My main concern is natural light. My collection is in a room with windows, but I have good shades and blinds that keep out direct light, and I never open them. It can be a bit depressing not having natural light. Incandescent and flourescent bulbs emit some UV, but generally not a concern unless you have very valuable items susceptible to fading.
I have CFL bulbs in my room, and haven't noticed any issues in 20 years. I do keep the lights off when I am not in the room. If I collected autographs or high priced cards I might even think twice about CFL bulbs. If you have any worry, use LED, as they emit little to no UV.
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