| Specification: | Material: Flint glass, UV fused silica, Infrared fused silica, CaF2, Ge, ZnSe, Si, etc.
Dimension: 4mm-- 60mm
Angle tolerance: 30" --3'
Surface accuracy: ¦ Ë / 10--1¦ Ë
Surface quality: 60/ 40
Clear Aperture: 90%
Coating: custom design |