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:
Sep. 22, 2015
Filed:
Mar. 02, 2012
Applicants:
Kazuhiko Aoki, Tokyo, JP;
Masahiko Ohta, Tokyo, JP;
SO Nishimura, Tokyo, JP;
Yoshiho Yanagita, Tokyo, JP;
Osamu Ishibashi, Tokyo, JP;
Fujio Okumura, Tokyo, JP;
Inventors:
Kazuhiko Aoki, Tokyo, JP;
Masahiko Ohta, Tokyo, JP;
So Nishimura, Tokyo, JP;
Yoshiho Yanagita, Tokyo, JP;
Osamu Ishibashi, Tokyo, JP;
Fujio Okumura, Tokyo, JP;
Assignee:
NEC CORPORATION, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G03B 21/14 (2006.01); G09G 3/02 (2006.01); H04N 9/31 (2006.01); G03B 21/60 (2014.01); G03B 21/56 (2006.01);
U.S. Cl.
CPC ...
G03B 21/14 (2013.01); G03B 21/56 (2013.01); G03B 21/60 (2013.01); G09G 3/02 (2013.01); H04N 9/3129 (2013.01); G03B 2206/00 (2013.01);
Abstract
A projection screen includes: phosphor regions arranged cyclically in an in-plane direction of a display region; a plurality of black stripes and reference black stripes that partition the display region into the phosphor regions; and an optical information formation unit that is provided in a specific position within the display region and that generates readable optical information.