Troy,
As I see it the reflectors are focusing the light being emitted by the bulbs. Theoretically you could do this with the sun as well to increase the amount of light is being measured on a specific location. Magnify the sun enough and you can start a fire.. [img]images/smiles/icon_wink.gif[/img] In an audio or radio situation this is called an amplifier. With light I call it a focusing reflector(my own creative wording [img]images/smiles/icon_wink.gif[/img]) Light is just a different wavelength in the electromagnetic spectrum and as such has the same properties as all otehrs such as audio and radio waves do. You can amplify it(or magnify in this case).
I know you know this but here is a pic for those who can't quite imagine it.. [img]images/smiles/icon_wink.gif[/img]
Put the meter where all the light is focusing and you are going to have some awesome light hitting that spot. Imagine it is a coral there.. [img]images/smiles/icon_biggrin.gif[/img] and POW!! SUPER GROWTH! As long as you get it used to all that light that is.