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:
Oct. 08, 2013
Filed:
May. 12, 2011
Applicants:
Jun Amako, Matsumoto, JP;
Kohei Yamada, Minowa, JP;
Inventors:
Jun Amako, Matsumoto, JP;
Kohei Yamada, Minowa, JP;
Assignee:
Seiko Epson Corporation, , JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G02B 5/30 (2006.01); G01J 3/44 (2006.01);
U.S. Cl.
CPC ...
Abstract
An optical device includes a projection group in which electrically conductive projections are arranged along a direction parallel to a virtual plane. The arrangement period of the projections in the projection group includes at least a first period and a second period different from the first period. The first period and the second period are shorter than a wavelength of an incident light.