Lighting plays an important role in our everyday lives. We rely on light to see, to work, to drive, and to navigate our way around. But how much light is needed for a particular situation? Lumens and lux are two types of measurements of light that are used to describe how bright a light source is. While they are similar, they measure different aspects of the light and are used in different ways. In this article, we will discuss the difference between lumens and lux and how to convert lux to lumens.
What Are Lumens?
Lumens are a measure of the total amount of visible light emitted by a light source. The higher the lumen rating, the brighter the light. A lumen is a unit of visible light energy, and it is expressed in lumens per square meter (lm/m2). Lumens measure visible light energy, but they do not take into account other factors such as the color of the light or the distance from the light source. For example, a 60 watt incandescent bulb may emit 800 lumens, but a 100 watt incandescent bulb may emit 1300 lumens.
What Are Lux?
Lux is a measure of the amount of light that falls on a surface at a given distance from a light source. Lux is expressed in lumens per square meter (lm/m2). Lux takes into account other factors such as the color of the light and the distance from the light source. A light source that is farther away will emit fewer lux than a light source that is closer. For example, a light source that is 30 feet away from a surface will emit fewer lux than a light source that is 10 feet away from the same surface.
How to Convert Lux to Lumens?
The conversion from lux to lumens is not an exact science, but there are some general guidelines that can be used to make the conversion. To convert lux to lumens, first calculate the area of the surface on which the light is falling. This can be done by measuring the length and width of the surface and then multiplying them together. Once the area has been calculated, multiply the lux value by the area in square meters to get the lumen value.
For example, if a surface is 2 meters wide and 1 meter long, then the area is 2 x 1 = 2 square meters. If the lux value on the surface is 5000 lux, then the lumen value is 5000 x 2 = 10000 lumens.
Conclusion
Lux and lumens are two different measures of light. Lux measures the amount of light that falls on a surface at a given distance from a light source, while lumens measure the total amount of visible light emitted by a light source. Lux can be converted to lumens by calculating the area of the surface on which the light is falling and then multiplying the lux value by the area in square meters. Knowing the difference between lux and lumens and how to convert between them can help you make the best lighting decisions for your home or office.
Frequently Asked Questions
What is a lux?
A lux is a measure of the amount of light that falls on a surface at a given distance from a light source. Lux is expressed in lumens per square meter (lm/m2).
What is a lumen?
A lumen is a unit of visible light energy, and it is expressed in lumens per square meter (lm/m2). Lumens measure visible light energy, but they do not take into account other factors such as the color of the light or the distance from the light source.
How do you calculate lux to lumens?
To convert lux to lumens, first calculate the area of the surface on which the light is falling. This can be done by measuring the length and width of the surface and then multiplying them together. Once the area has been calculated, multiply the lux value by the area in square meters to get the lumen value.
What is the difference between lumens and lux?
The main difference between lumens and lux is that lumens measure the total amount of visible light emitted by a light source, while lux measures the amount of light that falls on a surface at a given distance from a light source. Lumens do not take into account other factors such as the color of the light or the distance from the light source, while lux does.
How many lumens is 5000 lux?
To calculate the number of lumens for a given lux value, multiply the lux value by the area in square meters. For example, if the area is 2 square meters and the lux value is 5000 lux, then the lumen value is 5000 x 2 = 10000 lumens.
What is a good lux value?
The amount of lux needed depends on the application. For example, a room that is used for reading may need a higher lux value than a room that is used for sleeping. Generally, a good range for lux values is 500-2000 lux.
What is the difference between lux and foot-candles?
Lux and foot-candles measure the same thing – the amount of light that falls on a surface at a given distance from a light source. The difference is that lux is expressed in lumens per square meter (lm/m2), while foot-candles are expressed in lumens per square foot (lm/ft2).
Can you convert lux to watts?
No, it is not possible to convert lux to watts. Lux measures the amount of light that falls on a surface at a given distance from a light source, while watts measure the amount of energy consumed by a light source.