I’m very new to lighting, so please bear with me here.
Thanks to all the reviews on this website, I’ve learned that Waveform and sunlikelamp.com have some of the best lamps, in that they correlate very well with black-body SPD.
I have some questions about the sunlikelamp products though:
What’s the longevity of the lamps? I assume LEDs from bigger companies like Waveform can last > 10 years. And even if the sunlike lamp “works” for 20 years, will the SPD/CCT change over time as it deteriorates?
I read stuff about Starlike. What is the difference between Starlike and Sunlike? Doesn’t Sunlike already have really good duv? And if Starlike is actually much better, when will it be released?
I see some products on sunlikelamp.com with acronyms “AD” or “LD”. What do these mean? For example, SunLike50AD LED lamp or SunLike48-54LD. 48-54 ватт
1) The #1 thing that kills LEDs is heat. The Sunlike bulbs are made with some serious heatsinks, and he tends to err on the side of overkill without a doubt. To the extent that the issue is less about their longevity, but rather whether the extra size can still work for your application. You’ll also notice that he posts very openly about the vetting he’s done on the electronics, and he’s gone through his fair share of junk suppliers to find the parts that he can be proud of. Frankly I think he can be a bit crass and overt, but he’s competent and consistent, and he backs up his big mouth with a product that outperforms anything else I can find or could even make myself. And BELIVE me, I’ve searched high and low. Once @maukka reviews the new stock of 2835 sunlight smd’s, I’ll be placing a very large order for a number of home lighting projects.
2) I’ve been on @Sunlike about this, since he’s started teasing them. A week or two ago, he stated that the efficiency was still too low to bring it to market, and it would likely be several months before we’ll see it.
3) I remember seeing something about D meaning Dimming, but not sure about the A/L.
Regarding heatsink, does that just extend longevity of the light-emitting source itself? What about the phosphor coating on the bulb that I’ve read is used for absorbing and re-emitting light? My logic is as follows: if the coating deteriorates, then the SPD may change. Does large heatsink protect against coating deterioration?
Regarding 2835 sunlight smd, are those from the SOL Chinese company that SunLike mentions? What’s the SMD currently used in the existing SunLike9x series then?
Good heat sinking results in lower max temperature during operation, as it give the heat somewhere else to go so it doesn’t continue to collect/increase directly on the diode. Heat is what causes the coating to deteriorate, so the more effective the heatsink, the more you slow the deterioration of the LED.
As for the SPD, yes that is affected through this processes, but the tests that I’ve seen that show a given LED’s measurements when brand new vs well aged, the efficiency and thus total output is affected to a far greater extent than the SPD.
1. You can find article here — https://sundaylamp.com (use translator)
20-35 years (4 hours per day) must works good and with spectrum too, because there is big aluminium heat sink and leds works with middle power (without overloading)
2. Difference between StarLike and SunLike it is SPECTRUM:
StarLike:
SunLike:
BUT
StarLike have low efficiency (lumen per watt), it is about 50% from SunLike, so bulbs with it will be expensive and not so bright
D — dimmable (power can be 5-100% by switch), all my bulbs and lamops 12+ watt
A — active (with active cooling, 40mm fan)
L — Long, line. 20-100cm lamps
about smd 2835 from who produce SOL (Smart Eco Lighting co. ltd. super. puper. extralux., yes, some looong name)
Parcel with 20000pcs (all CCTs) of this LEDs already in the my City, I just try to find 400$ cash to pay to delivery service from China for shipping (about 70-80kg of parts)
So, you will see test from Maukka after 2 weeks
I asked about StarLike, they have only warm color now, it is 0.2w smd 2835. I waiting for 5000k and 6000k (cold), but their production department busy for some huge order of another leds =(
It will be not so easy to use it, I have pcb only for 60pcs leds 2835, it is for 0.5w 2835 SOL
Indeed, I have seen that there are likely benefits to eye/skin health from high-wavelength red spectrum as well.
Clearly natural selection / evolution means humans are best-adapted to live with the sun, so replicating it very well indoors likely brings benefit when used in moderation.
I haven’t found anybody else taking lamp-making as seriously as you have. Keep on!
Of course Yes! Phosphor degrades from the load and temperature conditions. It needs cooling too. Moreover, it is more sensitive to temperature than led’s crystals.
In SunLike9x (eXperimental) only smd 3030 6v SunLike from SeoulSemiconductor with TRI-R (3-R — all crystals are violet) for now. Sonn it will be available with SOL 2835 too
