Our optical designers are always available to assist with your special needs SpecificationsMaterialSapphire, Silicon, GemaniumRadiusR≥3.0Surface FinishN<3,N≥λ/4Centration≥1’Diameter≥3.0 ±0.01mmT/D1/10Surface Quality20/10Bevel0.25mm at 45 degCoatingSingle or Multi-layer films SpecificationsMaterialFused Silica, Quartz & optical GlassRadiusR≥1.5Surface FinishN<2,N≥λ/8Centration≥1’Diameter≥3.0 ±0. ...