Material: Optical Glass, Quartz, BK7, CaF2。
Diameter Tolerance: -0. 00/-0.15mm
Focus Length Tolerance: +/-2%mm
Centration: 3 arc minutes
Surface Quality: 10-5
Radius Tolerance: < ±0.5%
Surface Figure: λ/8@633nm
Clear Aperture: Central 85% of Diameter
Coating: Specified by customer