Understanding Light

- What Are Lumen, Lux, Watt and Kelvin?

What Are Lumen, Lux, Watt and Kelvin?

 

Lumen

Lumen is a unit of light measurement. Therefore you need to understand lumen as the volume of light that comes from a lamp. A high number of lumen, means a high volume of light.

LED vs Glow Light Bulbs

 

Lux

Lux is a measurement unit of light, which also includes the area. A lux is the same as a lumen per square metre. With lux, measure the amount of light which is visible in an area.

 

Watt

Watt is the opposite of Lumen and Lux. It is a unit of energy consumption and not a measurement unit for light. Watt can only be used to inform you of how much energy the product consumes, and not how much light the lamp provides.

 

Kelvin

Kelvin = colour temperature, this shows what light colour the LED bulb has.

When you buy LED bulbs it is a good idea to know the different Kelvin degrees, this makes it easier for you to find the LED light matching your needs.

Kelvin Colour ScaleSun Kelvin
Examples:

White / daylight 4500 – 6500 kelvin
-Used in bigger shops, workshops and agriculture, and provides a cool light.

Warm white / white 3000 – 4500 kelvin
- Often used in stores, offices, workshops etc. and is more suitable for the level of activity in these kind of surroundings.

Golden / warm white 2500 – 3000 kelvin
- Often used at home, as it provides a soft and comfortable color light.