Category Random Stuff       Thread starter PSXHAX       Start date Oct 20, 2015 at 12:45 AM       2,742       1            
This is pretty cool, saw it on YouTube today... Touch Lumen by Rost and the heat of your body will be converted to light!

Essentially it's an everlasting light source that is always with you. :)

From their Kickstarter Page, to quote: WHAT IS LUMEN?

It is an ordinary flashlight with brightness comparable to your smartphone's except his main feature - it doesn't need batteries and virtually eternal.

HOW DOES IT WORK?

af6505c97807358d3bb007c8164566e5_original.jpg Lumen has relatively simple work principle - you touch TEG (Thermoelectric Generator) - small ceramic bar that can produce electric current when we provide temperature difference between upper and lower parts of TEG.

6e55d8c468f5004dc91c8d97201822a5_original.pngIn my application difference between temperature of your body (about 98 °F) and environment (at least 82 °F) is enough to generate power for single led. Metal body of Lumen serve as a radiator.

LUMEN SPECIFICATIONS
  • Weight : ~ 35 gramms \ 1,2 oz for Aluminium version
  • Weight : ~ 45 gramms \ 1,5 oz for Titanium version
  • Dimensions: 40 mm x 10mm x 80 mm \ 1,6" x 0,4" x 3,2"
  • 5mm ultrabright CREE led
  • Light output: 3000 mCd
c5ff2a59ca45ebd53f72495cb2ce03b2_original.jpg

 
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