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Optical windows are used to allow optical radiation to pass from one environment to another without allowing Left Alignother elements of these environments to mix.

And it does not change the wavelength distribution of the beam, the transmitted wavefront, nor does it scatter any of the light out of the beam.


Key Features
Material: BK7 / CaF2 / Fused Silica / MgF2 / Sapphire / ZnSe
Irregularity (fringe): l /4
Diameter Tolerance: +0.0, -0.05mm
Thickness Tolerance: +/- 0.1mm
Clear Aperture: >85%
Parallelism: 5 arc min
Surface Quality: 40-20
Wavefront Distortion: l/4 per 25mm