Lumen

Lumen is a unit of luminous flux in the SI system, equal to the luminous flux emitted in one second by a point source in a solid angle of 1 steradian at a luminous intensity of 1 candela.

Lumen is used to measure the total luminous flux emitted by a light source. The more lumens, the brighter the light. Lumen measures the amount of visible light that the human eye perceives.

Lumen depends on the angle of the light source. For a point source of one steradian, the lumen is numerically equal to the luminous intensity in candelas.

Lumen is widely used to characterize light sources such as incandescent, LED, fluorescent and discharge lamps. The more lumens a lamp has, the brighter and more efficiently it illuminates the room.

Lumen designation in the SI system: lm.

Lumen (lm) is a unit of luminous flux in the SI system, equal to the luminous flux emitted in one second by a point source in a solid angle of 1 steradian at a luminous intensity of 1 candela.

Lumen characterizes the total luminous flux emitted by a light source in all directions. The higher the lumen value, the brighter the source shines.

Lumen is used to measure the luminous flux of various types of lamps - incandescent, halogen, LED and others. Specifying the number of lumens allows you to compare the brightness of different light sources.

Thus, lumen is an important unit of measurement of luminous flux, widely used to characterize light sources.

What is a lumen?

Lumen is a unit of luminous flux that is used to measure the amount of light emitted by light sources. Lumens are also used to determine the brightness of lamps or other light sources. In the SI system, a lumen is defined as the luminous flux that travels in one second from a source point, provided that it is emitted into a solid angle of one steradian and the luminous intensity is one candel. The unit of lumen is designated by the letter "lm".

Using Lumens

Today, lighting systems use lumens to determine