Steepest Reflector Angle

Abiqua

Abiqua

Well-Known Member
What is the steepest angle that someone has used on their light at, say 12" away, 100-200watts? DIY or Commercial

Just curious, checking out Ledil Angelina reflectors for the vero's and 1 or 2 seem suitable @ 64 degrees. Prefer 90 if I could. More just to mess around with reflectors than anything.

64 seems to be a waste of my time though. I just want to find ways to utilize the light better in my micro-grow.


That steep of a reflector might be great in a really tall and skinny tall stealth grow in an old grandfather's clock, but not a 2x2 space.......with a low ceiling.....



Chime in if you have an opinion.



Going with
Bridgelux vero 13's

about ready to order the 1st bar.

2 Vero 13's [3/4000k] - Meanwell LDD's 1000ma - PS2 Power Supply - 12" Heatsink - 80mm fans

[Thinking about going to 8 chips eventually on 4 separate bars]
 
Positivity

Positivity

Well-Known Member
I like your bar idea. I was thinking that could be quite optimal especially with some three up red stars or something.

I'm using 80 degree lenses right now. Actually in a bit of a pickle since I have a low ceiling. I need about 20" height above canopy for a 24" inch spread on a 8.5" heatsink. Thats just on the width though not length. There's a chance you could run into spread problems without enough overhead.

i don't think anything tighter than 90 would work well with 12". Wouldn't hurt to order samples and try a few out
 
guod

guod

Well-Known Member
Leds with 60 degree lenses.
tent size 2x2 ft
height above top of canopy - 6" to 10"
Power 48W
test1all.jpgtest1full.jpgtest1AM.JPGtest1AE.jpg
 
Bumping Spheda

Bumping Spheda

Well-Known Member
I think 64 degrees is fine. I believe Illumitex LED arrays were ~50 degrees, each array was ~10W. They penetrated the canopy fairly well, too. I've thought about buying some Soraa MR16 bulbs. Those are 12W, single chip, 36 degree beam angle. I wouldn't want to go much under 40 degrees, but 64 sounds fine to me.

No reflector, though, and you could pretty much get the COB's as close as you wanted, I'd imagine.
 
Positivity

Positivity

Well-Known Member
14... No kidding...wow. Those are some finely tuned lights I imagine. I need a light meter to really guage my spread.
 
Abiqua

Abiqua

Well-Known Member
I have been kicking the bars around for a while, they are almost modular in a way. As far as the stars go, I have been thinking similarly, maybe a violet 3w and two 730's for shits and giggles. Maybe even a couple of "greens" around 5-600 and this I found this example last night......Evil cluster build -Lighting Forum - Nanoreef





Positivity said:
I like your bar idea. I was thinking that could be quite optimal especially with some three up red stars or something.

I'm using 80 degree lenses right now. Actually in a bit of a pickle since I have a low ceiling. I need about 20" height above canopy for a 24" inch spread on a 8.5" heatsink. Thats just on the width though not length. There's a chance you could run into spread problems without enough overhead.

i don't think anything tighter than 90 would work well with 12". Wouldn't hurt to order samples and try a few out
Click to expand...

  • I am not hung up on reflectors, just really interested in adding penetration. As far as ceiling height, planning to build Around the bars, so ceiling height should be an issue. Or a 62x36x20 tent.
  • Noted @ 12" is probably too close, that's fine.
  • Ledil's Datasheet's and the corresponding info I could find, is terrible, so I decided to ask questions, which I am terribly informed about! Live and Learn
 
Abiqua

Abiqua

Well-Known Member
guod said:
Leds with 60 degree lenses.
tent size 2x2 ft
height above top of canopy - 6" to 10"
Power 48W
Click to expand...
Wanna post your specs, that looks some well thought out DIY.

Lenses and led's you are using?

Thanks Guod!
 
Abiqua

Abiqua

Well-Known Member
Bumping Spheda said:
I think 64 degrees is fine. I believe Illumitex LED arrays were ~50 degrees, each array was ~10W. They penetrated the canopy fairly well, too. I've thought about buying some Soraa MR16 bulbs. Those are 12W, single chip, 36 degree beam angle. I wouldn't want to go much under 40 degrees, but 64 sounds fine to me.

No reflector, though, and you could pretty much get the COB's as close as you wanted, I'd imagine.
Click to expand...
Nice, thanks for pointing out those options, have to read up on them and pay more attention to those bulbs!

I have thought about going no reflector. Definitely. They are already 115 d for the Vero's 13's, so that's not bad at all, out of the box.
 
Abiqua

Abiqua

Well-Known Member
Penetration is a fallacy with steep angle lenses.

It seems that the farther away you put the lights to "even out" your lighting will REDUCE spectrum. Not good.
 
Mechmike

Mechmike

Well-Known Member
I have 45 degree angle lenses on my top light. I use a light rail to keep the overhead light moving and because of that I keep the light about an inch away from the highest point of the canopy. If the light doesn't stay in motion it will bleach/stunt the tops when that close but moving it gets super intense light uniformly over the entire canopy.
 
Abiqua

Abiqua

Well-Known Member
It took 4 minutes before it would recognize the fucking jay peg and Not as a gif. Then even added the "gif" as an attachment. Wtf, lol, I didn't even have a file with that ext. Then it won't let me delete the "gif" it attached, that I never added.



 
tags420

tags420

Well-Known Member
Puff, you beat me to it.
They are the tightest of commercial units that I know of, but there a small discrepancy. Apache doesn't list in degree's, it show a % on the site. Hard to catch. And even % is the wrong symbol. The 14's are 28* and the 50's are 100, that's what AT told me. The lenses were designed with one of the swiss like counties(can't remember which) so maybe that's how they do things there.
 
Mechmike

Mechmike

Well-Known Member
You'll get more out of those Luxeons if you move them a little further away from the big reflector cup. The reflector cup will block some of the wider angle light of the Luxeons. I'm a big fan of the Luxeon ES diodes and stevesleds as well.
 
Abiqua

Abiqua

Well-Known Member
Mechmike said:
You'll get more out of those Luxeons if you move them a little further away from the big reflector cup. The reflector cup will block some of the wider angle light of the Luxeons. I'm a big fan of the Luxeon ES diodes and stevesleds as well.
Click to expand...
Yep, I hear yah. One part of the earlier mishap is the link .Evil cluster build -Lighting Forum - Nanoreef didn't go posted with the pic, back in post #7. This is not mine!

I am thinking about using the 4.2" or 3.9" wide heatsinks from HSusa and putting 3-V13's per every 12" inches of heatsink with 2 80mm fans. [2 per 12" seems reasonable enough, however]

Might expand to 2 ft. long bars with 6 chips per bar. Its cheap enough to expand real easy, but all those fans might kill it for me.

With the Evil cluster build and positivity's suggestion, I can't say I am not tempted to throw on a couple of fuck around diodes on separate driver or two per bar......

My budget is shit however and I am starting with post #1.

Thanks for the input!
 
Abiqua

Abiqua

Well-Known Member
puffenuff said:
My apache uses 14 degree lenses.
Click to expand...
tags420 said:
Puff, you beat me to it.
They are the tightest of commercial units that I know of, but there a small discrepancy. Apache doesn't list in degree's, it show a % on the site. Hard to catch. And even % is the wrong symbol. The 14's are 28* and the 50's are 100, that's what AT told me. The lenses were designed with one of the swiss like counties(can't remember which) so maybe that's how they do things there.
Click to expand...

Very interesting about that. I have glossed over most of the A51/AT threads, mostly because I know I can't afford them, but damn I need to pay attention to all the lighting details they are using.

One question I have, does size, the cob being bigger, than a 3w, add an exponential component to its reflectivity?

That is a small diode seems perfect to get "hot" in a little area and reflect it to the best of ability for its piece of area and build around that accordingly.
These cob are different beasts, as most you you all know...... so it seems like lots of power pushed into a very steep angle is great for some things but not necessarily cannabis canopy penetration from a Cob. My terminology sucks, but it seems to soften the light with one giant diode you will need to decrease your angle a bit because of the exponential power and light can attempt to go elsewhere.....while with small diodes you already occupy that space essentially with maximum reflectance and haven't "forced" more spectrum into its "quadrant"......as light is being forced to the edges it is being done so with a smoother blend from the 3w's?

any one elaborate that gobble de gook shit?....ha
 
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