Patent ID: 8564503

Claim:
Protective re-usable and flexible material built screen of the type including a visor 2 containing a cell of a known liquid crystal or electro-chromic technologies, with variable transparency as a function of the electrical values measurable at its power supply clips 3 , like but not exclusively ferro-electric, supper twisted nematics, dichroic dye gust-host where: the liquid crystal visor 2 is characterized by the fact of being independent, autonomous and built with flexible materials that can be manually bended along several different axis in standard environmental conditions without significant loss of optical quality to match the surfaces of installation of a variety of existing see-trough screens, like but not exclusively “insert”, “coating film” for existing face-shields, car glasses or goggles lenses, with the scope of enhance the hosting device comfort in the protection from the incident light; the visor 2 , in his preferred embodies, is characterized by the fact to be automatically controlled being activated in case of light, deactivated in case of darkness and fully supplied at the same time by one or more photovoltaic cell 5 connected in a serial or parallel circuit; The visor 2 is power supplied by this photo-electric source with the possible interposition of a control circuit made of appropriate known electronic components 4 introduced with the sole purpose to better manage the electrical values of the power supplied.