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:
Dec. 18, 2018
Filed:
May. 03, 2012
Applicants:
Martynas Beresna, South Hampton, GB;
Peter Kazansky, South Hampton, GB;
Inventors:
Martynas Beresna, South Hampton, GB;
Peter Kazansky, South Hampton, GB;
Assignee:
University of Southampton, Southampton, GB;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G02B 5/30 (2006.01); G02B 5/18 (2006.01); G02B 27/28 (2006.01);
U.S. Cl.
CPC ...
G02B 5/3083 (2013.01); G02B 5/1809 (2013.01); G02B 27/286 (2013.01);
Abstract
This patent describes an optical element, which converts incident linearly or circularly polarized visible light into radially or azimuthally polarized light beam. The polarization converter is a single optical element, produced by direct laser writing technique in an optically transparent substrate. Direct laser writing based on ultra-short pulsed laser radiation forms form birefringence self-assembled nanogratings in optically transparent material, such as fused silica. The period of gratings is smaller than wavelengths of a visible light.