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:
Nov. 28, 2023
Filed:
Jan. 18, 2021
Applicant:
Orell Füssli Ag, Zürich, CH;
Inventors:
Martin Eichenberger, Zollikon, CH;
Guillaume Basset, Huningue, FR;
Assignee:
ORELL FÜSSLI AG, Zürich, CH;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B42D 25/00 (2014.01); G02B 6/00 (2006.01); B42D 25/309 (2014.01); B42D 25/351 (2014.01); G02B 6/34 (2006.01); B42D 25/23 (2014.01); B42D 25/24 (2014.01);
U.S. Cl.
CPC ...
B42D 25/309 (2014.10); B42D 25/351 (2014.10); G02B 6/34 (2013.01); B42D 25/23 (2014.10); B42D 25/24 (2014.10);
Abstract
The security document, such as a passport, comprises a lightguide having an incoupler structure and in outcoupler structure. The outcoupler structure is sparse in the sense that any part of the protective area is close to a part of the outcoupler structure. However, to secure a large protective area with a limited amount of incoupled light, outcoupler structure covers no more than 20% of the protective area. This allows to protect a large area of the security document, such as a photograph or other personalized information, by means of the lightguide.