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. 19, 2013
Filed:
Dec. 08, 2011
Applicants:
Frank Wippermann, Meiningen, DE;
Jacques Duparré, Jena, DE;
Peter Dannberg, Jena, DE;
Andreas Braeuer, Schloeben, DE;
Inventors:
Frank Wippermann, Meiningen, DE;
Jacques Duparré, Jena, DE;
Peter Dannberg, Jena, DE;
Andreas Braeuer, Schloeben, DE;
Assignee:
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
G02B 7/02 (2006.01); G02B 27/10 (2006.01); G03B 21/60 (2006.01); B29D 11/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
An optical layer stack having a first layer, a second layer, a first spacer part associated with the first layer and a second spacer part associated with the second layer, wherein the two spacer parts have groove and tongue for an engagement in a stacking direction of the optical layer stack in order to provide a connection between the first and the second spacer part and a spacing of the first and the second layer in stacking direction.