Device with automatically changeable light propagation direction

The invention disclose a device with automatically changeable light propagation direction, comprising a box body frame. A bottom cover is arranged at the bottom of the box body frame; a plurality of through channels that are through the bottom cover are arranged in the bottom cover; a plurality of m...

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Bibliographische Detailangaben
1. Verfasser: YAN ZHONGXING
Format: Patent
Sprache:chi ; eng
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