Abstract: A cooling apparatus with a cooling space which is especially suited for storing perishable foods is given. In the cooling apparatus there is a UV radiation source which is suited to emitting electromagnetic radiation from the ultraviolet region, and in its operation the cooling space is irradiated with this radiation. Via the electromagnetic radiation it is fundamentally possible to kill microorganisms such as bacteria and molds and thus to disinfect the refrigerator and the free surfaces contained in the cooling space as well as the air of the cooling space.

Abstract: The invention relates to a high-pressure discharge lamp, in particular a vehicle headlight high-pressure discharge lamp, having a lamp base, in whose interior is arranged a starting apparatus for the purpose of starting the gas discharge in the high-pressure discharge lamp and which is provided with an electromagnetic shield, and having a discharge vessel which has an end near to the base and an end remote from the base, a power supply line protruding out of the end, remote from the base, of the discharge vessel being passed back to the lamp base and being electrically coupled to the electromagnetic shield. The electromagnetic shield is preferably connected to the ground reference potential of an operating device of the high-pressure discharge lamp.

Abstract: A phosphor composition for a low-pressure discharge lamp with a high light yield and a high color temperature contains phosphors which emit in the red wavelength region, including yttrium oxide doped with europium or gadolinium-zinc-magnesium pentaborate doped with cerium and manganese, phosphors which emit in the green wavelength region including lanthanum phosphate doped with cerium and terbium and/or cerium-magnesium aluminate doped with terbium and/or cerium-magnesium pentaborate doped with terbium, and optionally a phosphor which emits in the blue wavelength region of the barium-magnesium aluminate doped with europium type.

Abstract: An arrangement for supplying a constant current to at least one LED includes a current source (2; 2a, 2b) with an output capacitor (3) connected across the terminals of the current source. An output inductor (4) is associated with the output capacitor (3) whereby the current supplied flows through the inductor (4). A smoothing resistor (5) is preferably connected in parallel to the output inductor (4).

Abstract: Circuit with a switch-off device for the operation of light sources The invention relates to a circuit with a switch-off device for the operation of light sources (Lp), have the following features: a self-commutated half-bridge inverter having a series circuit of an upper electronic switch and a lower electronic switch (T1, T2), which are joined at a half-bridge midpoint (M) and are connected between a supply voltage (+) and a ground potential, a start capacitor (C3) which is joined via a trigger element (DIAC) to a control electrode of the lower electronic switch (T2), and a switch-off device having an input (E) and an output, which are configured and connected so that they discharge the start capacitor (C3) if a switch-off signal is applied to the input (E). The switch-off device contains a time delay.

Abstract: A color adaptive lighting system for creating a mixture of light that lies on the Planck's radiation course, includes: a housing (2; 17; 27); a first light source in the form of at least one low-pressure gas discharge lamp; a second light source in the form of at least two light-emitting diodes (LED's) (9, 10; 21, 22; 33, 34); at least one reflector (3; 17; 27) that is placed behind the low-pressure gas discharge lamp (4; 18, 28) in the direction of emission of the lighting system; optionally a diffusing disc and/or cover disc (13, 14; 19, 20), and; a ballast for operating the light sources and for controlling the intensity of the light sources. The at least two LED's (9, 10; 21, 22; 33, 34) are arranged in the lighting system in such a manner that the main direction of emission of the LED's (9, 10; 21, 22; 33, 34) points toward the reflector.

Abstract: Apparatus for safely connecting a lamp to an equipment voltage ground, includes a rectification circuit for rectifying the power supply alternating voltage into a direct voltage, and an oscillating circuit for converting the direct voltage into alternating voltage for driving the lamp to work. The oscillating circuit includes a DC-blocking capacitor, a oscillating inductor and an oscillating capacitor orderly connected in series, and one end of the DC-blocking capacitor is connected to the output rectification voltage of the rectification circuit, and another end is connected to the oscillating inductor, while one end of the oscillating capacitor is connected to the equipment voltage ground, and another end is connected to the working voltage terminal of the lamp. The ground terminal of the lamp is electrically connected to the equipment voltage ground through a parallel circuit formed of a switch and a high impedance capacitor.

Abstract: The structural unit for an electric lamp, with an elongated, ceramic inner bulb, with a central part, is closed at two sides by capillaries, the inner bulb having a lamp axis, and a luminous means being accommodated in the inner bulb, the inner bulb being surrounded by an outer bulb, and the outer bulb having two ends, which are joined directly to the capillaries of the discharge vessel via in each case one joining means.

Abstract: A protective device for a lamp, especially a high-pressure xenon discharge lamp or high-pressure mercury vapor discharge lamp, includes a pressurized lamp vessel and a protective envelope which surrounds the lamps in at least some sections, can be fixed to the lamp by two closures that engage around lamp shafts, and is made of a gas-permeable fleece.

Abstract: An illumination arrangement comprising a plurality of light-emitting semiconductor components (1), arranged in a row, a diffuser (2), which is illuminated by the light-emitting semiconductor components during operation of the illumination arrangement, intermixes light emitted by the semiconductor components during operation and has a light coupling-out area (200) remote from the semiconductor components, and two mutually opposite, reflective longitudinal side faces (3), between which the row of light-emitting semiconductor components is arranged, which run perpendicular or obliquely with respect to the light coupling-out area, and which reflect at least part of the light emitted by the light-emitting semiconductor components during operation in the direction toward the light coupling-out area.

Abstract: The invention relates to a dielectric barrier discharge lamp (1) of coaxial double tube configuration. Arranged inside the inner tube (3) is an inner electrode (6) that is designed in the form of a flexible, electrically conductive brush. The brush-type electrode (6) can be produced relatively easily and can be introduced effectively into the inner tube (3) because of the flexibility.

Abstract: An illumination unit comprising an LED light source is disclosed, which has a first optical element disposed downstream of the LED light source in an emission direction, an electronic control unit, and a second optical element disposed downstream of the first optical element. The LED light source, the first optical element and the electronic control unit are arranged in a common housing, and the housing is covered by the second optical element.

Abstract: The incandescent lamp, which uses a carbon cycle process, is equipped with a luminous body which, together with a fill, is introduced in a vacuum-tight manner into a bulb, the luminous body including a metal carbide, the melting point of which is above that of tungsten. The distance between the luminous body and the wall of the bulb is less than 18 mm, with a first cycle process, which is attributed to the carbon, being effected by the use of carbon and hydrogen as fill additive, and a second cycle process, which is attributed to the metal, being effected by the use of halogen.

Abstract: A light bulb (1) is provided at the end thereof with an adapter (13) made from ceramic polymer, fixed in a multi-piece socket base (12).

Abstract: Disclosed is a halogen incandescent lamp having a lamp vessel, which is sealed at one end and in which at least one luminous element is accommodated, a vessel section 42 being in the form of a side reflector which extends only over a subregion of the lamp vessel circumference. A light-exit window 40 adjoins this vessel section 42 in the circumferential direction. According to the invention, the light-exit window 40 is comparatively slightly curved in cross section, the vessel section 42 forming the side reflector bulging out away from the light-exit window 40. This bulged-out region is preferably provided with a kidney-shaped constriction 46.

Abstract: A high-pressure discharge lamp, in particular a mercury-free high-pressure discharge lamp for a vehicle headlight, has a lamp base (1) and an axially symmetrical discharge vessel (30), in whose discharge space (300) an ionizable filling, containing metal halides, and electrodes (31, 32) are arranged for producing a gas discharge. The discharge vessel (30) is provided with transparent, partial frosting (37), which is limited to a section of the inside or outside of the discharge vessel (30) extending over part of the discharge vessel circumference, this section having a well-defined position with respect to the lamp base (1). Moreover, a simple production method is proposed for partial frosting (37) which is preferably arranged on the inside of the discharge vessel (30).

Abstract: A semiconductor lamp having a light-emitting semiconductor device, the semiconductor device comprising a carrier and at least one light-emitting semiconductor component on the carrier, and a heatsink. The heatsink has a first main face, the semiconductor device is located adjacent to the first main face, and the carrier faces the first main face. The semiconductor device is thermally coupled to the heatsink, and the heatsink has at least one feedthrough for electrical connection of the semiconductor device.

Abstract: The invention relates to a high-pressure discharge lamp that has an electric power consumption of less than 50 watt and comprises a discharge vessel (1?) that is sealed on two sides and is made of a translucent ceramic material as well as electrodes (2?, 3?) which are disposed inside the discharge vessel (1?) and are used for generating a gas discharge. Xenon and metal halides are arranged within the discharge vessel (1?) which is embodied as a ceramic tube that has a uniform maximum inner diameter of 1.2 mm while the minimum cold filling pressure of the xenon amounts to 0.8 megapascal.

Abstract: A device for emitting a first and a second electromagnetic radiation (13, 23, 53) via a radiation coupling-out surface (5) along a device beam path. A first radiation-emitting arrangement (1) has at least one first radiation-emitting component (10) which emits the first electromagnetic radiation (13). A second radiation-emitting arrangement (2) has at least one second radiation-emitting component (20) which emits the second electromagnetic radiation (23). Furthermore, the device has a radiation-directing element (3), wherein the radiation coupling-out surface (5) is arranged in the beam path of the second radiation-emitting arrangement (2) and the radiation-directing element (3) directs the first electromagnetic radiation (13) to the radiation coupling-out surface (5).

Abstract: Disclosed is a low-pressure discharge lamp, particularly a compact fluorescent lamp comprising at least one discharge vessel that is inserted in a base. The base and the discharge vessel are connected via a joining material. According to the invention, the base is provided with at least one recess via which the joining material can be introduced after the discharge vessel has been inserted.