发明申请
US20120057350A1 SWITCHABLE LIGHT-DUCT EXTRACTION 有权
可切换的灯罩提取

SWITCHABLE LIGHT-DUCT EXTRACTION
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.
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