U.S. Philips Corporation

Manfred Kiesling

Werner Schlagheck

Jaak M Geboers

Josef Rothkranz

The illumination device comprises a housing, a lampholder, a reflector and an electric lamp having a base rigidly connected to its light-diffusing lamp vessel. A light source within the lamp vessel is disposed substantially coaxially with an optical axis of the reflector. The reflector is polygonal in cross sections transverse to its axis and shapes the light generated into a beam, the intensity of which increases from I.sub.o along the optical axis to a value of 105 to 130% thereof at an angle of 5 to 25% to the axis. Scenes illuminated by the device yield evenly exposed photo, film and video images.

Illumination device and luminaire for use therein

The electric lamp has a lamp vessel (1) having a pinch seal (2) having two major side faces (7, 8) and two minor side faces (9, 10), the latter being provided with grooves (11, 12). The grooves (11, 12) are widened and deepened towards a respective major side face (7, 8), into which they merge. The lamps can be arranged in a holder by a purely translatory movement and this holder is then elastically deformed. The holder has rigid holding members, which engage into a respective groove and can move therein by subjecting the lamp to a rotation.

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Oirsbeek, Netherlands

Manfred Kiesling