Random idea for multi-die LED flashlights

That was in full focus. I view this idea as best used in a zoomie. In full focus - use just one LED. Move the optics some and the dark rings are gone, you end up with smooth and bright flood or intermediate beam.

I’m not really sure…any chance that Samsung LH309A would be suitable?

Random idea:
Would XQ-E HI surrounded by 8 XD16 work well? Such array would be around 5x5 mm with plenty of flood. Would it throw better than 9 XD16? I don’t know, maybe.

They make color-mixing hybrid reflectors, mainly for things like RGBW or tunable-CCT emitters. So the emitting surface does not necessarily need to be on-center.

Blurring dies together for the purpose of mixing colours completely defeats the purpose of having a variable lit area die for maximum throw with a lens.

Also, it is not possible to have a parabola concentrate light from different sources into a single spot.

Or you take more lenses or more reflectors and put together

Regards Xandre

Tradeoffs, tradeoffs, tradeoffs everywhere. :slight_smile:

Mixed optics trade frontal area (and therefore throw) for versatility. But as multi-LED lights tend to have shallow heads, throw/volume can be quite good. I like that. :slight_smile:

Aspheric zoomie with Boost HX surrounded by Oslon Pures (or other CSP LEDs) with a Wavien collar is as throwy as it gets. And is an OK flooder as well. But not very efficient in a throw mode. And making it efficient flooder is not straightforward. And the tint shift from throw to flood is big. And cost is very big.
Such zoomie would offer way better combination of a flooder and a thrower in a single host than I’ve seen so far. And would be way way smaller than 2 specialized lights while being just as good at thow and 90% as good at flood. A dual-head light could compete better than a pair of individual ones - but still it would be significantly larger.

Any tool that’s adequate at two things is not great with either. They say here, Jack of all trades, master of none.

I kind of like the configuration of the X70. But if they could put a White Flat in the center with a larger reflector oreven fixed aspheric, then a perimeter ring of Nichia LEDs or whatever… Sort of like those prjector headlamps with the halo ring.

Or how about a 2-headed light? I always wanted to mod an S2 this way somehow, with a narrow spot TIR on one side and 3 up frosted wide spot TIR on the other. Somehow incorporate a gyroscope inside so the light knows when you spin it around to activate the correct light… Or two forward switched wired 3-way so when you flip around and turn on one side the other side turns off…

The point of this is to have a single optic that is used both for throw and flood.
Otherwise you’re wasting front area that could be used for more throw.
To have the most throw per frontal area it needs to be a single lens.

LOL did you read what I posted? A head on EACH END of the light. What frontal area do you waste when you use the rear of the light?

Oh in that case you waste internal space making the light longer, still a waste when you have a perfectly good optic at one end already.

What’s good for throw may no be necessarily good for flood, and vice versa. No matter what you do, there will always be compromise - that’s exactly what engineering is. The good thing with a double-ended light is that the flood end can have a rather short optic - or even none at all; it could even be a mule on the other side with a diffuser lens.

Congrats, you now understand why I came up with this idea.
So that you could have the option of max throw or max lumens without having to compromise with a large LED that gets a lot of lumens/efficiency but less throw, or a thrower LED that makes fewer lumens with low efficiency.

Well then no congrats to you, because you can have a reflector that’s great for throw, but not necessarily hot for flood and vice versa. :smiley: Snide comments aside, you could just get something like a BLF GT, which happens to have a rather large flat at the focal plane, and add a ring of LEDs there. And it still probably wouldn’t have as good a flood as if it had a shorter reflector. So no matter what, there’s always some compromise - I won’t call a possible 40-50 degree beam much of a flood, but I suppose it’s all relative. For you, 10 degrees is probably considered flood.

But there probably are more oddball ideas out there… how about making a recoil flashlight, that has a forward facing COB in the center where the aperture is? The SyniosBeam has a large aperture on the reflector, which would fit a nice sized COB. Something scaled down to a more familiar format might be cool?

Reflectors are inherently inefficient and inflexible.
A movable lens can offer the most throw but if it is fully retracted to the led it can offer flood almost as good as a mule.

I concur.
Lens produces better flood than a mule.
Because it’s perfectly uniform yet not overly wide.

The Spark SP6 is a attempt for example
not half and nothing whole at my opinion
but a try.

Regards Xandre

How about … a recoil light with a movable mirror (or movable LED, whichever is less of an engineering nightmare)?

I did some ray tracing….and it looks to me like it would produce a hole in the middle of the beam. Not because of the LED blocking light but purely because of reflector shape and position.