Are there any "Broad Spectrum" blue LED's?

[R_Mc]

So here we have a "broad spectrum green" led based on phosphors and filters - are there any broad spectrum blue LED's?

http://www.laserfocusworld.com/arti...ghting-goes-far-beyond-replacement-bulbs.html

 

[Timfish]

I'm sure somewhere someone has experimented with the idea. The economic reason for developing the green phosphor/filter combo is effecency "State-of-the-art direct green LEDs have 20–25% external quantum efficiency, whereas blue is 50–60% . . . When direct green LEDs achieve 50% [efficiency], then RGB lighting will have better efficiency than blue plus a phosphor." With blue LEDs there is a whole range of wavelengths available. It doesn't seem to me there's much of a need to develop and market a wide spectrum blue LED using blue phosphors.

 

[R_Mc]

But...I want one...

 

[R_Mc]

I suppose this would do though it's not the same as a nice broad smooth source http://www.ebay.com/itm/Cree-XPE-Ro...132?pt=LH_DefaultDomain_0&hash=item35e3a6635c

 

[dinonightmare]

You could also try a couple different blue leds to get more of a spectrum:

http://www.rapidled.com/royal-blue-and-blue-leds/

 

[Jocko]

Can you speak a bit more to what you are trying to accomplish? For instance, blue, royal blue and 420nm violet will take care of that end of the spectrum just fine. But are you specifically looking for something in the form of a single emitter? If so, is it more for the small form factor of a single emitter? Or is it to avoid the "disco ball" of multiple emitters? Or something else entirely?

 

[jedimasterben]

As of right now there are no phosphor converted blue LEDs. They would have to start with low violet or UV LEDs as a base and apply the phosphors, which would give pretty terrible efficiency.

 

[R_Mc]

Going to bump this once more to see if anyone has found a broad spectrum blue. Hoping to use one as a moon-light / still haven't had much luck.

 

[jedimasterben]

Nope, still don't exist.