Considering the danger with ir leds by themselves is that you can be looking at a bright light and not know it (while it is damaging your eyes all the same), would it be safe to combine low powered (eg. 3mm 20mA 2v) ir (850nm - 880nm) leds next to slightly higher powered (eg. 5mm 60mA) red leds. Mounted on a large board area so there is no strong point source either and so it simulates the effect of ir as a component of a red light spectrum with leds without the danger of ir by itself by placing ir leds are close as possible to red leds.
If so what ratio or power of leds and spacing would need to be used to maintain safety?
Perhaps also with a mesh in front at a safe distance so you could not get too close.
Is there a way to do it well within margins for eye safety?
Or would it be too risky and better to stick with broad spectrum lighting (like incandescent)?
Although my idea would not have it placed in front or anywhere close to your face like this, but off to the side or overhead at a much greater distance where you would not be looking at or into it, except the occasional glance.
Heres the full article
https://www.facebook.com/notes/skinstation/red-light-therapy-led-vs-ipl/470634932960113
more examples
http://www.theledman.net/order.html
If so what ratio or power of leds and spacing would need to be used to maintain safety?
Perhaps also with a mesh in front at a safe distance so you could not get too close.
Is there a way to do it well within margins for eye safety?
Or would it be too risky and better to stick with broad spectrum lighting (like incandescent)?
Although my idea would not have it placed in front or anywhere close to your face like this, but off to the side or overhead at a much greater distance where you would not be looking at or into it, except the occasional glance.
Heres the full article
https://www.facebook.com/notes/skinstation/red-light-therapy-led-vs-ipl/470634932960113
more examples
http://www.theledman.net/order.html
