Old news for potheads ...

stardustsailor

stardustsailor

Well-Known Member
alesh said:
What about good ol' 3000K min 90CRI which seems to be plenty efficient in CXB3590?

630nm peak
48% red (14% of which is 700+nm)
36% green
16% blue
efficiency basically the same as 3500K/80CRI CD.
View attachment 3586492
Click to expand...

Seems really a very good option ...
3000°K 90Ra ...
Hm..
Surely it wortrhs some testing ...
Especially when those COBs have such a good efficiency ,by now ...

Great idea ,alesh ...
 
BuddyColas

BuddyColas

Well-Known Member
alesh said:
What about good ol' 3000K min 90CRI which seems to be plenty efficient in CXB3590?

630nm peak
48% red (14% of which is 700+nm)
36% green
16% blue
efficiency basically the same as 3500K/80CRI CD.
View attachment 3586492
Click to expand...
So sitting on the sidelines, what I’m taking from this is the CXB3590 3K in 90CRI comes as close to matching the McCree curve for a single chip as anything out there. So if you were starting a new build (for flowering coverage) to use from seed-to-weed, what kind of DLI would you be shooting for? I mean from your experience the “sweet spot”…to be productive but not wasteful.

*EDIT: Let me put it a different way. How many PAR watts/foot would you suggest?
 
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FranJan

FranJan

Well-Known Member
stardustsailor said:
I think it was brother @FranJan who mentioned them first ...
Sharp Zenigata ,Tiger series ....
2700°K 93Ra + 5700°K 87Ra in one COB ,two channels......................................*** They are ceramic cased ,so they need holders,also ....
Click to expand...
COBs are dead to me ;). CSP LED arrays nowadays kiddies. Actually they probably aren't ready just yet, Samsung hit 130lm/watts a few months ago and CSP based array's efficacy increases and releases are much faster than COBs. Ultimately, according to the so-called experts, they are supposed to be more efficient than COBs though CREE fucking hates them and who knows what CREE has coming out from that lab of theirs, though I think it's tick-tock time for COBs....... any second now.

http://cobledarray.buy.splicd.com/pz682dcb2-high-efficiency-300w-led-lighting-engine-8000k-multi-chip-csp-led-module.html
 
welight

welight

Well-Known Member
CREE fucking hates them and who knows what CREE has coming out from that lab of theirs, though I think it's tick-tock time for COBs....... any second now."

dude Cree doesn't hate them they just don't understand the fuss, they were making CSP before it was cool
Cheers
Mark
 
stardustsailor

stardustsailor

Well-Known Member
FranJan said:
COBs are dead to me ;). CSP LED arrays nowadays kiddies. Actually they probably aren't ready just yet, Samsung hit 130lm/watts a few months ago and CSP based array's efficacy increases and releases are much faster than COBs. Ultimately, according to the so-called experts, they are supposed to be more efficient than COBs though CREE fucking hates them and who knows what CREE has coming out from that lab of theirs, though I think it's tick-tock time for COBs....... any second now.

http://cobledarray.buy.splicd.com/pz682dcb2-high-efficiency-300w-led-lighting-engine-8000k-multi-chip-csp-led-module.html
Click to expand...
FranJan said:
Click to expand...

Brother Fran I really like Chip Scale Package LEDs myself ,too ...

Although I do have some second thoughts about 'em ..have to admit that ..

One of them is the small sized LEs as you 've mentioned already .
From my point of view I do not actually see it as an " advantage " ..
On the contrary .LES plays an important role as a ...hm.. Heat Convecting Surface ..
A large LES -especially in a 300W CSP / COB - convects a quite good amount of heat generated ...
Basically ..That it's ...
Other than that ,it seems that some CSPs are offering ,the so wanted by me at least, " diversity "
in light quality ...

Question : Any links for the CSP LED shown at your latter pic ?
Seems like a combo of 630 nm Red ,4000/ 5000 K and 2700 K ,or am I so mistaken ?

Cheers.
:peace:
 
Queece

Queece

Well-Known Member
Yo stardust, have you seen these: http://ce.citizen.co.jp/lighting_led/dl_data/datasheet/en/vivid/CLU044-1212B8_P3073_0415.pdf

Just copped a couple in the 36v light-pink option and am going to throw them in series with 2 cxb3070 6000k @ 1400mA. I haven't seen anyone using Citizens here, but the new vivid series is color adjusted further, so I figure go with 1:3 ratio with a zero phosphor COB to correct the spectrum with enough red to open up your stomates and then mostly high efficiency blue to hammer in photons. Just throwing it out there. I got cdiweb to bring in an order of the pink ones and they're still available now if anyone wants to give them a shot. $16.50 shipped I payed for them per chip, I think it's worth taking the piss.
 

Attachments

FranJan

FranJan

Well-Known Member
welight said:
dude Cree doesn't hate them they just don't understand the fuss, they were making CSP before it was cool
Cheers
Mark
Click to expand...
CREE doesn't like them because it adds an extra step or 2 to their end of production, and that's what they've been saying about them since day 1. I don't like CSP because they are not as easy to DIY them at this time but we'll see. And what CSP stuff do they/did they offer through retail????
stardustsailor said:
Brother Fran I really like Chip Scale Package LEDs myself ,too ...

Although I do have some second thoughts about 'em ..have to admit that ..

One of them is the small sized LEs as you 've mentioned already .
From my point of view I do not actually see it as an " advantage " ..
On the contrary .LES plays an important role as a ...hm.. Heat Convecting Surface ..
A large LES -especially in a 300W CSP / COB - convects a quite good amount of heat generated ...
Basically ..That it's ...
Other than that ,it seems that some CSPs are offering ,the so wanted by me at least, " diversity "
in light quality ...

Question : Any links for the CSP LED shown at your latter pic ?
Seems like a combo of 630 nm Red ,4000/ 5000 K and 2700 K ,or am I so mistaken ?

Cheers.
:peace:
Click to expand...
Don't think that's a CSP but the Koreans are putting out a lot of wild shit that looks great to veg with.
http://cobledarray.buy.splicd.com/pz6982068-150watt-cob-led-array-multi-color-dimming-fresnel-light-leds.html

WTF is up with that blue one? And here's a 380nm UV COB.



http://cobledarray.buy.splicd.com/iz6bc834c-100w-cob-uv-led-diode-380nm-for-sterilization-water-purification-images.html
 
welight

welight

Well-Known Member
FranJan said:
CREE doesn't like them because it adds an extra step or 2 to their end of production, and that's what they've been saying about them since day 1. I don't like CSP because they are not as easy to DIY them at this time but we'll see. And what CSP stuff do they/did they offer through retail????
Click to expand...
the term refers to the type of chip, what your showing here is arrays of CSP, Cree XQE for example is a CSP
 
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