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:
Sep. 26, 2012
Applicants:
Nikon Corporation, Tokyo, JP;
National Institute for Materials Science, Tsukuba-shi, Ibaraki, JP;
Inventors:
Assignees:
NIKON CORPORATION, Tokyo, JP;
NATIONAL INSTITUTE FOR MATERIALS SCIENCE, Ibaraki, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G02B 7/02 (2006.01); G02F 1/355 (2006.01); G02F 1/35 (2006.01);
U.S. Cl.
CPC ...
G02F 1/3558 (2013.01); G02F 2001/3505 (2013.01); G02F 2201/46 (2013.01); Y10T 29/49826 (2015.01);
Abstract
According to one embodiment, an optical element is provided with a paraelectric crystal, first and second pressers between which the paraelectric crystal is sandwiched, and fasteners. The paraelectric crystal has a periodic structure in which polarities are periodically inverted along a polarity period direction. The fasteners fix the first and second pressers to each other so that a predetermined pressure is applied in a direction intersecting with the polarity period direction, to the paraelectric crystal through the first and second pressers.