CUSTOMIZED
Material: Corning 7980 0F
Diameter: 38.1 mm (+0/-0.1 mm)
Thickness: 12.7 mm(+/-0.15 mm)
Clear aperture: >85%
Surface quality S1: 20-10 S-D over CA MIL-PRF-13830B
Surface quality S2: commercial polish
Surface flatness S1: λ/8 @ 633 nm over 10 mm diameter
Surface irregularity S1: λ/10 @ 633 nm over CA
Parallelism error: <5 arcmin
Chamfers: 0.2 – 0.4 mm x 45° (Chips: <0.25 mm)
Coatings (IBS):
S1 (arrow marks): HRs>99.8% @ 740 – 860 nm + HRp>98.0% @ 750 – 850 nm, AOI=45° (|GDDrs| < 30 fss @ 740-860 + |GDDrp| < 100 fss @760-840 nm)
S2: Uncoated
