Knight Optical (UK) Ltd Datasheets for Optical Windows

Optical windows are used to isolate different physical environments while allowing light to pass relatively unimpeded.
Optical Windows: Learn more

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Product Name Notes
A dome is an optical window composed of two parallel curved surfaces. Domes are commonly used in defence applications and often in extreme environments such as submersible ROVs. For this...
B270 or equivalent windows are cost-effective medium performance windows. B270 or equivalent glass works efficiently from 320nm though to 2600nm with an average transmission of 90% from 400nm to 2000nm...
Barium Fluoride (BaF₂) is a crystalline compound of barium and fluoride used in optical applications in the NIR, VIS and MWIR spectrums. Barium Fluoride is resistant to high energy radiation,...
Calcium Fluoride (CaF₂) is commonly used for optics looking at the IR and UV spectrums and has a very low change in refractive index with wavelength. It shares similar optical...
Germanium (Ge) is a relatively hard, high-density, IR transmitting material that blocks UV and VIS wavelengths but allows IR from 2µm. Germanium has the highest refractive index of commonly available...
These BBAR coated B270 telecom windows are coated for use in the 1050-1700nm region. Our coating achieves less than 0.5% reflection in the telecoms band and 0.09% reflection at 1550nm.
We offer two grades of stock borosilicate or equivalent windows. Our standard windows are cut from float sheet material and our polished grade is then further polished to better flatness...
White float windows are cost effective medium performance windows and acceptable in a host of scientific instrument applications. They are cut from large sheets that are relatively flat and parallel...

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