Non-button laser pointer
作者： Kuo-Ti Chen
DOI:
关键词:
摘要: A laser pointer having a generating loop formed of metal barrel, clip, rear end cap, series battery cells, unit and signal line, controlled by an electronic switch to emit beam, the being switched on when user holds cap in hand touching clip with one finger, off finger is removed from clip.
lens.org 参考文章(6)
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