#F2F3F2 LP347 Near-IR A/R Coated Glass Protective Window

LP347 Near-IR Windows are anti-reflection-coated windows that are specifically optimized for near-infrared transmission, while still allowing visible light to pass. These windows are made of optically ground, polished and coated B270 crown glass, and are commonly used as protective cover glasses for cameras used in surveillance, LPR/ANPR and security applications that function primarily in the dark with help from infrared light sources.

Useful Range : 690-1090nm
Cut-on Wavelength 50% T : 360nm
Tolerance : +/- 15nm
Peak Transmission : ≥99%
Surface Quality : 40/20

LP347 Transmission Data (Typical)

wavelength (nm)	transmission (%)

wavelength (nm)	transmission (%)

Filter Mount & Size Options

Threaded Mount

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Unmounted & Custom Size

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The performance of a filter is based on what happens to light passing through the filter. The apparent color of light reflected off the surface is not a reliable way to judge the filter's capabilities. Batch-to-batch difference in the apparent color of the coatings or filter substrates can often be easily seen when looking at two examples of the same filter type. The color of the coating does not indicate a disparity in performance. Filters 62mm and greater have a surface quality tolerance of 60/40.

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