Substrate: B270®
Dimensional Tolerance: ±0.1mm
Thickness Tolerance: ±0.1mm
Surface Flatness:3(1)@632.8nm
Surface Quality: 60/40 or better
Edges: Ground and Blacken, 0.3mm max. Full width bevel
Back Surface:Ground and Blacken
Clear Aperture: 90%
Parallelism:<5″
Coating: Protective Aluminum Coating, R>90%@430-670nm,AOI=45°