Material:

BK7, Grade A fine annealed

Dimension Tolerance:

+/-0.10mm

Radius:

+/- 1%

Surface roughness RMS (nm)

< 1.00 nm

Optical face:

super finished

Coating:

Al + protection layer (MgF2) transparent to UV

Reflectivity:

R > 50% @ 120 - 200nm, R > 70% @ 200 - 850nm

Angle of incidence 45°