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recommendation for LED brightness? Answered

I am making an LED suit that has to be visible in low-light environments, like night or in a cave. (fog, smog, and rain not taken into account)

any recommendations for a good brightness? how many lumens?

it has to be visible so a car can see the wearer of the LED clothing, so the wearer doesn't get hit.

Discussions

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rickharris

Best Answer 3 years ago

Take your clues from the standard requirements for riding light for a bicycle.

Front Lamp

One is required, showing a white light, positioned centrally or offside,
up to 1500mm from the ground, aligned towards and visible from the
front. If capable of emitting a steady light it must be marked as
conforming to BS6102/3 or an equivalent EC standard. If capable of
emitting only a flashing light, it must emit at least 4 candela.

You can assume that any light meeting the spec BS3648 will be bright enough to be seen.

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Downunder35m

3 years ago

I just assume the driver of the car is sane...
So why not simply use reflective strips on the clothing?
Most packpacks and outdoor clothes already offer them anyway.
Just a few 2cm wide strips on several places around the body will illuminate you like a xmas tree if a car with headlights on comes along.

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GaudnarokDownunder35m

Answer 3 years ago

thanks for the answer

. i cant use reflective strips because it needs to light up in the dark without an external source of light.