We can provide lenses, prisms, windows and other products of various crystal materials.
Requestspecification ：
Material:Silicon,Germanium,Znse,Zns,Sapphire,Caf2,Mgf2,Baf2...
Diameter Tolerance:+0/-0.01~+0/-0.1mm
Thickness Tolerance:±0.01~±0.1mm
Focal Length Tolerance (%):±1%
Irregularity (P-V) @ 632.8nm:λ/10~λ/2@632.8nm
Surface Quality:10/5~60/40
Centration:<30”~3'
Angular Accuracy:<3”~3'
parallelism:<3”~3'
Clear Aperture:>90%
Bevel:Protective bevel
Coating:Uncoated,AR,BBAR，DLC
