New VirEnce MCPCB for E17/E21/119/144/233U

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BlueSwordM
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@clemence, no, it’s not.

It’s actually rather close to production. DBSAR received it, and he is currently doing testing, and will be making videos about the final prototype after a few days.

My very own high current Beryllium Copper springs Gen 3:
http://budgetlightforum.com/node/67401
Liitokala Aliexpress Stores Battery Fraud: http://budgetlightforum.com/node/60547

iamlucky13
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adam7027 wrote:
C: too bad, that no tint mixing is possible between ‘L’ and ‘W’ group – some people would find 2700K to 4000K tint mixing a bit narrow

Tint mixing should still work ok since the “L” and “W” are driven by separate banks of 7135 regulators.

The firmware corrections to maintain constant brightness as the tint is adjusted will probably be off, but that should be a minor drawback.

clemence wrote:
I think its better to just make the lantern as designed. We can always start a GB for this MCPCB with poll later. I need at least 300pcs committed order to make it
Is the lantern still far from realization?

[Clemence]

No change is going to be made to the factory MCPCB at this stage. It will ship with Samsung LH351D’s.

A group buy list would be a good way to handle this proposal. It seems prudent to wait until the lantern actually starts shipping to start the list though, so potential buyers can decide if they are happy with the stock emitter.

The_Driver
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Yes, it makes sense to wait until the lanterns are being shipped. I think that this is definitely worth it though. It gives owners a large flexibilty regarding the CCT range of the lantern and  Clemence might be able to sell a lot of LEDs (and pcbs).

SKV89
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The_Driver wrote:

Yes, it makes sense to wait until the lanterns are being shipped. I think that this is definitely worth it though. It gives owners a large flexibilty regarding the CCT range of the lantern and  Clemence might be able to sell a lot of LEDs (and pcbs).

Maybe Clemence might work with DBSar to post the group buy in the OP of the BLF LT1 thread so people know about it. Better yet, if he can get the groupbuy news included in the PM when they notify the people in the interest list when the lantern is available. With 2,000+ buyers for the LT1, we should be able to get 300+ orders for the E21A board.

BlueSwordM
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So, took this picture yesterday, and found that this light is using flat LEDs.

Could this be Optisolis, E17A/E21As, or a Luminus MP3030?

My very own high current Beryllium Copper springs Gen 3:
http://budgetlightforum.com/node/67401
Liitokala Aliexpress Stores Battery Fraud: http://budgetlightforum.com/node/60547

clemence
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BlueSwordM wrote:
So, are these Nichia Optisolis or E17/E21As, or a Luminus LED?

I took this picture yesterday.

!{width:40%}https://i.postimg.cc/X43BFxWR/IMG-20190816-154050.jpg!

Looks E21A to me

[Clemence]

BlueSwordM
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Yeah, suspected it was the case.

This light is rated at 95+CRI with an R9 rating of 85, along with being very efficient at its power rating for such a high CRI light.

Interestingly, this isn’t using a run of the mill aluminium MCPCB.

From what I can gather, they are using a special compound like yours to gain superb thermal conductivity using only the power pads on the LEDs for thermal transfer.

My very own high current Beryllium Copper springs Gen 3:
http://budgetlightforum.com/node/67401
Liitokala Aliexpress Stores Battery Fraud: http://budgetlightforum.com/node/60547

clemence
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Aluminum oxide or nanoceramic based MCPCB has been around since 2004. The advancement in performance keeps improving. Smaller, finer closed pores oxide is the goal. Today, the thinnest is at 3um thick. But 10um is the most consistent we can get from mass produced boards. There’s a new development to start using copper oxide on copper base to get even higher performance.
In parallel, aluminum nitride based PCB also getting cheaper especially the less pure 170W/MK substrate which is already very high. 250 W/MK AlN is at the high end spectrum competing with BeO substrate.

[Clemence]

xenotar80
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SKV89 wrote:
The_Driver wrote:

Yes, it makes sense to wait until the lanterns are being shipped. I think that this is definitely worth it though. It gives owners a large flexibilty regarding the CCT range of the lantern and  Clemence might be able to sell a lot of LEDs (and pcbs).

Maybe Clemence might work with DBSar to post the group buy in the OP of the BLF LT1 thread so people know about it. Better yet, if he can get the groupbuy news included in the PM when they notify the people in the interest list when the lantern is available. With 2,000+ buyers for the LT1, we should be able to get 300+ orders for the E21A board.

If an E21A board came out for the lantern, i’m going to have to up my order for more lanterns Big Smile

Agro
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clemence wrote:
Aluminum oxide or nanoceramic based MCPCB has been around since 2004. The advancement in performance keeps improving. Smaller, finer closed pores oxide is the goal. Today, the thinnest is at 3um thick. But 10um is the most consistent we can get from mass produced boards. There’s a new development to start using copper oxide on copper base to get even higher performance.
In parallel, aluminum nitride based PCB also getting cheaper especially the less pure 170W/MK substrate which is already very high. 250 W/MK AlN is at the high end spectrum competing with BeO substrate.

[Clemence]


I assume 170W/mK AlN PCBs are still costlier than 10µm oxidized Al?
ADDED:
BTW, I don’t see a need for that at the moment but out of curosity I searched for 250 W/mK AlN PCBs and found none. Would you mind pointing us at the manufacturer?
aswang
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Yes. e21A mcpcb for LT1 please.

djozz
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It is a pity that the Optisolis does not go down to 2000K, it makes just more sense to use a handful of midpower leds for a lantern than the current 8 high power leds. But changing the lantern to 2700K/6500K Optisolis (I would choose 2700K/5000K btw) for me would probably not make enough difference to go through the trouble and cost to do the mod.

iamlucky13
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djozz wrote:
It is a pity that the Optisolis does not go down to 2000K, it makes just more sense to use a handful of midpower leds for a lantern than the current 8 high power leds. But changing the lantern to 2700K/6500K Optisolis (I would choose 2700K/5000K btw) for me would probably not make enough difference to go through the trouble and cost to do the mod.

Some users would also not like the fact that the tint would be above the BBL at the cool end of the CCT ramp.

I think you know, but others may not, that Optisolis is designed to mimic standard illuminants. At 5000K and above, the standard illuminants are based on various daylight conditions, which have 0.002 to 0.003 positive DUV.

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