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Sapphire Step Windows

Sapphire pressure windows stand up well to the abusive salt water and debris while being less thick than other traditional glass counterparts.

Manufactured in the USA
Manufactured in the USA

Sapphire Step Windows Examples

What are Sapphire Step Windows?

Sapphire step windows are a specialty of Guild Optical Associates. Step windows, aka T-Windows, are excellent for use in viewports, pressure, and vacuum situations. Sapphire step windows also make great viewports for deep ocean vehicles.

Contact us for help determining the minimum thickness needed for your pressure of vacuum window.

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.

With a MOHS hardness of 9, sapphire is second only to diamond and it transmits from 190nm to 5000nm making it a great choice for UV applications and mid wave infrared. 
Guild Optical is a top tier supplier for many of the best companies in the United States. When precision sapphire optics are required, Guild delivers per the drawing, on time, and on budget. 

Round sapphire optical components are typically the most economical. Rectangular windows can also be made, but usually have to be cut out of round stock. Guild Optical Associates has the machines needed to create any custom shaped windows as well. 

Diameter: From 10 mm (.393”) to 305 mm (14”) in any optical axis
Thickness: Varies by Diameter but can be sub millimeter and up
Flatness: Varies by thickness but can be 1/10 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
Guild Optics recommends C-Plane material for sapphire pressure windows and vacuum windows

Start your sapphire step windows project today

For a quote on your custom requirements please send us your drawing or specification.