Ultimate LED Bulbs - Ultra High CRI - The Honorable Quest

yes the blue zone is very small, with blue peak is mild at 23% only.

Talking about the blue peak, Luminus has brought a new 3030 led on the market that has the cyan gap filled up (or even made into a cyan peak) so that high CCT’s can be made with a lower blue peak. It is called Luminus “Salud”.

Not high CRI but here’s the Ikea Trådfri 1000 lm E27 smart bulb:
Imgur

Professional lightning Philips CRI97 spotlights, I have them here in my living room

Philips Master GU10 LED Spot 5.5W 375Lm WW dimmable

They got also CRI90 E27 lamps here
2700K
https://www.lighting.philips.de/prof/led-lampen-und-roehren/led-gluehlampen/corepro-ledbulb-gluehlampenform/929002069502_EU/product
2200K
https://www.lighting.philips.de/prof/led-lampen-und-roehren/led-gluehlampen/master-ledbulb-gluehlampenform/929002218602_EU/product
2700K filament
https://www.lighting.philips.de/prof/led-lampen-und-roehren/led-gluehlampen/led-lampen-mit-klassischem-gluehfaden/929002019002_EU/product

CRI90 E14
https://www.lighting.philips.de/prof/led-lampen-und-roehren/led-kerzen-und-tropfenlampen/classic-led-kerzen-und-tropfenlampen-klar/929002018002_EU/product

Philips claim 90CRI
https://www.lighting.philips.com/main/prof/led-lamps-and-tubes/led-bulbs/master-ledbulbs

And
https://www.airam.fi/en/product/v7640-2256/4711539/led-op-a60-10-5w-940-e27-cri90-bx/294/1

Livarno Lux bulbs from Lidl are advertised as high CRi (>95, sometimes 97 or even 100), they’re pretty cheap at 1,5-5€ each (depends on the country and model) and they come in various shapes, sockets (G10, E14, E27), from 250 to 806 lumens. Sources:

Germany

Poland

Spain

Ikea >> sub-90CRI seems not enough for our "Ulta High CRI" topic. But it's great that a "big name of house equipments" is putting CRI on its product. A good way to eduquate consumer in the long run. Do they offer better lines?

Philips >> GU10 CRI97 offering is great, for sure. Why don't they also make E27 bulbs out of it is a mystery. Maybe a double targetting bias, where GU10 is used to target shops/pro displays, whereas E27 is viewed as consumer only format, and consumer as deemed not interested in great CRI?

Airam >> Do you have tests or more detailled specs somewhere about this bulb?

LIDL >> claimed specs are interesting, but I can't help but being dubious about a CRI100 offering (who would/could be their manufacturer?). That is making me "scientifically doubt" about pretty much their other claims too, as a consequence. Other bias in my reasonments is that with those "white branded" products, the inside of the product could change with each production run. Any tests (and more precise references) somewhere ?

The "trick" with pretty much manufacturer claiming good/great CRI will fall under the CIE vs TM-30 measurements caveats. The common old CRI index is proven to be unfit to adequately qualify LEDs flux (too much pastel colors, not taking into account full spectrum, etc). That's why TM-30 is aiming to perfect that situation and that's why I've added from the start R9 (deep red), R12 (deep blue) and Rf (full spectrum) values.

A manufacturer can claim a great CRI value (so based only on R1-R8 values), but producing for instance "badish" results on R9 and R12. And as such giving a "meehish" render in our homes.

I've started to rebuild my table, with the BLF Bulb Quality factor™ proposal, you cand find it there.

Have to think a bit more about the proposal of Joshk for its scale.

IKEA Ledare, type LED1708R5.
A dimmable GU10 bulb that uses very warm leds at the lowest brightness setting and gets cooler tint at higher setting by gradually mixing in a cooler set of leds and switching off the warm set at the highest setting.

Lowest settings, just the warm leds:
CCT=2060, duv=+0.0012, CRI=93.6, R9=58, R12=98, Rf=93.2, Rg=96.8

An intermediate setting, some cooler light mixed in:
CCT=2450, duv=+0.0005, CRI=93.8, R9=60, R12=92, Rf=92.6, Rg=99.4

Highest settings, just the cooler set of leds, warm leds are off:
CCT=2640, duv=+0.0008, CRI=91.7, R9=54, R12=88, Rf=90.3, Rg=100.0

IKEA Ledare, type LED1521R6
A 2700K 90+CRI GU10 bulb, non-dimmable

CCT=2850, duv=+0.0014, CRI=91.9, R9=59, R12=83, Rf=91.0, Rg=99.9

too bad all IKEA above BBL

The newest insights are that (“western”?) people prefer the tint well under the BBL, which these bulbs are not, but they are only slightly above it, and I do not see an ugly tint.

Really quick post. First, thanks for all your new test additions guys.

Then, here is the updated table, with a first run at ordering it:

Since there are so many measurements being posted, I just want to remind everyone you should allow LED bulbs to warm up for a while before testing because Duv tends to drop significantly.

I so want to try some of these

Are there any good tube style replacements? I got a box of Hyperikon T8 bulbs that claim >= 90 CRI. They’re better than the fading florescents they replaced, but the PWM is noticeable sometimes.

Those look neat! I suppose flicker is obvious when used with a typical voltage chopping dimmer?

How long does one need to wait? Does this also apply to flashlights?

High output bulbs with mediocre cooling tend to heat up to 70-100°C within an hour. Since home lighting is used for prolonged periods, I would usually wait at least 15-30 minutes before taking the measurements. Similar shift in tint goes for flashlights too, but they’re mostly used in shorter bursts and as such with less heat generated at the emitter.

I use it with an IKEA fixture that may be especially made for this led, so I’m not sure if it is a normal voltage dimmer. But the dimming is certainly not up to BLF-standards :nerd_face: , not very smooth and at certain postions the cooler leds keep switching on and off (may I introduce “tint flicker” ? :party: )

Anyone tested this one (2200-4000K smart bulb):

For some reason Ikea doesn’t state CRI for that particular model.