Tapered Optical Windows

Manufactured in the USAManufactured in the USA


Guild Optical Associates manufactures tapered sapphire windows. These windows can also be made from a multitude of different materials. Tapered optical windows, or plugs, are excellent for high pressure applications. Guild Optical Associates can provide the precise dimensions you require to match your intended housing with near perfect accuracy.

Optical windows used in high pressure situations have plenty to gain by losing a lot of thickness. Sapphire optical windows can be up to 65% thinner than Fused Silica windows, while also being much more scratch resistant. Guild Optics will help you determine the thickness needed to start utilizing sapphire in your project.


Diameter: From 10 mm (.393”) to 305 mm (12”) in any optical axis
Thickness: Varies by Diameter but can be sub millimeter and up
Flatness: Varies by thickness but can be 1/20 wave or better if needed
Parallelism: Varies by size but can be as tight as 1 arc second
Surface Quality: Down to 10/5 Scratch/Dig
Quantities: From singles to full large scale production runs
Materials: Sapphire, Quartz, Fused Silica, Bk7, and many other Optical Glass types

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Durable, scratch resistant, stronger than glass

learn the benefits of sapphire optics