Optical Bk7 Windows

We offer 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.
specifications:
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:λ(standard), λ/10(high precision) per 25mm@633nm
parallelism:1' (standard), 10" (high precision)
bevel: