Requirements Product Specification/mm CeF3 Φ5×5 mm Process Indicators CeF3 Size: Dia 5mm;5mm long Polish:the two flat faces polished Orientation Tolerence: < 0.5° Thickness/Diameter Tolerance: ±0.1 mm Surface Flatness: <λ/[email protected] Wavefront Distortion（WFD): <λ/[email protected] Surface Quality: 20/10 Parallel: 30〞 Perpendicular: 15ˊ Clear Aperture: >90% Chammfer: <0.2×45° Pictures