OSRAM LED passes 100lm/w

[NewBie]

http://compoundsemiconductor.net/articles/news/8/4/24/1

"Osram?s red LED tops 100 lm/W output
27 April 2004

Osram Opto Semiconductors says that its red LED has a record high efficiency.

Germany-based LED manufacturer Osram Opto Semiconductors says that it has made a red surface-emitting LED with a record high luminance.

At 100 lm/W, the efficiency of the device is also thought to be a record for the 618 nm emission wavelength.

The LED, which emits more than 12 lm through a 300x300 µm surface at a 70 mA drive current, incorporates Osram?s thin-film technology.

Osram told Compoundsemiconductor.net that technology used in the latest device will be applied in the company?s second generation of commercial thin-film devices, which are planned for launch as fully-qualified products in 2005.

The brightness of Osram?s LED is very close to another efficient device made by the company?s US-based rival Lumileds.
...
Osram added that InGaN-based blue- and white-emitting devices based on the thin-film technology will be launched within the next few weeks."

 

[Lux Luthor]

Sounds like they're on par with Lumileds' red/orange. If they can use a smaller die (sounds like they can), we should see them in a 5mm package. Nice!!

 

[Doug S]

I seem to remember some company, probably lumileds, breaking the 100 lm/w level with a red-orange in the lab several years ago. I am fairly confident that a CPF member [Evan9162] broke the 100 lm/W level using a Lumileds red-orange under refrigerated operating conditions. Doing it with red rather that red-orange is more challenging due to the lower luminous efficacy of red vs red-orange.

 

[paulr]

I think 618nm (the wavelength mentioned above) is red-orange.

 

[Lux Luthor]

You're right. Red is more like 630-645nm. I guess they're calling 618nm red, but they also say that r/o is a slightly shorter wavelength. I guess they really do mean slightly.

Cool, though, a r/o 5mm (I hope).

 

[PeLu]

[ QUOTE ]
Doug S said:
I seem to remember some company, probably lumileds, breaking the 100 lm/w level with a red-orange in the lab several years ago.

[/ QUOTE ]

Yes, it was at the labs in the Netherlands (was it Eindhoven? I cannot remember). It was the reversed pyramide design.

 

[NewBie]

[ QUOTE ]
PeLu said:
[ QUOTE ]
Doug S said:
I seem to remember some company, probably lumileds, breaking the 100 lm/w level with a red-orange in the lab several years ago.

[/ QUOTE ]

Yes, it was at the labs in the Netherlands (was it Eindhoven? I cannot remember). It was the reversed pyramide design.

[/ QUOTE ]

"Red LEDs - 42 lumens/watt by Lumileds, 28 by ETG, 22-26 sometimes by Agilent.

Red-Orange LEDs - 53 lumens/watt by Lumileds, 21-22 maybe now 28.5 by Agilent, 15 by Toshiba.

http://members.misty.com/don/led.html#o

UPDATE 7/4/2003 - *TEST RESULTS* I did more refined testing on my orange Luxeon LXHL-MH1D at 325 mA. I got 54 lumens/watt with good heatsinking. The voltage drop was on the low side and I expect my 54 lumens/watt may be on the high side.
UPDATE 7/5/2001 - The Lumileds datasheets for their "lambertian"/"high dome" red-orange Luxeons indicate that they produce 39.8 lumens minimum, 55 lumens typical at 350 mA with a 2.95 volt typical voltage drop. This is 38.5 lumens/watt minimum (assuming the typical voltage drop), 53 (corrected 5/25/2003) lumens/watt typical. I expect overall luminous efficacy to be even a little higher at somewhat lower currents around 200 mA. These use those truncated inverted pyramid dice mentioned above."

This is from the LumiLEDs presentation:

Krames(LumiLEDs)- The performance of the AlGaInP TIP-LEDs exceeds 100 lm/W at 100mA dc for emission at 610 nm.

Now someone mentioned at the LumiLEDs seminar that the Luxeon wouldn't go above 1W for the red LED because of the inverted pyramid and heat extraction issues. One of the press releases said the OSRAM part didn't suffer this problem.

Anyone got the link for the actual LumiLEDs press release on their record?

 

[evan9162]

www.lumileds.com/pdfs/techpaperspres/Opto2001.PDF

Page 18.

It shows peak output at about 350mA.