One mother of a bright LED (in 2004). This LED (Luxeon Star) is 180,000 mcd and draws 1 watt (350 mA at 3.4 V) and was claimed to be the worlds brightest series of LEDs in 2003.
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Since then 5 W LEDs are available (and of course, my 100 W LED).  The one watt white LED has a heat sink and a separate collimator for a 10 degree beam. It cost AUD$36 on eBay. Shown below after I mounted it on some acrylic with a voltage regulator in the handle. The brightness comparison of the one watt white LED with a pencil torch is dramatic and is over 10 times brighter than the LEDs above. It came with its specifications on a floppy disk (remember those?).

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