Commercial Quality Windows, Circular, A1 Fused Quartz, Optical Grade


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*

*parts under 25.4mm in diameter may not have beveled edges

Commercial Quality Windows, Circular, A1 Fused Quartz, Optical Grade

Esco PN:
  • $ 770

Commercial windows are used for sight glasses, instrument windows, beamsplitter substrates, vacuum windows, and, welding window substrates. Esco carries a complete inventory of circular commercial optical windows of Optical Grade Fused QuartzWindows are polished both sides with ground edges.

Don't see a part that matches exactly what you need, perhaps you'd like to modify a dimension or add a coating?  Use our fast online quote tool to find out what a modification would cost. 


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Esco Optics is a leading manufacturer of custom and catalog optics, precision optical components, and ITAR optics in the United States.

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ITAR registered and compliant, Esco manufactures ITAR optics for all of its customers with the strictest confidentiality.