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:
Apr. 17, 2018
Filed:
Jun. 27, 2016
Applicant:
Dexerials Corporation, Tokyo, JP;
Inventor:
Nobuyuki Koike, Tokyo, JP;
Assignee:
DEXERIALS CORPORATION, Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G02B 5/30 (2006.01); G02B 27/28 (2006.01); B05D 5/06 (2006.01); C23C 14/08 (2006.01); C23C 14/58 (2006.01); G02F 1/01 (2006.01); G02F 1/13363 (2006.01); C23C 14/22 (2006.01); G02B 5/32 (2006.01);
U.S. Cl.
CPC ...
G02B 5/3083 (2013.01); C23C 14/083 (2013.01); C23C 14/226 (2013.01); C23C 14/5806 (2013.01); C23C 14/5886 (2013.01); G02F 1/0126 (2013.01); G02F 1/13363 (2013.01); C23C 14/225 (2013.01); G02B 5/32 (2013.01); G02F 2202/13 (2013.01); Y10T 428/24612 (2015.01);
Abstract
A phase difference element has a transparent substrate and a birefringent film with tantalum oxide and titanium oxide obliquely deposited on one surface of the transparent substrate. The birefringent film has a first photorefractive film and a second photorefractive film laminated to each other and having different oblique deposition directions. The ratio of titanium atoms to the total of titanium atoms and tantalum atoms in the birefringent film is 4.0 atomic % or higher to 30 atomic % or lower.