If the light is intense enough to harm the aiptasias, it's intense enough to harm you.
Aiptasias under UV light would die in exactly the same way as a human would, so it requires the same type of deal. In fact, eye tissue is many times more sensitive and easily damaged.
I still don't get it. I mean... you are going to take the time to remove the rock from the tank, apply sunscreen, put on a helmet, and start shooting aiptasias with UV... seems like it would be far easier to just drip kalk on them. Additionally, reaching into the tank with sunscreen on your skin is a very bad idea.
If you are having trouble keeping up with them, then the tool I'd recommend is peppermint shrimp. Get a handful of them, as not all individual shrimps will touch it... but if you get 3-5 at least one or two will do it. I used 3 in my reef tank and it wiped out aiptasia... I'm now completely free of it, the shrimp have long aged and died, and the aiptasia has never returned, so they obviously got them all.
Just make sure you don't get camelback shrimp... LFSs don't always know the difference so familiarize yourself with the difference so you can make sure you're getting what you ask for.
I'm not gonna tell you your business... I mean if you want to do it, then do it - I would expect it is possible to build a device to that does it... whether it works well or not I don't know, but I do know that there are more efficient ways to go about this than this.