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:
May. 27, 2025
Filed:
Sep. 09, 2019
Rodenstock Gmbh, Munich, DE;
Stefan Radünz, Gilching, DE;
Rüdiger Scherschlicht, Unterhaching, DE;
RODENSTOCK GMBH, Munich, DE;
Abstract
An optical element includes a substrate and an interferometric reflection-reducing layer system on at least one surface of the substrate. The layer system includes a stack of at least four successive layer packets, wherein each layer packet includes a first sub-layer with a first optical depth and a second sub-layer with a second optical depth which differs from the first optical depth. The refractive index of each first sub-layer nearer the substrate is greater than the refractive index of each second sub-layer further away from the substrate, of the respective stack, wherein the layer system has a brightness, a colorfulness, and a hue angle of a residual reflection color. The value of a change in the hue angle of the residual reflection color in a range of a viewing angle with the boundary values of 0° and 30° relative to a surface normal to the layer system is smaller than the value of a change in the colorfulness in the range of the viewing angle.