Angelina Reflector Improvement?

DeMoNeye

Well-Known Member
Shortly gowing to be running 4 Cree cobs fitted with angelina reflectors.

Would it make sense to wrap the outside of the reflectors with aluminium tape so all the light is reflected out and down rather than leaking out the sides?
 

CobKits

Well-Known Member
they make metal reflectors but all the beams are more narrow.

i dont think youd gain much light that way. we should find a shop that can chrome these like the chrome plastic auto emblems, and some of the other ledil reflectors
 

DeMoNeye

Well-Known Member
Looked into plastic chroming - hugely expensive for 4 shades - eekkkk!

Once I'm up and running I'll have a little experiment - I can see some little aluminium hats being made as a side effect of this project!

aluminum-foil-hat.jpg
 

Banana444

Well-Known Member
I just ordered a kit from rapid led...they said they were angelina reflectors but when they came, they were much bigger, not white but chrome looking as you say. If i had one of those fancy light meters i would do a test to see the light spread of these different reflectors.
And i had noticed the light that comes out around the base of the holder...thought maybe high temp silicone but decided it wasnt much and that light was going to the side the same before i put the reflector on and its not much.
 

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DeMoNeye

Well-Known Member
I just ordered a kit from rapid led...they said they were angelina reflectors but when they came, they were much bigger, not white but chrome looking as you say. If i had one of those fancy light meters i would do a test to see the light spread of these different reflectors.
And i had noticed the light that comes out around the base of the holder...thought maybe high temp silicone but decided it wasnt much and that light was going to the side the same before i put the reflector on and its not much.
Is there a manufacturer / model number on those sexy chrome ones?
 

BobCajun

Well-Known Member
My question is what's wrong with a 60 degree metallized Angelina? Who made the determination that a 90 degree beam angle is required or even desirable? It's like one guy bought the 90s and every single person after that just blindly imitated the first guy. A 90 degree beam is not intense downward directed light. I haven't even seen one post where somebody displayed independent thought and bought the 60 degree metallic Angelinas instead of the 90 degree translucent ones. Literally every damn person on here bought those translucent sidelighting under counter reflectors and never even asked themselves why the hell am I buying this shit, I can see right through this, who the hell thought this was a good idea? Nope, never crossed their mind.

But yeah, I would wrap those in foil. If you start wrapping it inside and then fold it back around the outside it will stay on by itself because it's all wrapped up. No tape required. See how I did it on a LED bulb after cutting off most of the diffuser? Single piece of foil. I give the inside a polish with some tissue when it's done to get the fingerprints off. The fact that it's a little crinkly doesn't matter. It'll just diffuse the light a little. Will foil have as much or more reflectivity than the translucent plastic? I don't know. Guess you'd have to do some tests. At least none is getting through.

 
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alesh

Well-Known Member
My question is what's wrong with a 60 degree metallized Angelina? Who made the determination that a 90 degree beam angle is required or even desirable? It's like one guy bought the 90s and every single person after that just blindly imitated the first guy. A 90 degree beam is not intense downward directed light. I haven't even seen one post where somebody displayed independent thought and bought the 60 degree metallic Angelinas instead of the 90 degree translucent ones. Literally every damn person on here bought those translucent sidelighting under counter reflectors and never even asked themselves why the hell am I buying this shit, I can see right through this, who the hell thought this was a good idea? Nope, never crossed their mind.

But yeah, I would wrap those in foil. If you start wrapping it inside and then fold it back around the outside it will stay on by itself because it's all wrapped up. No tape required. See how I did it on a LED bulb after cutting off most of the diffuser? Single piece of foil. I give the inside a polish with some tissue when it's done to get the fingerprints off. The fact that it's a little crinkly doesn't matter. It'll just diffuse the light a little. Will foil have as much or more reflectivity than the translucent plastic? I don't know. Guess you'd have to do some tests. At least none is getting through.

The white transcluent Angelina is the most efficient Ledil reflector for 3590. I don't think that wrapping them in tin foil would do them any good.

@Banana444 They're probably either F13380_ANGELA-M (27°beam) or F13381_ANGELA-W (44°).
 

HydoDan

Well-Known Member
My question is what's wrong with a 60 degree metallized Angelina? Who made the determination that a 90 degree beam angle is required or even desirable? It's like one guy bought the 90s and every single person after that just blindly imitated the first guy. A 90 degree beam is not intense downward directed light. I haven't even seen one post where somebody displayed independent thought and bought the 60 degree metallic Angelinas instead of the 90 degree translucent ones. Literally every damn person on here bought those translucent sidelighting under counter reflectors and never even asked themselves why the hell am I buying this shit, I can see right through this, who the hell thought this was a good idea? Nope, never crossed their mind.

But yeah, I would wrap those in foil. If you start wrapping it inside and then fold it back around the outside it will stay on by itself because it's all wrapped up. No tape required. See how I did it on a LED bulb after cutting off most of the diffuser? Single piece of foil. I give the inside a polish with some tissue when it's done to get the fingerprints off. The fact that it's a little crinkly doesn't matter. It'll just diffuse the light a little. Will foil have as much or more reflectivity than the translucent plastic? I don't know. Guess you'd have to do some tests. At least none is getting through.

Aluminum foil absorbs more light than it reflects!!
 

DeMoNeye

Well-Known Member
Totally agree about wrapping in foil, but I will be wrapping the outside in aluminium foil tape. All they light leaking from the translucent shade should be going down...
 

CobKits

Well-Known Member
id totallyput a dab of silicone over those exposed 90V terminals on the A19 if i was doing the aluminum foil trick, just sayin...
 

wietefras

Well-Known Member
If you want most light on the plants, don't use a reflector at all and reduce the distance to the canopy. Usually around half for a 115 degree beam angle compared to 90 degrees.

Aluminum foil absorbs more light than it reflects!!
No it doesn't
 

HydoDan

Well-Known Member
If you want most light on the plants, don't use a reflector at all and reduce the distance to the canopy. Usually around half for a 115 degree beam angle compared to 90 degrees.


No it doesn't
So the aluminum foil absorbing light is some more bad riu info??
Totally agree with no reflectors... mine work well at 10"...
 

Bubblin

Well-Known Member
I'm painting mine with BEHR Premium Plus.
Ultra Pure White Flat Zero VOC Interior Paint #1050
 

DeMoNeye

Well-Known Member
Wrapped externally only - leave the reflector to reflect and I've just tried to keep all light within the shade...

Got to love aluminium tape!

DSC_0248.JPG
 
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BobCajun

Well-Known Member
Wrapped externally only - leave the reflector to reflect and I've just tried to keep all light within the shade...

Got to love aluminium tape!

View attachment 3796909
Yeah that worked well. Outside should suffice. Now, somebody could make some money by producing metallic 90 degree COB reflectors. They would totally scoop all of Ledil's DIY COB grow light customers. How hard could it be? You've got the model right there to copy. Just a "coincidence" that it's exactly like Ledil's.
 
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