Lumintop BLF GTvn - Best Reflector Thrower?

[Newlumen]

Re: Lumintop GTvn - Best Reflector Thrower?

I think mouser carry them..
https://www.mouser.com/Search/Refine.aspx?Keyword=Synios+KW

 

[archimedes]

I think that's just the y value at that location

 

[Newlumen]

Re: Lumintop GTvn - Best Reflector Thrower?

I talked to member M4D M4X and I think here is where we think the credit is dued

Software: Tom E & Toykeeper
Overall light design input: "BLF Members"
Finalization of Circuitry, Reflector, Host and manufacturing: Lumintop

If I am wrong please correct me as so I can give credit exactly where its dued.

I am particularly interested in who exactly draft the design of the reflector. I absolutely love it! I hate reflectors that are too deep. From experience great depth greatly makes the hot spot smaller and shortened spill width while not increasing too much hot spot intensity. The GT reflector is wide and the depth is just right!

Thanks!

This is posted by blf member name nikola. Here is what he said.

They can have it first, but GT have all European origins

Idea born in France, designed in Croatia,finished in Germany, all calculations and great expertise from Netherland… and so on ..
Oh man, what a project, and what a successful cooperation between people from different countries and continents..

 

[Enderman]

Re: Lumintop GTvn - Best Reflector Thrower?

man, im starting to feel all warm and fuzzy inside.
see, blf, and cpf folks can get along!
we are all here for the same reason for sure
thanks for dropping by mr enderman, and sharing that info sir.
and thanks for all the hours of hard work on the reflector design.
it is definitely begging for a hotrod led to spark it off for sure!

You're welcome, glad I could help!
Whenever I do a bunch of complicated math and stuff to figure things out I love teaching other people, so that more of us can build crazy flashlights.
Back when I started building lights like 5 years ago I relied a lot on forum posts and other people's research to figure out what was best, so hopefully people can also learn from me.

"".......... Looking forward to see more mods of the GT, I bet there are plenty of people waiting for Vinh to mod the GT with a black flat or synios
A Synios KW DLMQ31.SG will do almost 3Mcd in this light....... ""

:naughty: man, you could of at least waited a while to throw that bomb into the equation !
unreal there..
thats getting close to the lemax super-70

Yeah it's a ton of lux! I remember back when people were having trouble get past ~1Mcd with modded LED lights, a lot has changed since then.
Of course there is always a compromise, only 450 lumens from that Synios, but people who love throw will still pay lots of money for that much lux.

Enderman,
Do you know where I can acquire the Synios KW DLMQ31.SG? Also can you explain the value on the green line?
Thanks!

Me and Koef3 bought ours from mouser: https://www.mouser.com/productdetai...GAEpiMZZMt82OzCyDsLFM%2b7yORtb/hA8TjL6yfGeWE=

The green line is the relationship between the reflector depth and the front area.
The front area (y axis) is proportional to lux.
As you increase the depth (while keeping the diameter constant), the front area increases.
This means higher lux, but the deeper you go the slower it increases.

You are correct, a deeper reflector makes the hotspot smaller, while also increasing the corona around it.

 

[twistedraven]

Re: Lumintop GTvn - Best Reflector Thrower?

"".......... Looking forward to see more mods of the GT, I bet there are plenty of people waiting for Vinh to mod the GT with a black flat or synios
A Synios KW DLMQ31.SG will do almost 3Mcd in this light....... ""

:naughty: man, you could of at least waited a while to throw that bomb into the equation !
unreal there..
thats getting close to the lemax super-70

Not quite. The Synios is only .5mm squared and puts out 400ish lumens. In a reflector the size of the GT, we're literally talking about a laser beam, as in-- super small spot with very low output.

The Lemax does it by outputing thousands of lumens.

I'm more of a fan of the Black Flat for larger hosts. Synios is a great LED for smaller pocket throwers.

 

[richbuff]

Re: Lumintop GTvn - Best Reflector Thrower?

... ... ... There are diminishing returns... ...

The two DR words: Such is what engineering decisions are based on. How much more or less of this in return for more or less of that.

I know that this light is a huge throw performer, because of its very large size. How much more throw, subjectively, to my eyes? I will find out, when Vinhs' mods are released.

I like math and physics. I like high performance flashlights. I like walking around outside in the dark with very large flashlights in both of my hands. I don't mind waiting for what I want to be developed and produced. I don't mind paying my share of the cost. That is my way of saying Thank You to the developers, producers and modifiers.

 

[BVH]

Re: Lumintop GTvn - Best Reflector Thrower?

........................................ I don't mind waiting for what I want to be developed and produced. I don't mind paying my share of the cost. That is my way of saying Thank You to the developers, producers and modifiers.

Yep! I share those feelings.

 

[Skylumen]

Re: Lumintop GTvn - Best Reflector Thrower?

Things are moving slow as we are waiting for the new wave of drivers...Cant wait...

 

[hahoo]

Re: Lumintop GTvn - Best Reflector Thrower?

Things are moving slow as we are waiting for the new wave of drivers...Cant wait...

man, i was hoping for some beamshots tonight, with the new cft-90
if not that, just slap a flat black in it and see if you can signal some aliens!
jk v, we will patiently wait ....

 

[DenBarrettSAR]

Re: Lumintop GTvn - Best Reflector Thrower?

I talked to member M4D M4X and I think here is where we think the credit is dued

Software: Tom E & Toykeeper
Overall light design input: "BLF Members"
Finalization of Circuitry, Reflector, Host and manufacturing: Lumintop

If I am wrong please correct me as so I can give credit exactly where its dued.

The main members of the development & design of the GT are:

• TheMiller
• Texas_Ace
• Tom E
• DEL
• JasonWW
• ToyKeeper
• Lumintop (manufacturer)
• And many suggestions, feedback, and help from many other BLF members included in its development.

 

[Fresh Light]

Re: Lumintop GTvn - Best Reflector Thrower?

The main members of the development & design of the GT are:

• TheMiller
• Texas_Ace
• Tom E
• DEL
• JasonWW
• ToyKeeper
• Lumintop (manufacturer)
• And many suggestions, feedback, and help from many other BLF members included in its development.

Thanks to all and thanks for adding DEL. I haven't seen his name listed here before and he was the one that did the design work on the driver for the GT.

 

[LichtAn!]

Re: Lumintop GTvn - Best Reflector Thrower?

vinhnguyen54 I wonder why you think people wouldn't pay over 400$ for a modded version. You had lights here before that were more expensive and tbh the GTvn90 will be hard to beat anytime in the near future. So I'd pay over 400$ for it for sure!

 

[brighterthanthesun]

Re: Lumintop GTvn - Best Reflector Thrower?

Texas Ace put a 70.2 in the GT and got 6000-7,000 lumen and over 1300 meters of throw. I think that this might be the mod that I want. The stock GT lights things up at distances much greater than I can even see the things! Don't get me wrong, I like lighting up things a mile and a half away as much as the next guy, but I think I would rather have a lot more lumen and sacrifice some lux.

I just came in from the cold (-18F) after using the GT to spot across a field at the tree line 3/4 mile away. With my naked eye I could see that the tree line was lit pretty well, but I could not see much. I then stepped away and used binoculars to look at the trees in the illuminated area. Wow, the area was lit up way more than I thought it was. I could see the area very clearly. Damn, I wish my naked eyes were this good!

 

[hahoo]

Re: Lumintop GTvn - Best Reflector Thrower?

Texas Ace put a 70.2 in the GT and got 6000-7,000 lumen and over 1300 meters of throw. I think that this might be the mod that I want. The stock GT lights things up at distances much greater than I can even see the things! Don't get me wrong, I like lighting up things a mile and a half away as much as the next guy, but I think I would rather have a lot more lumen and sacrifice some lux.

I just came in from the cold (-18F) after using the GT to spot across a field at the tree line 3/4 mile away. With my naked eye I could see that the tree line was lit pretty well, but I could not see much. I then stepped away and used binoculars to look at the trees in the illuminated area. Wow, the area was lit up way more than I thought it was. I could see the area very clearly. Damn, I wish my naked eyes were this good!

ive done the same thing with my binoculars
amazing what light you miss being that far out

 

[brighterthanthesun]

Re: Lumintop GTvn - Best Reflector Thrower?

ive done the same thing with my binoculars
amazing what light you miss being that far out

If the GT was not so darn heavy I would mount it to my binoculars and use them together. Maybe I need to look into puting the best throwing led into my T21vn and mount that on my binoculars.

 

[LichtAn!]

Re: Lumintop GTvn - Best Reflector Thrower?

Will there be any prototype soon from Vinh? Can't wait to the first results.

 

[UrbanExplorer]

Re: Lumintop GTvn - Best Reflector Thrower?

I have always wanted to calculate such quantities before but how does one go about doing that? Especially the quantity of light that goes to spill and the quantity of light that goes to the spot.

 

[Skylumen]

Re: Lumintop GTvn - Best Reflector Thrower?

Will there be any prototype soon from Vinh? Can't wait to the first results.

I want to wait until getting the driver develop for this light before I test. Also want to give it soemtime so we can just enjoy how good the stock light is.

 

[Enderman]

Re: Lumintop GTvn - Best Reflector Thrower?

I have always wanted to calculate such quantities before but how does one go about doing that? Especially the quantity of light that goes to spill and the quantity of light that goes to the spot.

It took a lot of work and research, I haven't made a post yet explaining each calculation but essentially the lumens in spill/spot were calculated using a triple integral in polar coordinates.
The polar emission of the LED (found on the data sheets) follows cos(theta) so we can integrate in a hemisphere around the LED to sum the total intensity, and intensity over area is proportional to lumens.
Then this can be sued to determine how many lumens are emitted between different angles from the LED.

This also only works for flat-dome or dedomed LEDs.

 

[hahoo]

Re: Lumintop GTvn - Best Reflector Thrower?

It took a lot of work and research, I haven't made a post yet explaining each calculation but essentially the lumens in spill/spot were calculated using a triple integral in polar coordinates.
The polar emission of the LED (found on the data sheets) follows cos(theta) so we can integrate in a hemisphere around the LED to sum the total intensity, and intensity over area is proportional to lumens.
Then this can be sued to determine how many lumens are emitted between different angles from the LED.

This also only works for flat-dome or dedomed LEDs.

didnt know you spoke Chinese enderman?


cause thats what it looks like to me trying to read what you just wrote.:ironic:

care to translate that ? LOL !

course , im just a dumb ole country boy that likes bright flashlights