Light intensity

The light intensity of a lamp indicates the strength of the light in a certain direction, since light is never completely evenly distributed. In other words, it is part of the luminous flux, which shines in a certain direction - the room angle density of the luminous flux. The light intensity is abbreviated with the formula sign L and is in the unit Candela (abbreviated with CD).

The light intensity is always important when the light direction characteristics of a lamp is relevant because one Light source exudes different amounts of light in different directions. A ceiling spotlight, for example, sends the most light upwards, but part of the light will still get left and right, although this will be much less light. Here is both the type of lamp that deliberately steers the light and the attachment of the lamp. In addition, with all lamps that directed light Delay no Lumen Value, but instead the light intensity in Candela. These are light sources with reflectors.

In order to find out the different distribution of the light intensity of a lamp, there is the so -called light intensity distribution curve (abbreviated to LVK). It is a measure of the spatial distribution of the luminous flux.