Awaiting
@Cityjohn's Laser device I constructed a LED device. It is not fully finished yet. It operates four 5 Watt LED's. Two 808 Nm and two 620 Nm Led's. LED's are now - hastily - attached to levers which I use to aim at critical area's. I will elaborate on a headphone construction but that will cost another weekend.
The construction has a few options. For example: I can switch the 808's and 620 on/off independently.
View attachment 12024
In this picture they are both on (the 808's are hardly visible as this frequency as at the end of the human visible light spectrum)
All 4 LED´s are attached via the power drivers (4 little boxes) and the switches for the LED's (two white switches) to a grey little box you can see on the background. That box is attached to the electricity network and contain this electronic circuit:
View attachment 12025
It allows the LED's to pulsate. I can adjust the pulse-frequency and duration how long/instense the LED's will burn. I will use this device half an hour a day to start with.