In stock
Centration error: <3 arcmin
Diameter, mm: 20 mm (+/-0.1 mm)
Edge thickness, mm: 2.0 mm (+/-0.1 mm)
Focal length, mm: F=+50 mm (+/-1%)
Material: BK7
Protective chamfers: <0.3 mm x 45°
ROC S1, mm: +22.85 mm (+/-0.5 %)
S1 Convex: 40-20
S2 Plano: Grinded
Surface quality, S-D:
Diameter, mm: 20 mm (+/-0.1 mm)
Edge thickness, mm: 2.0 mm (+/-0.1 mm)
Focal length, mm: F=+50 mm (+/-1%)
Material: BK7
Protective chamfers: <0.3 mm x 45°
ROC S1, mm: +22.85 mm (+/-0.5 %)
S1 Convex: 40-20
S2 Plano: Grinded
Surface quality, S-D:
