In stock
Protective chamfers: <0.25 mm x 45°
Wedge / Parallelism error: <3 arcmin
Thickness, mm: 20 (±0.2)
Surface quality S1, S-D: 60-40
Material: BK7
Flatness S1, PV: <λ/4 @ 632.8 nm
Dimensions, mm: Ø 140 (+0.0/-0.2)
Clear Aperture: >90
Surface quality S2, S-D: Ground polished
Wedge / Parallelism error: <3 arcmin
Thickness, mm: 20 (±0.2)
Surface quality S1, S-D: 60-40
Material: BK7
Flatness S1, PV: <λ/4 @ 632.8 nm
Dimensions, mm: Ø 140 (+0.0/-0.2)
Clear Aperture: >90
Surface quality S2, S-D: Ground polished
