Abstract: A power-rail adapter (39) for mechanical and electrical connection of a light fixture (10) and/or of an operating unit (15) of the light fixture with a power rail (28), comprising at least a switch shaft (41) that can be pivoted between a removing position in which the adapter is removable from the power rail and an installing position in which the adapter is fixed to the power rail is illustrated and described. A specific feature is amongst others that a coding stud (66) is provided on the switch shaft and that a coding groove (77) is provided at the power rail in which the coding stud can be introduced only with a single relative orientation of the adapter (39) with respect to the power rail (28) with pivoting of the switch shaft from the removing position into the installing position.

Abstract: A light fixture has a reflector having a part-elliptical surface and having at least one focal point at which is provided an LED set behind a main shield that prevents light from passing directly out of the light through a light-output plane. The reflector surface is shaped as an ellipse outside the apex point and adjacent the one focal point of the ellipse at which the LED is located. An arcuate portion of the ellipse segment defines the light-output plane, and the reflector surface extends along a longitudinal straight line. The LED, a straight longitudinally extending free edge of the main shield, and a straight longitudinally extending free edge of the reflector surface or a longitudinally extending straight edge of a secondary shield positioned generally at the outer free edge of the reflector surface lie in a common plane.

Abstract: A light fixture is shown and described is for illuminating building surfaces or portions thereof, comprising a generally cup-shaped arcuate reflector (10) having an interior (21) provided with a lamp emitting light at least partially reflected or dispersed by an inner surface (27) of the reflector to the building surface or portion to be illuminated, the inner surface of the reflector being subdivided into a plurality of structured segments (15a, 15b, 15c, 15d, 32, 38). The novelty is that the segments each have a surface (31a, 31b, 31c, 36, 37, 40) that is curved toward the interior.

Abstract: A device for mounting a lamp on a stationary support has a housing and first and second pivots on the housing for securing the housing to the support for pivoting of the housing on the support about first and second nonparallel axes. A first brake on the housing can free the housing to rotate on the support about the first axis or hold it to prevent the housing from rotating on the support about the first axis. Similarly, a second brake on the housing can free the lamp to rotate on the housing about the second axis or hold it to prevent it from rotating on the housing about the second axis. A single actuating element on the housing is connected to both of the brakes for jointly displacing them between the freeing and holding positions.

Abstract: A lamp assembly having a lens plate covering the opening and spaced from the lamp. The lens plate is provided with a multiplicity of microlenses such that the lens plate and lamp assembly generates a well defined light cone with a sharp demarcation between the dark region outside the light cone and the illuminated region within the light cone and the illumination within the light cone is homogeneous.

Abstract: A device (10) is shown and described for at least indirectly connecting a light fixture with a power track (11) and having a housing (38) holding at least one angularly movable control shaft (21 or 22) and formed of at least two housing shells (34a and 34b) formed of dielectric material, in particular plastic. The novelty is that at least a first housing shell (34b) is provided with a retaining formation (36a, 36b, 36c, 36d, 36e, 36f, or 36g) that cooperates with the control shaft (21 or 22) and/or with a second housing shell (34a).

Abstract: An insert part can fit into the slot of a power track. A shaft extending into the insert part is pivotal about a shaft axis in the housing between a use position and a nonuse position. A one-piece conductive contact element rotationally fixed to the shaft has a contact projecting radially from the shaft and engageable with one of the power-track conductors when the insert part is fitted to the slot and the shaft is in the use position, and a one-piece plug-type terminal extending generally parallel to the axis. Formations unitarily formed with the contact element and the shaft axially and rotationally fix the contact element on the shaft. A hookup wire provided with another plug-type terminal mates with the terminal of the contact element.