Hmmm.... magnifying it....

Maybe the term you where looking was 'collimating' the light.... getting it all together...

Anyways, I've always had an idea... to do an 'optical chamber' which is basically a cool tube. So you put your bulbs in there, and all it's light, you 'collimate' towards one 1" diameter point. On that point, you place a bundle of fiber optic cables.

Then, you can grab the fiber optic cables and place them as you desire.... Over the plant... under it... light on the stems... light on the secondary growth... light there.... light here... etc.