【convoy】H4 and B35AM options are updated

I agree - a highly efficient driver (and LED that is efficient for its output/tint) would be ideal but I also really like this idea of a Convoy headlamp with 7+1 moonlight special for a budget headlamp. Add in Anduril and this could sell like hotcakes.

He actually recommended bins way below the BBL.

This gives a huge advantage because the tint will stay below the BBL, thus being pretty, at all levels, even on the low modes. Recently I’ve organised a group buy for a very-high-cri custom headlamp for some of my friend’s, not real flashoholics or tint snobs, more regular users. Four of them got the 4000K CRI9080+ version, the tint lands on the BBL at on the 300-700lm modes and becomes subtly rosy at 1200lm, so theoretically it should be perfect. Guess what, no one of likes it. They say a 300K warmer (and positive duv) light made the custom look green at any level, and so did the slightly rosy XPL-HI 5D of the D4. It also was noticeably green at the lower modes. And eg. I use my light 80% of the time on the low or medium levels.

Positive duv can be quit yellow at 3000-4000K CCT’s which makes the green colours look more intensive, while negative duv does not and can make wood look rosy which doesn’t look really natural.

The 219C at 5000K has a duv of about +0.003 and it’s horribly lime green, not natural at all.

I made the same observations. A rosy tint does make white look whiter than a positive duv equivalent at the same CCT.

It’s super hard to get these ultra rosy tints at 1A.

Not only are they less bright(no problem at all for me), but absolutely no distributor, or most manufacturers make them unless on a large custom order(5000pcs), and that is without being able to choose flux bin at all.

THIS. It’s a unicorn, it basically doesn’t exist. There is a vocal minority being too particular about this. If people were so repulsed by slightly above BBL lights no one would have any flashlights at all. I probably have 20-30 lights with various emitters and only a few are below BBL at high current even. I want my lights to be near BBL like everyone else but we need to be realistic.

Actually even at higher temps, below duv makes a big difference, just not as much as with warmer tints. For example, I have a huge collection of Cree 5A/5D tint flashlights and they are either below or far below the BBL with duv probably –0.005. If you compare the 4000k 5A/5D tint with a 4500k Cree 4B/4C (above the bbl) tint, they look about the same temperature but whites look whiter with the negative duv 4000k than the positive duv 4500k and much more pleasing tint to boot.

curious, has a group buy ever been done with/thru Simon? Seems like he cares a great deal about end users needs and wants, and knows FLASHLIGHTS. I think the interest in a Convoy H1 headlamp with special emitters and those great UIs would be off the chart.

Yeah.

No group buy needed though.

We just need an SST-20 4000k H1, and my perfect headlamp will be right in front of me.

Headlamp sounds great. Once the firmware is changed to the new UI and we get good neutral, maybe high cri, I’ll pick up a few.

GB will sell H1 soon ,and there’s a good price i think

Thanks Simon!

Do you already know what optics you would like to use? It would be great if it was compatible with Yajiamei optics.
For example with this:
Frosted Yajiamei optics

This is PERFECT EDC flashlight of 21 century: https://translate.google.com/translate?hl=lt&sl=ru&tl=en&u=http%3A%2F%2Fforum.fonarevka.ru%2Fshowthread.php%3Ft%3D31892
If you can build something very similar only for like 30$ or just get right driver :https://translate.google.com/translate?hl=lt&sl=ru&tl=en&u=http%3A%2F%2Fforum.fonarevka.ru%2Fshowthread.php%3Ft%3D37158 I”ll will buy it ;))

Did I get it right?

the first link talks about a headlamp with Hi CRI XHP50+ Carclo 10140

the second link is a H02 and H03 with a custom driver?

I’m assuming “kk” is tap, and “dk” is hold…

I see everything rhymes with AK :slight_smile:

cheeky breeki

I like the frosted lens idea! Will it be available to buy on your aliexpress shop?

Um. I don’t decide which one yet. It is easy to buy them in China. I will select the appropriate one.

it’s easy to find them in China ,what degree do you need?

Then, my suggestions for 20mm × 12.8mm Yajiamei optics:

Clear surface:

- all of them should be checked for each unique LEDs to be used with, because beam artifacts would be visible depending on light emitting surface shape and textures

- also, less suitable to mix tint of the LED

- 5 degree variant gives the most throw

  • negligible spill outside the hotspot, most of the light is focused in the hotspot (or there is a small corona as well)

Beaded surface:

- handles the different LED emitting surfaces very good, mixes tint better

- negligible spill, but it is a bit more than spill of the clear surface, also, slightly textured

  • my personal choices: 10 or 15 degree gives very good throw; 25 degree is the best for general usage; 38 degree is a bit floody, above that, definitely floody, but still defined hotspot

Frosted surface:

- handles different LED emitting surfaces very well, even the worse ones (best tint mixing ability)

- much more light is present in the spill

  • my personal choices: 15 degree gives a nice, conical profile gradually strengthening hotspot, 30 degree is already noticeably floodier; 85 degree feels like an extreme flooder (almost no hotspot perceived)

I regularly use Yajiamei optics in S2+, so my recommendations would go for:
flashlight: 10 and 25 degree beaded, 15 degree frosted
headlamp: 38 degree beaded, 30 degree frosted (also, 60 degree beaded and 45 degree frosted, if more flood is required - e.g. for close range hand work)