I used to use the kind of flourescent bulbs that are full spectrum (or that mimic natural light) in light boxes for viewing 35mm slides. If you want to buy the bulbs thay are 5000K (K is for Kelvin) to 5400K. They fit into flourescent fixtures and come in several lengths. Check camera stores for them. Online I'd check B&H Camera, Samy's, Ritz Cameras, Freestyle (sorry I can't find my bookmarks for the URLs). They generally have some of the best prices. I don't know if the lumens are high enough with these bulbs, but they are professional bulbs and I thought the information might be worth throwing out there.