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stardustsailor

stardustsailor

Well-Known Member
Products | Colored LEDs | May 23, 2013
Cree Introduces Industry’s Brightest, Highest Efficacy Color LEDs

Cree, Inc. announces commercial availability of XLamp® XP-E2 color LEDs. The new XP-E2 color LEDs deliver up to 88 percent higher maximum light output compared to alternative high-power color LEDs, enabling lighting manufacturers to more cost-effectively address a wide spectrum of applications such as architectural, vehicle and display lighting.

http://www.led-professional.com/products/leds_led_modules/cree-introduces-industry2019s-brightest-highest-efficacy-color-leds

http://www.cree.com/led-components-and-modules/products/xlamp/discrete-directional/xlamp-xpe2
 
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pepperdust

Well-Known Member
stardustsailor said:
Products | Colored LEDs | May 23, 2013
Cree Introduces Industry’s Brightest, Highest Efficacy Color LEDs

Cree, Inc. announces commercial availability of XLamp® XP-E2 color LEDs. The new XP-E2 color LEDs deliver up to 88 percent higher maximum light output compared to alternative high-power color LEDs, enabling lighting manufacturers to more cost-effectively address a wide spectrum of applications such as architectural, vehicle and display lighting.

http://www.led-professional.com/products/leds_led_modules/cree-introduces-industry2019s-brightest-highest-efficacy-color-leds

http://www.cree.com/led-components-and-modules/products/xlamp/discrete-directional/xlamp-xpe2
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now this gets me excited!! only problem.. no 660nm .............



thanks
 
serioussquirrel

serioussquirrel

Member
Composite LEDs have finally hit the growing world. Now high wattage chips (up to 90w) can be fabricated out of handpicked wavelengths and ratios for growing. The 90w is made up of 30 x 3w chips fabricated into one. The design allows for great heat management and dimming control and is driving down the cost of high wattage led systems. So far only one company uses them on grow lights www.secondsunlab.com
DSCF2081C.jpg
 
Positivity

Positivity

Well-Known Member
Secondsunlab!?
more like gehl china..called the noah 4...available on alibaba
300 bucks...save yourself 700
whats up with these resellers crazy markups
 
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pepperdust

Well-Known Member
serioussquirrel said:
Composite LEDs have finally hit the growing world. Now high wattage chips (up to 90w) can be fabricated out of handpicked wavelengths and ratios for growing. The 90w is made up of 30 x 3w chips fabricated into one. The design allows for great heat management and dimming control and is driving down the cost of high wattage led systems. So far only one company uses them on grow lights www.secondsunlab.com
View attachment 2698618
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I believe multi chip units will be the future, to what extent I cannot say, as many they use 4 chip or something like this using many many chips...

thing i wonder though, is I was understanding, actually have the lens dome creates more lumens? or is it someone is not adding something right. I've seen readings on flashlight forums of losses and color difference when de-doming... maybe these are made for a different setup...

anyways, just wondering, but I have a multi chip unit ( SOL 200 watt ) and it seems bright as hell. also there is many companies before this I'm sure ( kessil / a aquarium company was using a 100 watt chip ) , there just now starting to get popular, as I hear also to manufacture is cheaper.
 
SupraSPL

SupraSPL

Well-Known Member
stardustsailor said:
Products | Colored LEDs | May 23, 2013
Cree Introduces Industry’s Brightest, Highest Efficacy Color LEDs

Cree, Inc. announces commercial availability of XLamp® XP-E2 color LEDs.
Click to expand...
Turns out the XPE2 colors are not as exciting as the headlines make it seem. They did spice up the whites, but they are still not as attractive as XTE IMO. As an earlier poster pointed out there is no deep red offering. The blue XPE2 is not competitive with the blue XTE or the Luxeon ES. The red is XPE is the best of its kind but the XPE2 is slightly less efficient :(
 
Positivity

Positivity

Well-Known Member
Squirrel..
i guess that was aimed at me?
i made an account to see pics actually.
Competition? No...just been shopping for a new led and noticed one i was considering getting for sale from a reseller...for three times as much money....better than leaving people in the dark thinking that's their only option...no?
your post did come off a lot like an ad though...sorry if I burst your bubble.
 
Positivity

Positivity

Well-Known Member
Secondsunlab....
dude get the ad straight...it's 90 x 3w
Also at least you lowered the price a little..
is that bud pic actual led? Looks like some hid crispy leaves in there...
hope you upgraded the fans because the unit runs really hot.....
oh yah..are those actual 5w leds or 2 3w chips...
 
L3G4CY

L3G4CY

Active Member
Stardust, you are amazing! Thank you so much for all your great infos on LED's.. you look like a very smart man, keep the good work.
 
L3G4CY

L3G4CY

Active Member
From what I know about OLED's, it a newer technology still in the labs that will be use mostly at first to make thinner products such as screen televisions... it might replace standard LED's but not in a near future I would guess

Near future will be LED as we know being more and more efficient and hope to see more LED's series specially build for horticulture need.. because right now whites LED's are mainly focusing on lumens/watts which is not what plants necessarily wants
 
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lax123

Well-Known Member
for lumens/watts...regarding White lights, i guess u wont find something like par in your typical led datasheet...
 
tags420

tags420

Well-Known Member
You jut have to deal with companies advertising in lumens...specially since horticulture is the last thing most companies label their diodes for...mean their man goal is humans using them to see with. But that doesn'tmean they aren't great and have high par for plants too.
As white led's progress so do there PAR output along with their lumens. This is because a blue diode is the engine behind it(most of them)...and phosphorus is what changes the high par/lower lumen light to a high lumen light that still with a high par reading.
 
PICOGRAV

PICOGRAV

Well-Known Member
I was thinking about how big a diode can get, how come they only make them super tiny, would they not work if you used like a square inch of the crystal? I think the thing I am waiting for or wanting to see, is extra large chips with 1000's of diodes, like 5 inch diameter chips. For horticulture use really I don't think using that much space is that much of problem.
 
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lax123

Well-Known Member
im not sure that is what u should aim for, imo as you should aim with led with for covered "led area" so like the same amount of area like 50cm x 50cm would be better covered with 10 x 10W then with 1 x 100W as u dont what to have one point of origin but the light spread more equally. ur 1000leds sounds more like a "laser" cutting through plants then beeing usefull

not considering that what ive said, i mean why r u wating for this? doesnt say anything about efficiency, whats imo the holy mofo grail
 
PetFlora

PetFlora

Well-Known Member
You have basically described a COB, though I think current COBs are more hybrids, still, I'm of the opinion that the light output of a 10w spot at the farthest 2-4" is not as good as 10 X 1w diodes evenly spaced over the same area, OR, 50 x 0.2w diodes over that same area. Another plus is, they can be significantly closer to the canopy. Mostly, it's about lumens. I base this on my understanding of umols/m^

PICOGRAV said:
I was thinking about how big a diode can get, how come they only make them super tiny, would they not work if you used like a square inch of the crystal? I think the thing I am waiting for or wanting to see, is extra large chips with 1000's of diodes, like 5 inch diameter chips. For horticulture use really I don't think using that much space is that much of problem.
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