Optical BK7 Windows
Windows are applied to isolate different physical environments while allowing light to pass.When selecting windows you should consider materials,transmisson,scattering, wavefront distortion,parallelism and resistance to certain environment.DND-OPTICS offers a wide range of different materials and different degree of precision windows.
Materials:BK7,UV Fused silica,CaF2,BaF2 typically,also Borofloat 33,Pyrex.Other glasses are available according to customers' requirement.
Material:BK7 grade A optical glass
Dimension Tolerance:+0.0, -0.1mm
Thickness Tolerance:± 0.1mm
Surface quality:60/40(Standard), 10/5(High Precision)
Clear Aperture: >85%
Flatness:(Standard), /10(High Precision) per 25mm@633nm
Parallelism:1' (Standard), 10" (High Precision)
Bevel:<0.25mm X 45°