I've seen one or two that the little point on top blew out. I've never seen one completely shatter though. I kinda would like to see one...
So... let's turn this conversation toward safety.
Is there any way to know the lamp is about to go supernova?
How can you prevent injury?
Obviously, as has been mentioned several times in this thread, a safety screen in a PAR is a very good thing and will help. However, it will only catch the large chunks of glass. Is there anything we can do about the small chunks? Is the possibility of a supernova just a danger we have to live with? Is safety the best argument for dumping your old PAR cans and switching to S4 PARs instead?
Should we be installing safety screens in all our fixtures? Clearly, most of us assume that in fixtures like S4 Pars, Fresnels, and Ellipsoidals the lens in front of the lamp will contain the "supernova". I see very few safety screens on any of these fixtures. Is it wise or paranoid to put safety screens on fixtures with a lens?
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