Definition of etalon in English:
A device consisting of two reflecting plates for producing interfering light beams.
- The change in resonance frequency of the etalon measures the change in optical-path length.
- We specialize in very large aperture etalons with diameters up to 150 mm.
- Our products range from simple condenser lenses to precision etalons.
early 20th century: from French étalon, literally 'standard of measurement'.
Definition of etalon in:
- British & World English dictionary
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