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Large field of view protection optical system with aberration correctability for flat panel displays

  • US 7,158,215 B2
  • Filed: 04/26/2004
  • Issued: 01/02/2007
  • Est. Priority Date: 06/30/2003
  • Status: Expired due to Fees
First Claim
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1. An exposure system, comprising:

  • a reticle stage adapted to support a reticle that is configured to pattern a beam of radiation;

    a substrate stage adapted to support a substrate;

    a reflective optical system adapted to direct the patterned beam onto said substrate, said reflective optical system comprising a primary mirror including a first mirror and a second mirror, and a secondary mirror;

    a first optical device including a parallel glass plate, a parallel glass plate and meniscus lens pair, a nominally flat mirror with an aspheric profile, or a powered mirror located between the reticle stage and the primary mirror; and

    a second optical device including a parallel glass plate, a parallel glass plate and meniscus lens pair, a nominally flat mirror with an aspheric profile, or a powered mirror located between the substrate stage and the primary mirror.

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