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Discussion in 'LEDs and Optoelectronics' started by biferi, Oct 22, 2016.

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  1. biferi


    Oct 12, 2016
    I am looking at this LED at SparkFun.
    It says it has a 30 Degree Viewing Angel.

    So does this meen it has a Viewing Angel of 15 Degrees on both Sides?
  2. (*steve*)

    (*steve*) ¡sǝpodᴉʇuɐ ǝɥʇ ɹɐǝɥd Moderator

    Jan 21, 2010
    It means that at 15 degrees from the axis, the apparent intensity falls to half.

    So yeah, that's 15 degrees on both sides. However it will be visible (just dimmer) as you move further and further off-axis.

    Oh, and it's "angle", not "angel" (unless it comes with an imaginary winged being to look at it for you) :)
    Arouse1973 and davenn like this.
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