Sky blue light
3000 lux
Given by The Doctor :)
Tighter specs:
446-477 nm wavelength
3000 Lux ? (LED specs should give us a good idea of how many LEDs we need for the right lux)
Lighting duration ? (need to read more papers)
Dimming/lighting up ? (simulating dusk / dawn)
Directional lighting ? (do we need to worry about that?)
Anything else?
Refer to papers at: http://www.mcsaustralia.com.au/component/content/65.html?task=view
Need to find some more papers to find out the other stuff.
Ok, so my crappy DSE Z4253 is centred at 470nm and Crees are at 458nm or 475nm. It looks like normal blue power LEDs are fine, with Royalty being better. :P
ReplyDeletePerformance ratings are a bit iffy. Z4253 is 1W input giving 18-29 lumens. Given my brief understanding of conversion from lux to lumens, we'll need to calculate with consideration to how far the light needs to go.
Duration and PWM seems like microcontroller stuff. Unless we want to build it out of discrete ICs. But we could try 'manual' mode first.
Direction - 5mm LEDs are highly directional but we'll probably need tens of them. Power LEDs are spread but there are plenty of lenses available.