公开(公告)号：US20210145644A1

公开(公告)日：2021-05-20

申请号：US16622607

申请日：2018-06-13

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： Britton G. Billingsley ,  Kenneth Jarefors ,  Kristina M. Magnusson

IPC: A61F9/06 ,  G02F1/133 ,  G02F1/139 ,  G02F1/1335 ,  G02F1/1333 ,  G06F3/01

Abstract: Protective headgear including an automatic darkening filter with an array of switchable shutters, and including a shutter control system, at least one workview image acquisition device, and at least one eye position monitoring device, wherein the shutter control system is controllably connected to each switchable shutter of the array of switchable shutters so as to control the switching of each of the switchable shutters, and is receivably connected to the at least one workview image acquisition device and to the at least one eye position monitoring device.

公开(公告)号：US10821026B2

公开(公告)日：2020-11-03

申请号：US16096338

申请日：2017-04-24

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： Kristina M. Magnusson ,  Britton G. Billinglsey ,  Christopher M. Brown ,  Timothy L. Wong ,  Kenneth Jarefors ,  John M. Kruse ,  Jon A. Kirschhoffer ,  John M. Pilgrim

IPC: A61F9/06 ,  B23K9/32 ,  F16P1/06 ,  G02C7/10 ,  G02F1/1335 ,  G02F1/1337 ,  A61F9/02

Abstract: A welding protector (1) has a curved eye protection shield (10) with an electrically switchable light filter. The welding protector further has a magnifying cover (20) for arrangement on an eye facing inner side of the eye protection shield. The magnifying cover is pre-shaped based on a curve that extends equidistant to the curve the eye protection shield is based on. Further, the magnifying cover has two optical lenses (27) which in combination only partially cover the eye protection shield.

公开(公告)号：US20190125586A1

公开(公告)日：2019-05-02

申请号：US16096338

申请日：2017-04-24

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： Kristina M. Magnusson ,  Britton G. Billinglsey ,  Christopher M. Brown ,  Timothy L. Wong ,  Kenneth Jarefors ,  John M. Kruse ,  Jon A. Kirschhoffer ,  John M. Pilgrim

IPC: A61F9/06 ,  G02C7/10 ,  G02F1/1337 ,  G02F1/1335 ,  B23K9/32 ,  F16P1/06

Abstract: A welding protector (1) has a curved eye protection shield (10) with an electrically switchable light filter. The welding protector further has a magnifying cover (20) for arrangement on an eye facing inner side of the eye protection shield. The magnifying cover is pre-shaped based on a curve that extends equidistant to the curve the eye protection shield is based on. Further, the magnifying cover has two optical lenses (27) which in combination only partially cover the eye protection shield.

公开(公告)号：US11160687B2

公开(公告)日：2021-11-02

申请号：US16622607

申请日：2018-06-13

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： Britton G. Billingsley ,  Kenneth Jarefors ,  Kristina M. Magnusson

IPC: A61F9/06 ,  G02F1/1335 ,  G02F1/133 ,  G02F1/1333 ,  G02F1/139 ,  G06F3/01 ,  G02F1/1339

Abstract: Protective headgear including an automatic darkening filter with an array of switchable shutters, and including a shutter control system, at least one workview image acquisition device, and at least one eye position monitoring device, wherein the shutter control system is controllably connected to each switchable shutter of the array of switchable shutters so as to control the switching of each of the switchable shutters, and is receivably connected to the at least one workview image acquisition device and to the at least one eye position monitoring device.

公开(公告)号：US20190107749A1

公开(公告)日：2019-04-11

申请号：US16168871

申请日：2018-10-24

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： Kristina M. Magnusson ,  Britton G. Billinglsey ,  Kenneth Jarefors ,  Larissa Zuravskaja ,  Joy L. Manske

IPC: G02F1/1333 ,  A41D13/11 ,  G02F1/1335 ,  B23K9/32 ,  G02F1/1341 ,  G02F1/139

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.

公开(公告)号：US20220031514A1

公开(公告)日：2022-02-03

申请号：US17448569

申请日：2021-09-23

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.

公开(公告)号：US20190091069A1

公开(公告)日：2019-03-28

申请号：US16096939

申请日：2017-05-08

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： Kristina M. Magnusson ,  Kenneth Jarefors ,  Britton G. Billingsley

IPC: A61F9/06 ,  A61F9/04

Abstract: Protective headgear with a curved switchable shutter and curved front and rear cover plates and including at least two antireflective layers.

公开(公告)号：US20140168546A1

公开(公告)日：2014-06-19

申请号：US13713331

申请日：2012-12-13

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： Kristina M. Magnusson ,  Britton G. Billingsley ,  Kenneth Jarefors ,  Larissa Zuravskaja ,  Joy L. Manske

IPC: G02F1/13 ,  A41D13/11 ,  G02F1/139

CPC classification number: G02F1/133305 ,  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 ,  G02F1/133528 ,  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。

公开(公告)号：US11129748B2

公开(公告)日：2021-09-28

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.

公开(公告)号：US20210055597A1

公开(公告)日：2021-02-25

申请号：US17093377

申请日：2020-11-09

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： Kristina M. Magnusson ,  Louise L. M. Madsen ,  Larissa Zuravskaja ,  Kenneth Jarefors

IPC: G02F1/1333 ,  A61F9/06 ,  G02C7/10 ,  G02F1/1335 ,  G02F1/1337 ,  G02F1/1339 ,  G02F1/1341 ,  G02F1/1343 ,  G02F1/137

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.