Review: Zeusray FL05518 Domed & De-Domed

Suddenly noticed that there’s a yellowish circle band at the outer edge in all zoom modes. Is this normal?

Only one left now…

> yellowish circle band

Let me try a handwaving answer; someone I hope can point to a source with a proper picture of the structure and light path that will be clearer.

All “white” LEDs use a blue-white emitter underneath a layer of phosphor that glows yellow-white.
The light path going through all that plus the lens is giving you an image of the original source.
If you were to look very closely at the emitter (don’t do this without a filter, it’s too bright) you’d see that variation due to the difference in thickness of the phosphor (and maybe of the dome as well) and the variation of brightness of the emitter underneath. If you look closely at the tightly zoomed image of the emitter it’s slightly brighter on the side where the wires connect, and slightly bluer.
If you look at the widest zoom you’re seeing almost none of the central, slightly bluer, direct light, and more of the edges that are lit mostly with the phosphor color.
You also get bands of bright/dark/bright along the edges of the circle, there’s a name for that effect that I’ve forgotten.

Checked my other zoomies and they all have varying amount of yellow band. With Zeusray this effect is more pronounced because it’s the brightest zoomy and thus contrast is more pronounced. Thanks for the answer.

Ordered. or pre-ordered… :frowning:

Is there a De-domed Chimney shot? I see only Domed one.

The first 2 distance shots are domed and de-domed.

Somehow missed those. Comparison of the illumination of the tree by domed and de-domed shows the marked brightness improvement with de-domed.

I just haven’t had the time to put it back together, yet :~

I dedomed one of my zeusray’s yesterday, so far i am not sure how i feel about it.

A bit less output but nicer warmer beam but i think i messed up the heatsinking by dissolving the heatpaste because it get much less warm now and thats possibly the reason for less output.

I will try to reapply some and see if that improves things, another issue i had was i just dunked the whole pill in gas for like a day but i forgot to remove the o ring, so it got completely stiff and i had to use the bottom one instead, and it is slightly to small so the head wobbles some when i zoom now.

Do anyone know where i can buy some o rings that would fit?

Dealmetic got another batch in but the numbers are dropping fast…… :wink:

Any update on why de-domed did not perform better?

Tis the season. The new batch is sold out and it is on backorder again.

I think Dealmetic owes Chicken Drumstick a free light, or, at least, a very big thank you.

I purchased mine on the evening of the 17th and it arrived on the 24th.
The Hong Kong postage paid decal on the bubble mailer envelope was dated 18.12.2014.
That’s a new record for fast shipping from China based businesses for me.

Sorry i haven’t tried yet, i had 2 zeusrays and i gifted the unmodified one for Christmas so i can’t compare domed to dedomed anymore but i have ordered a new one.

All my modding time was spent upgrading some Enlan & Sanrenmu knifes for gifting, but i will get back to the zeusray when all my family & relatives leave after the holidays :santa: i update here when i do.

No hurry, just curious. Happy holidays!

Yeah i am curious to, i miss my little handwarmer :wink:

Chicken Drumstick said that it pulled less Amp, 3.75A for domed and after the dedome 3.43A, so that could also be a factor, or that i perceive the light as less bright when it is less blue, it is hard to know because it is my first dedome.

I wonder if the hot dedome lower the Amp like the gas one?

It could also be that a warmer light is less contrasty than the more blue white light so that is why i perceive it to be less impressive outside, i still like it more as a in house light now when dedomed because it is less jarring blue and a nicer warmer light.

And Happy Holidays to you to :slight_smile:

:bigsmile:

There is a marked brightness difference if you look at the illumination of the tree by domed and de-domed. The tree by de-domed is markedly brighter than the one by domed in the above pics by Chicken Drumstick. I am just puzzled why you don’t get the marked increase in brightness when all involves is simple de-doming the emitter.

But thats the throwyness aspect of it if you look at the house roofs beyond the foliage it is clear that the beam is like half as wide so it is a lot brighter in the center only and the warmer hue could also illuminate the green shrubbery more intensely.

If you look at the sky part of the beam in that picture you see that there is a lot more green in the hue than the domed much bluer beam so guess it fits that it looks brighter also from that it now contain more green in the light.

EDIT
I just have to add that i am not discounting that there is something wrong with my light the heatsinking is still of or it dropped the Amp a lot, i wonder if Chicken Drumstick dedomed also got a lot less warm in the hand after the dedome?