The LED in the remote is not driven very hard, only has 3 volts or so behind it and is pulsing.
Take a look at this
http://www.lasertagparts.com/mtoptics.htm
The LEds used are "high power" and you could even use the lens setup for a spot light kind of thing. Take a key-chain LED and a magnifying glass and at the correct LED to lens distance... well you will be surprised. Good for demonstrations.
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