The use of Newton's rings for characterising ophthalmic lenses

@article{Illueca1998TheUO,
  title={The use of Newton's rings for characterising ophthalmic lenses},
  author={C. Illueca and C. V{\'a}zquez and C. Hern{\'a}ndez and V. Viqueira},
  journal={Ophthalmic and Physiological Optics},
  year={1998},
  volume={18}
}
The interference technique of Newton's Rings is widely used for the quality control of optical surfaces because the precision obtained with this method proves to be very satisfactory. The dimensions of the rings permits calculation of the radii of curvature of the analysed surfaces and deformation of the interference pattern can be utilised to calculate other parameters, such as astigmatism. We describe the study of progressive surfaces by means of this technique, whereby the analysis of the… Expand

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