Illuminating conception as it utilises to the constructed environment, also known as 'architectural illuminating conception', is both a scientific discipline and an art. General illuminating conception demands thoughtfulness of the quantity of useable light supplied, the energy exhausted, in addition to the esthetical impact furnished by the illuminating system.

(So Cal lighting)

Some constructions, like operative medical centers and sports buildings, are in the first place interested with supplying the suitable quantity of light for the related task. Some constructions, like storage warehouses and office blocks, are in the first place interested with economising money through the energy efficiency of the illuminating system. Different constructions, like gambling casinos and theaters, are principally interested with heightening the visual aspect and emotional impact of architecture through illuminating systems.

(Sunrise lighting)