Patent ID: 6754002
Filing Date: 2004-06-22
Classification: C03B,C03C,G03F

Abstract:
A lithography system comprising:a pulsed ultraviolet radiation source for producing ultraviolet lithography radiation having a wavelength shorter than about 300 nm at a fluence of less than 10 mJ/cm2/pulse; a lithography pattern forming subsystem configured to produce a lithography pattern of the ultraviolet lithography radiation; at least one reducing optical element configured to reduce the size of the lithography pattern; and at least one projecting optical element configured to manipulate the reduced lithography pattern, wherein at least one reducing optical element or projecting optical element is a synthetic glass optical member comprising a high purity fused silica glass having a concentration of molecular hydrogen of between about 0.02 Ã—1018 molecules/cm3 and 0.1 Ã—1018 molecules/cm3.