9340644

Centration error: <3 arcmin
Clear aperture: >90
Coatings: uncoated
Dimensions tolerance, mm: (+0/-0.15)
Dimensions, mm: 20 x 20
Edge thickness, mm: 4
Focal length tolerance, %: ±3
Focal length, mm: -50
Material: BK7
Protective chamfers: <0.25 mm x 45°
S1 Flatness, PV IR S2 Flatness, PV: <λ/4 @ 632.8 nm
Surface quality, S-D: 60-40