100-2 Visible Light

Each detector is equipped with a Visible Light Filter. If it is found that the application requires the detector to be in conditions where there is some ambient light present, the detector equipped with an optical filter should be used.

The sensitivity of the detector is the same but the spectral range of the detector is limited to a narrower bandwidth. The filter used is a black glass filter which only passes light wave lengths above 780nm. In other words, all visible light is absorbed by the filter (hence the name black glass).