Abstract: A downlight comprises a light source for generating a light to be emitted downwards by the downlight, a mounting ring for retaining the downlight on a ceiling element, and a reflector for reflecting the light generated by the light source. A holding device which retains the reflector on the mounting ring is designed in such a way that the reflector is retained on the mounting ring merely by lying thereon.

Abstract: The invention relates to a recessed light having a base body for holding a light source and a dome-shaped reflector which can be detachably fastened to the base body by means of a connecting element. The connecting element is designed such that an optical element for influencing the emission of light is accommodated and fixed when the base body and the reflector are fitted together.

Abstract: The invention relates to a heat sink for a light source, in particular an LED light source, said heat sink comprising an annular outer body and a central body which is formed by a separate element and is arranged in a central opening of the outer body.

Abstract: The invention relates to a system for operating an LED-based light source which system comprises an operating device that is designed to transform the input-side mains voltage to a supply voltage, and a control unit for the light source, which control unit is connected to the operating device and operates the LEDs using the supply voltage obtained from the operating device. The control unit is arranged in a module which is designed as a unit separate from the light source and which is connected thereto by means of a preferably flexible cable.

Abstract: The invention relates to a recessed light having a base body for holding a light source and a dome-shaped reflector which can be detachably fastened to the base body by means of a connecting element. The connecting element is designed such that an optical element for influencing the emission of light is accommodated and fixed when the base body and the reflector are fitted together.

Abstract: A downlight comprises a light source for generating a light to be emitted downwards by the downlight, a mounting ring for retaining the downlight on a ceiling element, and a reflector for reflecting the light generated by the light source. A holding device which retains the reflector on the mounting ring is designed in such a way that the reflector is retained on the mounting ring merely by lying thereon.