Mostly due to how the distance from the LED to the lens surface is longer than the distance from the LED to the reflector surface.
Since the distance is greater, the “difference” angle of light coming from the LED is smaller, leading to less divergence.
That’s also the reason why outer parts of a reflector (farther from the LED) collimate light better, like in that image by djozz which I can’t find atm lol
Alright, but what if we use a smaller aspheric lens, resulting in the same size hotspot at (for example) 30 meters?
Wait, i’ll try it myself, see what we get.
An aspheric light will not significantly out throw a reflector light (all other things equal). The lens will have a little bit more active area due to the “dead” area in the center of a reflector, but this is not usually a large proportion of the total area. There can be variations in reflector quality (shape and reflectivity) that could cause some differences. They should throw pretty much the same because of I=LA and the fact that the LED luminance is constant at different emission angles.
A C8 vs the Ultrafire UF T20 or Uniquefire UF 1505 is a good comparison because they all have the same bezel diameter. The C8 throw is well documented. I could not find many reports of throw in the aspheric lights, but maybe you guys can…
I have like 50 different lenses, and the regular pattern is shorter focal length = larger spot.
Using a smaller lens means you either keep the same focal length and lose more light, or maintain same light collection and reduce focal length (making a larger shotspot)
Yes it shows up there too….
Does it look normal to you?? xD
That i know, but i was wondering what the diffrence would be between fwd reflector and aspheric lens with the same divergence (which would be a smaller diameter lens,or maybe it’s apples and oranges…).
So i was about to compare my Courui with my B158.
Will do that in a moment)
Yes, it does look normal here…
I just restarted my laptop (remnants) to empty all caches (couldn’t find how to do that in my Firefox), but i still see what i’m supposed to see, and it ain’t plants…
I think that if we remember the car headlights,they had recoil sets of some type.You can look at here. Headlamp - Wikipedia ,especially the Optical systems, Reflector lamps,
Lens optics.
It can, but the LED needs to move quite a distance, several cm not mm, also when you zoom to create flood you will have the huge dark spot in the center due to the LED
I found this, I think the top left mirror is the parabolic 3.5” listed in the description because the only one that is bigger is the 4” one.
Depth looks pretty good for recoil, and it’s optical grade glass reflector.
Thoughts?
notebook heatpipes.
there should be a heatpipe in most notebooks, and the cool thing is they are normally not round but flattened
in this recoil thrower situation this means a lot of light can pass while it takes the heat away, the inner structure should make orientation not affect preformance