LED Foglight Project Options

[Spoke]

The design of an early foglight LED board has begun. mepstein sent me a couple of foglight fixtures to use to design the board. 2 main issues are fitment and heat dissipation. If things work out ok the design should be able to be re-laid out for the later square foglight.

The board will have 8 Cree XP-G3 high power surface mount LEDs with 350ma current each. These will burn about 1W of power with a total power dissipation expected to be less than 10W. Hopefully these will be almost as bright as a headlight.

Each LED will have its own focusing lens. The lenses are Carclo 10192 elliptical 20mm lenses. The light pattern for the 10192 lens is shown below.



This is the spectral dispersion for the lens.

[DRPHIL914]

thanks for taking this on! I asked about this a year ago when I backdated my bumpers and sourced a nice set of OEM NOS early round fogs. I had put the H1 LED bulbs in my late square fogs and they worked fine but this is a much better way to go. I don't want to clog this documentation thread with requests so I will be looking forward to a new thread for purchase of these once you are ready !

I agree about the comments on color, you don't want to go too blue so probably staying closer to the 4000-5000k max would be best - why not a "spectrum" not just one but rather 2or 3 different ones all on the same board , how would that work?

Phil

[Spoke]

I agree about the comments on color, you don't want to go too blue so probably staying closer to the 4000-5000k max would be best - why not a "spectrum" not just one but rather 2or 3 different ones all on the same board , how would that work?

Phil

Not sure what a light would look like with mixed temperature LEDs.

I just ordered 5000K LEDs enough to do 4 boards. We'll see what they look like when put together. Also ordered the heatsinks and all other components. Digikey was out of the Carclo 10192 lenses so I'll order them through Arrow.