Description
BK7 Glass Window
The BK7 window effect is to transmit optical radiation between two different environments while preventing interference from interfering with other environmental substances. The window does not change the wavelength distribution of the light, the wavefront characteristics of the transmission, nor does it cause light scattering. We can produce BK7 parallel window with low deformation, low scattering, high parallelism and so on.
Optical Specification: as required
Material: BK7 A Grade
Diameter range: 10mm-101mm
Thickness: 1-5mm
Diameter tolerance: +0.0/-0.15mm
Diameter tolerance: +/-0.2mm
Clear aperture: >85%
Parallel: < 1 sec (Standard), < 10 sec (Precision)
Surface finish: 60-40 (Standard), 10-5 (Precision)
Flatness: λ/4 @632.8nm (Standard), λ/10 @632.8nm (Precision)
Wavefront distortion: λ/4 @632.8nm (Standard), λ/10 @632.8nm (Precision)
