Design of a nonnull interferometer for aspheric wave fronts

John E. Greivenkamp, Robert O. Gappinger

Research output: Contribution to journalArticlepeer-review

59 Scopus citations


The presence of highly aspheric wave fronts in an interferometer leads to a need for system calibration, and this calibration requirement affects the design of the interferometer. Dynamic range, vignetting, and the ability to characterize components all must be considered during the design stages. The interferometer must be designed with respect to wave-front propagation as opposed to reference sphere aberrations. A nonnull interferometer for measurement of aspheric transmitted wave fronts has been developed, and the design process is described. Transmitted wave fronts for a conformal window and a progressive-addition bifocal lens have been measured to demonstrate the applicability of the system to aspheric testing.

Original languageEnglish (US)
Pages (from-to)5143-5151
Number of pages9
JournalApplied optics
Issue number27
StatePublished - Sep 20 2004

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics
  • Engineering (miscellaneous)
  • Electrical and Electronic Engineering


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