9308050

Clear aperture: >90
Dimensions, mm: 20x20
Material: BK7
Protective chamfers: <0.25 mm x 45°
S1 Flatness, PV: <λ/8 @ 632.8 nm
S1 Surface quality, S-D: 20-10
S2 Flatness, PV: <λ/8 @ 632.8 nm
S2 Surface quality, S-D: 20-10
Thickness, mm: 3