Abstract:
A computing system (200) and a method of generating data for enabling external control of a lighting system (100) comprising a plurality of light sources (101, 102) based on third party content are provided. The computing system is configured to receive a plurality of registrations of lighting systems and, for each of the registered lighting systems, information including indications of positions of at least some of the light sources of the lighting system, and to map the information onto a coordinate system. A coordinate-based representation is generated based on the mapping. Further, the computing system is configured to receive third party content from an external third party content provider (300), select at least one of the registered lighting systems, and generate data for controlling the selected lighting system. The generation of data is based on the coordinate-based representation related to the selected lighting system and the third party content.
Abstract:
There is provided an illumination device (100, 150, 200, 300) comprising: a periodic plasmonic antenna array (114), comprising a plurality of individual antenna elements (106) arranged in an antenna array plane, the plasmonic antenna array being configured to support surface lattice resonances at a first wavelength, arising from diffractive coupling of localized surface plasmon resonances in the individual antenna elements; a photon emitter (152) configured to emit photons at the first wavelength, the photon emitter being arranged in close proximity of the plasmonic antenna array such that at least a portion of the emitted photons are emitted by a coupled system comprising said photon emitter and said plasmonic antenna array, wherein the plasmonic antenna array is configured to comprise plasmon resonance modes being out-of plane asymmetric, such that light emitted from the plasmonic antenna array has an anisotropic angle distribution.
Abstract:
This invention relates to a lighting device for illuminating a task area. The lighting device comprises at least one light-source and a reflector arrangement comprising reflecting surface portions arranged to receive light from the light-sources and to redirect the light towards the task area. Furthermore, the reflecting surface portion comprises a plurality of curved segments. The light sources and the reflector arrangement are arranged such that in the cross-section, a distance from the light-source to the reflecting surface portion increases along the cross-section in a direction from a first end to a second end of the reflecting surface portion, the second end being closer to the task area than the first end. Furthermore, a radius of curvature of the reflecting surface portion varies non-monotonically along the cross-section, whereas the radius of curvature within each curved segment varies monotonically in the same cross-section.
Abstract:
The current invention relates to a housing (10) for securing a recessed fixture in a support (20), the housing (10) comprising at least one spring (12) resting on a portion of the side wall (10a) when loaded, and extending outwardly from the side wall (10a) when released so as to secure the housing (10) in the support (20); the housing (10) further comprises at least one releasable retention member keeping the spring (12) loaded over a given length of insertion of the housing (10) into the support (20). The housing (10) can notably be used in a recessed light fixture.
Abstract:
Disclosed is a heat sink (10) for a lighting device (200), the heat sink comprising a base portion (20) for engaging with the lighting device; an end portion (30); a first array of spatially separated first cooling fins (40) extending from the base portion to the end portion; a second array of spatially separated second cooling fins (50) extending from the base portion to the end portion; wherein the first array is arranged opposite the second array. A lighting device including such a heat sink and a method of manufacturing such a heat sink are also disclosed.
Abstract:
A light emitting device (102, 202) comprising a light source (104) having a light exit surface, a wavelength converter (106) configured to convert light from a first wavelength to a second wavelength, said wavelength converter having a light exit surface (110) and a light entrance surface, a heat sink (100) and an optical coupling element (112), arranged in thermal connection with said heat sink (100) and said wavelength converter (106), wherein said optical coupling element (112) is selected to have a refractive index lower than a refractive index of said wavelength converter (106). The optical coupling element (112) will allow for an efficient heat transfer from the wavelength converter (106) to the heat sink (100) while avoiding loss of light from unwanted surfaces.
Abstract:
Methods and apparatus for adjusting at least one lighting parameter based on user action. For example, methods and apparatus adjust one of a minimum set point and a maximum set point in response to a user manipulation of a component of a light management system (10, 110). The adjusted at least one of the minimum set point and the maximum set point are adjusted based on a measured interior illuminance value after the user manipulation. The set points may be indicative of user desired levels of interior illuminance.
Abstract:
The invention relates to a lighting device (1) comprising a housing (8) with a light source connector for a LED (11) and a reflective collimator (3) and a refractive collimator (9) as well as to a method for their manufacture. The reflective collimator (3) comprises a plurality of reflective segments (4, 4', 5, 5', 6, 6', 7, 7'), which are spaced apart from each other by means of air slits suitable for dissipation of heated air. The segments (4, 4', 5, 5', 6, 6', 7, 7') are adapted to reflect laterally emitted light generated by the light source (11) towards a direction which is substantially parallel to said main direction. Lighting devices according to this invention may have a compact design and an improved dissipation of the heat generated by the LEDs.
Abstract:
The invention relates to a power supply device (3) for supplying power to an electrical consumer (2) having a variable power consumption in a power distribution system (1), particularly in a DC power distribution system for lighting applications, wherein the power supply device (3) is output current controlled and is adapted to provide the output current depending on the power consumed by the electrical consumer (2). Since the output current is not constant, but controlled depending on the power consumed by the electrical consumer (2) being preferentially a lamp, the output current can be adapted to the actually consumed power, thereby allowing for an improved efficiency of distributing the power in the power distribution system (1). In particular, if less power is consumed by the electrical consumer (2), a lower output current can be provided, thereby reducing losses in cables and electrical connectors of the power distribution system.
Abstract:
Described are a system and methods for estimation of a remaining safe driving time and/or distance, preferably in a drowsiness detection system of a vehicle driven by a driver. The system comprises at least a processing unit (12), a clock (14) and a speed data providing device (16) as well as a user interface (22) via which the processing unit (12) can determine and acquire the necessary information for estimating the remaining safe driving time and also distance, if preferred.