ANOTHER 2nd channel video

Note that one of the newer developments of LED lighting for video production is the use of "remote phosphor" LED lights. The LED's are UV, and the UV light hits a phosphor that converts that UV to visible spectrum. Bonus is that the phosphor is similar to the phosphor used in flo[u]rescent lighting. Also bonus is you get much more full-spectrum than what was produce-able from a cluster of monochromatic (RGBWetc) LED's directly illuminating the scene. Also bonus is that it's not a lot of little light sources giving weird shadows, it's a larger phosphor-driven light tube or whatever throwing more even lighting.

This video from Applied Science seems strangely relevant fo how recently it was posted https://youtu.be/vDsjHQPjMVI

Congratulations, you got a UV (mini) flashlight, a UV test card, and they even threw in some stylish prop glasses! Hopefully you can find a use for all those things (other than the advertised use :-) ). Ewen

The clear glasses block UV-A. The LED emits UV-A. The card responds to UV-A. The product isn't a hoax, it's just misbranded, possibly for Chinese to English translation reasons. Mystery solved!

Can u go outside and use the sun to shine through glassed to a white paper with both?thx for video

Seeing your YT in the background makes me want to ask: do you have any suggestions of YTers to follow other than yourself? Obviously techmoan, LGR, vwestlife, bigclive, etc. - any others?

I'd be a little careful here. While I agree that I think this is a borderline scam, you do show the company name on the test card. They may push back regarding your negative comments

Don't attempt to diagnose and treat your own eyestrain. Please see an optometrist and tell him/her your symptoms. If it's not garden variety presbyopia, whatever is going on you want to get it figured out now rather than later.

Blair Witch Connections!!! I can see the benefit of the glasses for holiday makers and equator dwellers if you want eye protection without making the world dull. However if they’re marketed specifically for monitor eye strain then they’ve either massively misunderstood or it’s a scam.

I have a a UV torch and it gives off a dull blue light like the UV fluorescent tubes at a disco. Indeed it fluorescence's when shining on white paper, cotton, etc. That one very likely has a blue LED in addition to UV. Try shinning on some bank notes to see if any hidden text/images light up. Most currency bank notes such as Euro notes have text or images that light up under UV light, but not under regular light.

What I think you've discovered here, other than a horribly misleading and mislabeled product, is that glass blocks some UV light. Based on my google searches of the last 5 minutes, most glass will block pretty much all UV-B and UV-C light, while allowing most UV-A. When you shined it through the glass light bulb, it was blocking some of the UV light. As for the glasses, as others have pointed out, they seem to have a UV blocking coating on them. Source that I used: https://hps.org/publicinformation/ate/q12082.html

Wouldn't it be kind of dangerous to have a uv laser pointer? Feels like that shouldn't be something thrown into a glasses purchase to convince you they're working