Abstract: A lamp has an LED, a base, and a reflector. The base is rigidly connected to the LED and has a base contact surface. The reflector, which can be connected to the base, has a reflector contact surface, an entry opening, an exit opening, and a longitudinal direction (L) that runs from the exit opening to the entry opening. The reflector contact surface is arranged in the longitudinal direction (L) between the entry opening and the exit opening, and the base contact surface abuts the reflector contact surface. Thus, movement of the base and/or reflector towards each other is prevented when the reflector is connected to the base. The reflector is formed in such a way that a projection of the reflector contact surface in the longitudinal direction (L) of the reflector is free of undercuts.

Abstract: The invention relates to a spotlight, in particular for at least partially illuminating a stage, wherein the spotlight comprises a housing for accommodating a light source and a lens, through which light emitted by the light source can leave the housing when the light source is accommodated in the housing and which is a Fresnel step lens, which is characterized in that the Fresnel step lens has at least one spiral step on at least one side.

Abstract: A reflector luminaire with a light-emitting means and a reflector, which reflects light from the light-emitting means which is incident on said reflector in a predetermined emission direction and which has a rim (2) which points towards the emission direction makes it possible to perform particular lighting tasks, for example the uniform illumination of a rectangular illumination area by virtue of the fact that the reflector comprises a plurality of differently designed segments (7), which are calculated individually with respect to the light-emitting means for defined illumination of a predetermined area, and by the fact that the segments (7) are joined to one another by transition sections (8), by means of which the predetermined reflecting total surface area of the segments (7) is reduced by less than ¼.

Abstract: A lamp has an LED, a base, and a reflector. The base is rigidly connected to the LED and has a base contact surface. The reflector, which can be connected to the base, has a reflector contact surface, an entry opening, an exit opening, and a longitudinal direction (L) that runs from the exit opening to the entry opening. The reflector contact surface is arranged in the longitudinal direction (L) between the entry opening and the exit opening, and the base contact surface abuts the reflector contact surface. Thus, movement of the base and/or reflector towards each other is prevented when the reflector is connected to the base. The reflector is formed in such a way that a projection of the reflector contact surface in the longitudinal direction (L) of the reflector is free of undercuts.

Abstract: The invention relates to a discharge vessel of a quartz glass for discharge lamps with a diffusion barrier inner layer of silicon oxide, which as a single layer is applied and/or is generated on the inner surface as well as to a method for generating and/or applying such a diffusion barrier inner layer and to the use of such a discharge vessel.

Abstract: A reflector luminaire with a light-emitting means and a reflector, which reflects light from the light-emitting means which is incident on said reflector in a predetermined emission direction and which has a rim (2) which points towards the emission direction makes it possible to perform particular lighting tasks, for example the uniform illumination of a rectangular illumination area by virtue of the fact that the reflector comprises a plurality of differently designed segments (7), which are calculated individually with respect to the light-emitting means for defined illumination of a predetermined area, and by the fact that the segments (7) are joined to one another by transition sections (8), by means of which the predetermined reflecting total surface area of the segments (7) is reduced by less than ¼.

Abstract: The invention relates to a reflector, in particular for discharge luminaires, in the case of which at least two facets direct the light from an upper and a lower region of the discharge lamp in the same direction.

Abstract: A plasma lamp having a lamp bulb (1) which contains a material which is suitable for plasma formation with microwave excitation radiation, having a supply line (9) for supplying the microwave excitation radiation to the lamp bulb (1) and having a reflector (11), which at least partially surrounds the lamp bulb (1), for directing the light which is emitted from the plasma in the lamp bulb (1), wherein the lamp bulb (1) is arranged within a microwave resonator (5) such that a high microwave field strength is achieved in the area of the lamp bulb (1), and wherein the microwave resonator (5) has metallic walls (6, 4, 7), at least one wall section (7) of which is designed to be light-transmissive with an electrically conductive shielding structure, allows a compact design and an improved light yield in that the reflector (11) is arranged within the microwave resonator (5), and in that the microwave resonator (5), together with the reflector (11), is matched to optimum energy introduction into the lamp bulb (1).

Abstract: A high performance luminaire having at least one lamp (1) and a reflector (2), partially surrounding the lamp (1), for focusing to a directed beam the light emitted by the lamp (1), the reflector (2) having an internal reflecting surface (3) which includes regions with different requirements because of being differently spaced from the lamp (1), permits an optimization of the reflector (2) during an optimization of its production costs by virtue of the fact that the reflector (2) comprises at least a first partial reflector (5) and a second partial reflector (6) which lie next to one another at an abutting edge (11), and whose reflecting surfaces (9, 10) together form the internal reflecting surface (3) of the reflector (2).

Abstract: The invention relates to a light reflector comprising a reflective surface having facets at least in sections, and a region for arranging at least one luminous means, wherein facets in a first region, closer to the region for arranging at least one luminous means, the region close to the luminous means, have a cylindrical shape, and facets in a second region, more remote from the region for arranging at least one luminous means, the region remote from the luminous means, have a spherical shape.

Abstract: The invention comprises an optical arrangement for illumination purposes, in particular for a stepped lens spotlight, comprising a stepped lens with a light-diffusing element, in particular a diffusing screen, in which the diffusing screen is arranged in a first region and the stepped lens is arranged in a second region, and in which, with the change in the shape of the light impinging on the optical arrangement and/or the size of the light illuminating the optical arrangement, it is possible to set the aperture angle of the light emerging from the optical arrangement, in particular between two limit values, a smaller ?Sp and a larger ?F1.