Phillips 'Ultra-Efficient' bulbs? (inspired by Dubai lamps?)

[DudeMan]

BigClive just uloaded this video about Phillips releasing an “ultra-efficient” lamp similar to the Dubai lamps.

Inside a new Philips ultra-efficient LED lamp (with schematic)

sadly it looks like they are aimed at the European market @ 50-60hz 220-240v as i couldn’t find any for 120v.

i’m tired of LED bulbs cooking themselves to death.

[flashflood]

Waveform Lighting makes several outstanding high-CRI (95+) bulbs and strip lights. I’m slowly replacing Soraa with these.

Next Generation LED Lighting | Waveform Lighting

[iamlucky13]

Looking at the phosphor color, I couldn’t help but wonder about the color quality.

The box does say 80 CRI (mediocre, but not bad), but Clive noted:

the color i would say this is is a soft white biasing very slightly towards the green area of the spectrum which makes sense because the human eye has a peak sensitivity of around about 555 nanometers which is a sort of um aptly green color and they might be aiming for that uh just to improve the efficiency

I’m not surprised, but would rather Philips offer me a 5W or so, 90 CRI version with good tint rather than a 4W, 80 CRI, green-tinted lamp.

[DudeMan]

@flashflood

Waveform Lighting makes several outstanding high-CRI (95+) bulbs and strip lights. I’m slowly replacing Soraa with these.

https://www.waveformlighting.com

tint looks nice. power wise, just going by appearance it looks like the 5W is using 6 elements.
which ones are you using? do they run hot?

@iamlucky13

Looking at the phosphor color, I couldn’t help but wonder about the color quality.

The box does say 80 CRI (mediocre, but not bad), but Clive noted:

the color i would say this is is a soft white biasing very slightly towards the green area of the spectrum which makes sense because the human eye has a peak sensitivity of around about 555 nanometers which is a sort of um aptly green color and they might be aiming for that uh just to improve the efficiency

I’m not surprised, but would rather Philips offer me a 5W or so, 90 CRI version with good tint rather than a 4W, 80 CRI, green-tinted lamp.

agree 100%. give us an efficent (more elements run at lower current) high CRI bulb and i’ll pay the extra they ‘lose’ by not making them self destruct.

[netprince]

I kinda want one

[Marc_E]

Cheers for the video, didn’t know about the Dubai project.

Just went to buy one of the Ultra Efficient bulbs out of curiosity but can’t see them in any of the places they’re meant to be for sale. (John Lewis, Argos and Amazon according to Philips).

And yes, the market definitely lacks a decent, readily available HCRI bulb but given the specific design remit it was never going to be this one Philips are innovative though so i’d like to know what they learnt in their quest to increase efficiency.

Edit: My mistake, they’re in stock at John Lewis so have just ordered the 3000K and 4000K 40W variants. (They’re not listed as ‘Ultra Efficient’ so it’s not obvious it’s these when searching.)

[Marc_E]

From the info on the box (which may not be entirely accurate as it gives the same lumen rating for both the 3000K and 4000K bulbs, but as it’s Philips i assume it’s ballpark for one of the colour temps) the 40W equivalent gives 485 lumens from 2.3W and the 60W equivalent gives 840 lumens from 4W.

This means both the 40W and 60W variants produce 210 lumens per watt, and as (going by the images) the 40W has 4 filaments compared to the 60W’s 8 filaments any improved efficiency in these bulbs is not down to the number of filaments.

[Hoop]

@flashflood

Waveform Lighting makes several outstanding high-CRI (95+) bulbs and strip lights. I’m slowly replacing Soraa with these.

https://www.waveformlighting.com

Unfortunately their dimmable bulbs which can be used in enclosed luminaires have somewhat high flicker. Their low flicker bulbs are not dimmable and not for enclosed fixtures.

In the bedrooms I’ve replaced my waveform bulbs with INCAN + dimmer knobs and it’s great.

[DudeMan]

@Marc E

Cheers for the video, didn’t know about the Dubai project.

Just went to buy one of the Ultra Efficient bulbs out of curiosity but can’t see them in any of the places they’re meant to be for sale. (John Lewis, Argos and Amazon according to Philips).

you are welcome. here is the Ultra efficent page on Phillips website
https://www.lighting.philips.com/main/prof/led-lamps-and-tubes/led-bulbs/ultraefficient-led-bulb

@Marc E

From the info on the box (which may not be entirely accurate as it gives the same lumen rating for both the 3000K and 4000K bulbs, but as it’s Philips i assume it’s ballpark for one of the colour temps) the 40W equivalent gives 485 lumens from 2.3W and the 60W equivalent gives 840 lumens from 4W.

This means both the 40W and 60W variants produce 210 lumens per watt, and as (going by the images) the 40W has 4 filaments compared to the 60W’s 8 filaments any improved efficiency in these bulbs is not down to the number of filaments.

you are right. i shouldn’t assume that all filaments are the same. i’m sure they have different amounts of emitters and characteristics.

@Hoop

@flashflood

Waveform Lighting makes several outstanding high-CRI (95+) bulbs and strip lights. I’m slowly replacing Soraa with these.

https://www.waveformlighting.com

Unfortunately their dimmable bulbs which can be used in enclosed luminaires have somewhat high flicker. Their low flicker bulbs are not dimmable and not for enclosed fixtures.

In the bedrooms I’ve replaced my waveform bulbs with INCAN + dimmer knobs and it’s great.

i’m going to try using a ‘capacative dropper’ (film capacitor in series) on some higher wattage LED bulbs to drop them down.
as for dimming, i have a fixture in my kitchen with 3 light sockets. using 1 incandescent bulb, i can use 2 ‘non-dimmable’ LED bulbs with a traditional dimmer. :sunglasses:

[flashflood]

I’ve been using the filament-style bulbs and haven’t had flicker at all. Is this only an issue with dimming?