well you have nothing to worry about...the uvb dissipates 10-12 inches from the bulb, unless you get one of those new ones from Big Apple Herp which i would highly reccomend. This will emit the UVB up to 3 feet from the source of the bulb. But still, you dont really have any need to worry about this, unless you let the light shine on you for hours and hours at a time, and then the only thing that you would get would be a mild sunburn. UVB is also known as SUV, or Sunburn UV. But as I said, at such a low intensity it would take quite a while to get a burn from it.
Only thing is if you have this cage say next to your lazy boy recliner and have it so the light is shining on your legs, and you lay there every night from 6-10pm 7 nights a week, after 10-15 years you may develop some melanoma...but just from the refraction of the light, i would say you have nothing to worry about. If all else fails, take some 1/8" acrylic (lexan or crystalite) and line the inside of the cage with it.
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-Chris
The reason mainstream thought is thought of as a stream is because it's so shallow. -George Carlin
A fool doesn't learn. A smart man learns from his mistakes. A wise man learns from the mistakes of others. Which one are you?
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Rat/Corn snake care sheet I wrote
Current snakes:
0.1 Licorice Stick Black Rat (Lola)
1.0 Black Rat (Frankie)
1.1 Texas Bairds (Jose and Rosa)
0.1 Blue Beauty (Brunhilde)
1.0 Green Tree Python (Caligula)... coming soon