Frequently Asked Questions

Precision optical flats are used as a reference against which the flatness of an unknown surface can be determined.

Precision optical flats are made from Fused Silica or BK7.

Tower's BK7 optical flats have a flatness specified as λ/4 or better.

Tower offers both single and double sided optical flats.

Tower's precision optical flats range from 25mm to 200mm in diameter and have a thickness tolerance of ±1.5mm.

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