KENNETH JAREFORS,KRISTINA M. MAGNUSSON,PER-OLAV DAHLIN
申请号：
BRPI0608835
公开号：
BRPI0608835A2
申请日:
2006.03.02
申请国别(地区):
BR
年份:
2016
代理人:
摘要：
A protective automatic darkening filter construction 10 includes two low twist liquid crystal cells 26, 30 interspersed between a series of offset polarizers 24, 28, 32. The resulting construction provides improved homogeneity in the dark state as viewed by the user over a large viewing angle. By reducing variations in shade, visibility through the filter may be improved.
