Marine land LED lighting.. here comes the start of the LED age!

bill109

bill109

Active Member
here is an article to it..
http://reef-daily.com/?p=344
not alot of companies make leds fixtures from what iknow.. but it was kinda interesting. a company that has been kind of over looked making LED fixtures
i saw it in a magazine i get and it was in the front page cover.. im not sure if it is headed more towards being energy efficient or towards reef. it seems more toward saving you money.. but who knows the the future brings..
i thought it was cool and would share
-bill
 
bill109

bill109

Active Member
Originally Posted by WangoTango
http:///forum/post/3193687
The LEDs are only 1W?...
-Justin
from what i read.. yes.
we are looking for PAR here not so much wattage. in the reef world, PAR is what your after not so much watts. i think it helps to a certain extent to have a higher amount of watts but its not all about just watts per gallon say..
-bill
 
socalnano24

socalnano24

Active Member
Originally Posted by bill109
http:///forum/post/3194727
from what i read.. yes.
we are looking for PAR here not so much wattage. in the reef world, PAR is what your after not so much watts. i think it helps to a certain extent to have a higher amount of watts but its not all about just watts per gallon say..
-bill
I didn't get into PARs, but apparantley Lumen's is the official term that is being used to compare different watt output systems. This is what I could find in a quick search
" To clarify the relationship of watts to light output and LED
bulbs, we talk about the number of ‘lumens per watt’ (lm/w)
that the device produces. Incandescent bulbs are very
inefficient and only generate around 12 lm/w, whereas LEDs
and halogen sources now have almost equivalent efficiencies
of 40 lm/w. Some fluorescent tubes generate 60 lm/w (which
is where LEDs are predicted to be next year!) It is always
better to talk about lumens (and lux required) than watts when
it comes to lighting decisions."
I found that on brillianz.co.uk (not a competitor site, just info!)
FYI lux is lumens per square meter. So it accounts for area the light is spread over. Now I wanna know what our typical PC lights and T5 and MH lights produce in lumens/watts on average anybody know?
 
tygoef

tygoef

New Member
Originally Posted by SocalNano24
http:///forum/post/3194747
I didn't get into PARs, but apparantley Lumen's is the official term that is being used to compare different watt output systems. This is what I could find in a quick search
" To clarify the relationship of watts to light output and LED
bulbs, we talk about the number of ‘lumens per watt’ (lm/w)
that the device produces. Incandescent bulbs are very
inefficient and only generate around 12 lm/w, whereas LEDs
and halogen sources now have almost equivalent efficiencies
of 40 lm/w. Some fluorescent tubes generate 60 lm/w (which
is where LEDs are predicted to be next year!) It is always
better to talk about lumens (and lux required) than watts when
it comes to lighting decisions."
I found that on brillianz.co.uk (not a competitor site, just info!)
FYI lux is lumens per square meter. So it accounts for area the light is spread over. Now I wanna know what our typical PC lights and T5 and MH lights produce in lumens/watts on average anybody know?
I believe I read somewhere that lumens is measured at a specific light temperature, so lumens isn't a good measure either. I'll look for it and get back.
 
tygoef

tygoef

New Member
Here we have it, lumens is measured at the spectral response curve of the average human eye which is different than that of photosynthetic cells, so photometric measures, of which lumens is one, is of little value to reef keepers.
http://www.personal.psu.edu/faculty/...lideLamps1.htm
Most of the lighting industry’s customers use lamps for satisfying human visual needs for illumination. Thus, most of the easily available lamp data is in photometric units. Photometry refers to the measurement of visible radiation (light) with a sensor having a spectral response curve equal to that of the average human eye. The human eye responds differently to light of different colors and has a maximum sensitivity to green and yellow. The spectral response curve of a typical human eye is called the CIE Standard Observer Curve. The response of the human eye is very different from that of photosynthetic cells. Hence, from the point of view of a reef aquarium, where light primarily serves the photsynthetic needs of the corals, the photometric measures are not of much practical use.
For completeness and because most available lighting data is supplied for illumination purposes, the photometric terms are also defined here. Luminous flux is the amount of radiation coming from a source per unit time, evaluated in terms of a standardized visual response (units: lumen). Illuminance is the density of luminous flux incident at a point on the surface (unit: lux = 1 lumen/m2). Converting between photometric units and photon units requires that we know the spectral distribution of the radiation source, just as we saw earlier for converting between radiometric units and photon units.
 
wangotango

wangotango

Active Member
Originally Posted by bill109
http:///forum/post/3194727
from what i read.. yes.
we are looking for PAR here not so much wattage. in the reef world, PAR is what your after not so much watts. i think it helps to a certain extent to have a higher amount of watts but its not all about just watts per gallon say..
-bill
I understand perfectly the whole PAR/watts thing. If you look at the LEDs that are being used to actually keep coral alive, none of them are 1W. They just don't produce enough usable light.
3W Cree XR-E then that's a different story.
Justin
 
Y

yoshii

Guest
I saw this in a magazine too, I was like, why would that be good reef lighting? It would have to have alot of those small LEDs! I think it was like 5k
 
fishhunter

fishhunter

Member
Originally Posted by SocalNano24
http:///forum/post/3194747
I didn't get into PARs, but apparantley Lumen's is the official term that is being used to compare different watt output systems. This is what I could find in a quick search
" To clarify the relationship of watts to light output and LED
bulbs, we talk about the number of ‘lumens per watt’ (lm/w)
that the device produces. Incandescent bulbs are very
inefficient and only generate around 12 lm/w, whereas LEDs
and halogen sources now have almost equivalent efficiencies
of 40 lm/w. Some fluorescent tubes generate 60 lm/w (which
is where LEDs are predicted to be next year!) It is always
better to talk about lumens (and lux required) than watts when
it comes to lighting decisions."
I found that on brillianz.co.uk (not a competitor site, just info!)
FYI lux is lumens per square meter. So it accounts for area the light is spread over. Now I wanna know what our typical PC lights and T5 and MH lights produce in lumens/watts on average anybody know?
That must be old artical.
LEDs are up to 150+ lumens of light per watt in the lab.
Most LEDs are at 70-120 lums per watt.
 
swimmer4uus

swimmer4uus

Member
Also, this is geared to "get a bunch of average aquarium hobbyists on board with LED aquarium lamps" Meaning the average joe who is looking into lighting. Once they find out they can't keep SPS, nems, and higher lighting requiring organisims, they'll look into upgrading. 1w LEDs just don't have the omph to get that light to penetrate the water enough.
I'm getting 450 Lumens out of 4 3w cheapo's
 
wangotango

wangotango

Active Member
Originally Posted by fishhunter
http:///forum/post/3233328
That must be old artical.
LEDs are up to 150+ lumens of light per watt in the lab.
Most LEDs are at 70-120 lums per watt.
+1. I think the Cree XR-Es are about 110-120 lumens/watt, the XP-Gs even more.
 
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