I saw this light and thout it unique and had to share.
f10 dual led zoomie
Do you think that’s a bright 405nm light source, the wavelength emitted by blu-ray lasers?
That takes a little while before it damages vision — but photons in that range pack a whole lot of energy but appear fairly dim, being being right at the edge of what you can actually see.
I am not entirely sure, I want message the owner and see if he will send me one for review
Its just blue not 405nm. The beamshots show blue and with leds 405nm is normally referred to as UV.
thanks, i was hoping someone that knew more than me about uv/led tech would speak up
I tried to take the phosphor off a spare XM-L but didn’t succeed in doing so without destroying the LED.
i think you may have posted in the wrong thread bud.
Blu-ray FAQ with answers to common questions about the Blu-ray Disc format.
What is Blu-ray? … Laser wavelength, 405nm (blue laser)
It’s in the visible range for most people — right on the edge of visibility, though.
Very high energy photons — even ‘ordinary’ blue can knock electrons out of their orbits. 405nm is intense.
https://www.google.com/search?q=visible+range+"blu-ray"+405nm
Fritz t. Cat may Roam but he is not Lost. 
XML - Phosphor = Blue.
haha
Do an image search for “405nm” — while the eye’s vision sensitivity to that wavelength is low — these won’t appear very bright visually — it’s not zero. You can see that color and it shows up clearly in photographs.
And there are a lot of those diodes available because it’s the Blu-Ray standard light source.
Do a search for “405nm fishing” and lots of hits turn up. I’d guess it’s used for fishing because water transmits that end of the spectrum…
The picture for this item shows a blue beamshot, 405nm shows up purple, often with a pinkish tint on most cameras.
Even for the chinese, using “blu ray” for a 405nm led would be odd. 405nm lasers are referred to by the name bluray only because they are primarily used in bluray players and were originally developed for that use.
I agree entirely that 405nm, UV and even blue is hazardous, will permanently damage vision at relatively low power. The hazard is increased through a false sense of security since these colors appear dim to us.
i contacted the store to see if i could get one for review and they have not contacted me back yet. if i do get one, i don’t mind sending it around for everyone to play with.
I don’t think so, because if we knew how to easily take the phosphor off, say with a certain solvent, we could make any white light we liked Royal Blue, instead of having to chose the light for its color.
thanks Hanh…Posts helpful
homemate
Dude…reduce your pic size 
sorry didn’t know 800x800 was too big for the forum.
so i got an email from the aliexpress store and i maybe getting one of these in the mail soon.
Nice.
I find this 405-410 nm light along with red is being used for acne treatment, fwiw
that’s fairly old, anyone interested should definitely use Scholar and look up more recent work citing this study, which I found at an enthusiast blog
http://www.acne.org/messageboard/topic/118454-bluered-light-faq/ (which does give the very strong warming about protecting the eyes completely)
Later work might turn up something more useful or more cautionary.