non UV(A) blocking plastic / lens, any ideas

I'm building a UV(A) 365nm powerLED lamp and need to protect the leds without loosing performance. Does anybody know of a plastic to protect the led without blocking the uv, glass is to fragile (and blocks), it's for heavy use.

lemonie7 years ago
Where are you getting the short(ish) wavelength LEDs? - I'm interested in some myself.
Quartz is great, but it's expensive.
Go with Raving's suggestion of polystyrene.

L
Fonnie (author)  lemonie7 years ago
i'm from belgium, and I found the powerled here at Conrad

http://www.conrad.be/goto.php?artikel=180356

it is 365nm, the problem is the pcb, those i bought at

http://www.led-tech.de/en/High-Power-Supply/Circuit-Boards/MultiLine-Circuit-Board-for-1-3x-LEDs-LT-663_106_111.html

since I needed a lot of power, I need at least 3 led's

combined with a constant current driver

http://www.led-tech.de/en/LED-Controlling/Constant-Current-Power-Supply/BUCK-Constant-Current-Power-Supply--700mA,-30V--LT-1552_118_119.html
lemonie Fonnie7 years ago
Thanks.

L
Clear polystyrene is probably the most UV-transparent clear plastic you're going to find.
Polyethylene and teflon absorb less UV than polystyrene, but are not typically found in clear sheets - cloudy is the best you're gonna get..