I may be wrong, but I don’t believe the diode is below the phosphor. That lens next to the phosphor is the laser which points forward (toward the aspheric lens at the front of the head) and the two mirrors direct the laser down onto the surface of the phosphor.
I’ve seen many people more knowledgable than me mentioning that for proper throw a lens shall be plano convex or concave convex.
It’s curious that they used double convex.
Does anyone have an explanation for that?
BTW…I wonder if one could use a collar to improve performance and efficiency. Fitment issues aside - it should work with precise enough placement.
Possibly Yes. In lasers the light from the diode exits almost straight so the optic really just needs to true the beam up a little (double convex) to keep it parallel (collomated)
with LED the light from the emitter exits at quite a wide angle with considerable divergence, the lens really has to make a massive adjustment to get it even close to parallel its not true collomation and should really have a second double convex lens after the aspheric to fully collmate the light. this is why you will always have the beam diverging the father it gets away
In LEP i believe because the phosphor is being excited from the top emitting side the light has way less divergence probably not as a tight as a laser diode but a good deal tighter than a conventional LED so they are able to collomate it properly with a double convex
Eye protection is a must, you could put an eye patch on then you will only damage one eye. I AM JOKING!!
i was thinking about hitting a dedomed led with a laser. XPL or XHP35 HI would be the best to start with.
It looks like the diode is soldered into the centre of the PCB and the dump is to the side. might have a few jack daniels for courage and desolder it.
The plastic lens is probably lighter and cheaper and i think the beam could be made tighter with a different lens
Enderman posted links explaining aberration in the 2 lens types remember seeing them but dont know where.
Correct do you think a resistor mod is the way to go? i can do the mod on this driver and do a swap, the new one should be here by friday. Also have a new laser distance meter coming for measurements
I don’t think so. LEP is a Lambertian emitter (much like a LED) and light is scattered in all directions. I just checked it up…
So the beam needs to be narrowed down rather than widened.
While making sure that the emission is Lambertian I stumbled upon a patent for a RLT collar on a LEP. :person_facepalming:
When a layman (like me) can come up with an invention by themselves, it shall not be patentable. But reality shows otherwise.
Oooo well in that case you could massively improve performance
it really sucks how they have tied up those collars so no one can use them, they have so many applications and i mean really they could be making a fortune selling them as an upgrade
There greed will backfire because sooner or later the chinese will rip it off and they will have missed out on all of those sales (rant over)
Then any reflection from the focal point goes right back into that point. LEDs and LEPs are not point sources but they mostly symmetrical and an off-axis reflection just hits the opposite side of the emitter.
Well the parabolic version could well be doable… Im still not convinced on the hemispherical one maybe im just being thick here I cant see why they would choose a difficult costly material like glass unless it was needed , and the only reason iv got is refraction ? my understanding is that curving the mirror does not change the angle of reflection , it would still be reflective not retro reflective , having it spherical will however correct for the divergence and refocus the reflected beam
The W30 is marketed as a dive light (claimed 100m water resistance), and it just “fell apart?” That doesn’t give me much faith in their water resistance claims.