The M2S review is also up
This one is close to manufacturer specs.
So the new LEP Style might be able to compete. This supports my theory, that @ChibiM ’s M1X unit might have a focus problem where the focal point of the converging laser beam is not directly on the phosphorus.
Exactly, good catch. I noticed all the parts swapping amongst the mfg in China. Burning laser modules for etching tables on bg. New to the lep game myself, but the actual diode itself was wondering about in that burning laser. Which is amazing to think is inside one of these. Then locating the parts and drivers, which has been covered it seems with those Mitsubishi links. I was then thinking on how to change to different lenses on skylumen. After seeing the post about the guy with the crystal ball.
Wholesome thoughts over coffee.
On the new design is the phosphor disc in the center of the WBL eye transparent somewhat? Just wondering how it is all reflected up through that little hole.
Edit: I see now the review of the new m2s. Old lep technology just went up in price.
So what’s the point of this new inferior design?..The price hasn’t really changed…for the M1X anyway.
If it did have a focusing issue, wouldn’t the hotspot be relatively much larger than compared to other LEPs? More surface area of the phosphor would be hit so more would illuminate?
My guess is that with perfect focus the Laser spot has the size of the phosphorus, with mediocre focus some laser light hits the housing around the phosphorus, that would explain the lower lumen output as well.
My understanding in that the laser in LEPs normally focus on a super tiny spot and they work essentially as aspheric throwers but with a super tiny emitting surface area. The relative large size of the phosphor patch is simply to make it easier for the laser to be aimed at some phosphor.
If the entire phosphor were lit up, the emitting surface area would be just like some LEDs on the market and the beam would be very wide.
LEPs are like aspherics powered by a very small LED with the power of a flat white but a surface area several magnitudes smaller (ideally).
That is my understanding
your understanding is correct. But that is only true if focus is perfect, as this would produce a very intense and tiny spot.
As the M1X has exactly the same driver as the M2s (you can see M2s printed on the M1x driver in the 1lumen review pics) it should have roughly the same amount of lumens, but it has not. So something must be wrong.
Maybe it’s not focus after all, the focus theory is just my theory. As the power draw is measured to be comparable but the lumens are not, either the diode is underperforming or light is lost somewhere, in which case my only possible explanation would be focus on the phosphorus.
I do agree that light is being lost somewhere but what I was trying to say is if the hotspot is relatively small, then the focus is probably right on point because if it were not, the hotspot would be significantly larger than those of similarly sized LEPs.
that’s true. This would rather indicate a faulty laser diode maybe? Cuz the driver is taking the expected amperage.
I don’t understand what you’re getting at? These LEPs use off the shelf laser modules with some off the shelf and some proprietary parts.
I am really disappointed in the M1x, got mine over the weekend and it barely out throws my aspheric with W 1.1. I love everything about it,except for the performance,which was terrible enough for me to get an RMA to return it. I’m sucking up a 15% restocking charge, but I think I’m going for the Weltool W4.
Ouch.. do you have any beamshots or measurements? I think mine wasn't a 'special case' after all.
I am wondering what the beam will look like without the little disc with phosphor.. too dangerous to try?
Why would you? You are then simply projecting a powerful blue laser beam (a very expensive but not superior laser pointer), throwing away the essentials of what a LEP flashlight is.
ChibiM, I sent it packing already,unfortunately. My aspheric was about 820kcd,which I borrowed a light meter to come up with that number. The Jetbeam had an odd blue center up close surrounded by a greenish outer beam. I think they focused on asthetics rather than function this time. Either way it was a loser in my opinion.
ChibiM, do you see the same? Maybe there really is a focusing issue. You mentioned that tube/spacer… Any chance you can change that part and see hoe the beam changes? How about the dome/precollimater - can it be removed?
Also, is it possible to swap the LEP module between the m1 and m2 models? Maybe it could help track down the problem we see in the m1…
Might be fun to try once but just do not look down the front of the flashlight and do not put the battery inside withought the light fully assembled. That’s how you can avoid a terrible accident. Also be sure to test it out outside first, just in case.
On a sidenote could you measure the lumen output of both new jet beams without their front aspheric lens? So just the bare phosphor? I wonder if one is underperforming or if it’s the lens (which it shouldn’t be)
My weltool W4 (with the “old” style LEP Module) also has a blue center. This can even be seen in the beam when shining it in the sky, the middle is bluish. But the Spot in the distance does not inhibit that blue center, just up close.
The blue when you shine it up at the air is likely due to an effect called atmospheric scattering where the blue wavelengths of light interact most strongly with molecules of gas in the atmosphere, and also the reason behind the sky being blue.
I think he means that the center of the spot is visibly more blue than the edges. This is also true of my Acebeam W30 and Weltool W3 Pro.