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WELDING HELMET HAVING A FILTER ARRANGEMENT
专利权人:
3M INNOVATIVE PROPERTIES COMPANY
发明人:
Kristina M. Magnusson,Kenneth Jarefors
申请号:
US16885580
公开号:
US20200289324A1
申请日:
2020.05.28
申请国别(地区):
US
年份:
2020
代理人:
摘要:
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.
来源网站:
中国工程科技知识中心
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http://www.ckcest.cn/home/

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