[Optisolis/E17A/E21A] Jetbeam Jet-µ

Efficient buck/boost cc drivers that can be readily bought for e-switch lights seem non-existent unless you build it yourself or you’re willing to sacrifice an expensive light which has one. One option might be loneoceans’ boost driver driving triple in series if somebody can make those available with appropriate e-switch firmware.

But for the meantime, I personally wouldn’t mind an FW3A with triple E21A running on just the 1+7 7135 chips with FET disabled or removed. IMHO It would still be totally worth it despite the added heat and loss of output and efficiency. But that’s coming from an E21A fanboy whose willing to sacrifice everything else for these emitters. I blame Clemence for that :stuck_out_tongue: .

You’re welcome and thanks for your support. I also keep 3000K and 6500K Maukka calibrated Jetusolis for my reference lights.
Next project in the making …

- Clemence

Any news about configurable multi-emitter Optisolis floodlight PCBs? :partying_face:

No news for now.

- Clemence

I almost forgot, that Optisolis will be available as COB as well, maybe then there is less need for that kind of solution, but a decent, moderately frosted optic could be useful for that.

COB Optisolis does better job to mix all those weird asymmetric beam from each LEDs in a compact package. But it doesn’t do few things:

- Multi CCT setup

- Low voltage. 36V is harder to implement into portable applications.

  • Seamless daisy chain light panel

You mean with the COB, we wouldn’t be able to mix say 2000k with 3000k?

COB Optisolis has only single CCT options. There’s another interesting new product from Nichia, a matrix of 2700K - 5000K E21A in COB form. But it has the same 36V voltage and currently limited to only R8000.


http://www.nichia.co.jp/en/product/led_search.html?op=cond=whatsnew='tunableled'

- Clemence

Got my 2 Jetusolis’s in 5000k in! One appeared slightly cooler than the other, so I went with the warmer, and gave the cooler to my brother and his wife.

First impressions are that it appears much cooler than 5000k, more akin to the 5700k Nichia 219B R9050 I had on my old Jaxman E2. I wonder if a lot of that is attributed to the full cyan region of the spectrum?— I would guess so. Very pure looking. I can definitely tell it’s slightly green, but it does render reds really well regardless. Tint deviation within beam seems small in general, thanks to its floody nature, subjectively it looks like the outer edges of it are warmer and greener than the center, but that could be because there’s less lux on the outer edges.

I think I’ll try it with a green minus 1/8th filter.

There’s small variation between LEDs, Maukka confirmed that the difference is not that large. It’s mostly cause by variation in optics. I tried my best to find relatively narrow beam with as good as possible uniform beam. I ended with hundreds of them. Just to let you know, even those 30° optic in your light was individually binned. Only 60% (so far) of the 30° optics ordered for Optisolis produce even beam. With optics > 30° you will get very even beam but perhaps not usable for most people.
As for the greeniness, compared to E21A it is greener. Compared to sw45k 219B it will be even worse. But keep in mind that sunlight is actually has green tint too, sometimes way greener than Optisolis. I remember somewhere in IRC Maukka posted two pictures of daylight (snowy winter) measurements with green tint very much like Cree (or worse, I forget).

Tip: If you want to make the beam better and don’t mind with more spill try this simple trick….
get a fine (#320 grit or higher) silicone carbide powder or make your own (soak a sandpaper in gasoline). Wet the tip of a small brush with a liquid detergent, dip it to the SiC powder and brush the lens in all directions. You don’t have to remove the lens from the flashlight to do so. Rinse it in a running water. Voila! clean floodier beam.

- Clemence

The beam I’m perfectly fine with, right now it’s just the green. I do know that sunlight is on the green side of BBL, but I also tried the Optisolis out on some patches of dirt and leaves last night, and it didn’t seem to be too sunlight-looking. A lot of that might be the ghastly appearance of just having lower lux on target though. I’ll get to compare better today though.

I always thought I liked sunlight too but later realized that sunlight is slightly above the BBL and is greenish compared to my A and D tinted Cree emitters. I guess the high lux from sunlight makes even above the bbl tint look pleasant and warm. At night time so far I find the ROT66 with 219B 9080 with much below the BBL 4500k on turbo most reminiscent to warm afternoon sunlight. Above the BBL 5000k and 5700k lights make vegetation or anything look very gloomy and depressing.

Would be very interested in Maukka’s numbers of the Jetusolis.

I tested a couple Jetusolis. The 5000K ones were very tightly grouped.

That does at least confirm my subjective impressions that it was a little cool of 5000k. I actually prefer that, as it puts it closer to sunlight than not.

Overcast day, so can’t compare patches of sunlight to the Optisolis yet. :frowning:

Got a chance to compare the 5k Optisolis to midday sunlight. Tested on red bricks, mud and leaves, bark, white printer paper and much more.

The optisolis is slightly warmer, which is a given, but it is definitely slightly greener than sunlight to my eyes. I will put a filter on it.

So far I only hear excessive green tint Jetusolis from you. I think Jetusolis is not the right choice for you. Better go with JetuE21A for more traditional and well accepted tint flavour. I can upgrade it to JetuE21A if you want. PM me if you’re interested.

- Clemence

Thanks for the offer. It doesn’t take much to put a filter on it, and I like the idea that the Optisolis fills out the cyan region. I ordered the Optisolis just to have a benchmark for this kind of ultra high cri lighting. I don’t think the lee filter will degrade the cyan part of the spectrum.

I already have my ROT66 219B SW45K R9080 and ROT66 SST20 4000k + 804 filter for pretty lighting.

Got mine Jetusolis P9 5000K :slight_smile:

Here is beam shot of: Jetusolis 5000K (right), E21A sm503 (left), Sofirn C01 Yuji 5600K (top):