Fused-silica plano-concave spherical lens
Lattice Electro Optics
Thickness Tolerance:±0.010"
Concentricity:< 3 arc min.
Clear Aperture:> 85% of diameter
Focal Length Tolerance:± 0.5%
Surface Figure:l/10 at 632.8nm
Surface Quality:10-5 scratch-dig
