BK7 Windows

Ultrathin window, 20x20mm, 0.5mm Thick, uncoated, BK7 Precision Windows

PRODUCT DESCRIPTION

Part NumberCWP-2020
Diameter (mm):
Diameter Tolerance (mm):+0.00/-0.10
Length / width (mm):20 x 20 L/D Tolerance (mm):+0.00/-0.20
Center Thickness CT (mm):0.5Center Thickness Tolerance (mm):±0.1
Substrate:N-BK7 or EquivalentSurface Quality:60-40
Flatness @ 632.8nm:
Parallelism< 3 arc minute
Clear Aperture CA (mm):>= 85% Bevel: Protective bevel as needed
Coating:UncoatedType:Ultrathin window