Correlated colour temperature or CCT describes the colour impression or colour temperature of a light source compared to the ideal radiation of a black-body. Nowadays, the most common and frequently used light sources don't work with thermal radiation, as the incandescent bulb does. This means that the emitted light does not follow the form of the black-body curve.

The meaning of colour temperature or light colour describes the impression of coldness or warmness of the lighting effect. Measured in Kelvin (K) the colour temperature moves on a scale of 1000 to 10 000. The redder a colour is the cooler or lower it is on a scale, the bluer colours are colder and on the hotter end. This scale is in line with the colours of a flame. The hotter a flame burns, the more it tends towards blue.

Lighting for conference settings needs to comply with the norms for workplace lighting, namely the DIN 12464 and the ASR. As the way we work has changed over the past few years, so have the requirements for workplaces and workplace lighting.

Chip on board (COB) is a method of circuit board manufacturing in which the integrated circuits are wired bonded directly to a printed circuit board, and covered by a blob of epoxy. COBs containing arrays of light-emitting diodes have made LED lighting more efficient.