Patent ID: 7378666
Filing Date: 2008-05-27
Classification: G01J,G03F,G21K

Abstract:
1. A device comprising: a chamber for receiving an object; an EUV radiation source for directing a beam through a beam path toward the object, the EUV radiation source comprising a laboratory source for EUV radiation; an optical system for filtering radiation from the EUV radiation source, the optical system having at least one filter for suppressing undesirable spectral components of the radiation and also at least one mirror for spectrally filtering in-band EUV radiation; a plurality of closable diaphragm apertures located in the beam path, the plurality of closable diaphragm apertures enabling a temporal control of irradiation of irradiation fields that lie on the object and are situated downstream of the diaphragm apertures; and at least one monitor detector arranged downstream of the optical system in the direction of the beam path, the monitor detector detecting an irradiation dose during irradiation.