Emisar D18 introduction

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Agro
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Hank, there are some important things mentioned separately in this thread. I’d like to bring them together because they are actually so closely related…

High-CRI SST-20 variant tends to polarize people. Some love it and some hate it.
The latter really complains about one thing: the tints tend to be green at low currents. Even very green.
I’ll assume for a while that D18 comes with a driver that regulates current at medium and/or low levels. Just like every Emisar so far.
If that medium/low current is split between 18 emitters – SST-20 is likely to become green. Very green.
That can be solved in multiple ways:

  1. change LED to a less green one
    • there is no real candidate
  2. strive to get least-green tints
    • is it going to work well?
  3. implement a dual channel driver – use only a single LED at low/medium modes (and PWM it from at least 2A)
    • likely a major change
    • hard to get smooth ramp?
  4. don’t regulate current, make a pure FET driver
    • efficiency suffers
  5. mix LEDs of different CCTs
    • tint mixing makes combined output rosier. The wider tint difference the larger the effect
    • since CRI95 SST-20 is available from warmish-neutral to warm – a mix is going to be warm and you won’t be able to offer neutral
    • CRI of a mixed beam is going to be a little lower

I think that the last option is the least problematic one. TK made more detailed proposal. I support it.
And I suggest combining it with #2.

Hank Wang
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gregor wrote:
Do you know when this FL will go on sale and what will be exact price?
Thank you
Ready for pre-order, ship before the end of March.
https://intl-outdoor.com/emisar-d18-318650-14000lm-flashlight-p-939.html

https://intl-outdoor.com, Noctigon, Emisar, flashlight components.

beastlykings
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Thanks Hank! Ordered.

hodor
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With Anduril as well! Thumbs Up Beer

Hank Wang
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Lux-Perpetua wrote:
Hank, maybe there’s room for a bit improvement on your website. Is there any way to include the tracking number when your customers log on into their account on Int’l Outdoor and open up their recent purchase order? I always feel bad about bugging you via e-mail just to ask for the tracking number once my order has been shipped. Maybe this could save you a lot of e-mail replies. Wink
Thanks for your suggestion. The thing is, once the order is marked as shipped, it only means that the package leaves our office, and it will take 2~3 days for the shipper to handle the packages, then the shipper will advise us the real “tracking number” at this time. That means, we do not have the final tracking number when the order is marked as “shipped”, that is why we always need to tell the customers
the tracking number by emails. But yes, we will think of a way to solve this problem.

https://intl-outdoor.com, Noctigon, Emisar, flashlight components.

mihlit
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Nice Smile
What bins are those leds? FB4 and HB4 or something different?

Hikelite
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Agro wrote:

  1. mix LEDs of different CCTs
    • tint mixing makes combined output rosier. The wider tint difference the larger the effect
    • since CRI95 SST-20 is available from warmish-neutral to warm – a mix is going to be warm and you won’t be able to offer neutral
    • CRI of a mixed beam is going to be a little lower

I think that the last option is the least problematic one. TK made more detailed proposal. I support it.
And I suggest combining it with #2.

Mix different CCT without voltage matching you suggest? I mean you make a thoughtful suggestion but then omit such an important aspect.
Current goes to the path of least resistance, even if it would not be direct drive, yet it is direct drive, so some LEDs will get more current than others, one has to match the voltage bins for that, which is not as simple as it sounds.
Then how is the beam at short distances, it will be visibly mixed, which for me is unpleasant to see various CCTs.
You are thinking of situations where such mixing is done under like 50-75% frosted domes where you don’t even have a concentrated beam and are heavily diffused with a lot of optical losses.

The Groundsman
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Ordered sst20 4000k
Can’t wait.

What’s become of the remaining m43’s?

contactcr
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Hikelite wrote:
Then how is the beam at short distances, it will be visibly mixed, which for me is unpleasant to see various CCTs. You are thinking of situations where such mixing is done under like 50-75% frosted domes where you don’t even have a concentrated beam and are heavily diffused with a lot of optical losses.

In practice this is not true. Most TIRs (Carclo and Ledil) I have tried mix the colors so well even at 1 meter you could not see various CCT. These individual TIR used in this light may not blend as well but that is yet to be seen.

Hikelite
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contactcr wrote:
Hikelite wrote:
Then how is the beam at short distances, it will be visibly mixed, which for me is unpleasant to see various CCTs. You are thinking of situations where such mixing is done under like 50-75% frosted domes where you don’t even have a concentrated beam and are heavily diffused with a lot of optical losses.

In practice this is not true. Most TIRs (Carclo and Ledil) I have tried mix the colors so well even at 1 meter you could not see various CCT. These individual TIR used in this light may not blend as well but that is yet to be seen.

Which one of those exact optics have you used?

Pete7874
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Hank Wang wrote:
Ready for pre-order, ship before the end of March.
https://intl-outdoor.com/emisar-d18-318650-14000lm-flashlight-p-939.html

Are the Samsung 30Q cells you are offering on this page button tops?
Tom Tom
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Agro, we have been told that this has two banks of 7135. 1 and X14.

Running from the X14 bank, the 18 LEDs should be being PWMed or continuous at about 270 mA each. Or 290 mA if both banks are used, which would be my guess.

Is that not sufficient to allay your concerns ?

Have started saving and will buy, as soon as the 18350 tube is available.

Meanwhile my MF01 (second edition, Nichia, pristine) is available, UK only offers accepted.

DB Custom
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I am curious, Tom Tom, which emitter will be your choice in this?

I had the 4000K 95CRI in the cart just moments ago but realized there was no short tube listing yet… also waiting.

contactcr
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Carclo 10621 (Luxeon V2 4K and 5K)
Ledil ANNA-40 (LH351D 4K and 5K)
Ledil CUTE-4-M (Luxeon MZ 3000K 5700K)

I will try soon BLF Q8 with LH351D 3K and 5K

DB Custom
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Even in a Sofirn C8F with a triple reflector, 3 different tints blend very close to the source. Wink

contactcr
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Is that price correct for 3× 30Q’s? $35.80?

Agro
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Tom Tom wrote:
Agro, we have been told that this has two banks of 7135. 1 and X14.

Running from the X14 bank, the 18 LEDs should be being PWMed or continuous at about 270 mA each. Or 290 mA if both banks are used, which would be my guess.

Is that not sufficient to allay your concerns ?


No, by far. Maukka’s test:
http://budgetlightforum.com/node/62195

4A per emitter is great, 2A is fine, less gets worse.
mortuus
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contactcr wrote:
Is that price correct for 3× 30Q’s? $35.80?

seems a bit high ,shouldnt cost more then 5-6$ each even if button tops.. ?

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contactcr
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Agro wrote:
No, by far. Maukka’s test: http://budgetlightforum.com/node/62195 4A per emitter is great, 2A is fine, less gets worse.

I have a solution! Run ~3A to each emitter and when you ramp up and down it turns on/off one emitter at a time from the inside out in a spiral pattern.

komeko
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According to my theoretical calculations, every LED will get 2.6A in turbo. The whole will absorb about 160W. I have a question for Hank, is the weight given on the site with or without packaging, whether with or without batteries?

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contactcr wrote:
Agro wrote:
No, by far. Maukka’s test: http://budgetlightforum.com/node/62195 4A per emitter is great, 2A is fine, less gets worse.

I have a solution! Run ~3A to each emitter and when you ramp up and down it turns on/off one emitter at a time from the inside out in a spiral pattern.


Driver design nightmare. Sick

Texas Ace Lumen Tube and JoshK Sphere calibrated with Maukka lights

Click this to go to signature links. I'm still around, just not reading many new threads.

DB Custom
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Not to mention the wiring schematic…

(think in the voice of USS Enterprise Chief Engineer Scotty), “I’ve got her patched together Captain and I’m giving er all she’s got but I don’t know how much longer she’ll hold together!”

A good tint mix would look awesome under a UV though…

contactcr
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Ok so we have spiral ramping and down firing UV aux LEDs? awesome. I’ll buy it

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Hank Wang wrote:
Lux-Perpetua wrote:
Hank, maybe there's room for a bit improvement on your website. Is there any way to include the tracking number when your customers log on into their account on Int'l Outdoor and open up their recent purchase order? I always feel bad about bugging you via e-mail just to ask for the tracking number once my order has been shipped. Maybe this could save you a lot of e-mail replies. ;-)
Thanks for your suggestion. The thing is, once the order is marked as shipped, it only means that the package leaves our office, and it will take 2~3 days for the shipper to handle the packages, then the shipper will advise us the real "tracking number" at this time. That means, we do not have the final tracking number when the order is marked as "shipped", that is why we always need to tell the customers
the tracking number by emails. But yes, we will think of a way to solve this problem.

Okay, that makes sense. Thanks for your quick reply. Thumbs Up
I just ordered the D18 with SST-20 5.000K. I can’t wait to get it into my hands. Smile

On a side note: It seems most people on TLF order the khaki sand version.

mattadores
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Hank,

1- is the $99 usd price a pre-order/early order price only?
2- if so, how long will you be running the $99 price for?
3- what will the regular price be once the $99 price changes?

Crying I needs one but this is also new summer tires month…
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@mattadores, if you do not have the money to buy the light, just don’t Smile

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hodor
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mattadores wrote:
Hank,

1- is the $99 usd price a pre-order/early order price only?
2- if so, how long will you be running the $99 price for?
3- what will the regular price be once the $99 price changes?

Crying I needs one but this is also new summer tires month…

I don’t believe he’s ever done pre-order/early order prices so suspect $99 will be the price for a while.

hodor
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Lux-Perpetua wrote:

On a side note: It seems most people on TLF order the khaki sand version.

If I was to order one it would be the khaki sand version. Not because I especially like the colour but more because black is too ubiquitous and having a different colour makes it feel more special and unique.

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Sand as a change of pace.

mattadores
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BlueSwordM wrote:
@mattadores, if you do not have the money to buy the light, just don’t Smile

@BlueSword,

I see your very sound logic and I raise you a quote from lux-perpetua lol Facepalm

Lux-Perpetua wrote:

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