Commercial Quality Windows, Circular, N-BK7 Optical Glass


Diameter Tolerance

+/- 0.125 mm

Thickness Tolerance

+/- 0.125 mm

Surface Accuracy

~5 wave per inch

Surface Quality

60-40, scratch-dig or better




Fine ground and beveled

Commercial Quality Windows, Circular, N-BK7 Optical Glass

Esco PN:
  • $ 550

Commercial windows are used for sight glasses, instrument windows, beamsplitter substrates, vacuum windows, welding window substrates. Esco carries a complete inventory of circular commercial optical windows of N-BK-7 Optical Glass.

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