you don’t have to be a Rocket scientist to realize which one is brighter.
it’s a very simple concept… all the light that was scattered when it leaves the led diode was then focus into a tighter spot, thus it can throw farther.
example… if you have a running water coming out from the hose… it can only shoot as far as it can get.
now if you put your finger on the hose, slightly covering the hose… the water will travel farther than before.
same concept.
the point is… it doesn’t matter to me if it the output is the same or not… but if i can see more farther than my measly flashlight can shoot… i’m happy
PS:do you think the education system in Croatia is better than in US? ’cos i don’t think croatia able to send the man to the moon yet
hmm… topic subject is misleading?
which part that you don’t get? if it using the same light without modying the driver… and the light is more brighter than before… and it can throw more farther before…so what would you like to call it?
Daylighter, brightness refers to the lumen output. This is the total output, which actually decreases with your mod due to inefficiencies in optics. Throwing further is an increase in candela, or how much light there is in the very center/brightest part of the beam. This goes up in your light since more of the light is going forward and less is in the spill.
sorry scaru… i’m still at lost here, my mod enabled me to shine object more clearly than before… i can see shine more farther than before… but it doesn’t mean it’s more brighter? so what you guys call it then? :8)
Brightness, is the total light. To get an idea of total light point the light at the ceiling and measure lux on the floor next to the light. It will be less with your mod.
The reason it throws further is because more light gets focused into on spot.
Here a diagram is.
Notice how before there are 9 beams before and 7 after. Yet the after one would clearly light up things further away, despite there being less light.
Yea, as people mentioned the brightness is about the same besides losing some through your device. If you did a ceiling bounce test, the room would stay about the same brightness whether you had your device on it or not because the lumens from the emitter remains the same. While the hotspot becomes brighter, your spill becomes dimmer.
It is what happens, but is not why. The reason the XP-G can throw further is the smaller die size, so it is closer to a point source of light. So what matters for that is lumens per mm2. Which is where the XP-E2 wins, but then you have to take into account the beam angle which is narrower on the XR-E which could be beneficial with aspheric lenses, but is detrimental with reflectors.
XPGs can throw further because the surface area of the XPG die is 1x1mm while that of the XM-L is 2x2mm ie, four times as large. Reflectors in a different way from aspherical lenses project an image of the die forward so the smaller the die, the smaller the size of the hot spot.
Geeeezus people…for goodness sake can we just agree the light does appear brighter?
let’s not throw lumens or candela or scientific formula into how to calculate the brightness into this mod.
it is what it is… the lux meter show it’s brighter and that’s good enough for me even if it still the same lumen.
what i’m trying to achieve here …is to use a cheap and decent light and turn it into something of more expensive thrower
the mod does create a brighter hotspot, the same hotspot of more expensive light that cost 10X more expensive.
of course as we know it… to get throw, you will sacrifice spill, you can’t have the throw of TN31 with the spill of TR-J18.
so let’s us all just agree that the mod gives a better illumination than before.
if there’s no pictures to back it up… then all is just words
Is that it? I thought that the problem was since optics are designed for a true point source anything not in that point is not going to go perfectly "Straight" and will diverge from the beam. Then the higher lumens per mm2 of the XP-G will make it throw further.
For example the XP-G2 die produces 86.73 lumens per mm2 while the XM-L die produces 45.5 lumens per mm2.
You don't understand. If it can't be dissected, corrected, manipulated, stipulated, debated, rejected or accepted, it can't be discussed in a flashlight forum.
Yes, you redirected the light and it appears brighter, because it is more focused. No, it really isn't brighter scientifically, because optics cannot increase light output. They are all just going through their usual long BLF process, let them enjoy, they can't help it.
As for me, I think it's a pretty cool attempt at focusing the light from your flashlights into a more usable beam. Not everyone knows the scientific correctness and the reality is "It's just a flashlight for ***** sakes and it's just a hobby, not building a rocket here, LOL. Have fun with it.
Guys, the argument here is over terminology. It technically is not brighter as brighter is total light output. It is throwier which is the amount of light in one point which is what the lux meter measures.
