Release of LUXEON 3535L HE Plus (Square LES) ?

freemanjack

freemanjack

Well-Known Member
Uncle Reefer said:
I take it back, I just looked up the efficiency again. I thought I found numbers at 300ish Lm/w but I am mistaken. I couldn't find that page again. THese Luxeons are right in the ballpark of the new data I found. Again I am not good at reading spec sheets so please forgive me
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FYI 300lm/w is reckoned to be the theoretical total conversion lm/w, this will never be possible with LES/LED tech because a certain amount of photons emitted will be emitted into the substrate and be re-emitted as heat, I suspect we are near the physical maximum @ 200lm/w. So are likely to see unification first (all spectra @ 200lm/w) then massive price reducions per unit as development will switch from performance to cost.
 
grisbi

grisbi

Well-Known Member
freemanjack said:
FYI 300lm/w is reckoned to be the theoretical total conversion lm/w, this will never be possible with LES/LED tech because a certain amount of photons emitted will be emitted into the substrate and be re-emitted as heat, I suspect we are near the physical maximum @ 200lm/w. So are likely to see unification first (all spectra @ 200lm/w) then massive price reducions per unit as development will switch from performance to cost.
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hohoho, you learned me something today @freemanjack , thank you!

im still waiting for philipps's answer for the release of theire 3535,
cutter says me they need few more day,must do a preliminary mech design to prove the concept .
have to take my patience!
didnt find any other suplier with the NICHIA NF2L757G-F1 (we will call them by their name "optisolis") , if someone has it, pliz tell me
 
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welight

welight

Well-Known Member
freemanjack said:
FYI 300lm/w is reckoned to be the theoretical total conversion lm/w, this will never be possible with LES/LED tech because a certain amount of photons emitted will be emitted into the substrate and be re-emitted as heat, I suspect we are near the physical maximum @ 200lm/w. So are likely to see unification first (all spectra @ 200lm/w) then massive price reducions per unit as development will switch from performance to cost.
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A little old but proves the possibilities
http://www.cree.com/news-media/news/article/cree-first-to-break-300-lumens-per-watt-barrier

Cheers
Mark
 
freemanjack

freemanjack

Well-Known Member
welight said:
A little old but proves the possibilities
http://www.cree.com/news-media/news/article/cree-first-to-break-300-lumens-per-watt-barrier

Cheers
Mark
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I stand (partially) corrected;
**luminous efficacy which can theoretically be achieved at 555 nm is, altogether, 683 lm/W. In this context the expert refers to the »photometric radiation equivalent Km«. However, in practice this value cannot be reached, since, if this were so, it would mean that 1 W of physical radiant power can be converted loss-free into visible light.
Of course, monochromatic green light is not suitable for most lighting purposes even it were the most efficient. The planner likes to use white light with different colour temperatures and optimal colour rendering quality. But simply »filling« the spectral distribution with further wavelengths in the visible field (380–780 nm) will lead to a drop in the theoretical maximum luminous efficacy.

Consequently, there is no single numerical value for the maximum luminous efficacy of white LEDs. The maximum luminous efficacy depends on the spectral distribution.**
https://www.dial.de/en/blog/article/efficiency-of-ledsthe-highest-luminous-efficacy-of-a-white-led/
 
grisbi

grisbi

Well-Known Member
freemanjack said:
I stand (partially) corrected;
**luminous efficacy which can theoretically be achieved at 555 nm is, altogether, 683 lm/W. In this context the expert refers to the »photometric radiation equivalent Km«. However, in practice this value cannot be reached, since, if this were so, it would mean that 1 W of physical radiant power can be converted loss-free into visible light.
Of course, monochromatic green light is not suitable for most lighting purposes even it were the most efficient. The planner likes to use white light with different colour temperatures and optimal colour rendering quality. But simply »filling« the spectral distribution with further wavelengths in the visible field (380–780 nm) will lead to a drop in the theoretical maximum luminous efficacy.

Consequently, there is no single numerical value for the maximum luminous efficacy of white LEDs. The maximum luminous efficacy depends on the spectral distribution.**
https://www.dial.de/en/blog/article/efficiency-of-ledsthe-highest-luminous-efficacy-of-a-white-led/
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thank you for the lesson, i learned a lot ^^
 
grisbi

grisbi

Well-Known Member
look @freemanjack ,
this is the jpeg mark from cutter just sent me
this is the spectrum of the new 5000k 97cri from nichia 757 about 140-150lm/w (you cannot make a spectrum like that at 200+Lm/W)
and if its real...its the most beautifull spectre i've never seen :shock:, theire is everyything on it!!

NICHIA NF2W757G-V2F1 5000k 97cri

and their a jpeg from your link to compare with other spectrum


im gonna make stripes with nichia 5000k 97cri + creexd16 3500k , gonna be a massiv complement to my nichia "2700k + 660nm" strips, and could go veg + flower!
what do you think lady and gentleman?
cheers!
 
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jonsnow399

jonsnow399

Well-Known Member
grisbi said:
look @freemanjack ,
this is the jpeg mark from cutter just sent me
this is the spectrum of the new 5000k 97cri from nichia 757 about 140-150lm/w (you cannot make a spectrum like that at 200+Lm/W)
and if its real...its the most beautifull spectre i've never seen :shock:, theire is everyything on it!!

NICHIA NF2W757G-V2F1 5000k 97cri

and their a jpeg from your link to compare with other spectrum


im gonna make stripes with nichia 5000k 97cri + creexd16 3500k , gonna be a massiv complement to my nichia "2700k + 660nm" strips, and could go veg + flower!
what do you think lady and gentleman?
cheers!
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Dunno, you'll have to grow with them to see if the "most beautifull spectre" actually grows any better than QB's
 
grisbi

grisbi

Well-Known Member
tomate said:
And that's 2.5 - 2.68 µmol/J which is good but not as good as the best 80 CRI chips like the LM561C is.
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The Highest cri is , less lm/w your are going to make. Cant wait to have more data to work with
plenty of report say even lower lm/w you have with high cree, plant seem make a better use of high cree light
 
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grisbi

grisbi

Well-Known Member
First answer from Mouser about the luxeon 3535l he plus squareLES:


"Thank you for the opportunity to quote on your current requirements. Unfortunately, we are unable to bid on the items requested. We look forward to assisting you with future inquiries."

:wall:

no regret on going for the nichia.
its gonna take time before see those luxeon i think
 
grisbi

grisbi

Well-Known Member
Mangul said:
Where did you order your Nichia Strips from? Are you in the States?
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from cutter, im working with them to make next gen horticulture led strip ;)
very hard to find, even on alibaba they cannot provide you or its expensiv or they juste have the 3000/5000k version.
im from europe dude!
 
grisbi

grisbi

Well-Known Member
tomate said:
And that's 2.5 - 2.68 µmol/J which is good but not as good as the best 80 CRI chips like the LM561C is.
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hello @tomate , what height do you have this ppfd? source? im really interessed about data on the new nichia :)
i asked mark to get ppfd data all every model of nichia and cree xd16 he has, wait& see,
only stuff we have for moment, is that we see on cutter.au from the nichia 757 led strip@2000k :

PPFD Data for 2000 Kelvin @nichia based on 12 inches
link:
https://www.cutter.com.au/proddetail.php?prod=cut3318

cheers
 
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Randomblame

Randomblame

Well-Known Member
grisbi said:
hello @tomate , what height do you have this ppfd? source? im really interessed about data on the new nichia :)
i asked mark to get ppfd data all every model of nichia and cree xd16 he has, wait& see,
only stuff we have for moment, is that we see on cutter.au from the nichia 757 led strip@2000k :

PPFD Data for 2000 Kelvin @nichia based on 12 inches
link:
https://www.cutter.com.au/proddetail.php?prod=cut3318

cheers
Click to expand...

Definately a nice strip and already on my watchlist since a few weeks.
One of these strips at 560mA(24,1w) is comparable efficient as two F-strips at 525mA(12w), 187lm/w, but the red weighted 2000°k spectrum of the 757 is a good flower boost IMO. For vegging one would probably need a few 5000°k strips in between but they would be a great replacement for my CRI90 COB's, which I currently use as a flower boost.
If they would only offer free shipping over $100 like digikey, I would have already ordered some strips, lol. @welight
 
justsmokedope

justsmokedope

Well-Known Member
interesting these are £0.11 each could be usable i wonder how many you would need to match or better reds etc i also wonder if adding a few 625nm reds would add a jump in the red peaks with photomofic effect
 
Rocket Soul

Rocket Soul

Well-Known Member
grisbi said:
hello @tomate , what height do you have this ppfd? source? im really interessed about data on the new nichia :)
i asked mark to get ppfd data all every model of nichia and cree xd16 he has, wait& see,
only stuff we have for moment, is that we see on cutter.au from the nichia 757 led strip@2000k :

PPFD Data for 2000 Kelvin @nichia based on 12 inches
link:
https://www.cutter.com.au/proddetail.php?prod=cut3318

cheers
Click to expand...
@welight those numbers on the 2000K nichia, what drive current are they based on? Nice work on the strips
 
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