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American Owned & Operated
Esco Optics is a leading manufacturer of custom and catalog optics, precision optical components, and ITAR optics in the United States.
Commercial Quality Windows, Circular, N-BK7 Optical Glass
Esco PN:|
Diameter Tolerance |
+/- 0.125 mm |
|
Thickness Tolerance |
+/- 0.125 mm |
|
Surface Accuracy |
≤ 2λ per inch |
|
Surface Quality |
60-40 Scratch-Dig or better |
|
Parallelism |
<15' |
|
Edges |
Fine ground and safety beveled* |
|
Clear Aperture |
90% |
*parts under 25.4mm in diameter may not have beveled edges
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. Windows 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 custom part would cost.
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Military & Defense Supplier
As the leader for military and defense optics in the United States, Esco Optics adheres to the International Traffic in Arms Regulations.
ITAR Registered & Compliant
ITAR registered and compliant, Esco manufactures ITAR optics for all of its customers with the strictest confidentiality.