Precision Window
With perfect surface polishing, the precision window is ideal to use as interferometer flat, laser window, optical flat, beamsplitter substrate, or parallel plate.

Round shape precision window

Square shape precision window

: BK7 and Fused silica typically.
Other Glass, Sapphire, Quartz are also available.

Dimension Tolerance: +0.0, -0.1mm
Thickness Tolerance: +/-0.2mm
Clear Aperture: >80%
Parallelism: up to 10"
Surface Quality: 20-10 scratch and dig
Wavefront Distortion: l/10 per 25mm
Protective Bevel

AR coating is available by request.
R<0.2%@single wavelength
Ravg<0.5%@broadband wavelength range

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