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Related Experiment Videos

Design of a nonnull interferometer for aspheric wave fronts.

John E Greivenkamp1, Robert O Gappinger

  • 1Optical Sciences Center, University of Arizona, 1630 East University Boulevard, Tucson, Arizona 85721, USA. greiven@arizona.edu

Applied Optics
|October 12, 2004
PubMed
Summary

System calibration is crucial for interferometers measuring aspheric wave fronts. A new non-null interferometer design accounts for wave-front propagation, enabling accurate testing of components like lenses and windows.

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Area of Science:

  • Optical engineering
  • Metrology

Background:

  • Interferometers require calibration when measuring highly aspheric wave fronts.
  • System design must address dynamic range, vignetting, and component characterization.

Purpose of the Study:

  • To develop a non-null interferometer for measuring aspheric transmitted wave fronts.
  • To describe the design process for such an interferometer.

Main Methods:

  • Designing an interferometer based on wave-front propagation, not reference sphere aberrations.
  • Implementing a non-null design for aspheric wave front measurement.

Main Results:

  • A non-null interferometer system was successfully developed.
  • The system demonstrated applicability by measuring aspheric transmitted wave fronts for a conformal window and a progressive-addition bifocal lens.

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Conclusions:

  • The developed non-null interferometer effectively measures aspheric transmitted wave fronts.
  • The design considerations enable accurate characterization of optical components with aspheric surfaces.