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What use do you have planned for it?
I’d go for the convoy. It’s a good deal. Nichia UV leds cost quite a bit on their own.
Go for the Convoy. I’ve had both and I like the Nichia better.
Contact Simon, tell him you are from BLF and want to purchase with PayPal so you can get the BLF 20% discount. Give him your PayPal email address. Simon will then send you a invoice through PayPal. Log in to PayPal, pay Simon and then wait for your your new toy to arrive in the mail.
Convoy UV in action.
Agreed, the Nichia’s seem to offer the best UV output with the least visible light. My LED Engin LZ-1 shows considerably more visible light than the Nichia 233A. The only other potent option is excessively expensive and difficult to make happen.
Since the idea of this seems to be to defeat Ali, why don’t you supply Simon’s email, so they are not passing the message?
Until you mentioned it, I didn’t have his email address. But a quick forum search turned this up.
https://budgetlightforum.com/t/-/20088
————simon
Email: 468924022@qq.com
my aliexpress store: http://www.aliexpress.com/store/330416 skype: simon.maomao
Be careful, too much will have your eyes hurting even if don’t look straight at it. Find you some UV blocking safety glasses, usually yellow in color, WalMart has some I think.
Clear one’s probably won’t do it, this is a 365nm spectrum that’s below visible light, you need a tint that will block that, which is typically yellow.
Dang, didn't know clear polycarbonate lenses filtered UV
Sure that isn't a misprint from Amazon?
- Polycarbonate lens resists impact, has anti-scratch coating to prolong lens life, and filters out UVA and UVB light with wavelengths up to 400 nm
REALLY???
Get uvex clear or yellow glasses.
They publish transmission charts.
I checked my clear Bollé safety glasses by shining a Nichia 365nm flashlight through it on a piece of copier paper. It really blocks it very well, like more than 99%
Transitions glasses block the UV as well, using it to turn the lens very dark, like limo tint dark.
Regular sunglasses are advertised 100% UV protection. I think it more likely to be UV400…Am I right?
Doesn’t Polycarbonate pretty much block UV, no matter the tint or lack of it?
If that were true, then a polycarbonate TIR would not allow UV through, right? I can test that pdq…
Edit: My big 45mm Ledil TIR allows the Nichia NVSU333A to shine through just fine. So it’s not the polycarbonate material itself.
You're a bit OCD, I've seen those Ledengin dies worse off-center (they have a bad reputation over here for that). Dunno about the donut hole, the die is facetted but I would not expect a donut hole from that with the OP-reflector.
At less than two feet, the donut hole is probably because the area around the LED, inside the reflector and maybe the inner part of the reflector, doesn’t reflect much light forwards.
The Convoy UV has been pulled temporarily because Simon found a cheaper Nichia source. When the BD04 UV will return with a cheaper price along with a S2+ UV.