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:
Feb. 01, 2011
Filed:
Oct. 05, 2007
Applicants:
Sunao Kurimura, Kurimura, JP;
Tsuyoshi Yamada, Toyota, JP;
Inventors:
Sunao Kurimura, Kurimura, JP;
Tsuyoshi Yamada, Toyota, JP;
Assignees:
National Institute for Materials Science, Tsukuba-shi, JP;
Nidek Co., Ltd., Gamagori-shi, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
A61B 19/00 (2006.01); G02F 1/35 (2006.01);
U.S. Cl.
CPC ...
Abstract
A manufacturing method for quasi phase matching (QPM) wavelength converter elements using crystal quartz as a base material in which twins are periodically induced, comprises a step of periodically inducing the twins by applying a stress onto a crystal quartz substrate as the base material so that an angle θ of a direction in which the stress is applied relative to a Z axis of the crystal quartz is 60°<θ<90°.