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Reputable Stores for UV Eye Protection?

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Algoma:
I figured you were dealing with something more like this. https://www.krackeler.com/catalog/product/4630/Blak-Ray-174-B-100-Series-High-Intensity-UV-Lamps

and these only reach 8,900 µW/cm2 at 25cm distance.  (8.9mW/cm2) with a 100Watt source

Some light reading on the  Australian Government Occupational Exposure to Ultraviolet Radiation:
https://www.arpansa.gov.au/sites/default/files/legacy/pubs/rps/rps12.pdf

https://www.attar.com.au/occupational-exposure-to-black-light-ndt/ has a good summary of the document. That above lamp would have a 20 second unprotected eye exposure limit.  Your LED in question looks to be within the 15 minute exposure limits for unprotected use up close.


Datasheet for the LED in your light: (See Page 18 for Classification and Page 21 for recommended protective glasses specifications)
https://led-ld.nichia.co.jp/api/data/spec/led/NCSU276CT-E(5581B)U365x.pdf

Also See:
INTERNATIONAL COMMISSION ON NON-IONIZING RADIATION PROTECTION
(ICNIRP)GUIDELINES ON LIMITS OF EXPOSURE TO ULTRAVIOLET RADIATION OF WAVELENGTHS BETWEEN 180 nm AND 400 nm
https://www.icnirp.org/cms/upload/publications/ICNIRPUV2004.pdf



Zero999:

--- Quote from: Algoma on January 26, 2022, 12:56:46 am ---I figured you were dealing with something more like this. https://www.krackeler.com/catalog/product/4630/Blak-Ray-174-B-100-Series-High-Intensity-UV-Lamps

and these only reach 8,900 µW/cm2 at 25cm distance.  (8.9mW/cm2) with a 100Watt source

Some light reading on the  Australian Government Occupational Exposure to Ultraviolet Radiation:
https://www.arpansa.gov.au/sites/default/files/legacy/pubs/rps/rps12.pdf

https://www.attar.com.au/occupational-exposure-to-black-light-ndt/ has a good summary of the document. That above lamp would have a 20 second unprotected eye exposure limit.  Your LED in question looks to be within the 15 minute exposure limits for unprotected use up close.


Datasheet for the LED in your light: (See Page 18 for Classification and Page 21 for recommended protective glasses specifications)
https://led-ld.nichia.co.jp/api/data/spec/led/NCSU276CT-E(5581B)U365x.pdf

Also See:
INTERNATIONAL COMMISSION ON NON-IONIZING RADIATION PROTECTION
(ICNIRP)GUIDELINES ON LIMITS OF EXPOSURE TO ULTRAVIOLET RADIATION OF WAVELENGTHS BETWEEN 180 nm AND 400 nm
https://www.icnirp.org/cms/upload/publications/ICNIRPUV2004.pdf





--- End quote ---
I agree. Here's a data sheet for the LED I've used at work, prototyping a new UV system of a fluorescence application. The one I was using outputs 15.6W (not 10W, I was mistaken earlier) of flux around 395nm. It set fire to a piece of paper placed around 1cm away from it. I do wear UV safety glasses, when I'm very close to it, but I've been told it's safe for passers by not to wear any protective eyeware, as long as I have it pointing towards the wall.

https://download.luminus.com/datasheets/Luminus_SBM-120-UV_Datasheet.pdf


--- Quote from: AntiProtonBoy on January 26, 2022, 12:30:25 am ---
--- Quote from: Algoma on January 25, 2022, 09:06:29 pm ---but its only a 2W LED flashlight here.

--- End quote ---
It's not just "only a 2W LED flashlight", it emits 1000 mW radiant flux in the 365 nm UV spectrum, with a beam spread around 3 to 5 degrees. I put my hand in the way I can feel heating effects on the skin. Part of that is undoubtedly is caused by IR, but a much of that is cased by UV absorption. Incidentally, IR eye protection is another thing to consider as well when working with unusual light sources like these (the UV band pass filter I attached to the torch is also transparent to IR).

--- End quote ---
Which is bugger all really. 365nm has similar properties to visible light and is only a bit more dangerous than visible deep violet. You get a higher dose of UV on a hot summer's day, long before you start to burn.

Don't stare at the beam too closely, wear sunglasses if you're really worried and relax.

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