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公开(公告)号：US20190258111A1
公开(公告)日：2019-08-22
申请号：US16346267
申请日：2017-07-11
Applicant: 3M INNOVATIVE PROPERTIES COMPANY
Inventor： Kristina M. Magnusson , Kenneth O.R. Jarefors , Larissa Zuravskaja , Sébastien L.M. Jacquier
IPC: G02F1/1335 , A61F9/06
Abstract: An automatic darkening filter for welding protection. The automatic darkening filter has a first liquid crystal cell having two flat ultrathin glass substrates. Further, a welding protector is provided that includes the automatic darkening filter. The automatic darkening filter is lightweight and nevertheless mechanically stable and durable.
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