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Sylvania 12w UltraLED against halogen, Philips AmbientLED, and CFL

Sylvania 12w UltraLED against halogen, Philips AmbientLED, and CFL

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The lights are a lot brighter than this photo would indicate, but it is the closest in color I could get. Clockwise: Philips 72w EcoVantage clear halogen, Sylvania 12w UltraLED, Philips 14w spiral CFL, and Philips 12.5w AmbientLED. The Sylvania has very good color as far as LEDs go, but looks quite orange/pinkish compared to the incandescent/halogen lamps due to 6 red LEDs mixed in with 6 warm white LEDs to achieve the desired 2700K color temperature. For more technical info check out the photo of the Sylvania lamp itself.

2012-10-27_14-37-46_648.jpg 2011-06-28_20-40-39_435.jpg 021211200816.jpg 2011-01-19_18-45-54_396.jpg

Light Information

Light Information

Manufacturer:Osram Sylvania
Lamp
Lamp Type:LED/solid state
Base:Medium E26s
Shape/Finish:A19
Service Life:25000 hours
Electrical
Wattage:12w
Voltage:120v
Optical
Lumen Output:810
Color Temperature:2700K
Color Rendering Index:90
Physical/Production
Dimensions:About 4 3/4 inches
Factory Location:China
Fabrication Date:2010

File information

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Album name:silverliner / not so pleasant sights
Keywords:Lamps
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Date added:Feb 12, 2011
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RCM442
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rcm442 rcm442 rcm442
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Feb 13, 2011 at 01:16 AM Author: RCM442
I still like the incandescent the best! I wonder if it's possible to achieve 100 CRI on an LED or CFL!

Linear fluorescent will never lose to LED!
I am not Anti-LED, as I have some in use at my house.
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Silverliner
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Verd a ray classic.


GoL
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Feb 13, 2011 at 03:07 AM Author: Silverliner
UPDATE: The color shifts on the LED! Looks very pinkish orange when turned on cold, but turns towards an incandescent-like color with a slight hint of pink after maybe 30 minutes of operation. Does temperature cause this?

May all the great lighting technologies have their place in history.

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Feb 13, 2011 at 05:56 AM Author: Medved
@RCM442: Not 100, but very close yes.

By the way high efficacy IRC incandescents do not have exactly 100 either, as the IR reflection coat affect the visible light as well (but these are really close to the ideal 100, but they would become a bit worse as a result of the desire of efficacy improvement - the deep red carry significant amount of energy and add nearly no lumens, so there would be the desire to reflect it back to the filament as well. But is still important for really accurate colors)...

And if speaking rigorously, no existing material may reach CRI=100, as it is defined as black body radiation, what mean radiation of an object with 100% light absorbtion over whole spectra and no material with such properties exist... However this is really only an academic statement...

No more selfballasted c***

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Feb 13, 2011 at 11:13 AM Author: Silverliner
Halogen IR lamps have a CRI of something like 99. Gas filled incandescent lamps are around 99.5, vacuum incandescent lamps are a pure 100 CRI. If you can tell the difference in color appearance under CRIs of 99 and 100, type away here lol.

More about the color shift during operation, I noticed when it was in the fan above, the light looked almost exactly like an incandescent, just a tiny vestige of pink. It looked more pinkish in base down position. I wonder if heat affects the color appearance.

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don93s
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Feb 13, 2011 at 11:18 PM Author: don93s
Interesting...I haven't studied much in LED. The color shift is a little surprising but not unexpected, imo. They are still a solid state device and solid state does change characteristics with temperature increase now that I think about it.
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