optical flat
optical flat · optical flats
A disk of high-quality quartz glass having at least one side ground and polished with…A disk of high-quality quartz glass having at least one side ground and polished with a deviation in flatness less than 50 nanometers all over, and a surface quality of 5 microfinish or less; used, in an interferometer, to measure the flatness of other surfaces.
Meaning
1 sensesA disk of high-quality quartz glass having at least one side ground and polished with a deviation in flatness less than 50 nanometers all over, and a surface quality of 5 microfinish or less; used, in an interferometer, to measure the flatness of other surfaces.
Forms
plural: optical flats| Singular | optical flat |
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| Plural | optical flats |
regular