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. 16, 2015
Filed:
Apr. 19, 2013
Applicant:
Jvc Kenwood Corporation, Yokohama-shi, Kanagawa, JP;
Inventor:
Kazutaka Aboshi, Yokohama, JP;
Assignee:
JVC KENWOOD CORPORATION, Yokohama-Shi, Kanagawa, JP;
Primary Examiner:
Int. Cl.
CPC ...
G02F 1/1335 (2006.01); G02F 1/13363 (2006.01); G02B 5/30 (2006.01); G03B 21/00 (2006.01); G03B 33/12 (2006.01); H04N 9/31 (2006.01); G03B 21/20 (2006.01); G02F 1/1362 (2006.01);
U.S. Cl.
CPC ...
G02F 1/13363 (2013.01); G02B 5/3083 (2013.01); G02F 2001/133548 (2013.01); G02F 2001/133631 (2013.01); G03B 21/006 (2013.01); G03B 33/12 (2013.01); H04N 9/3167 (2013.01); G02F 2001/136281 (2013.01); G02F 2202/40 (2013.01); G02F 2413/09 (2013.01); G02F 2413/11 (2013.01); G03B 21/2073 (2013.01);
Abstract
A distribution-type compensator has an in-plane retardation of 18 nm±5 nm in a rectangular effective region with a long side and a short side. The slow axis direction of the distribution-type compensator changes continuously in a plane of the effective region and an angle difference between slow axis directions at any two positions in the effective region has a maximum value in a range of 10 degrees to 30 degrees. The distribution-type compensator is mounted to a projection-type display apparatus.