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Proceedings Paper

Use of nematic thin-film coatings for visualizing the defects on polished glass surfaces
Author(s): Maxim Georg Tomilin; Raymond Mercier; Jean-Paul Marioge; Michel Mullot; Gerard Tissot; L. Bernstein; Gerard Roblin
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Paper Abstract

A thin layer of homogeneously oriented nematic liquid crystal (NLC) applied on the optical-quality surface as a free film may visualize, through a polarizing microscope, the images of defects that can not be observed with conventional microscopy: cleaning defects, local physical and chemical surface modifications and microrelief defects. A new vision of polished glass surface defects obtained by the NLC thin-film coating makes it valuable as independent technique for surface quality testing.

Paper Details

Date Published: 7 September 1994
PDF: 8 pages
Proc. SPIE 2262, Optical Thin Films IV: New Developments, (7 September 1994); doi: 10.1117/12.185783
Show Author Affiliations
Maxim Georg Tomilin, S.I. Vavilov State Optical Institute (Russia)
Raymond Mercier, Institute of Theoretical and Applied Optics (France)
Jean-Paul Marioge, Institute of Theoretical and Applied Optics (France)
Michel Mullot, Institute of Theoretical and Applied Optics (France)
Gerard Tissot, Institute of Theoretical and Applied Optics (France)
L. Bernstein, Institute of Theoretical and Applied Optics (France)
Gerard Roblin, Institute of Theoretical and Applied Optics (France)


Published in SPIE Proceedings Vol. 2262:
Optical Thin Films IV: New Developments
James D. Rancourt, Editor(s)

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