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