The architecture of light: architectural lighting design concepts and techniques. A textbook of procedures and practices for the architect, interior designer and lighting designer pdfdrive com

LIGHT FROM THE CEILING ONTO WALLS
The quickest change we can make to the generic downlighting tactic is to use light sources that can be aimed to direct light onto the vertical surfaces of a space, rather than simply straight down. These pieces of light go a long way to increase the overall perception of brightness in a space. Vertical lighting also expands a space and shows off the architectural boundaries.
Figure 11.1 Lighting vertical surfaces creates a distinct impression of brightness.
LIGHTING FROM THE GROUND UPWARD
We can implement light sources that recess into the ground or floor plane and create beams of light that wash the walls and cast pools of light up onto ceilings and canopies overhead. This tactic delivers a unique light quality that is rare in the natural world, where daylight from above is the norm. Upward directed light can contribute to the perception of height and verticality. It can also create a more intimate feeling if the light further reveals the ceiling above.
Figure 11.2 Lighting upward from the ground is at once unusual and creates a unique environment.
LIGHTING FROM THE WALL UPWARD
These sources are mounted to the surface of a wall or regressed into a wall and cast light up onto the ceiling plane above them. Light onto the ceiling plane opens up a space and increases the perception of volume. A bright ceiling lends a feeling of openness by mimicking a bright sky above. The even light from a glowing ceiling is sometimes all the light needed for a simple environment where little task or accent lighting is necessary.
Figure 11.3 Lighting from the wall to the ceiling adds volume and height to a space.
Figure 11.4 Lighting back onto the wall creates brightness without glare.
LIGHTING FROM THE WALL BACK ONTO THE WALL
We have a vast array of decorative and functional luminaires with shielded sources that paint light back onto the wall to which they are mounted. These differ from our purely-decorative sconces in that they wash light onto the wall, rather than simply glow. This treatment of light is useful where ceiling or floor mounted luminaires are
not an option. These luminaires can be mounted in rows and patterns to help the
flow of a long space or corridor.