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:
Jan. 26, 2021
Filed:
May. 23, 2016
Applicant:
Rolic Ag, Zug, CH;
Inventors:
Julien Martz, Mulhouse, FR;
Hubert Seiberle, Weil am Rhein, DE;
Assignee:
ROLIC AG, Zug, CH;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G02B 5/30 (2006.01); G02B 27/28 (2006.01); B42D 25/391 (2014.01); B42D 25/29 (2014.01); B42D 25/351 (2014.01); B42D 25/373 (2014.01); B42D 25/425 (2014.01); B42D 25/309 (2014.01); B42D 25/364 (2014.01);
U.S. Cl.
CPC ...
B42D 25/391 (2014.10); B42D 25/29 (2014.10); B42D 25/309 (2014.10); B42D 25/351 (2014.10); B42D 25/364 (2014.10); B42D 25/373 (2014.10); B42D 25/425 (2014.10); G02B 5/305 (2013.01); G02B 5/3016 (2013.01); G02B 5/3083 (2013.01); G02B 27/286 (2013.01);
Abstract
The invention relates to an optical device comprising two patterned retarders and a reflective polarizer between the retarders. Information which is stored in the pattern of the retarders can be observed both in transmission and reflection. The device according to the invention can be used as high security element, for example for banknotes.