Two luminaires can produce the same amount of light – and still create two completely different spaces.
The difference often lies not in the output. But in where the light lands.
On the table? On the wall? On the ceiling? On one single object? Or broadly distributed across the entire space?
Light distribution initially describes the directions in which a luminaire emits its light.
Narrow. Wide. Direct. Indirect. Symmetrical. Asymmetrical.
For architecture, however, something else becomes decisive: which surfaces become bright – and which remain dark.
This is where spatial depth, orientation and hierarchy begin.
The terminology and exact beam angles vary between manufacturers. The underlying principles remain similar.
A very narrow beam is suitable for small objects or precise accents where as little stray light as possible should fall outside the target.
Wider beams can cover larger objects, tables or zones while still creating visible contrast.
Larger areas can be illuminated in a calm, coherent way without every individual beam becoming visually dominant.
Oval distributions work well for elongated objects, circulation routes, tables or linear architectural elements.
An evenly illuminated wall influences the brightness of the entire space while making its boundaries clearly visible.
Light first reaches a ceiling or wall and only enters the room through reflection. The illuminated surface becomes part of the optical system.
A common planning mistake is to look only at the specified beam angle of an optic.
The same beam changes with the distance to the illuminated surface.
The greater the distance, the larger the illuminated area becomes. At the same time, the available light is spread across a larger surface.
The aiming angle also changes the result. A spotlight directly above a table creates a different distribution from the same spotlight aimed at a wall or object from a distance.
Light distribution is therefore always a combination of optics, distance, position and aiming.
As the distance increases, the illuminated area grows. At the same time, illuminance on the target surface decreases.
When a beam is tilted, its shape changes on the target surface. A circle can quickly become an ellipse.
Matt, glossy, light or dark: the target surface influences how much light is reflected back into the room.
At Peak Ace, direct and indirect lighting components were integrated into a project-specific linear system.
The direct component brings light down into the areas of use. The indirect component illuminates the ceiling and distributes brightness more broadly throughout the room.
Both components can be controlled separately.
This allows the distribution of light to change with the use of the space – from focused work to reception or event settings.
The luminaire remains the same. The distribution changes the spatial effect.
Lighting design is often first considered in relation to horizontal surfaces.
Worktop. Table. Floor.
Yet vertical surfaces can be at least as important for the overall impression of brightness.
An illuminated wall often sits directly within the field of view. It makes the spatial boundary visible, reflects light back and can therefore make a room feel brighter and more open.
A brightly illuminated floor does not automatically create a bright-looking room.
Every illuminated surface reflects part of the light back into the room. The architecture itself therefore becomes part of the light distribution.
Direct lighting is often automatically associated with harsh light. Indirect lighting with soft light.
That distinction is too simple.
A wide, well-shielded direct light source can appear very calm. Poorly planned indirect lighting, on the other hand, can create uneven hotspots on ceilings or walls.
Precise.
Directed.
Contrast-rich.
Efficient for specific visual tasks.
Broader.
More diffuse.
Surface-oriented.
Dependent on reflection and material.
Project-specific pendant luminaires were developed for the workspaces at Impact Hub Berlin.
LED strips emit light upwards, creating an indirect component. Diffuse linear light sources simultaneously provide direct light downwards.
A textile material on the underside helps reduce disturbing glare.
The important point is not to combine as many types of light as possible.
The important point is that each direction performs a specific task.
Technically uniform lighting can be useful for certain visual tasks.
Applied across an entire space, however, maximum uniformity can remove exactly what makes architecture legible: differences.
Foreground and background. Route and destination. Exhibit and wall. Workplace and lounge.
Light distribution should therefore not always try to eliminate every difference in brightness.
Sometimes the contrast itself is part of the concept.
Enough light to keep the room and movement through it naturally legible.
Walls and other surfaces define spatial boundaries and support the overall impression of brightness.
Work and activity areas receive the light required for their specific tasks.
Individual elements deliberately come forward and create visual orientation.
At Burg Vischering, the light distribution is deliberately structured as a hierarchy.
Restrained indirect base lighting keeps the historic spaces legible. Directly aimed spotlights, by contrast, create precise accents on exhibits.
The surroundings do not need to be as bright as possible.
Quite the opposite: the lower base level is what makes the accents clearly visible.
Here, orientation is created not through more light, but through more precise distribution.
Even the right optic does not automatically work in every arrangement.
If beams are positioned too far apart, dark gaps can appear. If they overlap too strongly, unnecessarily high illuminance levels can result.
On walls, incorrect spacing can create visible scallops, hotspots or uneven gradients.
Optics and positioning therefore need to be designed together.
The light distribution of a single luminaire is only half the design. The other half is its relationship to all the others.
A space often needs several different distributions at the same time.
Broad light can illuminate a wall. A narrow spotlight can emphasise an object. Indirect light can activate the ceiling. A linear distribution can support movement through a space.
The number of lighting types is not what matters.
What matters is whether each one has a clear reason to exist.
Individual light sources become a spatial concept when their distributions respond to one another.
Light distribution describes the directions in which a luminaire emits light and which surfaces are illuminated as a result. It can, for example, be narrow, wide, direct, indirect, symmetrical or asymmetrical.
Common categories include Narrow Spot, Spot, Flood, Wide Flood, Oval Flood and Wallwash. There are also direct, indirect and combined distributions. Exact terminology and beam angles vary between manufacturers.
A Spot concentrates light more strongly and is suitable for precise accents. Flood distributes light over a larger area. The most suitable distribution depends on the size of the object, distance and desired contrast.
Wallwashing illuminates a vertical surface as evenly as possible. This makes the wall visible as a spatial boundary and can influence the overall impression of brightness in the room.
Walls and other vertical surfaces are often located directly within the field of view. Illuminating them can make a space appear brighter, more generous and more clearly structured.
As the distance increases, the illuminated area becomes larger while the available light is spread over a wider surface. Beam angle and mounting distance should therefore always be considered together.
No. Uniformity is important for certain visual tasks, but across an entire space it can create a flat result. Deliberate differences in brightness can create hierarchy, orientation and spatial depth.
Studio De Schutter develops lighting concepts in which light distribution, architecture and use are considered as one system.
Analyse surfaces. Understand sightlines. Select optics. Develop contrasts. Consider reflections. Coordinate light distributions.
So that individual light sources become one coherent spatial system.
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