9428102

Clear aperture: >90
Coatings: uncoated
Dimensions tolerance, mm: +0/-0.2
Dimensions, mm: 20 x 20
Edge thickness, mm: 5
Material: BK7
Protective chamfers: <0.25 mm x 45°
ROC S1, mm: -500
Surface quality, S-D: 40-20
Thickness tolerance, mm: ±0.2