Try looking up the term "SAD Lamp" on google instead - you can find the equivelent
I've always wanted one of those. Steve can wake up just fine in pure darkness, but not me - I need the light. When we lived in Burford it was great because two of the three windows in our bedroom faced east and our bed faced those two windows. I used to wake up quite naturally at 7am with the glare of the sun. Now our only bedroom window faces west, plus the sun comes up from behind the rock, so we don't get really good light in our bedroom until about 11am in winter.