Ljusdistributioner

Ljusdistributioner, often translated as light distributions or lighting distributions, refers to the spatial pattern in which light is emitted or reflected from a source. This pattern describes how luminous intensity varies with direction. Understanding light distributions is crucial in fields like lighting design, optics, and photometry.

Different light sources and luminaires exhibit distinct distribution patterns. For example, a bare incandescent bulb might produce a near-omnidirectional light distribution, radiating light in almost all directions. In contrast, a spotlight is designed to concentrate light into a narrow beam, resulting in a highly directional distribution. Reflectors, lenses, and diffusers within a luminaire are engineered to shape and control the light distribution.

In lighting design, light distributions are classified using standardized systems, such as the IES (Illuminating Engineering Society) classification. These classifications help designers select appropriate luminaires for specific applications, ensuring effective and comfortable illumination. For instance, a task-oriented lighting situation might require a downward-focused distribution, while ambient lighting could utilize a more widespread distribution. Photometric data, often presented as polar diagrams, graphically illustrates the light distribution of a luminaire, showing how luminous intensity changes at different angles. This data is essential for calculating illuminance levels and assessing lighting performance.