Abstract: A lighting unit comprises a solid state lighting element (10). An upper housing (18) forms a light mixing chamber (20) over the solid state lighting element (10) and a loop-shaped antenna (22) is held by the upper housing (18), wherein the upper housing (18) comprises a reflective inner wall at least where it defines the mixing chamber (20) and said solid state lighting element (10) is inside said reflective inner wall. This makes use of the component which defines the mixing chamber (20) to hold a loop-shaped antenna (22) in place above the lighting element (10) and therefore away from the heat generated by the lighting element (10) and away from any metallic heat sink or heat spreading components (16).

Abstract: The present invention relates to a lighting assembly (100), comprising at least one light source (402), a heat sink (102) for dissipating heat generated during operation of the at least one light source (402), a lamp foot for connecting the at least one light source to a power supply, a control unit for controlling the at least one light source, and a first antenna arrangement (204) connected to the control unit and being electrically insulated from the heat sink (102) and the lamp foot (104), wherein the heat sink (102) and the lamp foot (104) form a second antenna arrangement (108), and the first antenna arrangement (204) is arranged in close vicinity of the second antenna arrangement (108) for allowing near-field coupling of a radio frequency signal provided to control the at least one light source (402).

Abstract: A lighting unit comprises a solid state lighting element (10). An upper housing (18) forms a light mixing chamber (20) over the solid state lighting element (10) and a loop-shaped antenna (22) is held by the upper housing (18), wherein the upper housing (18) comprises a reflective inner wall at least where it defines the mixing chamber (20) and said solid state lighting element (10) is inside said reflective inner wall. This makes use of the component which defines the mixing chamber (20) to hold a loop-shaped antenna (22) in place above the lighting element (10) and therefore away from the heat generated by the lighting element (10) and away from any metallic heat sink or heat spreading components (16).

Abstract: The invention provides a lighting device (104) and a luminaire (200). The lighting device comprises a light emitter (110) thermally connected to a heat sink (120). The lighting device further comprises a communication circuit (130) coupled to the heat sink for transmitting and/or receiving a communication signal. A first conductive part (122) of the heat sink comprises at least a first pole (142) of a dipole antenna (140) for transmitting and/or receiving the communication signal via the heat sink. This first pole of the dipole antenna may be induced via a primary radiator (160) to activate the gap (170).

Abstract: The invention provides a lighting device (100) and a luminaire (200). The lighting device comprises a light emitter (110) thermally connected to a heat sink (120). The lighting device further comprises a communication circuit (130) which is coupled to the heat sink for transmitting and/or receiving a communication signal. The heat sink is electrically conductive and comprising an opening (151) having dimensions for constituting an aperture antenna (150) for a particular frequency for directionally transmitting and/or receiving the communication signal of the particular frequency via the heat sink. In the embodiment shown, the lighting device comprises an aperture antenna (150) and a further aperture antenna (160).

Abstract: The invention provides a lighting device (100) and a luminaire (200). The lighting device comprises a light emitter (110) thermally connected to a heat sink (120). The lighting device further comprises a communication circuit (130) which is coupled to the heat sink for transmitting and/or receiving a communication signal. The heat sink is electrically conductive and comprising an opening (151) having dimensions for constituting an aperture antenna (150) for a particular frequency for directionally transmitting and/or receiving the communication signal of the particular frequency via the heat sink. In the embodiment shown, the lighting device comprises an aperture antenna (150) and a further aperture antenna (160).

Abstract: The present invention relates to a cultivating device designed for raising plants, comprising an at least substantially non-shape-retaining amount of substrate enveloped by a flexible substrate envelope which holds the substrate together during the raising and associated handling of a plant at least substantially in a shape-retaining form of a cube, a beam or a cylinder that is suitable for cultivating purposes. The substrate envelope is made of a water-permeable layer of material.

Abstract: The invention provides a lighting device (104) and a luminaire (200). The lighting device comprises a light emitter (110) thermally connected to a heat sink (120). The lighting device further comprises a communication circuit (130) coupled to the heat sink for transmitting and/or receiving a communication signal. A first conductive part (122) of the heat sink comprises at least a first pole (142) of a dipole antenna (140) for transmitting and/or receiving the communication signal via the heat sink. This first pole of the dipole antenna may be induced via a primary radiator (160) to activate the gap (170).

Abstract: A lighting device, such as a replacement lighting device, comprising a light source (LS), e.g. LEDs, for producing light along an optical axis (OA). A heat sink (HS) made of a material with an electrical resistivity being less than 0.01 ?m, e.g. a metallic heat sink being a part of the housing, transports heat away from the light source (LS). A Radio Frequency (RF) communication circuit (CC) connected to an antenna (A) serves to enable RF signal communication, e.g. to control the device via a remote control. Metallic components, including the heat sink (HS), having an extension larger than 1/10 of a wavelength of the RF signal are arranged below a virtual plane (VP) drawn orthogonal to the optical axis (OA) and going through the antenna (A). Hereby a compact device can be obtained, and still a satisfying RF radiation pattern can be obtained. The antenna can be a wire antenna or a PCB antenna, e.g. a PIFA or a IFA type antenna.

Abstract: The present invention relates to a lighting assembly (100), comprising at least one light source (402), a heat sink (102) for dissipating heat generated during operation of the at least one light source (402), a lamp foot for connecting the at least one light source to a power supply, a control unit for controlling the at least one light source, and a first antenna arrangement (204) connected to the control unit and being electrically insulated from the heat sink (102) and the lamp foot (104), wherein the heat sink (102) and the lamp foot (104) form a second antenna arrangement (108), and the first antenna arrangement (204) is arranged in close vicinity of the second antenna arrangement (108) for allowing near-field coupling of a radio frequency signal provided to control the at least one light source (402).

Abstract: A lighting device, such as a replacement lighting device, comprising a light source (LS), e.g. LEDs, for producing light along an optical axis (OA). A heat sink (HS) made of a material with an electrical resistivity being less than 0.01 ?m, e.g. a metallic heat sink being a part of the housing, transports heat away from the light source (LS). A Radio Frequency (RF) communication circuit (CC) connected to an an antenna (A) serves to enable RF signal communication, e.g. to control the device via a remote control. Metallic components, including the heat sink (HS), having an extension larger than 1/10 of a wavelength of the RF signal are arranged below a virtual plane (VP) drawn orthogonal to the optical axis (OA) and going through the antenna (A). Hereby a compact device can be obtained, and still a satisfying RF radiation pattern can be obtained. The antenna can be a wire antenna or a PCB antenna, e.g. a PIFA or a IFA type antenna.

Abstract: The invention relates to a spring suspension system comprising a helical spring, a sheath, and at least one centering and bearing cup, said spring having an end turn with at least a fraction thereof being covered by said sheath, and which is centered on and bears against said centering and bearing cup. The sheath presents an opening extending around the inner periphery of the sheath and facing towards the spring axis. The fraction of the end turn covered by the sheath is centered on and bears against the centering and bearing cup via spacer means between said sheath and said centering and bearing cup.

Abstract: The invention relates to a spring suspension system comprising a helical spring, a sheath, and at least one centering and bearing cup, said spring having an end turn with at least a fraction thereof being covered by said sheath, and which is centered on and bears against said centering and bearing cup. The sheath presents an opening extending around the inner periphery of the sheath and facing towards the spring axis. The fraction of the end turn covered by the sheath is centered on and bears against the centering and bearing cup via spacer means between said sheath and said centering and bearing cup.

Abstract: The invention relates to a method of manufacturing tubular films from a solution of a mixture if cellulose and proteins by extrusion blowing the solution over an air gap into a precipitation bath, and to the films produced with this method and their application.

Abstract: This invention relates to a process for the production of a cellulose molded body according to the amine-oxide process, which results in a molded body having reduced and effectively controllable fibrillation properties.

Abstract: The invention relates to the control of air flows for cooling the axial walls of a high-temperature combustion chamber in which the walls are provided with through holes forming multiple perforations, and involves arranging the multiple perforations so that the cooling airflow permeability of the walls in the downstream zone of the chamber decreases in the downstream direction in order to compensate for the effects of the increase in pressure drop due to variation of the gas flow velocity. The invention is particularly applicable to sharply convergent combustion chambers such as twin-head combustion chambers.

Abstract: The invention relates to a combustion chamber containing a number of aerohanical injectors mounted in the end of the chamber that connects the upstream end of two annular walls and which are supplied with fuel permanently during operation. The injectors are arranged in two concentric rows around the axis of symmetry and in pairs in longitudinal planes passing through the axis of symmetry. The injectors of the two rows are more or less equidistant from the outlet of the chamber and have axes directed toward the outlet. A carefully considered distribution of the primary holes, dilution holes and the air flow allows the emissions of oxides of nitrogen to be reduced.

Abstract: A system is disclosed for injecting air and fuel into a combustion chamber of a turbojet engine in which the system includes a fuel injector having an axis A, a first radial swirler located rearwardly of the fuel injector having a plurality of first air passages to direct air into the fuel emanating from the fuel injector in a first plane generally perpendicular to the axis A, a housing located rearwardly of the first radial swirler and forming a pre-mixing chamber bounded by a converging-diverging wall forming a venturi with a throat, the housing having a plurality of second air passages forming a second radial swirler to direct air into the pre-mixing chamber forwardly of the venturi throat in a second plane generally perpendicular to the axis A. The housing also has a plurality of third air passages forming an axial swirler, the second passages and the third passages alternating in a circumferential direction around the housing.

Abstract: A gas turbine engine combustion chamber bounded by inner and outer annular walls extending around a longitudinal axis of the engine and connected by an end wall, through which extend a plurality of fuel injectors, each with an intake air swirler. The outer annular wall has a plurality of first orifices arranged in a common plane and spaced apart in a circumferential direction such that each first orifice is circumferentially associated with a fuel injector and is located on one side of a radius line extending from the longitudinal axis and passing through the axis of the associated fuel injector, and a plurality of second orifices in the inner annular wall arranged in a common plane and spaced apart in a circumferential direction such that each second orifice is circumferentially associated with a fuel injector and is located on an opposite side of the radius line from the first orifice associated with the same fuel injector.

Abstract: A lighting device, such as a replacement lighting device, comprising a light source (LS), e.g. LEDs, for producing light along an optical axis (OA). A heat sink (HS) made of a material with an electrical resistivity being less than 0.01 ?m, e.g. a metallic heat sink being a part of the housing, transports heat away from the light source (LS). A Radio Frequency (RF) communication circuit (CC) connected to an antenna (A) serves to enable RF signal communication, e.g. to control the device via a remote control. Metallic components, including the heat sink (HS), having an extension larger than 1/10 of a wavelength of the RF signal are arranged below a virtual plane (VP) drawn orthogonal to the optical axis (OA) and going through the antenna (A). Hereby a compact device can be obtained, and still a satisfying RF radiation pattern can be obtained. The antenna can be a wire antenna or a PCB antenna, e.g. a PIFA or a IFA type antenna.