Hi
Anybody can make a recommendation for the above? I need a hotspot to be as small as possible for pinpointing in my inspection work. I know the hotspot can’t be as small as a laser pointer but smallest possible for the 18650 flashlight will do.
My ZEURAY zoomie just arrived (after reading from the forum here) but was disappointed as its hotspot is still too large.
Thanks
how far away are you having to see with it? a T20 has a fairley small hotspot, a sk68 for close up. most of the zoomable small lens flashlights will be around the same size
For a small spot from a lens light, you need a long focal length and/or a small LED. The longest focal lengths are in lights with very large lenses. For a long focal length in a conveniently sized light I recommend http://www.lightmalls.com/smil-shark-ss-a100-flood-to-throw-cree-xm-l-t6-3-modes-led-flashlight. What I got said UltraFire on it, but it was better than the other UltraFire I had.
If you modify or can get someone else to modify for you, you can swap in a much smaller LED. I can’t think of a zoomy that comes with a small LED and a long focal length. SK-58s have small LEDs but small short focal length lenses. The common small LED is the XP-E. The Osram Golden Dragon is a little smaller than that. There are a lot of Cree and other LEDs that are too small to be common in flashlights.
Lightmalls zoom looks tempting.
Odd text showing in the picture of the light:
I saw that. Not sure what the hell they are talking about.
You could always de-dome the Zuesray yourself to make the hotspot smaller, here’s an example in this thread.
https://budgetlightforum.com/t/-/30855
> Lightmalls “socket pan”
I suspect that’s like the “brown thing” on the ZeusRay
or this kind of wide plastic cover
to go over the wires. I’ve seen them now in several colors and diameters, always a disk or very shallow cone with a bit of a rim to pressure fit over an emitter board.
Buy the small sun zy c10
You will not regret it. Super small hot spot and very very intense also.
Can also be modded to throw 75+ kcd as well!
Yes, that does appear to have both a small LED (XP-E) and a long focal length lens, without needing to swap a small LED into a big light. I think that answered the original question.
Sorry everybody for not giving the complete info. My requirement is as below
At 1m distance from the wall the hotspot should be less than 7cmx7cm. The smaller the better
This is the current one I have from my unbranded Chinese zoomable flashlight which has an adjustable ring to focus the hotspot
Hi
I just posted my existing flashlight requirement. Is the hotspot smaller than 7cmx7cm at 1m distance from the wall?
Thanks
The smallest spot I have is around 5 cm. at a meter. It is a (PC Amber) Philips Luxeon LED in an UltraFire light that is similar to a Yezl t9. (The Yezl from CNQ is prettier, but I have had trouble with the drivers.) I can’t remember where I bought the UltraFire. It has a 38 mm. fairly thin lens. The Small Sun zy c10 probably just about does your 7 cm., but it is hard to say because they don’t give the focal length in the descriptions and the dome has an effect that is hard to estimate. If not, you are back to swapping emitters. It is not hard if you know how to solder wires.
If you really want it to focus as close as a meter, you might have to put an o-ring behind the lens or something to make it longer.
Wait a little while until the Uniquefire 1504 comes to the market. 
The hotspot is actually smaller. It’s about 6cm
a dedomed xpe is about 50 mm in the 1.99 wallbuys zoomies at a meter and a dedomed sk68 xre is bigger but still smaller than your 7cm x7cm requirement at a meter .
https://budgetlightforum.com/t/-/21936?page=1
http://www.banggood.com/CREE-XPE-Q5-600-Lumen-7W-Zoomable-LED-Flashlight-1x14500-p-907006.html
also all over ebay and all over the forum in the cheap cheap lights threads .
2 ~ 4$
You can have a lens to put on when you need a narrow spot like this cheapo mod on a C8.
With XP-E and 1m 1.5-2cm spot. Aprox 12-14cm at 8m. Driven with 3A 233kcd.
If it were me, I’d just replace the XM-L2 with an XP-G2. Only two wires to solder. If you feel daring you could de-dome the XP-G2 first too for an even smaller spot image.
You are pretty much on the edge of possibilities with the light you have already, 7x7cm at 1 meter can not be improved much. The Small Sun ZY-C10 already has the smallest led and a big lens to get at 6x6cm. If you have a XP-E2 led dedomed and build in the ZY-C10, you get get a bit smaller, I guess 4x4cm at 1 meter.
That is a type of modification we hadn’t talked about yet. If you have a lens from an old pair of binoculars or anything like that that can be made to fit, or order one from some cheap source, it will probably have a very long focal length and a very small spot. Lenses for most other purposes have much longer focal lengths than flashlight lenses do. If it fits well, it will be easier to swap than the LED and much easier than a dedome. The total light output won’t be good, but that doesn’t seem to be the main issue.
+1
We are naturally fixed on achieving a high light output and you need short focal length lenses for that. But this queastion is not about output, with a long focal length lens you may toss away 80% of the light but there's your small spot :-)