The term light color describes the impression, the mood of light. In order to give this subjectively perceived impression a quantitative framework, the color temperature, with the unit Kelvin (K), was created.
A simplified distinction is made between three color temperature categories
Depending on the area of application and the mood to be achieved, attention should be paid to the color temperature when selecting the light source:
To better illustrate the abstract unit Kelvin, here are four examples:
Our experience shows that if an incandescent lamp with a warm white light of 2,800° is replaced with an LED light source of 3,000° K, this light is often perceived as bluish. This is particularly true of 1st generation LED lamps. If you would like to achieve the warm white light of an incandescent lamp, please ensure that the Kelvin number is below 3,000° K. If you are interested in purchasing a luminaire with built-in LED technology and are still unsure about the light temperature, please contact us and we will be happy to inform you about the manufacturer-specific light temperature of the luminaire.
Colors are rendered most "realistically" in sunlight or incandescent light. LED lamps and halogen lamps come very close to this Ra value. This is important, for example, when illuminating pictures or at the workplace.
Light source | Color rendering index CRI |
---|---|
Sunlight, incandescent lamp | 100 |
LED lamps | 75-95 |
Metal halide lamps with ceramic burner | >90 |
Fluorescent lamps, five-band lamps | 70-85 |
Fluorescent lamps, three-band lamps | >80 |
Compact fluorescent lamps, energy-saving lamps | 80-89 |
Metal halide lamps | 65-96 |
Fluorescent lamps, standard lamps | 60-75 |
Source: wikipedia