An optical attenuator device operates to remove a part of a beam of radiation having a higher than average intensity using at least one optical attenuator element. The device has application in a radiation system, and/or a lithographic apparatus, in particular a scanning lithographic apparatus, wherein the optical attenuator element(s) are provided in a central part of the beam, for example perpendicularly to a scanning direction.

 
Web www.patentalert.com

< Nucleic acids and corresponding proteins entitled 282P1G3 useful in treatment and detection of cancer

< Isolated nucleic acid molecules which encode peptides which bind to MHC class II molecules, such as HLA-DR53

> Antibodies binding to polypeptides encoded by developmentally-regulated endothelial cell locus-1

> Anti-idiotype antibodies to MN proteins and MN polypeptides
~ 00254