Sunlikelamp.com SunLike10xss SOL Ultra High CRI E27 LED bulb (2700/3200/5000/5600K)

Great, thank you.

Hello!

The image says it all. SunLike, could you please edit your #6 post here and add some spaces to the text chain? Thanks.

I've reported it to sb56637 to see if some improvement can be made to the forum engine, the above problem also occurs with unnecessarily bloated url links in the simple post editor, I think.

Modes go to ∞

I tested how the diffuser effects the light. It’s very neutral and doesn’t result in any meaningful difference. The small change in tint is probably not even visible. It absorbs 8% of the light, which is also likely not visible. Measurements were done integrated after about 30 minutes of warming up.

Great job!!

I see the COB leds can be directly thermal glued to a heatsink and connected, no need for a board.

However, is there any datasheet available somewhere for them?

That COB features 10S arrangement, seems clear (?). So, 2P emitters would work nicely with long lifespan with a single standard ≈300 mA driver.

How about the other COBs?

I knew there was some capacitor swaps and stuff on the driver, but holy hell. I just skimmed through the 1.3 hour video of you doing ONE bulb. You are a madman. I don’t think I want to learn all that to save 28%. I’ll just settle for affording fewer bulbs.

:smiley:

Call me mad Adam =)

15-20 hours and 3 days to draw THIS W5W

+split project to 6 pcb boards and convert it to the gerber format

  • stencil
  • postage and etc

yes, I am some kind of crazy

also I have another projects:
“free home in dome”,
industrial leophilizer with small size,
carbon blimp

Another thought:
I really like that bulbs. I would like to stock them up for various uses. But for quite a few uses they would be better if they focused on efficiency more than CRI…
F.e I just did a quick look at datasheets of CRI97 Bridgelux COBs (BXRE-40H6500-D-73 just to have a reference point). I have no idea if that’s the best out there, it may be but it’s literally the first that I checked. It can do 124 lm/W at 50W and about 150 lm/W at 24W. That’s way more than SAWS1566A which does 93 lm/W at 50W…and for me it would be way better in many uses.

there is one think about lumen per watt.

it is bullshit!

For example, I bought led lamps GX53 with aluminium body do to it with SunLike leds.

MORE PHOTOS

It was about 8w. There was about 70-80CRI 4000k.
I compare it with upgraded to SunLike 6w.

Almost twise (~1.8 time) more lux. But! But body was much more hot than 6w with SunLike. It mean, that real effectivity was the same.

It is not corect to compare lux\lumen, because it is brightnest for eyes, not real efficiency.

In another leds there is no violet spectrum. But it is really important, but for luxmeter it is not so much value.

Also there is 123lm per 1w in new smd 3030 6v SunLike, but it is with pure power to led.

3030 0.2w Samsung 301b have 230lm per 1w, but their spectrum will kill your eyes.

Also it easy to do it more brightnest and effective - add leds with the same power of the bulb.

I see. You’re not interested. I still am.
No, CRI70 doesn’t kill my eyes. I’m not sure if the flashlight I received recently even gets 70. Yes, I would like it to be better but no, I wouldn’t be happy to halve the output for the sake of superb spectrum.

It all depends on use.
In bathroom / kitchen I’d like the highest CRI I could get.
In most other rooms CRI97 is good enough even with dips in the spectrum. In general I would prefer more but now price becomes an important factor.
In more portable cases (desk lamp f.e.) wattage becomes a limit. Get a bit worse spectrum for 50% higher peak output?….for most uses even SOL would be powerful enough but I would be happy to support the rare cases when I want to use the lamp as a moving head. :smiling_imp:

Blue peak and turquoise cavity kill your eyes.

CRI is also bullshit! Because final value calculated only from 8 indexes. R9 not in the final value. R9 - it is tits of your wife/girl, I mean skin color and sexual.

I have head flashlight with SunLike COB. I will never use another!

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With ordinary LEDs (without violet spectrum) retroreflective elements do not work!

With SunLike they shine! It is not safe use light without violet spectrum on the road! It is a crime!

I’m not a fan of CRI metric either. I wish that there was a commonly used alternative that was better. The alternatives hardly see any use…but it doesn’t matter for the sake of this discussion.

You found a case where high CRI lights of typical construction are clearly distinguishable from sunlight.
That’s interesting.
But that’s not something I deal will all day long either. And so this may be a factor in making a decision - but definitely not a very important one.

If for a couple of bucks more I can get 50% more light in my laundry room - that’s a big deal.
Your bulbs are not cheap. I find it fair, I am prepared to pay for quality. But if I can keep electrical quality and get 40% more lm/$ for my shed or laundry room - is seems like a worthwhile deal.

I agree it’s unpleasant. But the evidence seems conflicted. There are even “Therapy Lights” that feature a blue peak to treat Seasonal Affective Disorder.

Hey SunLike, what driver is this?

Luminous efficacy/efficiency, as a metric, is hardly of help for high colour accuracy led emitters. High colour accuracy emitters must emit specific spectral power distributions whose “efficiency” will always be lower than crap CRI/colour accuracy ones, no need to be a genius to understand this. If you want maximum efficiency grab a monochromatic 540 nm source and that will net 683 lm/W, or a 507 nm one for 1699.5 lm/W according to the Wikipedia article figures. Hope you like the corresponding colour accuracy to your eyes/mind.

High “efficiency” and high colour accuracy cannot be in the same sentence unless we change some definitions and/or humanity gets a massive mental reprogramming in this particular respect (there are far more pressing matters).

Some custom boost driver, that's for sure.

scientific publication (use translator) LINK

With not an ought turquoise spectrum, pupil diaphragm malfunctioning, because brightness is defined by the eye as the brightness of a turquoise spectrum

Jerommel I left a link. There is photos of original driver too. It is Qihan DC GU5.3

YES!

about led driver for head flashlight. Custom boost driver with micro-controller will created by lampman’s helper. It is really difficult to do it in real. He will sell it for 30-50$ per 1 pcs. It will be about 95% effective.