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Optical Flats PRODUCTS >> Optical Flats
Double Sides Optical Flat
For Double Sides Optical flats, it is the same material in BK7 or Fused Silica, with low expension to make sure the two surface flatness durable and long term using. With the professional wooden packing, these can be provided with the polishing machine to customer for calibration, easier for storage and using. Or used as flatness standard to test the optical parts flatness.

MaterialFused Silica, N-BK7, H-K9L, Corning HPFS
Diameter RangeUp to 400mm
Diameter Tolerance+0.1/-0.1
Thickness/ToleranceUp to 50mm +/-0.1
PolishingDouble Sides High Precision, edge fine grind
FlatnessUp to L/20 ( L/4, L/6, L/10 still available)
Surface quality60-40
ChamferProtection Chamfer
Clear Aperture95%
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