How many lumens are in a lux?
One lux (1 lux) of light is a measure of the light density, equivalent to 1 lumen per square metre (lm / m^2).
Is lux and lumens the same?
Lux: The amount of light that is cast on a surface is called illuminance, which is measured in lux. This can be thought of as light intensity within a specific area. Lumens: The total output of visible light from a light source is measured in lumens. One lux is equal to one lumen per square meter (lux = lumens/m2).
Can you convert lux to lumens?
Lux and lumen units represent different quantities, so you can’t convert lux to lumens.
How many lux is 400 lumens?
Well imagine you buy a 400 lumen bulb and put it in a room with 10m2 of surface area inside. A little toilet or store room for example. Putting that into our equation, the room is therefore on average getting a light intensity of 40 lux.
How many lumens is 500 lux?
However, the same 1000 lumens spread out over 10 square metres produces a dimmer illuminance of only 100 lux. Achieving an illuminance of 500 lux might be possible in a home kitchen with a single fluorescent light fixture with an output of 12000 lumens.
What’s the difference between Lumen and Lux?
The core difference can be summarized as follows: Lux is a measure of illuminance , the total amount of light that falls on a surface. Lumens is a measure of luminous flux , the total amount of light emitted in all directions.
What is the relation between Lumen and Lux?
Lumens are related to lux in that one lux is one lumen per square meter . One lux (1 lux) is defined as being equivalent to one lumen spread over an area of one square metre. To put it another way: A specification in lux tells you how many Lumens (total light output) you need given the measured area you are trying to illuminate.
How many lumens is one lux?
1 lux = 1 lumen per square meter. This is equivalent to: 1 lux = 0.0929 lumens per square foot. Aaron Zvi has been a writer and photojournalist for 10 years in Washington, D.C., and the Middle East.
How many lux or lumens is the Sun?
The unobscured Sun provides an illumination of up to 100 kilolux (klx) on the Earth’s surface, the exact value depending on time of year and atmospheric conditions. This direct normal illuminance is related to the solar illuminance constant E sc, equal to 128 000 lux (see Sunlight and Solar constant).