Review: Zeusray FL05518 Domed & De-Domed

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Fritz t. Cat
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I wouldn’t soak the whole pill, but I have soaked one or two with the star with no problems.

Flashlight designers should look at lighthouses and pottery.
这些谁设计的手电筒应该看灯塔,以及在陶器。

cajampa
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guitar89 wrote:
Just to ask, I’m trying to dedoming using thinner (and also anothere attempt with gasoline 95).

Could I just soak it with the brown disc together, or thinner/gasoline will damage the brown disc ?

I did it without the brown reflector and Chicken Drumstick said his got slightly damaged when he did it without taking of the reflector, and i you do the entire pill, please remember to take of the o ring, mine got damaged by the gas because i didn’t remove it.

Omega_17
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I did the dedome on this light easily ! Just let it run on high for 5 minutes with a fresh battery and then use a wood toothpick to lightly lift the dome off all-around the LED !
The throw is rather nice for such a small lens (just a few millimetres larger than SK68) but a C8 size reflector light is much better at everything, expect flood of-course.

You can’t use it on high for very long or it will burn your hand ! Even worst if you use copper DTP star. But for the price and the good build quality (except the cheap anodizing) its an incredible value.

cajampa
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Interesting, i want try something like that on my next dedome.

You said on coppar it is even hotter? i bought some diffrent xp-l & xm-l2 on noctigon from hank that i had planned to try in the zeusray when i get some better driver for it.
Did you take the stock led and put in on a coppar mcpcb?

Fritz t. Cat
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Omega_17 wrote:
but a C8 size reflector light is much better at everything, expect flood of-course.

I don’t have a cell in my C8.
Omega_17 wrote:

You can’t use it on high for very long or it will burn your hand !

As Cereal Killer said, that is what modes are for.

Flashlight designers should look at lighthouses and pottery.
这些谁设计的手电筒应该看灯塔,以及在陶器。

Omega_17
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Quote:
You said on coppar it is even hotter? i bought some diffrent xp-l & xm-l2 on noctigon from hank that i had planned to try in the zeusray when i get some better driver for it. Did you take the stock led and put in on a coppar mcpcb?

The LED will be cooler but the flashlight body will be hotter much faster with noctigon.
I did it with the stock LED, its easier to do it with a aluminium star because you want the LED dome to be very hot so it become soft.

You should try XP-G2 1D for dedome, better tint and better throw. There won’t be much change compared to stock with another XM-L2 or XP-L.

cajampa
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Thanks for the answer Omega_17,

The plan is to get some A17DD-SO8 or BLF17DD drivers, and upgrade the switch to an omten and use one of the newer lumens bins XP-L V6 or XM-L2 U3 in some different hue bins to test what hue i like the most, i am rather new at this so i don’t have a preference yet. i also upgraded the lens to a glass one, it is not perfect in focus but almost so i will probably leave it like that.

I got the XP-L V6 3D among others because i think it is the warmest of the highest lumens bins.

So my plan is to max it out to the best of my abilities Smile the one thing i don’t know yet is what i like in hue, but thats where the different xp-l and xm-l2 comes in.

I know you said there is not much to gain from an similar led but Tom E upgraded his with the XM-L2 U3 on noctigon + omten + braided spring upgrade and got a pretty respectable lumens boost even before the FET driver upgrade, ~300 lumens extra.

This was Tom E’s post about it from the consolidated zeusray thread
“Post above has latest lumens measured with the U3 1A. The original #1 stock ZeusRay did 782 OTF stock w/tail of 3.6A. The 918 OTF lumens # was before the tailswitch replacement, afterwards, I measured 1081 OTF lumens. Also I found out later the XM-L2 U2 1A I had and tested in there was defective – it had that weird doggy image on the dye? I didn’t think it effected max lumens, but the XM-L2 U3-1A definiteily did better – bout another 220 lumens bump.”

Chicken Drumstick
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cajampa
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Nice video review Smile

And surprisingly good camera work in the dark with lots of different flashlights to keep track of Wink

Wentil
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What is the effect in terms of lifespan on the pill after de-doming it?

I would happily convert all my pills but if it kills the life it’s not a good trade.

Fritz t. Cat
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I think you have a point Wentil. Cree has come out with an almost domeless version, but it has some left to protect the LED. I think the life span effect must be negligible as long as you keep the light indoors.

Flashlight designers should look at lighthouses and pottery.
这些谁设计的手电筒应该看灯塔,以及在陶器。

Wentil
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Fritz t. Cat wrote:
I think the life span effect must be negligible as long as you keep the light indoors.

I don’t think it’s a weather issue, as after all the interior of the flashlight’s head, including the collaminator, is pretty much waterproof, given its O-ring design and tight threading.

I’m more concerned that by removing the dome, the lifetime of the emitter surface will be adversely affected. It may burn much more brightly, but at what cost? Surely the engineers at CREE didn’t waste their time and money engineering, manufacturing and applying that dome atop each LED emitter surface for no purpose.

— Wentil

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Wentil wrote:
Fritz t. Cat wrote:
I think the life span effect must be negligible as long as you keep the light indoors.

I don’t think it’s a weather issue, as after all the interior of the flashlight’s head, including the collaminator, is pretty much waterproof, given its O-ring design and tight threading.

I’m more concerned that by removing the dome, the lifetime of the emitter surface will be adversely affected. It may burn much more brightly, but at what cost? Surely the engineers at CREE didn’t waste their time and money engineering, manufacturing and applying that dome atop each LED emitter surface for no purpose.

— Wentil

THe purpose of dome is to extract more lumen, make the LED more efficient, so its not wasting their time and money. WE dedome it, is to either get more throw or to change the tint, its like trading for lumen & efficiency.

If have dedomed and dome version, you can compare it. The light is more gradual and even across the illumination area with dome version, where as dedomed version have different tint (colour), different brightness, different throw distance, etc. There are a thread sharing all about dedome facts, but i forgot where is it ~

Wentil
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guitar89 wrote:
The purpose of dome is to extract more lumen

It seemed to me (in the photos of the review, above) that far more lumens were being generated by the pills with their domes removed.

My interest is mainly in getting the most lumens possible, it doesn’t matter to me whether the tint of the light is cooler or warmer.

However, if removing the dome significantly shortens the life of the pill, that’s something I want to know in advance. Smile

tristanxoxo
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Wentil wrote:
guitar89 wrote:
The purpose of dome is to extract more lumen

It seemed to me (in the photos of the review, above) that far more lumens were being generated by the pills with their domes removed.

My interest is mainly in getting the most lumens possible, it doesn’t matter to me whether the tint of the light is cooler or warmer.

However, if removing the dome significantly shortens the life of the pill, that’s something I want to know in advance. Smile

I’m not sure I understand what you are saying. When you say “pill” do you mean driver? If all else is equal, a domed LED will produce more output than a de-domed LED. If output is all that you care about, leave the dome on.

Fritz t. Cat
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Used in rain and dust, even though it starts off sealed, I would expect that the LED will likely need wiping off some time. Without the dome, that means wiping off the bond wires as well as the dust and mud.

Flashlight designers should look at lighthouses and pottery.
这些谁设计的手电筒应该看灯塔,以及在陶器。

hank
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cabfrank
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I’m sure domed emitters last longer, but they last a lot of hours anyway. They won’t be the first things to go out on your flashlight, unless, of course, they get fried and go poof, but de-doming won’t change that anyway. I’m not a huge fan of de-doming, but I’m in the minority, and haven’t done much of it.

Wentil
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cabfrank wrote:
I’m sure domed emitters last longer, but they last a lot of hours anyway.

My only goal is to increase lumen output of the flashlight, so if de-doming accomplishes that — and does not massively reduce the emitter’s lifespan — I’ll give it a shot. I have a large number of LED flashlights to experiment with. Smile

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tristanxoxo wrote:
If all else is equal, a domed LED will produce more output than a de-domed LED. If output is all that you care about, leave the dome on.

Yes, lumen output is my main goal. So de-doming will not increase output. Thanks, I’ll leave my LEDs domed. Smile

Fritz t. Cat
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Wentil wrote:
cabfrank wrote:
I’m sure domed emitters last longer, but they last a lot of hours anyway.

My only goal is to increase lumen output of the flashlight, so if de-doming accomplishes that — and does not massively reduce the emitter’s lifespan — I’ll give it a shot. I have a large number of LED flashlights to experiment with. Smile


Dedoming increases throw. Lux I think is the unit of light per solid angle. It slightly decreases lumens, total light output in all directions.

Flashlight designers should look at lighthouses and pottery.
这些谁设计的手电筒应该看灯塔,以及在陶器。

Wentil
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Fritz t. Cat wrote:
Dedoming increases throw. Lux I think is the unit of light per solid angle. It slightly decreases lumens, total light output in all directions.

That’s admittedly a bit puzzling, as the throw of the lumens being generated is dictated by the angle of the reflector, not the emitter. If you aren’t actually generating more lumens by de-doming, and also since you aren’t changing the reflector by removing the dome, you must be changing the angle of the generated light before it hits the reflector. Making it deeper in the well of the reflector, per se, less “floody”, and more concentrated into one area… which would, in turn, increase the effective throw by reducing the width of the beam — which makes sense, given that you say you effectively reduce the light output in other directions than the throw.

Fritz t. Cat
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As Dr. Jones explains, the dome helps light escape at the surface of the phosphor. Without it, that light is reflected back and some of it scatters out. That makes the surface brighter. Dedoming makes the LED surface brighter but makes it look smaller from the outside so the total light is less.

Flashlight designers should look at lighthouses and pottery.
这些谁设计的手电筒应该看灯塔,以及在陶器。

Wentil
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Well then, I’ll keep the domes on, for maximum light output.

Thanks, Fritz! Smile

Chicken Drumstick
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Wentil wrote:
What is the effect in terms of lifespan on the pill after de-doming it?

I would happily convert all my pills but if it kills the life it’s not a good trade.


I have 3 Zeusray’s, one de-domed, all used and abused and all still working. Smile
Chicken Drumstick
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Review of the Zeusray EDC120:
http://budgetlightforum.com/node/39975

Noki
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Thanks for a nice review.
I decided to get one Zeusray EDC100 after trying few other zoomies.

I’m very happy with the light, its very bright and good made for the price. In fact, I ordered 2 more, that’s how much I like it Smile Also, I would like to add that mine has last mode memory Smile It memorizes last mode if you leave it on for a 2 seconds or even less. That’s perfect, exactly what I need. I just hope Dealmetic will send me same lights in my new order.

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