Standard Windows

Material BK7   
Diameter 5-50mm
Diameter Tolerance    +0/-0.1mm  
Thickness 2-4mm
Thickness Tolerance
±0.2mm
Flatness     λ/2 @ 632.8mm  
Surface Quality 40/20
Parallelism <1 arc min  
Bevel   <0.25mm x 45°  
Coatings   according to your specs    
Material UV Grade Fused Silica   
Diameter 5-50mm
Diameter Tolerance    +0/-0.1mm  
Thickness 2-4mm
Thickness Tolerance ±0.2mm
Flatness     λ/2 @ 632.8mm  
Surface Quality 20/10
Parallelism <1 arc min  
Bevel   <0.25mm x 45°  
Coatings   according to your specs 
Material Optical Grade Sapphire   
Diameter 3-25mm
Diameter Tolerance    ±0.1mm  
Thickness 0,5-1mm
Thickness Tolerance ±0.1mm
Flatness     λ~2λ @ 632.8mm per 25.4mm 
Surface Quality 80/50
Parallelism <3 arc min  
Coatings   according to your specs 

High Tolerance Windows

Material BK7   
Diameter 5-50mm
Diameter Tolerance    +0/-0.1mm  
Thickness 2-10mm
Thickness Tolerance
±0.2mm
Flatness     λ/10 @ 632.8mm  
Surface Quality 20/10
Parallelism <10 arc sec  
Bevel   <0.25mm x 45°  
Coatings   according to your specs    
Material UV Grade Fused Silica   
Diameter 5-50mm
Diameter Tolerance    +0/-0.1mm  
Thickness 2-10mm
Thickness Tolerance
±0.2mm
Flatness     λ/10 @ 632.8mm  
Surface Quality 20/10
Parallelism <10 arc sec  
Bevel   <0.25mm x 45°  
Coatings   according to your specs    
Material Optical Grade Sapphire 
Diameter 3-25mm
Diameter Tolerance    ±0.1mm  
Thickness 1-2mm
Thickness Tolerance
±0.1mm
Flatness     λ/4 @ 632.8mm per 25.4mm
Surface Quality 40/20
Parallelism <30 arc sec  
Coatings   according to your specs