GENERATION-III LED tubes ????

[cali]

hello,

I bought a Led light on ebay a few days ago. I am very impressed with how bright it is. I contacted the company i bought it from to ask who makes there led's and they said that they are GENERATION-III LED tubes. thats all the information they gave me. does anybody know anything about these led's? i googled them and i couldnt find much information on them. Im looking for the specs on them and i really would like to know where i can buy them for future project.. any information is much appreciated!!!

 

[AnAppleSnail]

If you take macro pictures (Extreme, focused close-ups) of the LEDs then maybe we can help you. That's not a part number that will identify a particular LED, as there are all kinds of "Generation 3" (And 2 and 4 and etc) LEDs in the world.

 

[cali]

here is a picture of the led..

They sent me a few specs on the led but they almost seem to good to be true.

They said its a 1 Watt led and the led puts out 320Lm... You guys think thats accurate?

 

[AnAppleSnail]

here is a picture of the led..

They sent me a few specs on the led but they almost seem to good to be true.

They said its a 1 Watt led and the led puts out 320Lm... You guys think thats accurate?

No. How big is the heatsink it's attached to? It may be rated 1 watt and put out 90 lumens, or it may output around 200 lumens and consume 3-5W, but I'm very skeptical of it producing 320 lumens.

 

[cali]

That what i was thinking. It is very bright. I am very impressed with it. but something is very wrong with those specs.

i dont know if i understand exactally what the heat sink is??

And from the picture do you have any idea who makes it? and if not Then what should i do?

 

[cali]

There is no heat sink on the light.. Its in and extruded aluminum rectangular tube basically.

 

[Gunner12]

The LEDs better be well heatsinked or they will cook themselves very quickly. Any decently sized Al or Copper would be perfect as long as the LED is attached well with some kind of thermal material.

As for who makes that LED, I have no idea. They seem like generic LEDs. You could go through the high power white LED catalog of Mouser, Digikey, or some other electrical component supplier and try to match the LED with the pictures, but that will be very time consuming.

You could just use any other white LED too. Doesn't have to be those exact LEDs. Similar ones are also on sale on eBay and they are probably similar in size to the original Luxeon I, III, and V.

 

[cali]

I am very new to the whole led's thing so can you explain what luxeon is??

 

[AnAppleSnail]

Luxeon is an LED brand. There are a few of them. Broadly speaking:

Cree makes the highest-efficiency LEDs at high power. Their most-powerful single-die chip can give 1000 lumens at 100 lumens per watt, if it's properly mounted on adequate heatsinks.
Luxeon has a tint that its fans like. They lag behind Cree a bit in efficiency and raw output.
Bridgelux makes big *** LED arrays, 100W and more. They have decent quality, but faster lumen-loss over LED life than Cree's single-chip units.
Seoul Semiconductors makes big *** single LEDs. The SST-90 takes 40W and gives around 3000 lumens.

LEDs are used in a lot of things. Tiny ones make some cell phone screens. Very bright ones light stadiums. They generally want a lot of current at lower voltage than most bright filament bulbs, and need slightly more electronics to run them.

Generally there are low-power and high-power LEDs. Low-powered ones are plastic bits with wires coming out. They top out at about 5 lumens and 20 mA, and these tend to lose output quickly.

High-powered LEDs can run from 0.5W and up. They usually need a way to remove heat from the LED, since overheating kills electronics. These usually involve a metal body or finned heatsink. Optics, reflectors, lenses, diffusers, and other things are used to shape the light from an LED. A given LED can throw a powerful, narrow spot or light a whole room depending on its optics. A spotlight-style light can be pointed at a ceiling to light a whole room if needed.

 

[cali]

Thanks for the help!!!

 

[saabluster]

Just off the top of my head I say it was an Edison Opto part. There is no way those specs are correct.

 

[Gunner12]

It does look similar to the Edison Opto Edixeon A1 (link). According to the spec sheet, the Max output at 350 mA for warm white is 80 lumen (T3 bin) and the lowest is 58 (S2 bin).

Luxeon made one of the first common high power LEDs, their I series, then the III series can with a similar package but higher current and output capability, and after that they placed 4 LED dies (the actual emitters) on one package and called that their V series. This was before Cree became the big player it is now. The Luxeon Rebel (their current series of power LEDs) are still nice, and some lights do use them.