Martin McCormick wrote:
>
>         I am looking for some IR LED's that have a flat face and
> produce a beam.  I am trying to build a device that will let a person
> walk along a beam and track it with one of those IR modules that
> decode a 33-KHZ carrier.  A laser is overkill and would probably
> produce such a fine beam that it would be hard to find.  The IR LED's
> used in remote controls and similar devices are way too broad for this
> purpose.  What is the nomenclature or part number for such a LED and
> can I buy some from digikey or a similar supplier?
>
>         Many thanks.
>
> Martin McCormick

You need a lense, not a different IR LED.
What you're looking for is 'collimation'.

--
Anniepoo
Need loco motors?
http://www.idiom.com/~anniepoo/depot/motors.html