Luminaires are commonly – but erroneously – referred to as "lamps". What is frequently called a "standard lamp" is actually a "free-standing luminaire". The lamp is the element that generates the light.

The term "luminaire" refers to the entire light fitting in which the lamp is affixed, operated and protected. The luminaire distributes and directs the light and guards against glare. Special attachments mounted on the luminaire to filter or colour the light alter the light colour and colour rendering property of the lamps.

Selecting luminaires

Chandeliers for the living room, gimbal spots in salesrooms and exhibition rooms, high performance pendant luminaires in the office: a wide range of quality luminaires is available today for every lighting application.

A basic distinction is made between indoor and outdoor luminaires. Other criteria for luminaire selection are:

• type and number of lamps
• structural type (open or enclosed)
• type of mounting (recessed, surface-mounted or suspended luminaires)
• installation site or location (wall, table, standard luminaires)
• lighting characteristics
• electrical characteristics guaranteeing reliable, trouble-free operation, including components necessary for operation: ballasts and igniters
• mechanical characteristics, such as reliability, degree of protection or fire safety features
• size, construction and design.