Hello, I’m new here. Was looking for a good lighting forum and I’ve stumbled across this community before when comparing NiMH battery cells. Anyhow, I had a salesman give me a sample 10W LED bulb. Looks pretty good but up until now I’ve never heard of the company. He says you won’t see there products at home improvement stores because these lights are built to commercial standards. I’ve currently got the bulb in a 277V fixture that normally uses a 100W MH lamp and it seems to be working pretty good. What really interested me most is that he gave me a presentation where he compared the bulb to a Philips Endura bulb and prove that his is superior. Now I’m a little skeptical, I consider Philps (and Cree) the leader in LED technology, esp since it was Philips that won the L prize.
Here’s the rest of the comparison in crappy quality. (Don’t know how to upload a PDF) What do you guys think? His product seem legit or he just blowin smoke up my ass?
There are a few things that were not highlighted in the comparison.
1) Philips also have (or had) the 10W L-Prize globe. Which was a better globe than the cheaper lower performing 12W version they are using as a comparison.
2) On the 2nd slide they make a big deal about comparing Lux values under the globe. These Philips segmented head globes aren’t actually all that bright directly under the globe. They are brighter at right angles to the globe, but this wasn’t compared.
3) They say the Philips globe is 110V only. In fact there is also a 240V version. It is true the US spec globe won’t work on 240V however.
4) When I measured the Philips LED globe I got slightly better power factor (0.82) and potentially lower temperatures.
5) They didn’t mention dimming performance or price.
6) There is a potential advantage in the remote phosphor Philips are using. It shouldn’t get as hot and so should degrade slower.
They list 2800k, 4200k, 6000k in the ‘comparison’ but do not say which is 10W, power factor 0.91. I’d bet its the 6000k.
Higher color temp is more efficient. You can’t compare a 6000k bulb to Philips 2700k.
With the beam angle 180 & 360, again they list two different bulbs yet only compare the 180 which again makes their numbers seem better.
In the integrating sphere slide they can just switch in their warm bulb & hope no one notices that they never gave number for their different bulbs.
You can always make things say whatever you what. Lie by slight of hand & deception. Bet the ‘salesman’ was fairly good, he needs to be when your selling smoke.
There bulbs are supposedly better then Philips (and Cree) at every point, yet who has heard of them? Also despite the fact that the led tech leaders have vastly more R&D funding.
Certification: laser? How about you throw in FDA too.
Building a bulb to some undefined “commercial standards” prevents it from being sold where they could make the most money from it?
Why don’t they say “Philips” if this data is all true? You are allowed to. If it won’t fall apart.
According to me they are using a generic LED bulb case and sticking Cree LEDs in it. I have seen many bulbs looking just like that all over the place.This bulb is more directional than the Philips.
