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:
Nov. 18, 2014
Filed:
Oct. 04, 2010
Applicants:
Hiroyuki Minemura, Kokubunji, JP;
Yumiko Anzai, Saitama, JP;
Hideharu Mikami, Kawaskai, JP;
Inventors:
Assignee:
Hitachi, Ltd., Tokyo, JP;
Primary Examiner:
Int. Cl.
CPC ...
G02B 5/30 (2006.01); H01Q 1/38 (2006.01); G02B 5/08 (2006.01); H01Q 9/04 (2006.01);
U.S. Cl.
CPC ...
G02B 5/3058 (2013.01); H01Q 1/38 (2013.01); G02B 5/085 (2013.01); H01Q 9/0407 (2013.01);
Abstract
The present invention provides a small and inexpensive optical element that integrates a reflecting mirror and a wave plate function. A reflecting wave plate is configured by arranging a periodic metal comb-like structure whose pitch is equal to or below a wavelength and a mirror structure with a distance equal to or below a coherence length.