ok then i will go to home depot and get some "lexan" ... how close can this "lexan" be to the bulb ?
looked up lexan on google...and i found that it can take temp between -40 to 100 degrees celcius so i guess rather close to the bulb..needs to go before the lcd anyway...best way to find out..go to radioshack and pick up a cheap digital thermometer...that way you will know if your lcd is getting hot or not...cause UV isn't the only thing that can kill and lcd...heat can too
Good old Home Depot. When ever I ask for something they just point me to a different section, which they are not responsible for. I guess they due have a lot of items.
I think lexan can take a bit more heat. This is what I have found:
LEXAN polycarbonate changes slowly and in linear fashion with increasing temperatures up to 300°F (150°C), where the material begins to soften. Softening continues until it melts at about 420°F (215°C).
I think lexan can take a bit more heat. This is what I have found:
LEXAN polycarbonate changes slowly and in linear fashion with increasing temperatures up to 300°F (150°C), where the material begins to soften. Softening continues until it melts at about 420°F (215°C).
hmm just been to home depot and they don't have any lexan ...
whats that for is that used for windows ?
whats that for is that used for windows ?
boris where are you in canada? i am in toronto and found it here..its in the window area in the back...
if you really cant find any tell me which of the 2 sizes i posted and i can get it for you if you pay for it and shipping
dont ask for it...they dont know anything at home depot it seems...everytime i go they never answer any question i have...just look for it...i found it in the back of the window area ..it was near the lumber...it was in a rack..
if you really cant find any tell me which of the 2 sizes i posted and i can get it for you if you pay for it and shipping
dont ask for it...they dont know anything at home depot it seems...everytime i go they never answer any question i have...just look for it...i found it in the back of the window area ..it was near the lumber...it was in a rack..
just got some lexan .. is this the right kind because it looks like a regular plastic sheet ? the guy at the store sed that it has a UV protection on it but i don't see it ? so is this the right lexan ?
W
willie
The lexan should have a green plastic film on one side of it. That is the side that has the UV protection on it. That side should be the side facing your bulb. Of course you'll need to pull off the plastic film first. I left a small piece on the corner of mine, so I'd remember which side was the filter side, because without it, there's no way to tell.
He shouldn't have sold it to you without the film. Actually both sides have a protective film on them, to protect from scratches. The normal side is white, and the UV side is green. The Home Depot in my town sell's 8"X10" pieces for about $2.50.
He shouldn't have sold it to you without the film. Actually both sides have a protective film on them, to protect from scratches. The normal side is white, and the UV side is green. The Home Depot in my town sell's 8"X10" pieces for about $2.50.
i have the film on both sides .. thanks for explaining this to me .. i had payed a 15.5X15.5 pice $10 .. i couldn't find any at Hope Depot here in london .. so i had to go to some shop called "Cadillac Plastics" they had it ... thanks agein ...
which side sould be facing the bulb the one that didn't have the writhig on it (blank side ) ? or the side that had the writing ?
W
willie
On mine, the side with the writing was the clear side. The blank side should be the side facing the bulb. But if you're totally unsure you should ask the store where you bought it.
what do u mean when u say "the side with the writing was the clear side"
the lexan that i got looks like those plactic sheets ? its clear on bouth sides ? and its 8 mm thick ?
the lexan that i got looks like those plactic sheets ? its clear on bouth sides ? and its 8 mm thick ?
W
willie
Yes, the Lexan clear on both sides,...but when you bought it, it should have had a plastic film on both sides to protect it from scratches. On one side the film should have been white with writing on it. On the other side, the film should have been green. After you remove the film, the side that had the green film on it should face the bulb in your projector, as that is the side that has the UV filter on it. Again, if your unsure just go ask the store where you bought it.
yeah ok i had it the right way then thanks .. ... how long can the lcd last with out the uv protection sheet ?
uhh, what a nonsense thread. six pages.
all you people buying lexan......... its useless !
try to get a cold mirror reflector to reduce heat. it'll extend the life span of the lcd.
safety glass, as used e.g. in doors will help alot blocking uv.
they have a plastic foil inside ( same like car windshields) blocks more uv than ordinary glass.
or spent big $ on a specific UV-IR coated glass from schott.
all you people buying lexan......... its useless !
try to get a cold mirror reflector to reduce heat. it'll extend the life span of the lcd.
safety glass, as used e.g. in doors will help alot blocking uv.
they have a plastic foil inside ( same like car windshields) blocks more uv than ordinary glass.
or spent big $ on a specific UV-IR coated glass from schott.
W
willie
How is spending less than $3.00 for a UV filter useless? Just because somebody does something different than you doesn't mean it's useless. Don't be such an ***.
I_eat_flowers, the safety glass will bend your light output and also block more light than a uv filter, so i would sugest a uv filter over the safety glass you are talking about.
I don't know if anyone is interested, but I've got a supplier of UV protected glass that is identical to what is in your windshield. I know someone said that it doesn't transmit as much light as a UV film will, which is most likely true, but you'd need to add that film to a piece of glass, and the overall transmittence is probably comparible (in my experience it is).
I think that the bottom line is that any protection is better than none. I'm skeptical of lexan, but UV filters will obviously protect you from a bit of UV (or at least I'd hope so 😱 ). The glass we get blocks better than 99% of UV. I'm not sure what UV film does. The UV glass I get has a layer between two pieces of glass for filtering UV... my point being that it is thicker than what I imagine a "film" would look like.
I have no markup on my glass, so I can say this as a truly unbiased 3rd party - get UV (safety) glass or add film to your existing glass based upon what makes the most sense to you. The only benefit that I can see to using safety glass is that the filter is pressed into place pretty well, so I don't think I'll ever see any air bubbles between my glass and filter. Oh, and I think safety glass is also probably tempered (added bonus if you want that).
I think that the bottom line is that any protection is better than none. I'm skeptical of lexan, but UV filters will obviously protect you from a bit of UV (or at least I'd hope so 😱 ). The glass we get blocks better than 99% of UV. I'm not sure what UV film does. The UV glass I get has a layer between two pieces of glass for filtering UV... my point being that it is thicker than what I imagine a "film" would look like.
I have no markup on my glass, so I can say this as a truly unbiased 3rd party - get UV (safety) glass or add film to your existing glass based upon what makes the most sense to you. The only benefit that I can see to using safety glass is that the filter is pressed into place pretty well, so I don't think I'll ever see any air bubbles between my glass and filter. Oh, and I think safety glass is also probably tempered (added bonus if you want that).
- Status
- Not open for further replies.