Have you seen Purple/UV Street Lights around you?
(www.bitchute.com)
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It's actually not something covert. It's a manufacturing quality problem wherein components fail and the units have to be replaced with better quality devices. However this purple light problem is real and is widespread in some communities.
If it hurts, the lamps may be putting out a lot of ultraviolet. Here's a test: have something that is fluorescent orange. If it appears bright orange at night under the lamp, that's a sure sign this is an LED lamp whose internal phosphor has failed and it lets dangerous UV from the diodes out. (UV causes fluorescent materials to glow and actually emit light.)
A white light LED works like this: the LED actually puts out ultraviolet at the core. The LED converts that to white light by having a phosphor coating around the emitter to do that, they operate just like a standard fluorescent tube light. In the street lights with a manufacturing defect, the coating degrades and lets purple and UV out. And that damages eyes.
This may be topnotch Chinese LED quality here, where they are shoddy just to save a penny.
If the light hurts your eyes at night, blueblocker glasses can stop the UV. They will look clear for ordinary light but they block UV wavelengths. Might be useful for a cop on night patrol.
You actually think damaged lights begin to emit UV light?
Give me one example of your absurd statement, please. One. Single. Example.
Please.
I actually have some respect for you, so I will not give a snarky reply. Here's my background and indeed, one example:
The guy is mostly correct on the cause, degradation of the phosphor (not phosphate though). But he's wrong in that the degradation doesn't turn the LED itself to UV - that is fixed forever by quantum mechanics factors. See #3 below.