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公开(公告)号：US20200289324A1
公开(公告)日：2020-09-17
申请号：US16885580
申请日：2020-05-28
Applicant: 3M INNOVATIVE PROPERTIES COMPANY
Inventor： Kristina M. Magnusson , Kenneth Jarefors
IPC: A61F9/06
Abstract: A welding helmet having a filter arrangement is disclosed. The welding helmet is provided with a main filter and at least one auxiliary filter separate from and positioned next to the main filter. The at least one auxiliary filter comprises an electro-optic element adapted to attenuate the transmission of optical radiation incident on the auxiliary filter.
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公开(公告)号：US20200278574A1
公开(公告)日：2020-09-03
申请号：US16646943
申请日：2018-08-27
Applicant: 3M INNOVATIVE PROPERTIES COMPANY
Inventor： Kristina M. Magnusson , Louise L. M. Madsen , Larissa Zuravskaja , Kenneth Jarefors
IPC: G02F1/1333 , G02F1/1339 , G02F1/1343 , G02F1/1337 , G02F1/1335 , G02F1/137 , G02C7/10 , G02F1/1341 , A61F9/06
Abstract: Curved, arcuately-bonded liquid-crystal cells that include substrates held together by an edge adhesive cured after the substrates were bent into a congruently curved configuration; methods of making such cells; and, switchable shutters and automatic darkening filters that include such cells.
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公开(公告)号：US20190142640A1
公开(公告)日：2019-05-16
申请号：US16098155
申请日：2017-05-01
Applicant: 3M INNOVATIVE PROPERTIES COMPANY
Inventor： Kristina M. Magnusson , Kenneth Jarefors , Laurent Froissard , Britton G. Billingsley
IPC: A61F9/06
Abstract: A curved eye protection shield for welding protection. The eye protection shield has an electrically switchable darkening filter and a protective cover. The darkening filter has eye facing major inner and outer surfaces, and the protective cover has major inner and outer surfaces. The protective cover is provided for arrangement on the inner surface of the darkening filter. The inner and outer surface of the darkening filter are equidistant, whereas the inner and outer surface of the protective cover are non-equidistant. The invention is advantageous in that it provides an eye protection shield having a minimized refractive power.
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公开(公告)号：US09254226B2
公开(公告)日：2016-02-09
申请号：US14372087
申请日：2013-01-15
Applicant: 3M INNOVATIVE PROPERTIES COMPANY
Inventor： Kristina M. Magnusson , Kenneth Jarefors
IPC: G02F1/00 , A61F9/06 , G02F1/1335 , G02F1/1347 , G02F1/1333 , G02F1/23 , G02F1/139 , G02F1/133
CPC classification number: A61F9/067 , A61F9/065 , G02F1/13318 , G02F1/13338 , G02F1/133512 , G02F1/133528 , G02F1/1347 , G02F1/23 , G02F2001/133531 , G02F2001/1398 , G02F2203/055
Abstract: The present invention relates to an automatic welding filter that changes from a light transmission state to a dark transmission state in response to incident welding light and includes a color-tunable filter whose spectral transmittance can be varied to optimize the visual appearance of a welding task. The color-tunable filter comprises at least one low twist liquid crystal cell disposed between polarization filters having substantially parallel polarization directions. The user is able to adjust the color of the automatic welding filter in the dark transmission state, independently of the shade, in response to a user selected color signal which alters the birefringence properties of the low twist liquid crystal cell.
Abstract translation: 本发明涉及一种自动焊接过滤器，其根据入射的焊接光从透光状态变为暗透射状态，并且包括可以改变光谱透射率以优化焊接任务的视觉外观的颜色可调谐滤光器。 颜色可调谐滤光器包括设置在具有基本上平行的偏振方向的偏振滤光器之间的至少一个低扭曲液晶单元。 响应于改变低扭曲液晶单元的双折射性质的用户选择的颜色信号，用户能够独立于阴影而在暗透射状态下调节自动焊接过滤器的颜色。
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15.发明授权公开(公告)号：US11413190B2
公开(公告)日：2022-08-16
申请号：US16938372
申请日：2020-07-24
Applicant: 3M INNOVATIVE PROPERTIES COMPANY
Inventor： Kristina M. Magnusson , Kenneth Jarefors , Britton G. Billingsley
Abstract: Protective headgear with a curved switchable shutter and curved front and rear cover plates and including at least two antireflective layers.
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Patent Agency Ranking
公开(公告)号：US11324633B2
公开(公告)日：2022-05-10
申请号：US16885580
申请日：2020-05-28
Applicant: 3M INNOVATIVE PROPERTIES COMPANY
Inventor： Kristina M. Magnusson , Kenneth Jarefors
IPC: A61F9/06
Abstract: A welding helmet having a filter arrangement is disclosed. The welding helmet is provided with a main filter and at least one auxiliary filter separate from and positioned next to the main filter. The at least one auxiliary filter comprises an electro-optic element adapted to attenuate the transmission of optical radiation incident on the auxiliary filter.
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17.发明授权公开(公告)号：US10758420B2
公开(公告)日：2020-09-01
申请号：US16096939
申请日：2017-05-08
Applicant: 3M INNOVATIVE PROPERTIES COMPANY
Inventor： Kristina M. Magnusson , Kenneth Jarefors , Britton G. Billingsley
Abstract: Protective headgear with a curved switchable shutter and curved front and rear cover plates and including at least two antireflective layers.
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公开(公告)号：US10426667B2
公开(公告)日：2019-10-01
申请号：US15543352
申请日：2016-02-01
Applicant: 3M INNOVATIVE PROPERTIES COMPANY
Inventor： Kristina M. Magnusson , Kenneth Jarefors
Abstract: Automatic darkening filters are often provided on a protective headgear, where protection from high intensity light is desired. An automatic darkening filter includes a switchable shutter, a shutter control system, a light sensor, and an imaging acquisition device. The switchable shutter is capable of assuming at least a dark state, a light state and an intermediate state.
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公开(公告)号：US10114242B2
公开(公告)日：2018-10-30
申请号：US15162242
申请日：2016-05-23
Applicant: 3M INNOVATIVE PROPERTIES COMPANY
Inventor： Kristina M. Magnusson , Britton G. Billingsley , Kenneth Jarefors , Larissa Zuravskaja , Joy L. Manske
IPC: G02F1/1333 , G02F1/1341 , G02F1/1335 , A41D13/11 , G02F1/139 , A61F9/02 , A61F9/06 , G02F1/133 , G02F1/1347 , G02C7/10 , G02F1/1343 , B29C65/00 , B29C65/48 , B32B38/18 , B29C65/14 , B32B37/15
Abstract: An automatic-darkening filter 10, 10′ that comprises a first polarizer 14, a second polarizer 18, a first liquid-crystal cell 16, and a sensor 64. The first polarizer 14 has a first polarization direction, and the second polarizer 18 has a second polarization direction. The liquid crystal cell 16 is disposed between the first and second polarizers 14, 18 and contains first and second optically-transparent, flexible, glass layers 40 and 42 with the liquid crystal layer 48 being located between these layers. The sensor 64 detects incident light and causes a signal to be sent, which causes molecular rotation within the liquid crystal layer. The inventive automatic-darkening filter is beneficial in that overall product weight can be reduced and the view field can be increased.
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公开(公告)号：US20160262467A1
公开(公告)日：2016-09-15
申请号：US15162242
申请日：2016-05-23
Applicant: 3M INNOVATIVE PROPERTIES COMPANY
Inventor： Kristina M. Magnusson , Britton G. Billingsley , Kenneth Jarefors , Larissa Zuravskaja , Joy L. Manske
IPC: A41D13/11 , G02F1/1333 , G02C7/10 , G02F1/1343 , G02F1/133 , G02F1/139 , A61F9/02 , G02F1/1335
CPC classification number: A41D13/1184 , A61F9/023 , A61F9/067 , B23K9/322 , B29C65/1406 , B29C65/4845 , B29C66/301 , B29C66/81264 , B29C66/81421 , B29C66/81471 , B29C66/836 , B32B37/153 , B32B38/1866 , B32B2551/00 , G02C7/101 , G02F1/13318 , G02F1/1333 , G02F1/133305 , G02F1/133528 , G02F1/1341 , G02F1/13439 , G02F1/13471 , G02F1/1396 , G02F2001/1398 , G02F2201/56
Abstract: An automatic-darkening filter 10, 10′ that comprises a first polarizer 14, a second polarizer 18, a first liquid-crystal cell 16, and a sensor 64. The first polarizer 14 has a first polarization direction, and the second polarizer 18 has a second polarization direction. The liquid crystal cell 16 is disposed between the first and second polarizers 14, 18 and contains first and second optically-transparent, flexible, glass layers 40 and 42 with the liquid crystal layer 48 being located between these layers. The sensor 64 detects incident light and causes a signal to be sent, which causes molecular rotation within the liquid crystal layer. The inventive automatic-darkening filter is beneficial in that overall product weight can be reduced and the view field can be increased.
Abstract translation: 包括第一偏振器14，第二偏振器18，第一液晶单元16和传感器64的自动变暗滤光器10,10'。第一偏振器14具有第一偏振方向，第二偏振器18具有 第二偏振方向。 液晶单元16设置在第一和第二偏振器14,18之间，并且包含第一和第二光学透明的柔性玻璃层40和42，液晶层48位于这些层之间。 传感器64检测入射光，并且发送信号，这导致液晶层内的分子旋转。 本发明的自动变暗过滤器是有益的，因为可以减少总体产品重量并且可以增加视野。
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