The light of discharge lamps is generated by sending an electrical discharge through a gas or fluid medium.
Low-pressure discharge lamps, like fluorescent lamps, differ from high-pressure discharge lamps, like halogen-metal halid lamps.
The latter provide a high output of light with authentic colours and compact size combined with low energy consumption and durability.
They are not only ideally suited for outdoor illumination, but are being increasingly employed in commercial and private spaces.