Those values sound accurate. Why don’t you try calulating divergenace using the spot size I mentioned above.
Ahh those pictures demonstrate your point perfectly. I forgot about one being aspheric and the other utilizing a reflector, although the same affect can still happen apart from 2 different focusing mechanisms (or whatever the technical term is).
I don’t really see why its necessary considering Peak Beam gives the official beam divergence on their website :shrugs:
I tried it myself. I got 0.133° for the central hotspot with maximum intensity. Their 1° value might be for the dimmer corona around the hotspot.
This is based on the following things:
Diameter of light source: 0.125mm (this is the diameter of the part of the arc with the highest luminance on the tip of the kathode)
Maximum focal length of reflector: 94mm
I calculated the spot size in different distances (using the thin lens equation) and then the divergance based on the size in two different distances and the distance between these two points (using the equation for beam divergance). Also note that while Peakbeam notes a spot size of 2in (5.2cm) in a distance of 30m, I only get 4cm at that distance with my calculation.
I won’t be surprised if it beats some of the best throwers in eyeball tests even if the ANSI figure isn’t as high. It has fewer lumens, so it must be keeping more photons in the hotspot. If it practically has no spill, it’ll be an awfully fun light to play with. The $299 price is better than I expected too.
Wow…
That WL20 is 1milion candela laser flashlight…
Future is here and it seems my modding days are over cause I will not have any need to mod super throwers when led is clearly surpassed by laser.
I just hope laser module is capable of withstanding centerfire rifle recoil.
I would wait before making conclusions. As you mention the robustness ist definitely something to keep in mind. The tint will be a bit different. We also don’t know how nice the light will be when defoccused. The spot might also be less even. Add to this the increased expense.
Are the W10 / WL20 really focussable?
The blue /cyan point in the video of the WL20 beam (the W10 has a nice white spot) looks weird. Maybe the phosphor is not where it should be and the blue laser light is mixed with white light. I could imagine that this issue is one of the problems if using these new technology.
I'm sure that LED manufacturers (even those with experience in laser technology) present laser diodes with excited phosphor in one package in the next months / years. Maybe they look the same like the LED we know and maybe they could also easily be reflowed? I remember that Osram presented such a concept some time ago...
The blue in the middle just seems like chromatic aberration.
I’m not sure why there would be a blocked hole in the center, it is an aspheric light not a reflector light.
They may be using a phosphor with the laser diode placed behind it, which would require a piece of light-absorbing material directly in the center of the lens to prevent laser light form leaking.
If the center of the lens is blocked then that would create the “hole” that you can see in the video, and regular chromatic aberration would make it look blue.
At farther distances this hole and the blue tint would disappear.
The light is fixed focus single mode. Chromatic aberration is pretty significant. Could see no hole though. Tint differences were visible up to 20-30m. As it was indoors I could not check further distances.
i was not impressed by the laser lights tbh...
What’s the practical use for a beam profile such as the WL20?
Sometimes things are only done because they can be done. Most of us do have many lights with zero practical use 
no one has seen a beam now, only a spot in a bright exhibition hall.
i could imagine one would like to mount that on a rifle?
btw
the GT made a brighter Spot ;)
did you bring your GT along? I thought about it, but did not want to haul that huge beast along all the time just to stomp the WL20
on the second day..
got a lot WOWs ;)
It’s hard to really tell for sure, but it appears to have very little spill.
Aspheric lights don’t have real Spill. Only the light reflected off of the internals of the flashlight exit the light as Spill.
Should be a kind of corona so, unperfect collimation of the light. Spill is direct light from emitter, isn’t it?
No.
Corona happens to reflector flashlights that have a gradual decrease in intensity around the spot.
Aspheric lights have only a spot, no spill or corona.