Temporary protective varnishes for optical components

Abstract

Provided is a paint composition comprising 20-79.9% by weight of a thiol compound having two or more thiol groups based on the total weight of the composition, 20-79.9% by weight based on the total weight of the composition Compounds having two or more carbon-carbon double bonds, and 0.1-10% by weight, based on the total weight of the composition, of release agents having an alkyl group having 4-20 carbon atoms, wherein the alkyl group is not substituted or substituted by fluorine, and the alkyl group is attached to the functional group. Also provided is the use of the lacquer composition as a protective varnish on the optical surface of the optical element during the manufacture of the optical element, and an optical element comprising the protective varnish.

Description

technical field [0001] The invention relates to a lacquer composition from which a protective lacquer can be produced by polymerization and to its use as a temporary protective lacquer for optical surfaces of optical elements. The invention also relates to optical elements comprising a protective varnish. Background technique [0002] Complex optical components, such as those in data glasses for recording image information, often contain different functional surfaces in the tightest spaces and in close proximity. Thus, it may happen that the transmissive coupling-in surface is located directly in the vicinity of the reflective surface. Typically, during the manufacture of such optics, non-functional surfaces are coated with an absorbing varnish, such as highly absorbing black lacquer, which will eliminate stray light. In this case, absorbing varnish is advantageously also applied to the highly reflective surfaces in order to protect them from the environment. [0003] The...

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Problems solved by technology

Therefore, it may happen that the transmissive coupling-in surface is directly adjacent to the reflective surface

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