Curved Automatic-Darkening Filter
Inactive Publication Date: 2014-06-19
3M INNOVATIVE PROPERTIES CO
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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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Property | Measurement | Unit |
Weight | ||
Flexibility | ||
Transparency | ||
tensile | MPa | |
Particle size | Pa | |
strength | 10 |
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