red led?

[hoffmyster86]

who produces the brightest thrower red LED these days?

 

[argleargle]

Kill Light XLR 250, 270 red lumens? Keep in mind, they also make it in other colors (so you don't get the wrong one.)

It's been out for quite a while, so I am looking forward to someone mentioning one that's beefier. This was like... 2011, unless I'm mistaken (which is very likely.) There's definitely something better out there.

Update: I got curious and started searching around for the inside deal on reds.

http://www.ledengin.com/files/products/LZ4/LZ4-00R100.pdf
Apparently, they are claiming 440 LED lumens at a measly little 1 amp on a single chip 4-die. They're calling it a "10 watt" led. Just gotta find the optics... The tightest that ledengin offers for this is 14 degrees.

http://www.luminus.com/products/color.html
Luminus says their pt-120/pt-121 reds can top 2000 led lumens without overdriving. This sounds awesome. The picture of the chips is labeled "Phlatlight."

I want a thrower with this! Good grief at the amps!

Also: OSTS Night Master Red :)

 

[bshanahan14rulz]

For throw, I think you want the LED that has the most lumens per area of emitter. Not that lm/mm^2 is some sort of standard measurement, you may have to do some digging and some basic maths.

 

[alpg88]

xpe or rebel, have smallest die, available with red leds. there are other reds out there. but with widely available lenses\reflectors, those two will throw most.

 

[Sub_Umbra]

Do you mean RED (650nm-660nm) like for preserving dark adapted vision or are you talking about RED/ORANGE? Most lights advertised as red are actually ~630nm which is red/orange. They will also appear brighter than a true red...which is why they are advertised as red.

 

[bshanahan14rulz]

SU brings up a good point, that the definition of a lumen with respect to wavelength changes. i.e. a lumen of 555nm may output x milliwatts of optical power, while a lumen of 660nm would be quite a bit more than x milliwatts. You need more power for the wavelengths that our eyes don't see as well for them to appear the same brightness.

Red/Orange would be like, if for some reason you needed a bright red light for some purpose like signaling or something.

I would say, though, that a red laser would generally outthrow red LEDs ;-)

 

[MechE1]

I have evaluated both the Cree XP-E and the Luxeon Rebel and the Cree appears to be much brighter than the Rebel. If you want a lot of light and don't care how much power is required, the Luminus Devices puts out a tremendous amount of light.

 

[alpg88]

yea, cree is brighter, but cree does not make deep reds.

there are 10w deep red leds made by led engin, very high quality stuff, they even make their own lenses for their leds. the leds are, however multi die, like mce or p7. there are lenses made for them the narrowest is 15*, i bought them along with leds, but i have not tried them yet to see how thin the beam is in reality.

 

[jaycyu]

XP-E2 was announced a few weeks ago:
http://reefbuilders.com/2013/05/22/cree-xpe2-color-announced-pretty-major-upgrades/

Now, I only have to wait for that XR-E2. :whistle: