Ultimate LED Bulbs - Ultra High CRI - The Honorable Quest

Also tested another Airam bulb. An adjustable CCT one with 2700K, 4000K and 6500K option. You switch between those by turning the light off and on within 4 seconds. Not high CRI but interesting none the less. The 4000K mixed tint seems usable and as expected has a negative duv.

Link to imgur album

Adam, if you could build some bulbs with the famous Nichia 219b r9080 LEDs I think you could easily sell hundreds just here on BLF.

Ou course I can, but…
Spectrum is not so good.
And I think that using ordinary leds - it is a crime!
I already use more better leds! SOLs and SAWs is much better than NICHIA

I use leds without 450nm (blue) peak, and without hollow in 480nm (turquoise), and with violet



It is not all. I know that there is so much flashlights based on NICHIA high CRI fake white leds.
But I built my own prototype of head flashlight based on COB sunlike (SAW) with 18 crystals.
Just yesterday I find some interesting things because violet spectrum.
I am sorry, it is really hard to me talking in english without fatal errors.
So, I finded another sing just yesterday, why using ordinary leds it - is a crime. In this situation it is using in lampposts and in car lights. First reason was blindness, because blue peak and turquoise hollow. Pupil (eyes) system failture with this.
What about violet spectrum? I thought that the reflective stripes on my son’s backpack were fake. But yesterday I noticed that they are still shining. Because we went to the store, and was with my sunlike flashlight. These stripes shone, even in very weak lateral light! The reason why I thought that this reflective stripes was fake - led light without violet spectrum! It was amazing! Just yesterday!
It is truth! here is his backpack

Some photos of prototype of my second head flashlight HERE
it is 35 volts COB LED…
My lampman’s helper will do board with microcontroller and with hight effective (~95%) ultra high frequency transformer led driver without any pulsations.

Independently from the high praises and results seen in flashlight with 219b, from preliminary tests shown by Adam and I hope confirmed in the near future by Maukka, SunLike LEDs from SSC seems better. Close to even "outstanding" at the moment.

That and Optisolis are curramently leading, from a light quality perspective. To be fair and complete I've not studied "batches stability" of those LEDs, as they are still not easy to source. That *could* be a drawback, but I've not yet seen anyone employing them complain, so.

Oh, I agree with you 100% about Nichia 219b not being the best and COBs being better. But that is totally not the opinion of the general population on BLF. Opinion here is that nothing trumps a 219b.

Tests and facts will be the bests arguments to demonstrate the leading edge of such LEDs. Records are made to be beaten.

For reference purposes I'd be happy to include 219b's measures in the topic opening table.

Many people wanting rosy tints for flashlights (although many don’t for ultimate sunlight/color accuracy) leads them to the 219B as it’s the only high CRI flashlight-sized emitter that offers it. Many here are aware the Optisolis, several brands of COBs and other products still blow them away in CRI/R9/R12/etc.

Problem is solved with tint mixing so kind of a moot point. Leave 219B behind already. There is plenty of space and diffusion in a lightbulb to not have to consider 219B, ever.

Alright, I’m good with that.

I can confirm the 1600 lumen Hyperikons fry themselves after a few months. I have heard the 800s do not but they should also be a lot less hot. You literally can’t touch them they are so hot.

Literally no one is selling better emitters in good lights, like the FF E07…we are stuck with 219b until China offers better in mass production…I would kill for Optisolis in my lights
Only thing that comes close to 219B SW45 in products you can actually obtain is the SST20 with its crappy 3800k greenish CCT.

That depends on the bin you get. Some manufacturers have been better then others green wise with better bins. The 4000K and 3500K 219B also biase pretty warm if I remember to. I’d kill for some E21A multi-emitter lights. Optisolis is pretty good, but it’s limited current wise, and the E21A has good tint and better CCT flexibility.

Anybody have any experience with Ketra’s A20 and PAR36 bulbs? They have a fully-adjustable CCT from 1400k to 10000k @ >90 CRI. CCT is maintained within one Macadam ellipse (centered on the black body locus?) as LEDs age using a control loop that monitors output.

High CRI RA95 E27 7W COB LED Bulb

I picked up 3 of the 5000K versions, really nice tint and color rendition.

I forgot to mention California’s title 24 lighting requirement makes finding cheap good lights easier. It requires min 80 r9 but the cheap ones like Phillips are usually max 3000k. Took like 2 years for that law to dent the scammy high cri market……of course lobbyists complained…

That’s strict. I like it :smiley:

I now have a table of light bulbs with the corresponding CRI Grade. I have a lot of data from my spectrometer, but so far the only LED technology to earn an A is the SunLike! Please note the bulbs with a * were not tested by me (like the SunLike).
Help me add to the table by sending me links to high CRI bulbs!

I discovered Sylvania A19 LED bulbs, 3000K. $1.50 at dollar store. They look great, no PWM, and not even warm to the touch.

They seem to have a CRI of 80 and nothing more published. That’s a bad sign.

I really want to make a batch of optisolis bulbs (spot type 45deg) for all around my house. 120VAC

What bulb can fit the nichia optisolis VS35SP36?

What is the general maximum wattage a standard bulb can withstand from LEDs also accounting for the driver?

The best case scenario is if the bulb already outputs at 1S or 3S which the VS35SP36 can change to. And then, I just pull out the original LEDs and place the mcpcb on top.

I have never modded a bulb before so I assume they glue them very well for safety. I don’t mind cutting and regluing or things similar to this.

Yea this seems like a good option to me too. But I haven’t sacrificed one of everything yet to find a good host.