Longer throw without changing the driver !! :) Prototype is done and now it's time for testing.. ( more beam shots)

Nice experiment DayLighter. You have creative a lively topic of debate. Keep them up.

HOly crap… it’s cold out here tonight and so freaking windy… but in the name of science… i decided to throw another experiement. :smiley:
this time i’m using another small flood light Ultrafire HD2011 got it from Wallbuys special promotion for $9.99
but this time i’m including light meter at the end of the spectrum. it’s PIA since i have to keep on going back and forth between the flashlight and the meter to take the picture… same distance… about 80’ away and this time to avoid any confusions, i’m going to use my mod instead the telescope

HD2011 before ( notice there’s no hotspot as HD2011 is a flooder light)

the light meter measurement at 80’ away

HD2011 inside the tube

HD2011 beam shot ( notice the hot spot)

HD2011 light meter measurement at 80’ away

SkyRay King at 80’ away


SkyRay king light meter at 80’ away

now you guys can throw all this science about lights at me… but the meter don’t lie, the device is working using just one magnifying glass at the front tube. :smiley:

check the new posting… it works… but using two lens will throw even farther :smiley:

Ok daylighter, you were right in regard to flooders. A floody light will throw further that way, but anything even remotely throwy (like a C8) will not benefit from this. (As shown by my beamshots)

i made more pictures with the numbers for you :slight_smile:

all the decent thrower i have doesn’t throw as good as flooder light, but nevertheless… the hotspot certainly appeared much brighter at the distance around 30’–50’ away… the meter says so too :slight_smile:

Well I don't know what types of thrower's you have. ;)

cheap throwers like these…
UltraOK T6 XML
Trustfire C8 with extension tube
and some SS -A100 XML T6 Zoomie

Nobody asked questions I use a 12” Oil funnel as body

Once again, someone correct me if I am wrong but I think my original post still stands.

You have created an aspheric-like system. This focuses your beam and depending on the light can help increase throw. However, in comparison to an aspheric (which when tuned correctly turns diverging beams into “parallel” ones) your system turns somewhat parallel beams into probably converging ones. This beams will converge at the focal length and disperse after that. An aspheric lens would theoretically stay parallel infinitely.

I think people just want to clarify what you have done. Initially you posted that it increased brightness, which means that you increased lumen output. In this case, this is not true (just a misunderstanding of what brightness means). You are then stating it increased throw, which is true to an extent (except for what I mentioned before with the parallel and diverging beams). The thread gave off the idea that you found some magical way to to make cheap lights perform like amazing lights with high lumen output and monster throw. At least that is how I read it. Originally I came into this thread thinking you found some way to increase lumen output without changing what the LED was driven at which I would have been highly interested in. Who wouldn’t want more lumens with LEDs driven at the same current? Basically that could mean less heat, same battery life (or better with less heat) and more light.

In the end (like I said before), you created a cheap way to focus your floody lights and make them more useful which is cool and something I would keep in mind the next time I need a more focused beam out of my floody lights (and have a magnifying glass on hand). However, the system created is still not as good as an aspherical one.

i’m glad you find it entertaining too :slight_smile:
now if we can only miniaturize the system through the lens instead the tube… it’ll be a lot cooler :smiley:
for now… the only way is just have to use the long tube… i’m glad somebody else also thought of this too.
sheesh you could have chime in your idea and help defend me… lol :stuck_out_tongue:
nice shot BTW :smiley:

to be honest with you… i’m still baffled by this too… the ceiling test shows nothing different in brightness than without it.
however… like i pointed it out in pictures or light meter test it doesn’t lie… it simply is brighter.
i changed the subject to more throw instead brightness as it get a lot of people confused.
i guess some people perceived brightness in terms of calculated scientific formula. others like me…to see those beam shots, it just plain simple brighter.
as far as lumens? does it increase? or does it decrease? i don’t really care nor need to understand how it works… i want a cheap light and able to throw far … maybe as far as lights that cost 10X more than my cheap light, and i found it the device does just that.
too bad some people have higher expectation that the device need to increase in lumens that can measured scientifically to be accepted as it is brighter than before.
as my picture shows… using my idea,my cheap Trustfire Wf-502B can throw over 300’, to me… that’s amazing,as normally that light will never hit over 100’… but even with those pictures… some people still unconvince.
if you meant aspherical lens as in zoomie flashlight… i’ll be glad to tell you it works wonder too with the device.
as it cancel out the typical square hot spot that associated with zoomie light, it even throw farther too :slight_smile:

my next experiment is going to use even cheaper flashlight such as coast G10 , i got this light for free for filing up a survey with them :slight_smile:
clearly this light will hardly can illuminate an object 50’ away, yet during my preliminary testing using the same device… it able to throw that far.
stay tuned :slight_smile:

The lumens decrease, as I already proved. (Using my light meter)

DL, the meter measures light intensity(lux), NOT brightness(lumens). Please understand this. Misusing terms is why everybody is confused.

When you read the number being higher, it means simply light is more intense/concentrated. Measuring straight from the front, you get much higher number, that number shows light is more focused and concentrated on smaller spot. This is lux.

As you mentioned, measuring light bounce give same number on the meter, with and without. That is expected, as ceiling bounce scatter the light and average out the intensity.

Seriously though, a few members already explained straight in this thread and I don't think you're even trying to understand them. Lumens is NOT lux. I understand what you're saying, but using different "language" and "terms" simply won't get points across.

here we go again at this Lux and lumens thingie… for one thing, you’re right about me not even trying to understand them.
as i will mention it again… and again… this mod is not about them lux or lumen.
is about* an idea *how to make cheap flood flashlights throw farther than they normally could.
maybe i’m making a mistake in the beginning mentioning about brightness as some people confused at what’s the meaning of brighter.
to some people like you…the meaning of brightness have to be scientifically measured in lumens or lux.
and to some people like me and others who don’t give a crap regarding the lumens or lux, we judge it by our own eyes…
if the pictures shows it’s brighter than before… then it is… as simple as that.
if what i did simply manipulating beams of light into tighter beam so it can throw farther than before… then that’s it, that’s the goal for me.
and to others like me…we don’t care about what parallel beams is, or how much lumens lost in the process…
all we know is that darn thing can throw farther than before. make that a lot farther :slight_smile:
like i said before… maybe your point of view of what’s consider brighter is different than on what my point of view of what brighter is…

but unfortunately some people like you tend to get lost in the moment and rather enjoying debating on the issues of what can be consider the term of brightness, and failed to see the bigger picture here.
it is about* sharing ideas * it is not about trying to get points cross,it is not about convincing other people that they should believe in my mod.
it’s a simple mod build for the fun of it… that’s all about… FUN :smiley:

Anything that is trying to increase throw is about lux...

lol…give it up already scaru :stuck_out_tongue:

DL, why are you so determined that you don't want to learn about the correct terminology? Imagine you wanted to discuss car motors and someone would constantly confuse horsepower and torque... At some point, you'll not only confuse members, you'll irritate them.

DayLighter I’m with you. Many here has not read (or understood) what I pointed at in post #24.
Not that it is easy stuff, It took me years to comprehend it (I was ten years in an optical lab as a software developer).

What you did was to focus the beam better and as a result you have a brighter hotspot as you say. Simple as that.

Brightness has little to do with total output and is a physiological, unlinear unit. Just as you say, does this look brighter than that?
Think of this experiment: You light up a wall with your light and have a bright hotspot on the wall. You take a dark cloth to the wall and block half of the hotspot.
The result is that the remaining hotspot has exactly the same brightness as before althougt you blocked half of the lumens out.

Brightness is an unlinear function of an objects Luminance. The Luminance of the object (here the hotspot on the wall) is the difficult thing to understand. It is measured in candela per square metre.
Bicycle lights are often measured in Candelas (which is lumens per unit of solid angle - Half a sphere covers about 6 units of solid angle).
Think of the hotspot as a collection of houndreds of tiny bicycle lights that shine in your face, each with the intensity of 1 lumen per unit solid angle.
The luminance (and hence the brightness) is then how many of these tiny lights there are per square meter.
(Not easy stuff to explain either).

Wow.
Concept, I was thinking would increase brightness shown here, and done before I could try it :slight_smile:
It’s nice to see people chime in and actually explain “torque and horsepower” of the flashlight. I UNDERSTAND it now!