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:
May. 07, 2013
Filed:
Feb. 05, 2009
Applicants:
Masakiyo Matsumura, Yokohama, JP;
Yukio Taniguchi, Yokohama, JP;
Inventors:
Masakiyo Matsumura, Yokohama, JP;
Yukio Taniguchi, Yokohama, JP;
Assignee:
Dai Nippon Printing Co., Ltd., Tokyo-To, JP;
Primary Examiner:
Int. Cl.
CPC ...
C30B 35/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
A phase modulation element according to the present invention has a first area having a first phase value based on a phase modulation unit having a predetermined size and a second area having a second phase value based on the phase modulation unit having the predetermined size, and each phase distribution is defined by a change in area shares of the first area and the second area depending on each position.