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:
Apr. 14, 2015
Filed:
Mar. 17, 2009
Applicants:
Ernst-bernhard Kley, Jena, DE;
Uwe Detlef Zeitner, Weimar, DE;
Inventors:
Ernst-Bernhard Kley, Jena, DE;
Uwe Detlef Zeitner, Weimar, DE;
Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G02B 5/18 (2006.01);
U.S. Cl.
CPC ...
G02B 5/1847 (2013.01); G02B 5/18 (2013.01); G02B 5/1814 (2013.01); G02B 5/1866 (2013.01);
Abstract
The present invention relates to the creation of a diffractive element that has a high degree of wavefront flatness. The diffractive element has a flat functional substrate with a first side, whereby a fine structure is arranged on or in this first side, and whereby the first side of this functional substrate is arranged on a flat carrier substrate, whereby the carrier substrate has a higher degree of rigidity than the functional substrate.