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Emergency Battery-free LED light, waterproof to 300m
- 14 August 2009
At OFMEX 2009, Daisaku Shoji presented the NightStar, a flashlight that doesn’t need batteries.
The NightStar is an LED light that can work without batteries, using Faraday’s Law. If shaken for 40 seconds, it can shine for 20 minutes. A magnet moves back and forth to generate a current, which is efficiently converted to light by the LED. The light is also focused and reflected efficiently, using a concave mirror and convex lens.
The NightStar is also very durable. It doesn’t break even if dropped from a height of 120 cm.
The NightStar is available from Daisaku Shoji’s online shop, for 5,600 yen excluding tax.
Related Links :
- http://www.daisaku-shoji.co.jp/en/e_nightstar2.html
- http://www.ofmex.jp/ofmex/english/ (International Office Machines & Equipment Expo Tokyo)
Related Links :
- http://www.daisaku-shoji.co.jp/en/e_nightstar2.html
- http://www.ofmex.jp/ofmex/english/ (International Office Machines & Equipment Expo Tokyo)
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