Carl Zeiss Vision International Gmbh

Carl Zeiss Vision Gmbh

Andreas Neuffer

Joerg Puetz

Thomas Glöge

Markus Haidl

Michael Krause

Bernhard Von Blanckenhagen

Norbert Hugenberg

Frank Macionczyk

Stefan Kraus

Thomas Gloege

Michael Krieger

Bin Peng

Adalbert Hanssen

Erwin Green

Karl-Heinz Winter

Silvia Faul

Anja Petereit

Patrick Kiefer

Marc Stroisch

Adalbert Hanßen

Artur Laukart

Lothar Holz

Anja Kollo

Dr Jörg PÜTZ

The present invention relates to an optical lens having a lens element produced of plastic, more particularly of plastic which is transparent in a visible spectral range, and having a coating comprising a plurality of layers, the plurality of layers comprising at least one high-refractive-index layer. Furthermore, a hardcoat layer is formed adjacent to the lens element, and a superhydrophobic layer concludes the coating in opposition to the lens element. The at least one high-refractive-index layer has a thickness of less than 40 nm, and the coating overall has a thickness of more than about 380 nm.

Optical lens with scratch-resistant anti-reflective layer

Determining a barrier effect of a coating for a medium includes: providing a substrate having the coating on its surface, the substrate undergoing a volume change on contact with the medium; conditioning the substrate with the coating; removing the coating from a first part of the surface, leaving the coating on a second part, the first part having an extent in a first direction delimited by the coating remaining on the second; determining a height profile of the coating on the second part and the first part on a path in the first direction; exposing the remaining coating and the first part to the medium; determining a second height profile of the coating on the second part and the first part on the path in the first direction and/or determining a difference in height profile on the second and first part with respect to the height profile determined beforehand.

Method and apparatus for determining a barrier effect of a coating on a substrate

An optical element has a substrate body made from transparent plastic and a coating having multiple layers. The coating includes a hard lacquer layer adjoining the substrate. The coating has a diffusivity ensuring the absorption of water molecules passing through the coating in the substrate and the release of water molecules from the substrate through the coating from an air atmosphere on that side of the coating facing away from the substrate with a flow density which, proceeding from the equilibrium state of the quantity of water molecules absorbed in the substrate in an air atmosphere at 23&#xb0; C. and 50% relative humidity, brings the setting of the equilibrium state of the quantity of water molecules absorbed in the substrate in an air atmosphere at 40&#xb0; C. and 95% relative humidity within an interval not more than 10 h longer than for setting this equilibrium under corresponding conditions with an identical uncoated substrate.

Optical element having a coating of high diffusivity

The present invention relates to an optical lens, in particular for use as a spectacle lens, having a lens element and a coating for producing an antistatic effect, said coating being applied onto the lens element and having a plurality of layers. Further, the antistatic effect is provided by two layers adjoining one another, wherein at least one of the two layers adjoining one another is formed in a non-stoichiometric fashion. Furthermore, the present invention relates to a method for producing a corresponding optical lens.

Optical lens with antistatic coating

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Asperg, Germany

Andreas Neuffer