What Is a Lumen? Simple Guide to Picking the Right Light Bulb

The Croatian Encyclopedia states that the lumen of the unit of measurement (sign lm) of luminous flux a derived unit of the International System of Units. It is determined by the radiant flux emitted into the corner of one steradian by a point light source, to which the luminous intensity in all directions of space is one candela, i.e., lm = cd sr.

Simply put, lumen is a unit of measurement for the total luminous flux emitted by a light source in all directions.

This concept plays a key role in understanding lighting and ensures that the space is well lit and comfortable to stay in.

Lumen numbers

The discovery of lumens dates back to the 17th century. century when scientists first began to study the nature of light. But the concept of lumens as a measure of light intensity was formally developed much later, with the development of modern light science.

Lumen is used to measure the total amount of light emitted by the source. This is especially important when choosing bulbs or other light sources for different purposes.

For example, if you want to illuminate the room well, it is important to choose a light source with a larger number of lumens. On the other hand, to create a subtle and relaxing atmosphere, you might choose a light source with a smaller number of lumens.

Lumen has applications in different areas. In everyday life, it is used to evaluate the brightness of various light sources, including lamps, projectors, and other light sources. It is also important in the lighting industry, where lighting systems are designed and manufactured for various purposes.

More lumens don’t always mean better lighting

It is worth noting that more lumens do not always mean better lighting. In addition to the amount of light, it is important to take into account factors such as light distribution, light color, and lighting purposes. For example, for reading, it is important to have a light source with enough lumens, but at the same time, a good distribution of light to avoid shadows and eye strain.

Various factors can affect the perception of lumens in a particular environment, such as reflections, the colors of walls and surfaces, and the quality of light sources. Properly selected lights can improve productivity, safety, and comfort in a space.

So, lumen is a key concept in the world of lighting. Understanding how lumen is applied in different situations allows us to better manage the light around us and create a comfortable and functional environment.