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公开(公告)号：EP0474775A1
公开(公告)日：1992-03-18
申请号：EP90909791.0
申请日：1990-06-05
发明人： MASES, Kjell
IPC分类号： A61F9
CPC分类号： A61F9/065
摘要： Un casque de soudeur (1) comporte un filtre rapide (3) lequel est commandé par la lumière de soudage, et à travers lequel l'utilisateur dudit casque peut voir clairement en l'absence de lumière de soudage. Selon l'invention, ledit casque est complété par des fenêtres latérales (4) servant à filtrer les rayonnements infrarouges et ultraviolets, et présentant un effet de filtre modéré de la lumière visible.
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公开(公告)号：EP0474775B1
公开(公告)日：1994-08-03
申请号：EP90909791.7
申请日：1990-06-05
发明人： MASES, Kjell
CPC分类号： A61F9/065
摘要： A welder's helmet (1) provided with a fast filter (3) which is controlled by welding light and through which the wearer of the helmet can see clearly in the absence of welding light. In accordance with the invention, the helmet is complemented with side windows (4) operative to filter out IR and UV radiation and having a moderate filter effect for visible light.
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3.发明公开LIQUID CRYSTAL WELDING GLASS SHIELDS HAVING IMPROVED OPTICAL ANGULAR PROPERTIES 失效光学性能改善的角度液晶焊接WINDSHIELD
公开(公告)号：EP0706674A1
公开(公告)日：1996-04-17
申请号：EP95917546.0
申请日：1995-04-25
发明人： HÖRNELL, Ake , PALMER, Stephen
CPC分类号： G02F1/13471 , A61F9/062 , A61F9/067
摘要： A liquid crystal welding glass structure whose density increases when welding is commenced includes two liquid crystal cells which are mounted between polarization filters which have an extinguishing effect on one another. When mounting the filters, the filters are turned so that their respective angular dependencies on the optical density counteract one another. With the intention of improving this compensating effect, the brushing/rubbing of the mutually opposing limiting walls which determine the direction of the molecules is limited to at least one of the component cells (3) whose relative angular displacement differs from 90° and is smaller than or coincident with 85°. The angle is preferably between 20° and 85°.
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