Project help

[reticulatus]

Hi all,

So it's been almost 5 years since i last came to the forum looking for help with a project. I was told then that the project i was looking at was going to be far more costly than i wanted.

My original post:
http://www.candlepowerforums.com/vb/showthread.php?p=1527666

So, here i am again. Same project, just revised a little.

I want to run a lighting system that produce both normal and UV lighting.
This system would (i hope) be integrated into a timed circuit.

I am open to reducing the range listed in the previous thread for the UV LEDs to 6 inches and i also want to add "normal" white LEDs to the circuit.

I no longer wish to encorporate the project into such a small unit. My dimensions are now much closer to 12x1x3 inches.

So folks, just how crazy is this? Has waiting 5 years done me any good?
I look forward to your replies :thumbsup:

 

[Optical Inferno]

It will be cheaper than 5 years ago but the UV wavelengths you are requiring may still be kind of costly.

Nichia has good high powered and 5mm UV LEDs as well as very good white ones.

Good Luck

 

[reticulatus]

Ok, so what kind of price am i looking at?

 

[Optical Inferno]

Ok, so what kind of price am i looking at?

My quotes after talking to Nichia for their high powered UV LEDs was $65 a piece. The different wavelengths will be different prices though and this one was for the shorter wavelength I think. I know there are less powerful 5mm LEDs but I've never had them quoted. Perhaps someone else will have that info.

High powered white LEDs are not as bad depending upon which ones and how bright you need your looking at about $4-$6 an LED. Again 5mm ones exist but never had them quoted.

You could probably get more from Nichia if you e-mail them directly. They are very helpful and quick to reply with quotes. Or look elsewhere.

 

[HarryN]

Hi, I would look at www.s-et.com. These guys are pretty advanced when it comes to UV LEDs and are generally considered one of the top quality suppliers in that space.

I am sure they are not cheap, but lifetime is also a big deal in that UV range.

They are a spin out of the work at the Univ of South Carolina, which has quite a nice advanced LED program.

 

[Noctilucent]

the level of cheapness definitely depends on which model one would get.. googling about for the UVTOP line, there's numbers...

260 nm, 0.30 mW, TO-39, € 256,60
285 nm, 0.80 mW, TO-39, € 161,60
315 nm, 0.60 mW, TO-39, € 126,10
340 nm, 0.35 mW, TO-39, € 155,40
365 nm, 0.80 mW, TO-39, € 57,80
375 nm, 2.50 mW, T1¾ , € 4,00

.. so the price would still be well over $100 for the 300nm and below range.

Wouldn't non-LED be much more affordable?