Abstract: A light emitting device comprises a first group of one or more LEDs each configured to emit light having a blue color point in the 1931 CIE x,y Chromaticity Diagram, a second group of one or more LEDs each configured to emit light having a cyan or yellow color point in the 1931 CIE x,y Chromaticity Diagram, and a third group of one or more LEDs each configured to emit light having a red color point in the 1931 CIE x,y Chromaticity Diagram.

Abstract: A light emitting device (1) for illuminating a backlight device is provided. The device comprises an array (2) of light sources and at least one reflector (3a, 3b) arranged along an edge of the array (2) of light sources. The array is arranged with alternating first (4a, 5a) and second (4b, 5b) light sources, the first light sources (4a, 5a) emitting light of a first colour (G) and the second light sources (4b, 5b) emitting light of a second colour (P). The combined intensity of at least one light source (4a, 4b) arranged adjacent to the at least one reflector (3a, 3b) and its virtual image in the reflector is about 80-120% of the average intensity of the light sources (5a, 5b) of the same colour which are not arranged adjacent to the at least one reflector.

Abstract: A light emitting device (1) for illuminating a backlight device is provided. The device comprises an array (2) of light sources and at least one reflector (3a, 3b) arranged along an edge of the array (2) of light sources. The array is arranged with alternating first (4a, 5a) and second (4b, 5b) light sources, the first light sources (4a, 5a) emitting light of a first colour (G) and the second light sources (4b, 5b) emitting light of a second colour (P). The combined intensity of at least one light source (4a, 4b) arranged adjacent to the at least one reflector (3a, 3b) and its virtual image in the reflector is about 80-120% of the average intensity of the light sources (5a, 5b) of the same colour which are not arranged adjacent to the at least one reflector.

Abstract: A gas-discharge lamp (1) is described having two electrodes (4, 5) that project into the discharge vessel (3) of the lamp. The lamp further comprises an outer envelope (18) that surrounds the discharge vessel (3), with an airtight seal, while leaving an outer cavity (20) between itself and the discharge vessel (3) and that is filled with a gas at a pressure of not more than 1,000 mbar. In the outer cavity (20), there is a single conductor, electrically connected to one of the electrodes, that is in direct contact with the gas filling in the cavity (20) to allow a high-voltage pulse to be applied for igniting a discharge between the conductor and its surroundings. Also described are a method of operating a gas-discharge lamp of this kind and various methods of producing gas-discharge lamps of this kind.

Abstract: A high-pressure discharge lamp comprising an inner bulb (2) with a discharge space (3) containing an ionizable filling is described. Two electrodes (4,5) project from opposite sides into the discharge space (3). An outer bulb (13) surrounds the inner bulb (2) and a current-supply conductor (12) extends outside the outer bulb (13) for supplying an electric current to one of the two electrodes (5). A starter antenna (14) is connected to they current-supplyconductor (12). The starter antenna (14) passes through an opening (15) in the wall of the outer bulb (13) and extends towards the outer surface of the inner bulb (2).

Abstract: A gas-discharge lamp (1) is described having an inner envelope (2) comprising a discharge vessel (3) and two tubular sections (6, 7) arranged on the discharge vessel (3), having two electrodes (4, 5) that project from the tubular sections into the discharge vessel (3) and that, to enable them to be supplied with power, are electrically connected to respective electrical conductors (10, 11) that extend through their associated tubular sections (6, 7) and that are enclosed in the tubular sections (6, 7) with a gastight seal along a sealing section (8, 9) and having an outer envelope (18) that surrounds the discharge vessel (3), with an airtight seal, while leaving an outer cavity (20) between itself and the discharge vessel (3) and that is filled with a gas at a pressure of not more than 1,000 mbar.

Abstract: Multi-layer mirror for radiation with a wavelength in the wavelength range between 0.1 nm and 30 nm, comprising a stack of thin films substantially comprising scattering particles which scatter the radiation, which thin films are separated by separating layers with a thickness in the order of magnitude of the wavelength of the radiation, which separating layers substantially comprise non-scattering particles which do not scatter the radiation, wherein the separating layers are covered on at least one side in each case by an intermediate layer of a material which can be mixed with the material of the thin films and the material of the separating layers.

Abstract: When coating substrates it is frequently desired that the layer thickness should be a certain function of the position on the substrate to be coated. To control the layer thickness a mask is conventionally arranged between the coating particle source and the substrate. This leads to undesirable shadow effects. In addition, is has so far only been possible to obtain rotationally symmetrical thickness distributions. It is now proposed that masks should be used having apertures aligned according to a regular grid on the mask surface. Such a mask with a mask holder comprising a base frame (2), an intermediate frame (3) and a mask frame (4) which are joined one to the other by means of double hinges (5a, a′, b, b′), is moved arbitrarily in the mask plane. By this means arbitrary thickness distributions can be achieved when coating substrates at reasonable cost.