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

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LouieAtienza
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Enderman wrote:
LouieAtienza wrote:

The surface area of said spherical cone comprises about 13.4% of the total surface area of the hemisphere, yet accounts for ~25% of the light. So ~75% of the light comes from the remaining ~86.6%. So if we “weighed” the luminous intensity coming from said 60 deg. cone, which is between .9-1 relative luminous intensity (I’ll guesstimate on average .96 at any point on that surface) and multiply that by .134 I get a result of .1286. Guesstimating the average luminous intensity of the remainder, using a typical chart, between 0 and .9, I’d say about .6. So multiplying .6 by .866 gives me .5196, which is just about 4 times the result I got from the top section. I’m sure the actual equation is a bit more complicated than this (and I hadn’t done calculus or differential equations in about 26 years) but intuitively it seems to jibe now.

It also makes sense why an RLT collar at 33% efficiency would potentially double the luminous intensity of the light coming out its aperture (given a 30 deg. half angle aperture).

While impractical, it also seems clear to me that given a luminous intensity chart for a given LED, there would be an optimal aperture angle for the RLT factoring in the luminous intensity graph, meaning there is an ideal focal length (ratio).

Of course now for a reflector, even a precision electroformed one with the most reflective coating is only approaching 90% efficiency, so that boosts the percentage of light from said 60 deg. cone to about 27% of total light output, and likely more given a typical flashlight reflector. Which makes me ponder that there is an “equilibrium angle” where the light coming from the top cone is equal to that of the lower section with the included efficiency factor. Not clear to me yet what use this would be of, but it should generate the most OTF lumens.


It’s just integration, it’s easy.
http://budgetlightforum.com/node/65922

2) there is no optimal aperture, the more light that a wavien collar collects the less lumens are output and the more intense the light becomes.
For highest efficiency you use no collar, for highest candela/mm^2 you use a collar that covers almost 100% of the hemisphere.
60 degree opening was just chosen as a good middle ground by wavien.

3) silver coatings are 98%, aluminum 90-95, and dielectric coatings can get to 99%+

4) the highest OTF lumens are with a mule and no optic. For even highest efficiency, remove the front protection lens too, that will get another 1-3% light output.

1. I should pull out my old textbook… Just don’t have it in me right now.

2. There would be a aperture that gave the most output given a specific emitter. Basically best blend of distance and throw.

3. Yes I’m aware but those coatings are not typically used due to their fragiity. The “standard” coating with a good durability is rhodium which I believe is at around 90%. I’m sure the cast and milled ones we use typically are not as efficient.

4. Yes but we don’t buy White Flats to make mules…

The_Driver
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Rhodium has around 75% reflectivity in the visible range.
Dichroic coated glass reflectors have the highest reflectivity. This is what Wavien used.

Enderman
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Yeah, the only people using rhodium are the guys that make short arc flashlights because the UV degrades other coatings.
Protected aluminum is the standard coating for non-lamp applications, that’s what I bought.

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Rhodium is also good if you like to clean you reflector with a cloth (for whatever reason) because it’s rather hard. You still need to be careful though.

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Looks like Mountain Electronics has some Osram Flat White spacers for sale now. Still plan to buy Hoop’s because his are going to come with shim stock for adjusting the beam profile. Mountain Electronics may get me by for a while.

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Heads up, the c8 style 30-30 gaskets I grabbed from mountain are for the smaller reflector hole. Like on the c8 op reflector. Wasn’t able to use them as is.

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194kcd with CSLPM1.TG in a C8 driven at 7.5A with LD-4A driver.

Interesting result. Almost the same as my C8 with black flat in that made 196kcd but with noticeable bigger hotspot.

CSLPM1.TG / Black flat

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Enderman
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But you weren’t driving the black flat at 7.5A were you?

djozz
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BobbyMK wrote:
194kcd with CSLPM1.TG in a C8 driven at 7.5A with LD-4A driver.

Interesting result. Almost the same as my C8 with black flat in that made 196kcd but with noticeable bigger hotspot.

CSLPM1.TG / Black flat


So that is also double the lumens, so 1300-ish? Nice!

In the meantime I wished for a 5000K version of the NM1 and the PM1. I plan to use the NM1 in the GT-micro but I’m also contemplating giving in a few lumens by using a dedomed XP-G2 S4 3D instead.

BobbyMK
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Enderman wrote:
But you weren’t driving the black flat at 7.5A were you?

The black flat is driven at about 4.5-5A with full VTC6. I must say that this led gave me nightmares focusing it and i am not even sure that it is perfectly focused but its the best result ive got so far and decided that 196kcd is enough.

I must add that the black flat is soldered by me on a 3535 board and the PM1 is on 3030 board bought from Led4Power. So almost certainly i lose performance on the black flat just because of my unprofessional soldering job with the black flat Big Smile

djozz wrote:

So that is also double the lumens, so 1300-ish? Nice!

In the meantime I wished for a 5000K version of the NM1 and the PM1. I plan to use the NM1 in the GT-micro but I’m also contemplating giving in a few lumens by using a dedomed XP-G2 S4 3D instead.

Should be close to double lumens for sure, at least from what ive seen from few tests here including yours.

5000k would be nice but i do not mind CW leds so its fine for me. I am not familiar with the micro GT other than seeing it on pictures but i had have dedomed S3 3D and it was very nice warm tint with no green hue whatsoever, it might be nice if you want warmer tint compared to the NM1.

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Need some explanation from someone more intelligent than myself. I installed a 2mm2 Osram in a Cometa and when I was on max power the light dropped to the lowest setting within 5 seconds. Can someone explain what is happening? Put the XPL-HI back in it and it was fine.

Tom E
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Quick guess - Cometa has a low temp threshold, and the Osram is lower Vf than a XPL HI, so, the amps goes way up - probably too much for the LED anyway, and therefore the heat jumps way up fast, tripping the temp threshold which the XPL HI either can't do or takes longer to do.

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Other guess: I have had problems with the 2mm white flat in combination with FET+7135 drivers (like in the Cometa). Perhaps it has something to do with the extreme low voltage (lower than any white led before). It may even have killed the 7135 chip but that may also have been accidental.

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Having problems with 7135s or linears? Switching full regulation is a Innocent way. You may also want to try a low current cell or avoid charging cells to the max. Try and measure first, avoid problems.

Did anyone measured an effective max current value for the CSLPM1.TG in a C8?

 

Lothar
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BobbyMK wrote:
194kcd with CSLPM1.TG in a C8 driven at 7.5A with LD-4A driver.

Interesting result. Almost the same as my C8 with black flat in that made 196kcd but with noticeable bigger hotspot.

CSLPM1.TG / Black flat

!https://i.imgur.com/1Ai1Xae.jpg!


I still can’t figure out how a rectangular gives such a perfect perceivable hotspot. I though you would have seen pie slices of varying intensity Flat Stare
djozz
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Lothar wrote:
BobbyMK wrote:
194kcd with CSLPM1.TG in a C8 driven at 7.5A with LD-4A driver.

Interesting result. Almost the same as my C8 with black flat in that made 196kcd but with noticeable bigger hotspot.

CSLPM1.TG / Black flat

!https://i.imgur.com/1Ai1Xae.jpg!


I still can’t figure out how a rectangular gives such a perfect perceivable hotspot. I though you would have seen pie slices of varying intensity Flat Stare

You must see it as this: in a reflector light every spot on the light source (the die) is projected smeared out in a circle around the center of the hotspot. So the center of the hotspot receives light from the center of the die, and any circle at a given distance from the center of the hotspot receives the light that comes from the corresponding circle around the center of the die, but smeared/evened out. So the shape of the light source is irrelevant, it will be projected as an sum of evenly illuminated “circles”. This is sort of what happens to the hotspot, but the corona can do things a bit different it seems that in contrast is a bit more dependent on the die shape, like showing “petals” when the die is square.

This is the best I can explain this with the limited english that I know, explaining technical things in a non-native language is pretty challenging.

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Thanks, I think it makes sense Smile

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Just received some goodies from L4P…
So my B158B now does 290kCd @ 10m with its 1mm² WF and LD-4A driver set to 4,5A

And my Cometa does 285kCd @ 10m with the same setup.

I just love the clean beam of the Cometa. I’ve coated the black plastic washer with some paracord fumes a while ago and it does make some difference !

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Marc E
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X3 wrote:
…I’ve coated the black plastic washer with some paracord fumes…

Looks good, how do you do this? I don’t know what paracord fumes are.
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-X3-
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thijsco19 wrote:
https://www.youtube.com/watch?v=Nksb2RCNsF0&t=5m40s

This maybe??


Yeah, that’s the idea…
I burnt some paracord and I placed the washer right in the black fumes to allow a thick coating to depose on it.
My wife hated me for doing that in the living room of course !

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Marc E
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thijsco19 wrote:
https://www.youtube.com/watch?v=Nksb2RCNsF0&t=5m40s

This maybe??

I found that fascinating!
X3 wrote:
Yeah, that’s the idea…
I burnt some paracord and I placed the washer right in the black fumes to allow a thick coating to depose on it.
My wife hated me for doing that in the living room of course !
Lol, what else got coated?
Does it rub off easily?
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Marc E wrote:
thijsco19 wrote:
https://www.youtube.com/watch?v=Nksb2RCNsF0&t=5m40s

This maybe??

I found that fascinating!
X3 wrote:
Yeah, that’s the idea…
I burnt some paracord and I placed the washer right in the black fumes to allow a thick coating to depose on it.
My wife hated me for doing that in the living room of course !
Lol, what else got coated?
Does it rub off easily?

Yes, a little scrub will remove it easily

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X3 wrote:
Yes, a little scrub will remove it easily
Thanks Smile I’ll stop derailing this thread now.
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I modded my Emisar D4 with 2 1mm^2 and 2 2mm^2 white flats.

These emitters’ voltages make them perfect to put in parallel with each other. Emitters in parallel always have the same forward voltage, so one can predict the relative currents in each emitter by looking at their voltage vs current plots. From djozz’s measurements: if, say, 6A goes through the 2mm^2 LED then 3A will flow through the 1mm^2 one.

It took me a couple tries to get all 4 emitters centered with no shorts. It pulls 19.5A with a VTC5A measured using a clamp meter. I measured 46kcd.

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- X3 –

I have a spare Jaxman Z1 (Cometa) I really want to put a flat white in with a Led4Power driver. How did you get the driver to fit?

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Yourrid wrote:
- X3 –

I have a spare Jaxman Z1 (Cometa) I really want to put a flat white in with a Led4Power driver. How did you get the driver to fit?


The Cometa takes a standard 17mm driver, so the L4P LD-4A fits without modification Smile
The sweet spot for the 1mm² WF is 4,5A while the 2mm² version should be around 7A.
I’ve swapped a 2mm² in mine 2 days ago and adjusted the current to 6A and get a nice 220kCd and a funny wide screen beam.

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X3

Dang man! I never got a Cometa because I already had 3 Jaxman Z1’s, but they take a 22mm driver. I need to find a 22mm driver set at 4.5A with a bleeder for an illumination tail cap. Maybe Led4Power will come out with a larger diameter driver…

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-X3- wrote:

The sweet spot for the 1mm² WF is 4,5A while the 2mm² version should be around 7A.

From what I see in the published data by luminarium iaculator, CSLPM1.TG maxes at ≈10A. Considering the CSLNM1.TG maxed at ≈5.75A in led4power's tests, for the same relationship the 2mm² could be set at 10A × (4.5 / 5.75) = ≈7.826A.

 

scr79423
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does anyone know at 2A, how many lumens does the OSRAM CSLNM1.TG LED make?

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