lux output??
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Kilovolt
Flashlight Enthusiast
If you browse the welcome mat you will find answers to some of your questions:
Q: What's the difference between "lumens" and "lux"?
A: Lumens measure the total amount of light output from a particular source. Lux measures the intensity of the light hitting a specified area. For example, an ordinary household lightbulb generates about 1000 lumens, but the intensity of its light at a particular point, such as on a book you're reading, will be comfortably low. Almost all flashlights rely on an optical device such as a reflector or lens to squeeze most of their output into a small area, which allows you to illuminate a point of interest with enough intensity, but without requiring a lot of power. To illustrate this concept, try the following: First, look at your room's ceiling light. In all likelihood, you can stare at it without much discomfort. Now, try looking into a weak flashlight like a traditional incandescent Mini-Maglite. You'll notice that it seems very bright. This is lux. Now, remove your Minimag's head to put it into candle mode. Try switching between its output and your ceiling light's output. Since they're now illuminating approximately the same area, the much higher lumen value of the ceiling light will provide much higher lux values at a chosen point. An extreme example of high lux and low lumens is a laser, which doesn't really create that much light, but focuses it into a tiny, brilliant point.
Q: What's the difference between "lumens" and "lux"?
A: Lumens measure the total amount of light output from a particular source. Lux measures the intensity of the light hitting a specified area. For example, an ordinary household lightbulb generates about 1000 lumens, but the intensity of its light at a particular point, such as on a book you're reading, will be comfortably low. Almost all flashlights rely on an optical device such as a reflector or lens to squeeze most of their output into a small area, which allows you to illuminate a point of interest with enough intensity, but without requiring a lot of power. To illustrate this concept, try the following: First, look at your room's ceiling light. In all likelihood, you can stare at it without much discomfort. Now, try looking into a weak flashlight like a traditional incandescent Mini-Maglite. You'll notice that it seems very bright. This is lux. Now, remove your Minimag's head to put it into candle mode. Try switching between its output and your ceiling light's output. Since they're now illuminating approximately the same area, the much higher lumen value of the ceiling light will provide much higher lux values at a chosen point. An extreme example of high lux and low lumens is a laser, which doesn't really create that much light, but focuses it into a tiny, brilliant point.
djans1397
Flashlight Enthusiast
https://www.candlepowerforums.com/threads/190999
Here's a start. Selfbuilt does lots of reviews in here. This should help.
https://www.candlepowerforums.com/posts/1772431&postcount=1
This posting I've also found helpful.
Good luck.
Dan
Here's a start. Selfbuilt does lots of reviews in here. This should help.
https://www.candlepowerforums.com/posts/1772431&postcount=1
This posting I've also found helpful.
Good luck.
Dan
bessiebenny
Enlightened
It's like saying why does 2 cars with same V8 engine but different chassis have the same accelaration/top speed.
One which is sleeker / lighter will be quicker right?
Same with flashlights.
1. The size/design determines how well it'll cool the light engine. So whole body is your heatsink. Cooler the light, it stays brighter.
2. The size / shape and type of the reflector determines how the output looks like.
So the smoother, sleeker/deeper the reflector shape, the light will be more concentrated and hence throws better. (lights up things further away)
But, it means it's less practical for when you need to light up a wider area. Then you need orange peel (OP) r textured reflector to disperse the light.
You get less concentrated hotspot but you get a floodier light to light up bigger areas at once.
One which is sleeker / lighter will be quicker right?
Same with flashlights.
1. The size/design determines how well it'll cool the light engine. So whole body is your heatsink. Cooler the light, it stays brighter.
2. The size / shape and type of the reflector determines how the output looks like.
So the smoother, sleeker/deeper the reflector shape, the light will be more concentrated and hence throws better. (lights up things further away)
But, it means it's less practical for when you need to light up a wider area. Then you need orange peel (OP) r textured reflector to disperse the light.
You get less concentrated hotspot but you get a floodier light to light up bigger areas at once.
HKJ
Flashaholic
I can't find a thread that listed the lux output for the following light? Can someone explain how the lum is about the same, but the lux is different....
One way to compare lux and lumens is this:
lumen is the amount of water in a lake.
lux is the maximum depth of the lake (Or rather the depth at a specified place, and we always specify the deepest place).
On flashlights the different lux readings are due to different reflectors, some are concentrating the beam to a very narrow beam, others are more spread out.
Gunner12
Flashaholic
Lightreviews has reviewed all of those lights and has Lux ratings for all of them(except the MRV).
