Commercial quality window commonly used as sight glass,
instrument window, protective window, beamsplitter substrate,
mirror substrate, vacuum window, etc.
Round shape window
Square shape window
Material: BK7 and Fused silica typically.
Other Glass, Sapphire or Quartz are also available. Specifications:
Diameter Tolerance: +0.0, -0.1mm
Thickness Tolerance: +/-0.2mm
Clear Aperture: >85%
Surface Quality: 60-40 scratch and dig
Flatness: l/4 @632.8nm
AR coating is available by request.
Ravg<0.5%@broadband wavelength range