Patent · US Active

Apparatus and method for calibrating extreme ultraviolet spectrometer

US9188484B2 · kind B2 · utility

1Cited by
1References
9Claims
0Family size

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Key dates

Filing dateMar 26, 2014
Grant dateNov 17, 2015
Priority date
Expiry dateMar 26, 2034

Classification

  • Technology area (CPC G)Physics
  • CPC primaryG03F7/70616
  • WIPO fieldOptics
  • WIPO sectorInstruments

Abstract

Provided are an apparatus and method for calibrating an extreme ultraviolet (EUV) spectrometer in which a wavelength of a spectrum of EUV light used for EUV lithography and mask inspection technology can be measured accurately.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.