How many lumens in one LED?

Answer 1

A LUMEN is a unit of measurement of light. It measures light much the same way. Remember, a foot-candle is how bright the light is one foot away from the source. A lumen is a way of measuring how much light gets to what you want to light! A LUMEN is equal to one foot-candle falling on one square foot of area.

So, if we take your candle and ruler, lets place a book at the opposite end from the candle. We'd have a bit of a light up if we put the book right next to the candle, you know. If that book happens to be one foot by one foot, it's one square foot. Ok, got the math done there. Now, all the light falling on that book, one foot away from your candle equals both…….1 foot candle AND one LUMEN

Answer 2

An object emitting 1 lumen of luminous flux in all directions has a power of 0.23 watts, so a 1 watt light source emits 4.3 lumens.

It is important to note that lumens are a measure of VISIBLE light only. A 100 watt incandescent light bulb emits infrared light along with visible light, and it would therefore be incorrect to say it emits 43 lumens.

Also, a watt is a unit of power (in this case, a unit of power emitted from a light source). A lumen is a quantity of power passing through a solid angle.

Answer 3

1 watt can be exactly zero lumens, such as when it is used to turn a fan.

A watt is a unit of energy, lumens is a unit of light. Your question is like asking how much weight can 1 watt lift. It depends on whatever is using the (electrical energy) watt, and how efficient it is in doing whatever task it's designed to do (lift things, make light, heat things, etc.).

For your specific purpose, look at the lumens provided by the product you are looking at - more lumens per watt will be delivered by an LED light than an incandescent light.

Answer 4

There is no conversion between lumen and watts.

Answer 5

Per watt, bulbs produce these amounts of light:

Incandescent: 10-12 lumens/watt

Halogen: 13-15 lumens/watt

CFL: 50 lumens/watt

Answer 6

it depend on the technology used of the led lamb

example i have two 100 lumens led lambs

one of them use 2.4 watt , and the other one use 4.8 watt

Answer 7

Depends on the LED.

Answer 8

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