LED output power?

Discussion in 'General Electronics Chat' started by noobuser, Nov 8, 2010.

  1. noobuser

    Thread Starter New Member

    Oct 19, 2010
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    Hi,

    I have a LED with 3.29V drop and at 350mA. Therefore the input power is 1.15W. It also lists the Pout (output power) as 458mW. I'm thinking this value refers to the optical power but i'm not certain. Can anybody provide some input to this?

    Thanks.
     
  2. R!f@@

    AAC Fanatic!

    Apr 2, 2009
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    I guess what u have is a 1W led.

    Optical power is measured mostly in amount of light output which is in lumen.
     
  3. whale

    Active Member

    Dec 21, 2008
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    send me your data sheet........
     
  4. R!f@@

    AAC Fanatic!

    Apr 2, 2009
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    What for?

    Better to ask for the LED :D
     
  5. Markd77

    Senior Member

    Sep 7, 2009
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    I imagine it is talking about thermal dissipation.
     
  6. R!f@@

    AAC Fanatic!

    Apr 2, 2009
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    :confused: HUH!!! thermal what ?
     
  7. Markd77

    Senior Member

    Sep 7, 2009
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    Thermal dissipation is how much power it can get rid of as heat to the surroundings - exceeding it makes it overheat.

    However, I just searched for the numbers and got this:
    So I think I was wrong, it is probably the optical power output - not usually quoted for visible LEDs, but often used for IR leds.
    http://www.ledsmagazine.com/news/3/11/22
     
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