DARKENING FILTER COMPRISING A NON-UNIFORM PATTERN OF SWITCHABLE SHUTTERS

The present disclosure relates to darkening filters ′ which are suitable for selectively darkening an optically transmissive window for protection from light, in particular from high intensity light. The darkening filter ′ is mounted in a forward-facing optically transmissive window and comprises a non-uniform pattern of switchable shutters capable of being switching to at least a dark state and a light state by a shutter control system . The present disclosure also relates to a method of operating such darkening filters ′. The present disclosure furthermore relates to vision-protective headgears ′, welding shields and panes comprising the darkening filters ′ according to the present disclosure.