I’ve not heard of anything like this being done before @Wintermute
Can you explain a bit more about how / why you’d want to do this? 
This guy seems to explain it very well:
My son works at London Camera Exchange (feel free to delete the reference if inappropriate), and sees a lot of used lenses that have damage to coatings - usually older lenses as the coating material seems to be a breeding ground for the fungus.
There is also a problem with compound lenses (where the “Lens” is actually made of 2 or more lens elements glued together with an optical quality adhesive. The fungus attacks the adhesive and travels through the "lens’.
My idea would be a tray with indentations, each of which contains an UV LED in the indentation, powered by a 5V USB power supply (phone charger - readily available). The number of indentations dependant on the number of lenses you want to cycle through the process. You could probably leave the upper lens cap on to avoid dust falling onto the uppermost lens.
Too much UV light would degrade the lens plastics, (UV: Potential Long-Term Danger for your Plastics | Colortech these polymer chains become,are chalking, crazing and discoloration), so there would be a need to choose the UV light source carefully. My thinking is a low-level source over a short period of time, regularly.
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Fascinating insight, thanks for sharing @Wintermute 
Fascinating, I’ve never heard of this before either, could you use one of these UV torches from Amazon?
Amazon UV Torch
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2 posts were merged into an existing topic: Mavic Pro Filter causing gimbal fault