||One of the earliest compact fluorescent lamps to feature electronic control gear was this creation of Osram's Italian plant at Bari. It was offered in three ratings of 18, 24 and 32W, intended to replace 75, 100 and 150W incandescent. The lamp is based on the form of an ordinary circline fluorescent tube, but of reduced dimensions, and equipped with integral ballast and a bayonet or screwbase cap, to directly replace incandescent lamps. The Lumilux Interna phosphor creates warm incandescent-like light of good CRI.
The shape of the lamp serves a special purpose, in that most of its light is radiated in the vertical plane. It is thus especially well suited to pendant luminaires, which are large enough to accept the dimensions of this lamp. The lamp found numerous applications also in the illumination of tables in restaurants, small office and conference tables etc. The lightweight electronic gear furthermore made this lamp a preferred choice in rise-and-fall pendant luminaires which were popular in domestic lighting during the 1980s.
One of its undoubtable features however, was its eye-catching circular appearance. Whereas other compact fluorescent lamps attempted to mimic the small light source of incandescent lamps, this version capitalised on its unique appearance and many architectural lighting installations called for the installation of this lamp as a part of the design. However as with all products offering a unique appearance, the market quickly tires of the new trend and this was ultimately the reason for the downfall of the circular fluorescent lamp. After a decade or two of success, lighting designers wishing to express their individuality on a new installation soon turned their sights on alternative lamps.