OSRAM CSLNM1.TG 1mm, CSLPM1.TG 2mm, CULNM1.TG 1mm

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Enderman
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That’s a good video showing how bad that ledil lens is.
So much wasted and scattered light.
A single surface aspheric lens is the way to go.

Th558
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Some ppl are saying you can DD this led (1mm) and some are saying you can’t. I’m really confused. If I use a keeppower protected 3500mah in a GT mini how much current will it draw?

Lexel
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Th558 wrote:
Some ppl are saying you can DD this led (1mm) and some are saying you can’t. I’m really confused. If I use a keeppower protected 3500mah in a GT mini how much current will it draw?

for DD the current with full cell needs to be below 4.5A, so some older cells like NCR18650B with PCB may do only 4.5A when full
also you may try to solder simply a 1W 47mOhms resistor on each contact on the MCPCB to get the current limited

you need to check with a clamp meter

BurningPlayd0h
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X3 wrote:
BurningPlayd0h wrote:
Th558 wrote:
The GT mini has a FET 4.5A driver. Does this mean it’s direct drive or constant current? I want to use this led but don’t know if the stock driver will work.

I don’t know where you read that the driver outputs “4.5A” but the whole point of a FET is that it will pull basically all the current the battery can provide (minus the resistance of the circuit in the host and driver).


The first announcement of the Mini-GT was about a 4,5A FET driver…

GT-Mini User Manual

Quote:
17 W, 4.5 A regulated buck driver
with conversion efficiency that
exceeds 90%. Parasitic drain while
OFF is ~27 μA.

That quote says “regulated buck driver”…

IDK how they managed to get that into the manual though lol.

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BurningPlayd0h wrote:

That quote says “regulated buck driver”…

IDK how they managed to get that into the manual though lol.


The GT mini Manual mostly copied from the GT manual and Lumintop made a mistake that they written buck driver. It is not a buck driver. it is a fet+7135.
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Finally got my few white flat (CSLNM1.TG) builds sorted. All now using L4P LD-A4 drivers set to 5.5a

Measurements at 20’

Convoy L2 with single liitokala black: 407,659 candela, 720 startup lumens
Cometa with liitokala black: 333,708 candela, 780 startup lumens (zoomed in for sphere)
Convoy C8 with 30Q: 219,623, 720 startup lumens

Had to sand the centering rings down to adjust focus on the c8 and l2 a little. I’m still not 100% happy with it, but I think it is nearly right.

KawiBoy1428
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nkresho wrote:
Finally got my few white flat (CSLNM1.TG) builds sorted. All now using L4P LD-A4 drivers set to 5.5a

Measurements at 20’

Convoy L2 with single liitokala black: 407,659 candela, 720 startup lumens
Cometa with liitokala black: 333,708 candela, 780 startup lumens (zoomed in for sphere)
Convoy C8 with 30Q: 219,623, 720 startup lumens

Had to sand the centering rings down to adjust focus on the c8 and l2 a little. I’m still not 100% happy with it, but I think it is nearly right.


Very NICE! Thumbs Up

KB1428 “Live Life WOT

polarweis
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nkresho wrote:
Finally got my few white flat (CSLNM1.TG) builds sorted. All now using L4P LD-A4 drivers set to 5.5a

Measurements at 20’

Convoy L2 with single liitokala black: 407,659 candela, 720 startup lumens
Cometa with liitokala black: 333,708 candela, 780 startup lumens (zoomed in for sphere)
Convoy C8 with 30Q: 219,623, 720 startup lumens

Had to sand the centering rings down to adjust focus on the c8 and l2 a little. I’m still not 100% happy with it, but I think it is nearly right.

I thought there was a problem with that driver getting to hot?

"It wouldn’t be so bright if there wasn’t a shadow every once in a while." - Jason Mraz

contactcr
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What did you use to make the 17mm drivers larger?

KawiBoy1428
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contactcr wrote:
What did you use to make the 17mm drivers larger?

Maybe the store bought brass adapters…or make your own out of copper crush washers…like I do?

KB1428 “Live Life WOT

TheDude
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My results from installing CSLPM1.TG into a Manker T01

T01 – Tune Up

That's just like . . . your opinion man.

nkresho
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KawiBoy1428 wrote:
contactcr wrote:
What did you use to make the 17mm drivers larger?
Maybe the store bought brass adapters…or make your own out of copper crush washers…like I do?

Yup. Adapters from kaidomain, sanded thinner to fit. They’re a little tall in stock form.

I grabbed some 20s and 22s.

I’d love to do an l6 or mod my gt with this emitter.

Any other drivers out there that’ll do narsil eswitch and limit current?

Th558
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Can you measure the temp of the driver after 2 mins?

contactcr
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Fyi Hank (intl-outdoor.com) posted some of the 1mm leds bare and on stars. You can add optional gasket with it also.

I even emailed Hank and ordered extra gaskets without led or pcb.

thijsco19
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Someone knows a source for a white flat on a 26mm board?

smokuxx1987
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thijsco19 wrote:
Someone knows a source for a white flat on a 26mm board?

MCPCB from maxtoch
And LED from Led4power.
Soldering individual.
Enderman
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thijsco19 wrote:
Someone knows a source for a white flat on a 26mm board?

No, you would need to do it yourself.
Enderman
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Did an intensity test for the CSLNM1.TG

LED obtained from Led4Power on a 20mm copper MCPCB.
LED heatsinked on a Coolermaster GeminII S CPU cooler with a 120mm corsair SP fan at full speed.
Thermal Grizzly Conductonaut liquid metal used between the MCPCB and heatsink.
MCPCB tightened down with two screws.

Luxmeter is an LX1330B.
Distance from LED to luxmeter measured with a UT393B laser meter at 1m +/- 0.01
Stray light from LED blocked using Edmund Optics flock paper to avoid reflections.

Current was monitored with a UT210E clamp meter.
Power supply used is a DPS5020, also used for the voltage readings.

Die area used for calculations is from datasheet, 1.03mm x 1.03mm

Results:

Very impressive LED under extreme cooling.
Peak reached at ~5.6A, would not recommend going this high in a flashlight host.
Should be close to 700cd/mm^2 with an RLT collar, if I feel like it I might redo the test with a collar on it.

luminarium iaculator
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Nice test… I have put that test in a first post.

Mine is running fine in FET DD rig setup. Nothing died yet. Generic flashlight host which goes from 5.8-4A depends on low current battery.

So I don’t think it will die even if it is not super cooled like in your test… But time will tell. Members will share experiences Thumbs Up

Enderman
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Yeah it won’t die, you can see from djozz’s test that it can handle a lot of current (probably thanks to no bond wires)
It just heats up too much and output starts dropping.

Jerommel
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Graph and numbers confirm to me it’s not really worth it to go beyond 4.5 Amperes.
Even 4.0 Amperes seems like a high enough maximum current.

Thanks for testing.

2Q19

Enderman
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Jerommel wrote:
Graph and numbers confirm to me it’s not really worth it to go beyond 4.5 Amperes.
Even 4.0 Amperes seems like a high enough maximum current.

Thanks for testing.


Yeah in a normal flashlight the peak will be at around 4A, more like djozz’s test.
Even at 3A you get msot of the performance.
This would be a great LED to swap into all those flashlights that have a 3A driver usually driving an XP-L HI at 1000lm.

I really wanted to know how far I could push it Silly Should I try make a 7Mcd optofire?

You’re welcome!

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cadmium
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What is the focal point relative to the Cree led? Do I need a shorter or taller spacer? I am having trouble focusing these and creating as tight of a spot as the xpe2 they replaced.

Output looks about the same intensity as before, but I still don’t have a light meter to verify. I am also not driving these hard enough as I am putting about 2.5A . Tint on the other hand is way better than a dedomed xpe2.

Flashlights are the nerf guns of the energy weapon world.

Enderman
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Did another test, this time with a small RLT collar.

The LED reached its peak sooner, at about 5.3A instead of 5.6, likely due to the additional heating of the die.
About a 2x improvement from the small collar.

Both graphs compared:

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So driving the CSLNM1.TG at 4A nets ≈90% of maximum performance, and is probably close to the maximum attainable in a flashlight due to thermal reasons.

Indeed interesting. Has this led emitter been tint and CRI tested? Big Smile

 

Cheers Party 

luminarium iaculator
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Enderman wrote:
Yeah it won’t die, you can see from djozz’s test that it can handle a lot of current (probably thanks to no bond wires) It just heats up too much and output starts dropping.

Well it won’t drop in first 20-30 seconds or so… Now some will say 20 seconds! That is to low… Real test is above 30 seconds… For me even first 5 seconds are more than enough to do job I need to do… This kind of action: Scan in front of me – nothing in range – cool down… When it lasts to 30 seconds it is super long scan Smile

Enderman
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luminarium iaculator wrote:

Well it won’t drop in first 20-30 seconds or so… Now some will say 20 seconds! That is to low… Real test is above 30 seconds… For me even first 5 seconds are more than enough to do job I need to do… This kind of action: Scan in front of me – nothing in range – cool down… When it lasts to 30 seconds it is super long scan Smile

Yeah I should also mention I do all my tests continuously, without letting the LED cool down at any time, I just keep increasing the current until there is no improvement.
None of that “X performance at turn-on” stuff.

For the record, I just did a test with the large RLT collar and got 708 (small collar max was 689) so 667cd/mm^2.
There is almost no improvement from the large collar over the small, it’s still ~2x intensity increase.

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Nice test Enderman! It shows once more that the phosfor of these leds even at these huge excitation intensities are still pretty far from saturation.

Enderman
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djozz wrote:
Nice test Enderman! It shows once more that the phosfor of these leds even at these huge excitation intensities are still pretty far from saturation.

Thanks Smile

Can’t wait for the boost HX to come out so I can buy and test it.
I would buy the CSLPM1 but shipping makes it expensive and it will just be obsolete for us when the boost HX becomes available anyway.

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