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:
Aug. 11, 2015
Filed:
Jul. 25, 2014
Applicant:
Huazhong University of Science and Technology, Wuhan, CN;
Inventors:
Shiyuan Liu, Wuhan, CN;
Honggang Gu, Wuhan, CN;
Xiuguo Chen, Wuhan, CN;
Chuanwei Zhang, Wuhan, CN;
Weiqi Li, Wuhan, CN;
Weichao Du, Wuhan, CN;
Assignee:
HUAZHONG UNIVERSITY OF SCIENCE AND TECHNOLOGY, Wuhan, CN;
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
G01J 3/28 (2006.01); G01B 11/27 (2006.01); G02B 5/30 (2006.01); G02B 27/62 (2006.01);
U.S. Cl.
CPC ...
G01B 11/272 (2013.01); G02B 5/3083 (2013.01); G02B 27/62 (2013.01);
Abstract
An alignment method for optical axes of a composite waveplate includes rotating a rotatable waveplate, which rotates about a central axis with respect to a fixed waveplate, and adjusting the rotation angle thereof until the differences between the spectral parameters of the composite waveplate and ideal spectral parameters are smaller than preset values.