Carl Zeiss Vision International Gmbh

Basf Se Corporation

Thomas Gloege

Norbert Hugenberg

Stefan Kraus

Michael Krause

Bernhard Von Blanckenhagen

Bernd Bruchmann

Gerhard Kelch

Joerg Puetz

Timo Mappes

Christine Roesch

Markus Haidl

Christina Haaf

Frank Macionczyk

Markus Hickl

Horst Hintze-Bruening

Andreas Neuffer

Christian Lappe

Adalbert Hanssen

Michael Krieger

Bin Peng

Erwin Green

Karl-Heinz Winter

Silvia Faul

Lothar Holz

Anja Petereit

Bernhard Von Blankenhagen

Patrick Kiefer

Marc Stroisch

Ruediger Stark

Dirk Schmelter

The present invention relates to an optical component having a crosslinked anti-fog coating obtainable by covalent attachment of a silane derivative of the formula (2) to the surface of the optical component and crosslinking of adjacent molecules:RXSiB&#x2003;&#x2003;(2)whereinm=1 to 3, n=1 or 2 and o=0 or 1, with the proviso that m+n+o=4;the radical X is selected from halogen or C-alkoxy, andfor m=2 or 3 the individual radicals X may be identical or different,the radical R is C-alkyl,the radical B has the structure -B1-B2, in which -B2 is a terminal hydrophilic group which is crosslinked to at least one hydrophilic group of an adjacent molecule of the anti-fog coat, and -B1- represents either a spacer group, which joins the hydrophilic group B2 to the Si atom, or a covalent bond,where the terminal hydrophilic group -B2 is poly(meth)acrylate, and for n=2 the individual radicals B may be identical or different.

Anti-fog coating

A spectacle lens is disclosed that includes a lens substrate and a coating that is applied onto the lens substrate. The coating has a first reflectivity of at least 20% for near infrared light at a first wavelength &#x3bb;, which impinges on the coating at an angle of incidence of 0&#xb0;, and a second reflectivity for near infrared light at the first wavelength &#x3bb;, which impinges on the coating at an angle of incidence of 35&#xb0;, the second reflectivity being reduced by at least 10% in relation to the first reflectivity. The present disclosure further relates to a computer-implemented or experimental method for designing such a spectacle lens and a corresponding method for producing a spectacle lens.

Spectacle lens with a coating, method for producing a spectacle lens and computer-implemented or experimental method for designing a spectacle lens

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

An optical component having an anti-fog coating obtainable by covalent attachment of a silane having the formula (1): RXSiAto the surface of the optical component. The covalent attachment of the compound of the formula (1) to the surface of the optical component is accomplished by reacting at least one of the reactive, hydrolyzable &#x2014;Si&#x2014;X&#x2014; groups with a suitable reactive surface group, for example, an &#x2014;OH group, to form &#x2014;Si&#x2014;O&#x2014;.

The present invention relates to silylated amino resins, to processes for preparing them, to their use, and to coating compositions comprising them.

Silylated amino resins

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Aalen, Germany

Thomas Gloege