Method and device for decontaminating optical surfaces

A method and a device for decontaminating optical surfaces, in particular for decontaminating the surfaces of beam-guiding optics employing UV-radiation in a cleansing atmosphere. The wavelength of the UV-radiation employed falls within a range where oxygen strongly absorbs and the cleansing atmosph...

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Bibliographische Detailangaben
Hauptverfasser:	MUEHLPFORDT ANNETTE, THIER MICHAEL, PAZIDIS ALEXANDRA, WIESNER STEFAN, LUEDECKE JENS, ULLMANN JENS, ZAZCEK CHRISTOPH
Format:	Patent
Sprache:	eng
Schlagworte:	APPARATUS SPECIALLY ADAPTED THEREFOR BASIC ELECTRIC ELEMENTS CINEMATOGRAPHY CLEANING CLEANING IN GENERAL ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR ELECTRICITY ELECTROGRAPHY HOLOGRAPHY MATERIALS THEREFOR ORIGINALS THEREFOR PERFORMING OPERATIONS PHOTOGRAPHY PHOTOMECHANICAL PRODUCTION OF TEXTURED OR PATTERNED SURFACES,e.g. FOR PRINTING, FOR PROCESSING OF SEMICONDUCTORDEVICES PHYSICS PREVENTION OF FOULING IN GENERAL SEMICONDUCTOR DEVICES TRANSPORTING
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Beschreibung
Zusammenfassung:	A method and a device for decontaminating optical surfaces, in particular for decontaminating the surfaces of beam-guiding optics employing UV-radiation in a cleansing atmosphere. The wavelength of the UV-radiation employed falls within a range where oxygen strongly absorbs and the cleansing atmosphere has an oxygen concentration less than that of air. The method and device have application to, e.g., cleaning the surfaces of the beam-guiding optics of microlithographic projection-exposure systems.