Definition of optical flat

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Photonics Dictionary

optical flat: A piece of glass, pyrex or quartz having one or both surfaces carefully ground and polished plano, generally flat to less than a tenth of a wavelength. Optical flats are used in surface testing to determine the flatness of other optical surfaces using interference techniques.

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Optical Flats

Edmund Optics - Manufacturing Services 8/24 MR

AdTech Ceramics - Ceramic Packages 1-24 MR

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