World Wide Suppliers of Industrial Sapphire&Ruby Precision Parts

Sapphire to Metal for Fluidic,Metrology&Medical Components

ISO 9001:2019 Mfg&Managment Certified Companies

Round Sapphire Window

Round Sapphire Windows are excellent at protecting delicate lasers, sensors, 

cameras, and other devices due to their superior strength and scratch resistance. 
Sapphire windows can also be used as viewports in high pressure or vacuum 
situations. Sapphire pressure windows can be made much thinner than their optical 
glass counterparts due to sapphire’s high modulus of rupture.

SpecificationsGrade Precision Standard
Diameter Dia3mm to 300mm, customized available
Thickness 0.2mm to 50mm , customized available
Diameter Tolerance +/-0.05mm +/-0.1mm
Thickness Tolerance +/-0.025mm +/-0.05mm
Edge ground or polished ground or polished
Chamfer/Bevel 0.25*45° 0.25*45°
Flatness 1/8 lambda per inch @633nm 1/2 lambda per inch @633nm
Parallelism 30 arc sec 3 arc min
Surface Qulitity 20/10 60/40
Clear Aperture >85% >85%
Coating customized available
Material BK7, sapphire, fused silica, quartz, Germanium, Silicon, MgF2, CaF2, etc

For more information or other materials and requests, please contact us.