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. 27, 2014
Filed:
Feb. 22, 2010
Applicants:
Akiko Murata, Osaka, JP;
Yuka Okada, Hyogo, JP;
Inventors:
Akiko Murata, Osaka, JP;
Yuka Okada, Hyogo, JP;
Assignee:
Panasonic Corporation, Osaka, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G02B 5/18 (2006.01); G02B 27/42 (2006.01);
U.S. Cl.
CPC ...
G02B 27/4211 (2013.01); G02B 5/1814 (2013.01);
Abstract
A diffractive optical element according to the present invention includes: a bodybeing composed of a first optical material containing a first resin, and having a diffraction gratingon a surface thereof; and an optical adjustment layerbeing composed of a second optical material containing a second resin, and provided on the body so as to cover the diffraction grating. A difference between a solubility parameter of the first resin and a solubility parameter of the second resin is 0.8 [cal/cm]or more, and the first resin and the second resin each have a benzene ring.