{
  "$type": "site.standard.document",
  "description": "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…",
  "path": "/patents/1324271",
  "publishedAt": "2022-08-11T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "A61F9/067",
    "3M INNOVATIVE PROPERTIES COMPANY"
  ],
  "textContent": "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.",
  "title": "DARKENING FILTER COMPRISING A NON-UNIFORM PATTERN OF SWITCHABLE SHUTTERS"
}