COB Manufacturers other than CREE or BRIDGELUX
- Thread starter qwerkus
- Start date
welight
Well-Known Member
Ok got it, yes be nice, pity I dont have one , if some does be very interesting
Cheers
Mark
BOBBY_G
Well-Known Member
oh i forgot i have a 185c-1400 CC that would work for the 135W
welight
Well-Known Member
happy to flip you one gratis if your happy to do a review here and have enough gear to put it through its paces?, Dont care if its good or bad, prefer an honest unbiased view as I dont want to waste anyones time on a product that does not exceed expectations, especially mine
Cheers
Mark
ttystikk
Well-Known Member
I'd offer to be a tester myself but I'm not as much of a COB guru as a lot of the guys here.
You want to do some testing on a commercial scale, I'm your man. Why? Because I build modules- of everything. Everything I do scales predictably and therefore can be reliably used to extrapolate to large areas.
BOBBY_G
Well-Known Member
sure i will try to do a ppfd/W curve over a current range side by side vs a 3590 or two. similar to supra's top bin graph which i found very informative. a holder for it would be cool (if they exist) so i dont have to solder to chip. if not no biggie. ill email you.
nevergoodenuf
Well-Known Member
CDIweb now has a LED lighting website now -https://led.cdiweb.com/Home/2. I have asked for different info than lumens for a couple of the Citizens. Please tell me what you think? Is there any other info I should asks for? I think there will be tool for this in the future? I am still trying for a discount code, but they haven't officially announced this site.
nevergoodenuf
Well-Known Member
Ok, I was just told that this ^ data is at 85c, not at 25c.
Could this explain why I didn't see as much difference between 90+cri and 80cri?
Could this explain why I didn't see as much difference between 90+cri and 80cri?
nevergoodenuf
Well-Known Member
@Greengenes707 , @SupraSPL , @Rahz ,@Growmau5 and anyone else.
Is this info useful if it is on the website? Could/should this be made into a tool? If not what would be more useful than lumens per watts? I now want to do a better test between the high cri and 80cri.
Is this info useful if it is on the website? Could/should this be made into a tool? If not what would be more useful than lumens per watts? I now want to do a better test between the high cri and 80cri.
Rahz
Well-Known Member
Absolute values for various Kelvin temps courtesy of Mr. Flux. There's more 660-680nm but total photon output is a good bit lower. I don't see the high CRI as the better option, but some testing would be nice.
nevergoodenuf
Well-Known Member
I know, it is just I didn't see any difference between a 3000K/4000K 80cri and a 2700K 90+cri. I am not saying the green range isn't needed, far from it. I have been down that road. I am just saying I will separate the 2 better and get a true side by side.
nevergoodenuf
Well-Known Member
I only have the 2700K high cri, but I will put it against the new Luna 300 3000K 70cri. Now that is a shootout. I hope I don't screw this up.
Rahz
Well-Known Member
Equal PPF would be one way of testing. There could be discrepancies in the datasheets from brand to brand so a PAR meter looking for similar readings on center and off center along with some variable dimming capability could be used to get the output pretty close. This would be along the lines of analyzing the efficacy of a particular spectrum and might favor a lower K.
Another way would be to use top bins from the same manufacturer and run them at the same wattage. This would add electrical efficiency into the mix and might favor a higher K.
Another way would be to use top bins from the same manufacturer and run them at the same wattage. This would add electrical efficiency into the mix and might favor a higher K.
qwerkus
Well-Known Member
Have you seen the update on citizen cobs ? Now version 5: http://ce.citizen.co.jp/productse/info.php?no=107
Not much of a revolution in terms of watt-to-luminosity, but nice decrease in thermal resistance. That's truely where citizen shines: they are easy to cool. My clu-046, now running for 5months straight is constantly 4-50°C cooler than my cxb3070, albight running at 4W more. If only the chips were easier to source....
Not much of a revolution in terms of watt-to-luminosity, but nice decrease in thermal resistance. That's truely where citizen shines: they are easy to cool. My clu-046, now running for 5months straight is constantly 4-50°C cooler than my cxb3070, albight running at 4W more. If only the chips were easier to source....
ttystikk
Well-Known Member
4-50C is a BIG range. Can you narrow it down a little?
Believe me when I tell you that my CXB3590 chips are running cooler than yours.
medicinehuman
Well-Known Member
mine are too