Sapphire /Quartz /CaF2 /ZnSe Viewport

Quartz viewport- CF35(view range:38.5mm) , CF63(view range:73mm), CF100(view range:110mm), CF150(view range:110mm),KF25(view range:23.8mm), KF40(view range:38.5mm),KF50(view range:48.8mm)
Sapphire viewport-CF35(view range:23.8mm or 38.5mm), CF63(view range:48.8mm or 73mm),KF25(view range:23.8mm), KF40(view range:38.5mm), KF50(view range:48.8mm)
CaF2 viewport-CF35(view range:38.5mm), KF25(view range:23.8mm), KF40(view range:38.5mm),
ZnSe viewpor-CF63(view range:45mm)