Modding Blocking UV

What can I use to remove UV? Will a thin sheet of white plastik work? I also heard that wax paper works, is this true.

 

remove UV from what?

 

From a light source.

 

Thinking of de-uving blue cathodes? You'll kill the light output you know.

 

No, just a simple light bulb.

 

A light bulb doesn't put out hardly any UV in the first place.

Any special reason you want to do this?

 

monochromatic light, just a guess i really dont have a clue.

 

If you want relatively monochromatic light, you're looking for a LED (not a white one) --if you want something that really belts out light you need a high performance Luxeon LED. If you want really monochromatic light, only a laser will generally do. You can diffuse its output by shining it through an opaque filter.

 

Cause I have some uv sensative equipment I am tring to protect. And I nead to remove the UV from all the lights in the room.

 

Just use black plastic or sheetmetal.

 

I'd guess hes talking about a diy projector. there was talk that a certain type of lexan would block uv, but it would also result in a 15-20% loss of light. I know lumenlab sells the uv protective sheets, other places probably do for a lot less. google it.

 

Hehe, you got me, but I dont realy want to go out and get it. So I was looking for a cheap solution.

 

look theres no cheap way to block uv without spending cash on materials that have been clearly designed to

the uv light from a light bulb is minimal, you should be more worried about the uv that coming from outdoors.


The cheapest thing I can give you is try using artist clear spray. They spray it on their pantings to protect the colors from fading from the sun.

 

As I recall, the high grades of Lexan only allow for 85% of light to pass anyway. Your average glass isn't even as good as that, and adds a green tint to things. High quality acrylic is well into 90%, not sure about high quality glass, but I'm guessing it's less since acrylic is so often used in lenses (but it is cheaper and easier to make, so I'm not sure).

 

Polycarbonate filters out most UV, Acrylic does not unless it's specially treated.
If you contact a local plastics shop they can tell you what you need nad whether or not they have what you're looking for in their scrap pile. In which you can buy sheets for mere dollars per pound.

From what I can tell standard polycarbonate is filtering out 80% of the UV light from my cold cathode. I've noticed no UV light being able to pass through the special UV-protect sheets I have that were meant for use in public transportation.

 

But if your using a diy projector it gives of a **** load more and UV is needed or it ill damage the lcd panel