Abstract: A method for providing a light output from a lighting system (100) capable of emitting light within a lighting system color gamut (202) in an x-y color plane, comprising the steps of: receiving (302) a light output target comprising a target color point (210, 219) and a target flux; comparing (304) the target color point with the lighting system color gamut (202); and if the target color point is outside of the color gamut: determining (310) a first approximation color point (212, 220) inside the color gamut based on a minimization of a distance in the x-y color plane between the target color point and the first approximation color point; determining (312) a highest possible flux achievable by the lighting system at the first approximation color point; if the highest possible flux achievable by the lighting system at the first approximation color point is equal to or larger than the target flux, control (309) the lighting system to provide light defined by the first approximation color point and the target fl

Abstract: A method for providing a light output from a lighting system (100) capable of emitting light within a lighting system color gamut (202) in an x-y color plane, comprising the steps of: receiving (302) a light output target comprising a target color point (210, 219) and a target flux; comparing (304) the target color point with the lighting system color gamut (202); and if the target color point is outside of the color gamut: determining (310) a first approximation color point (212, 220) inside the color gamut based on a minimization of a distance in the x-y color plane between the target color point and the first approximation color point; determining (312) a highest possible flux achievable by the lighting system at the first approximation color point; if the highest possible flux achievable by the lighting system at the first approximation color point is equal to or larger than the target flux, control (309) the lighting system to provide light defined by the first approximation color point and the target fl

Abstract: A color-adjustable light emitting arrangement (100) is provided, comprising •—a solid-state light source (101) adapted to emit light of a first wavelength range (L1); •—a wavelength converting member (102) arranged to receive light of said first wavelength range emitted by the light source and capable of converting light of the first wavelength range into visible light of a second wavelength range (L2); •—a narrow band reflector (103, 104) arranged in a light output direction from the wavelength converting member to receive light of said second wavelength range, said narrow band reflector being reversibly switchable between a first state in which the narrow band reflector reflects a first sub-range of said second wavelength range, and a second state in which the narrow band reflector has a different optical property. The spectral output of the light emitting arrangement is adjustable and may provide a desirable light spectrum for enhancement of different colors.

Abstract: A light emitting module (10), adapted to produce white output light having an emission peak in the wavelength range from 400 to 440 nm, comprises:•—at least one first light emitting element (110) adapted to emit light having an emission peak in a first wavelength range from 440 to 460 nm;•—at least one wavelength converting material (85) arranged to receive light emitted by said first light emitting element, and being capable of emitting light having an emission peak in the green to red wavelength range; and•—at least one second light emitting element (120) adapted to emit light having an emission peak in a second wavelength range from 400 to 440 nm. The module according to the invention provides white light of acceptable color rendering with a “crisp white” effect.

Abstract: Disclosed are systems and methods for providing multi-channel illumination. A reflector and at least four solid state light sources are operable to emit light. A plurality of combinations of the solid state light sources are identified, where each of the combinations is operable to emit light that matches a target color point. The combinations are ranked based on their respective luminous flux value, and at least one of the combinations is selected based on the rank. A duty cycle of a control signal of each light source of the selected combinations is determined to control light emitted from the reflector.

Abstract: An ignition circuit for generating high voltage pulses to a discharge lamp is provided with a switching element (SW1) to enable to stop generating said high voltage pulses when the lamp does not ignite or has ignited. The switching element (SW1) is connected between the input terminals (ground, Vdc) of a supply voltage and a parallel circuit of a capacitor (C1) and a series connection of a breakdown device (B1) and a primary winding (W1) of a transformer (T1). Switching the switching element (SW1) non-conductive prevents that the capacitor (C1) from charging.