The Light Emitting Diode (LED)

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Greg Carlson describes the history, science and uses of LED lighting.

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The Light Emitting Diode (LED)

  1. 1. The Light Emitting Diode (LED) Greg CarlsonPhoto by: Mathieu Young Nerd Nite Siem Reap
  2. 2. To be covered in the next 18 slides:•  History•  The Science of LEDs•  Why LEDs are so freakin’ awesome•  Cost•  40 sec Case Study•  Common LED uses
  3. 3. Oleg’s Discovery•  1920’s Russian radio technician and inventor by the name of Oleg Vladimirovich Losev•  Noticed that diodes used in radio receivers emitted light when current was passed through them Oleg Losev
  4. 4. The Scienceelec troluminescence
  5. 5. Why LEDs are so freakin’ awesomeIncandescent Compact Florescent LED 60W1,200 hrs 8,000 hrs 50,000 hrs•  60 watts •  14 watts •  7 watts•  $10 /year •  $2.50 / year •  $1 / year•  85 BTUs •  30 BTUs •  3.4 BTUs•  Fragile •  Fragile •  Durable •  Mercury •  Non-toxic •  Temp Sensitive •  = freakin’ awesome
  6. 6. Why LEDs are so freakin’ awesomeIncandescent Compact Florescent LED 60W1,200 hrs 8,000 hrs 50,000 hrs•  60 watts •  14 watts •  7 watts•  $10 /year •  $2.50 / year •  $1 / year•  85 BTUs •  30 BTUs •  3.4 BTUs•  Fragile •  Fragile •  Durable •  Mercury •  Non-toxic •  Temp Sensitive •  = freakin’ awesome
  7. 7. Why LEDs are so freakin’ awesomeIncandescent Compact Florescent LED 60W1,200 hrs 8,000 hrs 50,000 hrs•  60 watts •  14 watts •  7 watts•  $10 /year •  $2.50 / year •  $1 / year•  85 BTUs •  30 BTUs •  3.4 BTUs•  Fragile •  Fragile •  Durable •  Mercury •  Non-toxic •  Temp Sensitive •  = freakin’ awesome
  8. 8. Pricing50Watt Incandescent Replacement = $14.50
  9. 9. 40 sec. LED case study • Portland, Oregon USA • Replace 13,000 Incandescent traffic light lamps with LEDs (150 watts each)
  10. 10. Project Highlights
  11. 11. Automotive Use
  12. 12. “Due to their smaller size, increased durability, increased lifespan and lowenergy consumption, LED lighting systems will undoubtedly take over as theprimary lighting source in future vehicles.” -Audi Motors
  13. 13. Style…
  14. 14. Design The Peace Bridge connecting Buffalo, NY, USA and Ft. Erie Ontario, CA
  15. 15. PracticalityThe MoonLight by Kamworks
  16. 16. Photo by: Mathieu Young
  17. 17. Photo by: Mathieu Young
  18. 18. Questions?I Invented This

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