Illuminance
Indicates how much luminous flux hits an area of one square meter, measured in LUX (lx). Emax@1m = 100 lx means that at a distance of one meter from the luminaire, a luminous flux of 100 lumens hits an area of one square meter.
Control gear
The operation of LED modules is critically influenced by voltage and current supply. Control gear ensures optimal light through the correct definition of electrical parameters, high lifespan, and provides an interface for electronic control.
DALI
The Digital Addressable Lighting Interface is a protocol for digital control of lighting control gear. Luminaires with DALI control gear can, for example, be integrated into a building automation system.
Color temperature
Indicates in the unit Kelvin (K) whether a light source emits warm white or cool white light. Warm white light is below 3300 K (e.g., 60W incandescent lamp: 2700 K), cool white light is above 5000 K (e.g., sunlight). In between, the light is called neutral white.
Color rendering index (Ra)
Shows how faithfully the light reproduces colors (perfect color rendering: Ra=100). Incandescent lamps reach nearly 100, energy-saving lamps 50-90, and LEDs up to 97. Indoor lighting in the EU must have at least a color rendering index of 80.
Uniformity of illuminance:
The uniformity (Uo) of illuminance on a defined surface is calculated from the ratio Ēmin / Ēm of the minimum and average illuminance.
Human Centric Lighting
Means that the human is at the center of light planning. Here, the biological effectiveness of light is used. Bright, neutral to cool white light has an activating effect, increases concentration, and thus helps reduce errors.
LED
Abbreviation for light-emitting diode, in German Leuchtdiode. An electronic component that can light up in different colors depending on the type. Due to their high efficiency and long lifespan with very good color rendering, LEDs are the lighting of the future.
Luminance
Luminance is the measure of the brightness impression that the eye has of a luminous or illuminated surface, measured in candela per unit area (cd/m2). It affects visual performance and comfort. As luminance increases, visual acuity, contrast sensitivity, and thus the performance of eye functions improve.
Light spectrum
The light spectrum is a special part of the electromagnetic spectrum that can be perceived by the human eye. The wavelength range of the light spectrum extends from approximately 380 to 750 nm. Adjacent to the visible light spectrum for humans, the electromagnetic spectrum includes the UV range at shorter and the IR range at longer wavelengths, which can be perceived by other living organisms.
UV LIGHT:
Light is the part of electromagnetic radiation that we can see with our eyes. The light spectrum (wavelengths of visible light) ranges between 380 and 780 nanometers. UV light (ultraviolet) is invisible electromagnetic radiation to humans with wavelengths shorter than visible light.
Unified Glare Rating
The Unified Glare Rating is a method for uniformly evaluating the glare of luminaires worldwide. For different applications, legal limits apply for glare; for example, UGR must not exceed 19 for office workplaces.
RGB LEDs
In RGB LEDs, three different chips (a red, a green, and a blue one) are combined in one LED. By appropriately controlling them, all mixing colors can be achieved through the individual chips. For example, mixing the red and green chip gives yellow light.
RGBW LEDs
With RGBW LEDs, either an additional white pixel is added to the RGB pixels, or additional white LEDs are placed next to the RGB LED. This white LED is then separately controllable, allowing both dimming and often adjusting the color temperature of the white light.
Visual task
The more challenging a visual task is, the higher the level of illumination must be. The visual task is determined by the following factors: color contrasts, the size of details, and the speed and duration with which the contrasts are perceived.