CBS News - Pharox Led Lamp 4 W replaces 40 W

[H1RNR1SS]

In 2008 I bought 2 of those LED bulbs (35,- € each). It was a big disappointment. It is NOT comparable to a 40W incandescent, instead is on the brightness level of 25W incand. The light color is cold and greenish (very noticable in the video above). And the not-so-impressive brightness decreased over time. After only 1,5 years (about 4000-5000 hours) the lamp only glimmed when switched on.

Lemnis Lighting was one of the pioneers in providing LED bulbs, but they didn't keep, what they promised.

[Mooshta]

There is one point of comparison between halogen and LED that is a bit of a sticking point - and that is total lumen output. Research has shown that an LED bulb can have a similar beam angle (FWHM - full width at half maximum), similar CBCP (center beam candlepower), yet lower total lumens than a halogen lamp. This is due to the fact that many traditional lamps emit significant amounts of light backwards, which, in many cases does nothing for the application.

Currently $29.96 @ kuuala (dot) com

[Mooshta]

There is one point of comparison between halogen and LED that is a bit of a sticking point - and that is total lumen output. Research has shown that an LED bulb can have a similar beam angle (FWHM - full width at half maximum), similar CBCP (center beam candlepower), yet lower total lumens than a halogen lamp. This is due to the fact that many traditional lamps emit significant amounts of light backwards, which, in many cases does nothing for the application.

Currently $29.96 @ kuuala (dot) com

[Coiltec]

LEDs have one huge problem: The efficiency decreases when the LED gets hot, and above ~125 degrees Celsius ist gets destroyed.

So the LEDs must be cooled. And it isn't that easy to build a (for example) 10 watt LED lamp in the shape and size of a normal light bulb, because the cooling is a big problem.

This is also the reason why most manufacturers use for example 100 tiny LEDs instead of 3 high-power LEDs: The 100 tiny LEDs are easier to cool.

But LEDs are the future of light, I think!

[RoteKampfSocke]

edison didn't invent the lightbulb ...

[order9066]

@RoteKampfSocke Agreed. It's more accurate to say he made the lightbulb commercially viable. All the european lightbulbs created before Edison's burned-out after a few hours.

[KB3MMX]

LED's are the future of lighting !!!

[744682532]

Why can't they just increase the size of the LED bulb?

[hawkermustang]

The Hawker 900 xp. business jet now uses led landing and taxi lights and they are very bright. They are brighter than the incandescent and Hid bulbs they replaced and put out much less heat. The incandescent bulbs would put out so much heat that they melted the landing lenses if you did not turn them off right away.

[eymey]

For all the sceptics here... this IS new! ;-). Yes you are right, for several years you can already buy LED bulbs and other formats at local hardware stores. But I have such a led bulb, which claims to replace a 25 watt bulb, bought at the Gamma hardware store (well-known in the Netherlands and Belgium) and it is crap.

In a test on Dutch television, I recently saw a test of LED bulbs and the 4 watt bulb of Lemnis (the Pharox led) came out best! Truly shedding a lot of light!

[alphanoluco2]

Nothing new, just dutch sales men...

[alphanoluco2]

Would you sacrifized your eyes quality to save a few cents.... those light are tiring, no real color (just using phosphorus to create an illusion of color light) and the price is not saving anything

[hawkermustang]

The Hawker 900 XP business jet uses only LED's to light the cabin and they work very well. They replaced the long florescent bulbs with long LED light strips that equal the light output and they work very well. As of now no small LED bulb can replace a 75 or 100 watt bulb though.

[hawkermustang]

I bought a home led light bulb that is 1.5 watts and it claims to replace a 40 watt bulb, but it does not, it is about like a 10 watt bulb.

[Richard482]

An LED bulb uses 10% the power of an incandescent so it was wrong for them to say a 1.5watt would replace a 40 watt bulb. It would take a 4watt LED to do that

[adonian]

you can get similar (SIMILAR DONT FLAME ME) on flea-bay, sure most dont come in globes and aren't quite as bright, but you can get them for $8 on up. I got a flood light for $5.00 to put in a celing can light fixture, and it's ok.

[Psychedalien]

great!!!!

[47f0]

1) They say the bulbs are $59. That is not currently true - upscalelighting (dot) com has them for $39.

2) They really should have done an energy savings comparison - yeah, at $39 the bulbs are pricey up front, but over their lifespan, they're quite cheap.