发明申请
- 专利标题: SWITCHABLE LIGHT-DUCT EXTRACTION
- 专利标题(中): 可切换的灯罩提取
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申请号: US13215325申请日: 2011-08-23
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公开(公告)号: US20120057350A1公开(公告)日: 2012-03-08
- 发明人: David G. Freier , Rolf W. Biernath , Thomas R. Hoffend, JR.
- 申请人: David G. Freier , Rolf W. Biernath , Thomas R. Hoffend, JR.
- 专利权人: 3M Innovative Properties Company
- 当前专利权人: 3M Innovative Properties Company
- 主分类号: F21V14/08
- IPC分类号: F21V14/08 ; F21V17/02
摘要:
The disclosure generally relates to switchable light extractors and in particular to switchable light extractors useful for extracting light from light ducts used for interior lighting of a building. The disclosure also relates to lighting systems that include the light extractors, and methods of extracting light from a lighting system. The switchable light extractors generally include a first and a second reflective film, each having a plurality of voids that can aligned to extract light from a light duct.
公开/授权文献
- US09222650B2 Switchable light-duct extraction 公开/授权日:2015-12-29
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