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Wall

From scenic wall illumination through to vertical visual tasks

Wall lighting can fulfil a number of tasks. Firstly, it can be aimed at fulfilling vertical visual tasks on the walls, whether this be informative material such as notice boards, presentational objects such as paintings or merchandise, architectonic structures or the surface of the wall itself. Wall lighting can, however, also be aimed solely at presenting the wall in its capacity as the surface delineating the room; finally, wall illumination can be a means of indirect general lighting for a room.

Wall, 3m

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Wall, 3m Wall, 3m Wall, 3m Wall, 3m Wall, 3m Wall, 3m Wall, 3m Wall, 3m
Wall, 3m Wall, 3m Wall, 3m Wall, 3m Wall, 3m Wall, 3m Wall, 3m Wall, 3m

Point-form light sources

Linear light sources

Wall lighting can be performed using point-form or linear luminaires. Wallwasher spotlights offer flexible adjustment for different wall heights. Wallwashers are characterised by the even progression of brightness along the wall. Lens wallwashers have special lens reflector systems. Washlights project the light evenly onto the wall surface, while maintaining the downlight effect on the room. Linear light sources for wallwashing with fluorescent lamps provide a perfectly even brightening of the wall. Using a Softec lens, an extremely even illumination of the whole wall can be achieved, even in the higher area right up to the ceiling. The perimeter illumination out of a haunch is positioned directly on the wall. It produces a grazing light effect and emphasises the surface texture.
The evenness of the wallwashing is only secondary here.

Vertical illumination emphasises the wall faces in terms of their physical makeup.
The room is made to look bigger by brightening its walls and ceiling etc.
Point light sources make the wall surface much more vivid, whereas with linear luminaires a higher uniformity is achieved.

Lighting criteria for walls:
- uniformity of the lighting

Wall, 3m Wall, 3m

The offset from the wall should be at least one third of the room height.
Alternatively, the offset from the wall is where a 20 degree line projected from the base of the wall intersects the ceiling.
An optimum evenness is obtained when the luminaire spacing is the same as the offset from the wall.
Wallwashers only develop their optimal evenness as of a minimum number of three luminaires.
The position of a wallwasher in a room corner should lie on the 45° line

Washlighting illumination for vertical surfaces of:
- museums
- exhibitions
- trade-fair stands
- sales and representational areas

Preferred luminaire groups
- wallwashers
- washlights
- lens wallwashers
- double washlights
- perimeter luminaires

Wall, 5m

Wall, 5m Wall, 5m Wall, 5m Wall, 5m Wall, 5m Wall, 5m
Wall, 5m Wall, 5m Wall, 5m Wall, 5m Wall, 5m
Wall, 5m Wall, 5m Wall, 5m Wall, 5m Wall, 5m

Point-form light sources

Linear light sources

In high rooms the luminaires are beyond the direct field of vision. As the room height increases the brightness of the wall decreases, if the lighting remains constant. Wallwashers are characterised by the even progression of brightness along the wall. Lens wallwashers have special lens reflector systems. Linear light sources for wallwashing with fluorescent lamps provides a perfectly uniform brightening of the room. Using a Softec lens, an extremely even illumination of the whole wall can be achieved even in the higher area right up to the ceiling. The perimeter illumination out of a haunch is positioned directly on the wall. It produces a grazing light effect and emphasises the surface texture. The evenness of the wallwashing is secondary.
Vertical illumination emphasises the walls – or other room limits – in terms of their physical make-up. The room is made to look bigger by brightening the wall faces. Point-form light sources make the wall surface much more vivid while with linear luminaires a higher uniformity is achieved. As the room height increases the distance of the luminaire to the wall must be increased. The reductionof the mean illuminance in higher rooms can be compensated for by having a higher lamp power and by increasing the number of luminaires. Wallwashing only produces an even brightness on matt surfaces.

Lighting criteria for high walls
- uniformity of the lighting

Wall, 5m Wall, 5m

Whereas for normal room heights the luminaire spacing is the same as the offset from the wall, in higher rooms it must be reduced to compensate for the otherwise sinking illuminance.
The offset from the wall is where a 20 degree line projected from the base of the wall intersects the ceiling.
The position of a wallwasher at the end of the wall should lie on the 45 degree line.

Washlighting illumination for vertical surfaces in:
- museums
- exhibitions
- trade-fair stands
- sales and representational areas

Preferred luminaire groups
- wallwasher
- washlights
- lens wallwashers
- perimeter luminaires

Wall with texture

Wall with texture Wall with texture Wall with texture Wall with texture Wall with texture
Wall with texture Wall with texture Wall with texture Wall with texture
Wall with texture Wall with texture Wall with texture Wall with texture

Point-form light sources

Linear light sources

Wallwashing
Point-form wallwashers make surface textures clearly visible. When using linear light sources the wall face appears even and the surface texture is only emphasised to a limited extent.
Grazing light wallwashing
Point-form light sources at a short offset from the wall, i.e. wall-mounted luminaires, produce their own light pattern that, admittedly, does accentuate the texture, but does not permit an even wallwashing.
Grazing light wallwashers at a short offset from the wall most vividly enhance the surface texture, thereby accentuating the materials used.

The smaller the offset from the wall, the clearer the surface texture is enhanced. When using grazing light, the evenness of the wall illumination is greatly reduced.

Preferred luminaire groups
- wallwashers
- washlights
- lens wallwashers
- perimeter luminaires

Projects on this guide topic