摘要:
There is described a lighting system. The lighting system comprises a voltage source (12) configured to generate a constant direct current adapted to supply a plurality of lighting modules (20a..20n). Moreover, the system comprises a number n of electronic switches (SWa..SWn), wherein each electronic switch (SWa..SWn) is configured to selectively connect a respective lighting module (20a..20n) to the voltage source (12) as a function of respective drive signals ( PWMa..PWMn ) generated by a control unit (102). A current sensor (104) is connected in series with the voltage source (12), in order to detect a measurement signal (CS) indicative of the current provided by the voltage source (12). Specifically, the control unit (102) varies the drive signals ( PWMa..PWMn ) , such that: - in a first instant, all lighting modules (20a..20n) are connected to the voltage source (12); and - during a sequence of (n - 1) instants, each time a different set of lighting modules (20a..20n) is connected to the voltage source (12). The control unit (102) then determines the current flowing through all lighting modules (20a..20n) as a function of the measurement signal (CS) detected in the first instant, and determines the currents which flow through the various lighting modules (20a..20n) as a function of the measurement signals (CS) detected during the sequence of instants.
摘要:
A light converter for a light source is disclosed, having a substrate and a light converting layer disposed thereon for receiving laser radiation and converting the same into visible light. A sensor is functionally integrated with the light converting layer for purposes of detecting the condition of the light converting layer and modifying an operation of the laser radiation source in response thereto.
摘要:
The invention relates to a tracking system (10) comprising at least one light source (12) which is designed to send a clear identification information (LID1) associated with the light source (12) using a light signal; and a mobile communication unit (ME1) having a camera (18), wherein the mobile communication unit (ME1) is designed to receive with the aid of its camera (18) the identification information (LID1) sent by the at least one light source (12); wherein the tracking system (10) further comprises at least one light sensor (20) having a camera (22); a central control unit (24) which is at least coupled to the at least one light sensor (20); wherein, upon receipt of the identification information (LID1), the mobile communication unit (ME1) is further designed to send an activation signal (LID1') to the central control unit (24) for activating a tracking operation, the activation signal (LID1') comprising correlated data with the received identification information (LID1); wherein the central control unit (24) is designed to determine on the basis of the activation signal (LID1') transmitted by the mobile communication unit (ME1), at which position the mobile communication unit (ME1) is arranged and which at least one light sensor (20) is arranged in such a manner relative to the position of the mobile communication unit (ME1) that the mobile communication unit (ME1) can be detected by the camera (22) of said light sensor. The central control unit (24) is furthermore designed to actuate the camera (22) of the at least one detected light sensor (20) for providing image information with teh aid of its camera (22) to the central control unit (24), in order to determine and identify a carrier of the mobile communication unit (ME1) at the determined position; wherein the central control unit (24) is further designed to actuate at least one light sensor (20) which is coupled to said central control unit for tracking the identified carrier of the mobile communication unit (ME1).
摘要:
A method of producing lighting devices includes: - providing a channel-shaped housing (18), - arranging in said housing (18) a lighting module (10) with at least one electrically-powered light radiation source (14), e.g. a LED source, and circuitry (16) coupled (120) with the light radiation source(s) (14), the light radiation source(s) (14) and the circuitry (16) facing towards the opening of the channel-shaped housing (12), - providing a light-permeable cover (22, 26) that covers the light radiation source(s) (14) and leaves the associated circuitry (16) uncovered, and - providing a sealing mass of light-impermeable material (20) which masks the circuitry (16), with the light radiation emitted from the light radiation source(s) (14) being adapted to propagate through the light-permeable cover (22, 26).
摘要:
The invention relates to a reflector element (6) comprising a plastic substrate (1), a silver layer (3), a first barrier layer (4) that is an oxide layer at least 15 nm thick and is arranged over said silver layer (3), and a second barrier layer (5) that is arranged over said first barrier layer (4) and comprises a siloxane, the thickness of the second barrier layer (5) being at least 250 nm and at most 450 nm. The invention also relates to a method for producing said reflector element (6).
摘要:
A support structure (10) for lighting devices, e.g. LED lighting devices (M), includes: - an electrically insulating core layer (12) having a first (12a) and a second (12b) mutually opposed surfaces, with mounting locations (M) for electrically-powered light radiation sources (L) on the first surface (12a), - a network of electrically conductive lines (14) printed on said first surface (12a), at least some of said electrically conductive lines (14) extending between the mounting locations (M) and fixed locations (16) on the first surface (12a), and - electrical distribution lines (18) of electrically conductive material on the second surface (12b) of the core layer (12), and - electrically conductive vias (20) extending through core layer (12) and electrically coupling the electrical distribution lines (12) on the second surface (12b) with the electrically conductive lines (14) at said fixed locations (16) on the first surface (12a).
摘要:
Eine Beleuchtungsvorrichtung soll zuverlässiger überprüfbar sei. Dazu wird eine Beleuchtungsvorrichtung mit einer Leuchteinrichtung (1) einschließlich einer oder mehreren Lichtquellen und einer Spiegeleinrichtung einschließlich eines schwenkbaren Spiegels (2) zum Lenken von Licht der einen oder mehreren Lichtquellen bereitgestellt. Der Spiegel (2) lenkt das Licht bei einem definierten ersten Schwenkzustand (Z1) in einen ersten Raumwinkelbereich, in dem eine betriebsgemäße Nutzung des Lichts erfolgt, bei einem definierten zweiten Schwenkzustand (Z2) in einen von dem ersten verschiedenen zweiten Raumwinkelbereich, in dem das Licht auf eine Absorbereinrichtung (6) der Beleuchtungsvorrichtung gelenkt ist, und optional bei einem dritten Schwenkzustand (Z3) in einen zwischen dem ersten und zweiten Raumwinkelbereich liegenden dritten Raumwinkelbereich, wobei der dritte Schwenkzustand (Z3) stets in einem stromlosen Zustand der Spiegeleinrichtung eingenommen ist. Schließlich weist die Absorbereinrichtung (6) einen Sensor (7) auf, mit dem eine Funktionsfähigkeit der Beleuchtungsvorrichtung überprüfbar ist.
摘要:
Ein Leuchtmodul (1) für eine Leuchtkette mit mindestens einer Lichtquelle (2,3,4) und mit mindestens einem Stromanschluss (9) zur Versorgung der mindestens einen Lichtquelle weist einen Kühlkörper (8)auf.