Abstract: The invention relates to a light for illuminating a useable area, in particular a merchandise display area, comprising an adaptive illumination unit which has a number of coloured light-emitting diodes which emit light in the basic colours of a colour system, a sensor system directed towards the useable area which detects a light spectrum reflected by the useable area and/or objects lying on the useable area, and a control unit which is coupled to the sensor system and is designed to determine at least one dominant colour from the reflected light spectrum detected by the sensor system, and to actuate the light-emitting diodes to emphasise the at least one dominant colour such that they emit a light spectrum of a pre-specified colour temperature and/or intensity, in which the portion of the at least one dominant colour is increased.

Abstract: The present invention relates to a reflector for producing an elliptical light image, which is elongate in form, defines a reflector axis (X) and has pairs of side wall reflectors (3) and face wall reflectors (4) lying opposite one another which on their lower side delimit a light outlet opening, the face side reflectors (4) and the side wall reflectors (3) being in the form of simply spherically curved reflector segments, the reflector segments (3, 4) of each pair of reflectors having the same curvature radius, and the angle of inclination ? enclosed by the face wall reflectors (4) in the longitudinal section with the reflector axis (X) being 1.5 to 3 times as large as the angle of inclination ? enclosed by the side wall reflectors (3) with the reflector axis (X).

Abstract: The invention relates to a light fixture for producing an oblong luminous surface with a horizontal illuminant and a box reflector which has a curved reflector surface and planar reflector surfaces to the side enclosing the curved reflector surface, the horizontal illuminant being disposed at right angles to the planar reflector surfaces to the side, which is characterized in that the curved reflector surface is designed to produce the oblong luminous surface at right angles to the horizontal illuminant, and the planar reflector surfaces to the side are designed to sharply define the longitudinal sides of the oblong luminous surface.

Abstract: A lighting installation has two light fixtures which each have an illuminant in a horizontal burning position and a box reflector surrounding the illuminant. The box reflectors of the two light fixtures are each designed to produce half bat wing light distributions. The two light fixtures are positioned parallel to one another such that they together produce bat wing distribution and the two light fixtures can be adjusted in relation to one another.

Abstract: The invention relates to a luminaire having a reflector that comprises an upper reflector rear wall and reflector side walls that define a lower light exit opening, and having a high-pressure discharge lamp having an burner that is arranged inside the reflector, there being present in the reflector rear wall at least one cutout that enables air and radiation to exit from the reflector, and in the region of the reflector side walls, openings being present that enable ambient air to enter the reflector.

Abstract: The invention relates to a UV-C sterilizing lamp for the treatment of a medium with UV-C radiation in order to kill the microorganisms contained therein by means of at least one UV-C emitter (2). The emitter has an elongated emitter foundation (3) and at least one electrical connection (4), and a base (5) holding the UV-C emitter (2). The at least the emitter foundation (3) of the UV-C emitter (2) is surrounded by a flexible protective cover (6), which is radiolucent to UV-C radiation. The invention furthermore relates to a sterilizing system with at least one UV-C sterilizing lamp of the invention.

Abstract: A light fixture has an illuminant in the form of a high pressure discharge lamp, which is surrounded by a reflector. At least one additional light source radiates single-colored light into the reflector. The additional light source is positioned so that it radiates the single-colored light towards the high pressure discharge lamp. An optical system is provided which focuses the light radiated by the additional light source such that it hits the burner of the high pressure discharge lamp in its entirety.

Abstract: A lighting installation has two light fixtures which each have an illuminant in a horizontal burning position and a box reflector surrounding the illuminant. The box reflectors of the two light fixtures are each designed to produce half bat wing light distributions. The two light fixtures are positioned parallel to one another such that they together produce bat wing distribution and the two light fixtures can be adjusted in relation to one another.

Abstract: The invention relates to a light fixture for producing an oblong luminous surface with a horizontal illuminant and a box reflector which has a curved reflector surface and planar reflector surfaces to the side enclosing the curved reflector surface, the horizontal illuminant being disposed at right angles to the planar reflector surfaces to the side, which is characterised in that the curved reflector surface is designed to produce the oblong luminous surface at right angles to the horizontal illuminant, and the planar reflector surfaces to the side are designed to sharply define the longitudinal sides of the oblong luminous surface.

Abstract: The invention describes an interior luminaire, in particular for the illumination of merchandise display surfaces, having a transparent luminaire shade (2) and an optical system (5, 6) with a light-emitting means (5), which is characterized in that the optical system (5, 6) is positioned in a light-emitting means space (3) provided above the luminaire shade (2) and radiates light into the luminaire shade through a light entry opening (2a) on the upper side thereof; and that an inwardly projecting, diffusely reflecting flange (9), which reflects at least a portion of the emerging light back into the luminaire shade (2), is provided at the lower rim of the luminaire shade (2).

Abstract: The invention describes a lighting unit having a light source and having a wavelength-dependent filter device with a selectively transmissive filter and/or a selectively reflective mirror reflector in order, for the purpose of emphasizing the body color of an object to be illuminated, to filter out color components of the light coming from the lamp whose color locus on the chromaticity diagram is located opposite the color locus of the body color that is to be emphasized on a connecting line passing through the achromatic point (complementary color), which is characterized in that the filter device additionally filters out a portion of the color component of the same body color that is to be emphasized.