UV Glass
 

Hey, sorry to take you guys away from all the drama of the other thread :razz: but can someone tell me if there is a way to tell if glass can block UV by looking at it? I've heard many conflicting things where some say all glass blocks UV and others say that only tempered glass or coated glass blocks UV. Just wondering if UV glass has a slight tint or color to it?

Thanks.

I could be way off, but as far as I know only some polarized glass can block UV rays.

not sure. i do know that all glass doesnt block UV tho or you could not get a sunburn in a car with the window up :)

I'm a bit confused as to what you mean. Did you mean to say that all glass DOES block UV or are you saying that windows in cars are coated? I didn't think you could get a tan with the windows rolled up in a car...

Sure ya can :)

Drive down I-5 on a day when its 115 out in california :)

Ahh, I get you now. Thanks.

glass
 

well, actually all glass does block some to a certain extent but they make different tints for sunglasses and such. I'm almost certain the glass used for UV shield for DE lights is regular glass but the glass refracts some of the rays. if you kept your arm underneath a SE lamp long enough you'll get burnt,

any glass will block the harmfull UV rays, the UV A that gives you a suntan is not the UV we are concerned about as much as we are UV B and C. and UV C will be totaly blocked by glass and UV B will be almost totaly blocked from what I have been reading.

Steve

So what You're saying Steve is that if a person was to DIY a set of DE lights useing regular glass they shouldn't have anymore problems with UV than if they bought a factory fixture?
If so I'll DIY my lights. :cool:

pretty much, there were a few threads on RC about this and if I remember corectly they were just using regular glass in the fixtures.

Steve