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OPTICAL FLATS

Photonics Spectra
Nov 2008
Tower Optical Corp.Request Info
 
TowerOptical.jpgTower Optical Corp. is offering optical flats made from BK7 or fused silica. They are used as a reference against which the flatness of an unknown surface can be determined and also as windows. The fused silica types are available in single- and double-sided versions and maintain a flatness of λ/10 or λ/20. Their diameters range from 25 to 200 mm with λ/10 flatness. The BK7 types offer flatness of λ/4 or better.


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GLOSSARY
fused silica
Glass consisting of almost pure silicon dioxide (SiO2). Also called vitreous silica. Frequently used in optical fibers and windows.
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