract
This invention provides a polarization conversion element that is highly resistant to the heat and light that result from increased brightness levels. In said polarization conversion element, inorganic half-wave plates provided selectively on the output surface of a polarizing beam-splitter array have obliquely deposited layers comprising a dielectric material and the side surfaces of said obliquely deposited layers are covered by protective films.