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Lithographic apparatus and device manufacturing method

  • US 6,989,886 B2
  • Filed: 06/08/2004
  • Issued: 01/24/2006
  • Est. Priority Date: 06/08/2004
  • Status: Active Grant
First Claim
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1. A lithographic apparatus, comprising:

  • an illumination system that supplies a projection beam of radiation;

    a patterning system that patterns the projection beam; and

    a projection system that projects the patterned beam along a predetermined beam path onto a target portion of a substrate, the projection system comprising,an array of lenses located such that each lens in the array of lenses directs a respective portion of the patterned beam towards a respective part of the target portion of the substrate, anda series of lens components spaced apart along the beam path between the patterning system and the array of lenses,wherein the series of lens components are dimensioned to collect at least third order diffraction components of the patterned beam.

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