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Optical Window

An optical window is applied to isolate different physical environments while allowing light to pass. When selecting windows you should consider materials, transmission, scattering, wave front distortion, parallelism and resistance to certain environment.


Oplens offers a wide range of different materials and different shapes of optical windows. 

You are welcome to contact us for customized optical windows!


MaterialBK7 and Fused silica typically, Visible optical glass,Infrared optical glass, Colored glass.
TolerancesLow precisionStandard precisionHigh precision
Glass Qualitynd±0.001±0.0005±0.0001
Dimension Tolerance(mm)±0.20±0.10+0.01/-0.01
Thickness Tolerance(mm)±0.20±0.1±0.005
Wave front Distortion 632.8nmλ per 25mmλ /4per 25mmλ /20 per 25mm
Clear Aperture80%90%100%
Parallelism (arc min)3-5 minutes1 minutes<1 second
Bevel0.3±0.20mm×45° or upon requirement
CoatingCoating may be available by custom order