The only restriction is your imagination
THE AGE OF THE LED
The LED has inspired the imaginations of light enthusiasts more than any other type of lamp before it. A far higher luminous efficiency, stable light colours, a very long service life and - last but not least - a more attractive cost situation all speak in favour of the professional use of this modern lamp technology for general lighting purposes.
Zoning is Key ...
People feel safe in a well-illuminated environment, with spatial dimensions and ambience more easily grasped. A well planned area will focus on gradations of light and dark, there will be no areas of dazzling brightness or complete darkness. Deliberately planned illumination will provide for darker areas, thus underlining the effect.
Particularly with architectural lighting, details show themselves to their best advantage with these illumination principles. Indoor and outdoor spaces can be structured by using specific light zones. These areas model the spaces and create an arc of tension for the viewer. This principle is comparable with daylight: illuminated and shaded areas in our environment help us to find our bearings and allow assessment of our spatial awareness.
General Information about Illumination
In the 1950s light planner Richard Kelly (1910-1977) defined a basic classification
General illumination - “Ambient luminescence”
Functional illumination - “Focal glow”
Lighting accents - “Play of brilliants”
General illumination (Ambient light) defines the environment with a light that is soft and uniform producing no hard shadows or contrasts. Outdoors, this light is found in car parks, pathways and streets where standards require specific degrees of illumination to be produced. Indoors, it represents the background light defining the dimensions of the room and the space being occupied.
Functional illumination (Task lighting) is used where the light is focusing on specific areas and where increased attention is required by the user, e.g. work-stations, kitchens, staircases. Formal light level requirements often apply in these areas.
Lighting accents (Accent lighting) illuminate focal points and set the stage for specific objects and architectural features. This lighting should be significantly brighter than general illumination in order to attract the attention of the viewer. However, this will only be achieved when accents are used sparingly and with a selective approach towards features to be highlighted.
The three types of illumination must not be considered in isolation or independently of each other. It is the balanced proportion of interplay and interaction that creates the most beneficial light and aesthetic appreciation.
“The more complex the problem, the greater the need for simplicity” – Alejandro Aravena, Pritzker Prize Winner 2016
Unshielded light is ideal as general illumination. Emitted by a light source and spreading unhindered in all directions, unshielded light is most pleasant when it is distributed softly across a room or an area. Care should be taken to avoid glare by using opal glass or light refracting covers.
Directed Light is selectively concentrated and emitted in one direction and is often achieved with additional reflectors. This lighting characteristic is popularly used in floodlights and stage lighting. Parts of buildings and structural details, for example a staircase or walkway, as well as trees and plants can also be selectively illuminated.
Depending upon the intended purpose it may be advisable to shield luminaires. For example, wall luminaires that are shielded to the front, selectively illuminate the wall and ground surfaces above and below providing glare-free, aeshetically pleasing soft light for the onlooker.