|
Material |
K9 |
|
Diameter |
17.5mm 25.4mm 38.1mm |
|
Dimension Tolerance |
±0.1mm |
|
Surface Quality |
60-40 |
|
Surface Flatness |
λ/ |
|
180°Deviation Toleranc |
<8 arc seconds |
|
Clear Aperture |
>90% |
|
Bevelling |
0.25mm*45 degree |
|
Coating |
Three Reflected Surfaces are coated with copper
|