9805070

S1: HR (R>99%) @ 532 nm + HT (T>90%) @ 635 nm + PR (R=50±2%) @ 715-745 nm, AOI 0°, IBS
Material: FS (Corning 7980 0F)
Thickness, mm: 3 mm (+/-0.2 mm)
Surface quality, S1/S2: 20-10 S-D
Surface flatness (PV), S1/S2: < L/10 @ 633 nm per 10 mm diameter in clear aperture
S2: AR (R<0,5%) @ 635 + 715-745 nm, AOI 0°, IBS
Parallelism error: < 1 arcmin
Chips: < 0.3 mm
Diameter, mm: 18 mm (+0/-0.1 mm)
Coatings:
Clear aperture: >/= 90 %, central area
Protective chamfers: 0.1-0.3 mm x 45 deg