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Verfahren zum Erzeugen einer lichtundurchlaessigen Schicht auf einer Umfangsflaeche eines optischen Bauteils

Process for the production of an opaque coating on a circumferential surface of an optical component
 
: Gebhardt, A.

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Frontpage ()

DE 1992-4220912 A: 19920625
DE 1992-4220912 A: 19920625
DE 4220912 C1: 19930722
G02B0001
German
Patent, Electronic Publication
Fraunhofer IOF ()

Abstract
The invention relates to a process for the production of an opaque coating on a circumferential surface of an optical component, in particular on the edge of a lens, whereby a black coating is applied to the circumferential surface. The invention proposes an improvement to said process by preventing air inclusions between the black coating applied to the circumferential surface and the circumferential surface, furthermore to reduce the stress exerted on optical component by the process which would otherwise impair the desired optical characteristics through the occurrence of internal stresses. This is achieved by the invention in that, after application of the black coating, the optical component is subjected to the influence of microwave radiation which then heats the black coating, melts it and finally cures it by heat or bakes it on the circumferential surface of the component.

: http://publica.fraunhofer.de/documents/PX-38828.html