Lumens vs Lux

Lumens vs Lux | What’s the Difference?

A light bulb is one of the most essential devices you can find in your home. The light from these bulbs helps to illuminate the room, making it easier to get around.

However, when you want to make sure that you have enough lighting in your house, you might be wondering how much light does a single light bulb provide? That’s why it is essential to understand the differences between Lumens and Lux.

Lumens vs Lux: Differences in Brief

Lumens and lux are both units of measurement that describe the light intensity. Lumens measure the total amount of light emitted by a source, while lux measures the amount of light that falls on a given surface.

The difference between lumens and lux is essential to consider when choosing to light a space. For example, a room to be used for reading would require more light (measured in lux) to fall on the reading surface than a room that is only used for general ambient lighting.

What Are Lumens?

I’ve used the term “lumen” to describe light bulbs since I was a kid. The word comes from the Latin lumina, meaning “light.” But did you know that there is another definition of lumen?

This is the technical name for the unit of measure used to define how much energy a light bulb produces. One lumen is equal to one candela (cd). A standard incandescent lamp emits approximately 10,000 cd per watt.

In simple words, Lumens measure the amount of light that is emitted from a light source. This unit of measurement is used to determine the brightness of a light. The higher the number of lumens, the brighter the light.

What is Lux?

Luminous intensity is typically measured in lux (lx), the SI unit of measurement. This unit is used to measure the illuminance or the brightness of an object. One lux is equal to the amount of light that reaches a one-meter square with one lumen of light.

1 lux is equal to the amount of light produced by 1 candle (which is 1 lumen) / 1-meter square

1 lx = 1 lm/m²

1 lux is the metric unit of measurement equivalent to 0.0929 footcandles, the imperial unit of measurement for illuminance.

1 lx = 1 / 10.76 fcd

or

10.76 lx = 1 fcd

Measurement Method Differences

There are two main types of light measurement: lux and lumens. Lux is a measure of the intensity of light, while lumens is a measure of the amount of light produced.

Lux is measured with a light meter, while lumens are measured with an integrating sphere. Lux readings are taken at a specific point, while lumens readings are taken over a larger area.

Lux is a more accurate measure of light intensity, while lumens is a more accurate measure of the amount of light produced.

How To Convert Lux Into Lumens

The light needs in every home, office, or commercial space vary greatly. This is why it’s not as simple as shopping for light bulbs based on lux.

You can’t predict how your particular environment is going to affect light. To use the torch example again, I couldn’t sell you a torch saying that it is 500 lux because that would depend on too many factors.

To convert lux into lumens, divide the lux by the surface area in square meters. This will give you the number of lumens per square meter. To find the total number of lumens, multiply the lumens per square meter by the total surface area.

When to Use Lux or Lumens?

Lux is a measurement of how much light you need to achieve a certain brightness level on a surface or in an entire room.

A lux level is recommended to use the space to ensure enough illumination to comfortably or safely perform the appropriate task in that area.

Relationship Between Lumen vs Lux

Lumens and lux are often used interchangeably, but there is a big difference between the two. Lumens measure the amount of light produced by a light source, while lux measures the amount of light that actually reaches the surface.

In other words, lumens measure the potential brightness of a light source, while lux measure the actual brightness of a light source.

The relationship between lumens and lux is essential when choosing a light source for a specific application. For example, if you need a very bright light source, you would want to choose a light source with a high lumen output.

However, if you need a very focused light source, you would want to choose a light source with a high lux output.

Leave a Comment

Your email address will not be published. Required fields are marked *