The lamp is the light-producing component of a – for example – work light or headlight, a tail light or a rotating beacon. The lamps of traditional lights are generally divided into incandescent lamps, Halogen lamps and Xenon lamps and are generally replaceable. However, …

Laser technology is increasingly being used in warning systems, for example to project lines, symbols or zones directly onto the hall floor. Similar to warning zone lights with LED technology, these warning systems do not create any physical barriers, but are visually very striking and robust against soiling or light conditions. Laser classes divide lasers according to various criteria. …

LED is the abbreviation for Light Emitting Diode. An LED is a semiconductor device that converts electrical energy into light. When an electric current flows through the semiconductor, energy is emitted in the form of light. This process is known as electroluminescence. …

LED degradation refers to the gradual decline in an LED’s performance over its operational lifetime. For lighting applications, the decline in luminous flux is of particular significance. …

In left-hand traffic (LHT), vehicles drive on the left side of the road.

A lens is an optical component that influences light through refraction. When light strikes the interface between two transparent materials with different indices of refraction, its direction of propagation changes. The precisely shaped surfaces of a lens allow light to be focused, diverged or otherwise directed. …

In vehicles designated as LHD (or left-hand drive), the driver sits on the left side. These vehicles usually drive in right-hand traffic (RHT).

See left-hand traffic (LHT).

The licence plate illumination usually consists of a small light above or two lights to the left and right of the licence plate. For road approval, rear licence plate lighting is always required to ensure that the licence plate can be read even in the dark.

A Light is a lamp that directs its beam specifically in certain directions to illuminate a traffic, driving or working area. The light produced by the light source is shaped by optical components such as reflectors or lenses. This creates a beam pattern specific to the respective application. …

A lighting diagram usually shows the beam pattern of work lights or headlights from a bird’s eye view. The illumination is often given in Lux at different distances to illustrate the brightness and range of the light. Such diagrams help to compare lights and find the right lighting solution for the respective application.

Lighting group is the term used for the unit comprising the lamp, parabolic reflector and the protective/diffusion disc of a light.

No lamp can use the entire absorbed energy for radiating light. LED lamps are, of course, much more efficient than the traditional halogen– or xenon lamps, but even with them, there are various losses that must be taken into consideration. …

The low beam is a lighting function of headlights. It serves to illuminate the road ahead of the vehicle whilst simultaneously limiting the glare experienced by other road users. …

Lumen (lm) is the unit of measurement for luminous flux. Put simply, luminous flux describes the total amount of visible light emitted by a light source. Unlike electrical power in watts, the photometric quantity of luminous flux takes into account the human eye’s varying sensitivity to different wavelengths. …

Put simply, luminance describes how much light is emitted by a luminous or illuminated surface in a particular direction. It is one of the quantities in photometry and is denoted by the symbol Lᵥ. …

Luminous flux is a photometric quantity and describes the total amount of visible light emitted by a light source. It takes into account the fact that the human eye perceives light of different wavelengths with varying degrees of sensitivity. The symbol for luminous flux is Φᵥ, and its unit of measurement is lumen (lm). …

Lux (unit symbol lx) is the unit in which the illuminance is measured. This unit sets up a direct correlation of the brightness of a light source (in Lumen or Candela) to the actual brightness that this light source can reach on a surface. Here, 1 Lux describes the brightness of a …