Abstract: The present invention relates to a device and method for controlling the color point of an LED light source (50). Color point control is a most interesting product feature both for white and colored LED light sources. In known methods for the color control of RGB LED light sources use is made of flux and color sensors. However, there are difficulties with respect to sensing quickly changing ambient light, deeply dimmed colors, coordinating the measurements with the switching of the LEDs, and controlling the color in LED light units comprising a number of independent LED lamps, e.g. segmented wall washers and LCD backlights. It is proposed according to the present invention to control the color of the LED light source (50), using a model-based feed forward approach. Factors relating the parameters controlling the LED currents to the brightness for the different colors (and segments) are stored and used for open loop control. A slow-running procedure continuously measures and updates these factors.

Abstract: The invention relates to light-emitting diodes (O-LED). In particular, it relates to the driver electronics needed for these devices. An organic electroluminescent device is provided, which has a hermetically closed very flat housing. To improve the functionality of an O-LED, considerably reduce the height of an O-LED module and allow a cost-effective mass production, the driver circuit and the electronic driver elements or the printed circuit board (PCH) with the electronic driver elements are incorporated into the cover plate of the device.

Abstract: The invention concerns an OLED device with a cathode 1, an anode 2 and an active stack 3, wherein the anode 1 is segmented into a plurality of anode segments 8 each defining an OLED segment 4. Further, a capacitance measuring unit 12 is provided which is arranged for measuring a plurality of capacitance coefficients between two anode segments 8 and/or between an anode segment 8 and surrounding earth, respectively. This way, an OLED device for illumination purposes with a reliable proximity sensing function is achieved.

Abstract: The invention relates to an illuminated tiling system (100) which comprises back panels (10) with at least one electrically conductive layer (12, 13), plugs (20) with projections (21, 23) that electrically contact the conductive layer(s) (12, 13), and light-tiles (30) with (O)LEDs that can be fixed to the plugs. For an easy tiling, dummy-tiles can first be tiled together with conventional tiles (2) and later be replaced with the light-tiles (30).

Abstract: The invention relates to a Reflector pole (1), which is used as a road marker, a road boundary, a sign pole or for similar applications related to road or pedestrian traffic, comprising a main body (2), featuring at least one light active field (3). According to the invention the light active field (3) comprises an organic light emitting diode (OLED) (4).

Abstract: The invention relates to a mirror for personal use, with a lighting system for illuminating at least part of a person (9) being situated in front of the mirror. According to the invention, a position detector for detecting the position of the person (9) in front of the mirror is provided. Further, the lighting system comprises multiple lighting elements which can be actuated independently from each other in dependence of the signal of the position detector. It is especially preferred that the mirror is comprised of an array (8) of OLEDs (1) which can be selectively actuated to function as a mirror element or as a lighting element, respectively, in dependence of the position of the person (9) in front of the mirror. Further, it is preferred that these OLEDs (1) also act as capacitive proximity sensors for the position detector. Thus, a versatile mirror with a good mirror image without blinding is provided.

Abstract: Devices (10) for driving loads (20) such as organic/inorganic light emitting diodes are provided with drivers (11) for driving the loads (20), with converters (12) for converting first parameter signals defining parameters of the loads (20) into second parameter signals each being defined by one bit per time interval, and with digital controllers (13) for controlling the drivers (11) in response to the second parameter signals. The converter (12) may comprise a comparator circuit (40) and a timer circuit (41) for comparing the first parameter signal with a reference signal and for generating the second parameter signal having a respective first or second value of two possible values in case of a respective first or second comparison result. The parameter may be a current flowing through or light emitted by at least a part of the load (20). The driver (11) may be a buck/boost/buck boost/fly back converter.

Abstract: The present invention relates to a modular electric system with a base module (2, 11) comprising a substrate (3, 12), a power supply (40), power/data transmission means (4, 16) and holding means; at least one load module (7, 20, 30) comprising an cc electric load, a power/data receiving means (8, 26) and a holding means, said load module (7, 20, 30) being adapted to be placeable on said substrate (3, 12) in first and second positions, wherein in said first position (connecting position) the transmission means (4, 16) of said base module interact with said receiving means (8, 26) of said load module (7, 20, 30) and in said second position (repelling position) interaction of said transmission means (4, 16) and said receiving means (26) is not allowed or possible.

Abstract: The present invention relates to a LED light source comprising at least one layer of light emitting material (3), in particular organic light emitting material, sandwiched between two electrode layers (2, 4). At least one of the electrode layers (2, 4) is structured to form a pattern of electrode segments (5), each electrode segment (5) being in electrical contact with at least three of its nearest neighbor electrode segments (5) via direct electrical connections (6), which are designed to act as electrical fuses between the electrode segments (5). The invention allows the design of a large area LED light source having a homogeneous light density without the risk of failure of larger light emitting areas.

Abstract: Devices (1) comprising liquid crystal displays (2) are given a reduced size by providing the liquid crystal displays (2) with liquid crystal display panels (21), with backlights for improving performances of the liquid crystal display panels (21), which backlights comprise organic light emitting diode backlights (23), and with backlight drivers (24) for driving segments of the organic light emitting diode backlights (23). This way diffusers can be avoided. The segmented organic light emitting diode backlights (23) are in the form of flat substrates and produce white light naturally.

Abstract: The present invention relates to a control module (30) for a lighting system, which lighting system (10) comprises a base module (11) with at least two parallel electrodes (16) and at least one light module (20) coupled with said electrodes (16), said control module comprising: a controller (30) adapted to control at least one parameter of the at least one light module (20), and a holding member (28) adapted to removably hold said control module in engagement with said electrodes (16) of said lighting system (10). It also relates to a lighting system and a light module (20) for such a lighting system.

Abstract: The invention relates to a light emitting device (10), comprising a stack of layers (15) of a substrate, with a basic layer (20), a first electrode layer (30) and a second electrode layer (40), wherein an organic light-emitting layer (50) is sandwiched between the first electrode layer (30) and the second electrode layer (40), the organic light-emitting layer (50) is emitting an artificial light (51), the basic layer (20) is covered by a retroreflective member (60), structured in a first section (61) and a second section (62), a plurality of retroreflective elements (70,70?) are embedded in the first section (61), each retroreflective element (70,70?) reflects an ambient light (80,80?) falling onto a front side (65) of the retroreflective member (60) back in a direction of an origin of the ambient light (80,80?), the second section is transparent to the artificial light (51) falling onto a back side (66) of the retroreflective member (60).

Abstract: The invention relates to an illuminated window (1) comprising a lighting device (30) connected to a transparent pane (11) and a daylight shielding device, for example a Venetian blind (20). The lighting device (30) may particularly comprise OLEDs (31) that typically cover the whole area of the pane (11). The daylight shielding device (20) is optionally disposed between the first pane (11) and an additional pane (12).

Abstract: The invention relates to a light emitting device (10), with at least one first (20) and at least one second section (30), wherein the first section (20) borders the second section(30) and each section (20,30) comprises a bottom side (21,31) and at least one side surface (22,32), each section (20,30) comprises a stack of layers (15) of a substrate, with a basic layer (40), a first electrode layer (41), a second electrode layer (42) and an organic light-emitting layer (OLED) (43), wherein the organic light-emitting layer (43) is sandwiched between the first electrode layer (41) and the second electrode layer (42), the organic light-emitting layer (43) is emitting an artificial light (45,45), in an expanded position (100) the first section (20) and the second section(30) are longish stretched and the artificial light (45,45) is primarily emitted through the bottom sides (21,31) of the first section (20) and the second section(30), and in a compact position (110) the first section (20) faces the second section (3

Abstract: The present invention relates to a method for determining a status and/or condition of an LED/OLED device 10, comprising the steps of: applying at least one time varying signal 22 to the LED/OLED device, acquiring the response 24 to said at least one time varying signal, correlating said response with predetermined values 30, and determining the status/condition 32 on the basis of the correlation result. Further, 5 the present invention relates to a device adapted to carry out the inventive method.

Abstract: The present invention relates to a daylight deflection system including an arrangement of louvers (5) which are aligned and formed to block daylight impinging from an outer side (3) at higher angles of incidence with respect to a horizontal direction (19), to deflect daylight impinging from the outer side (3) at lower angles of incidence with respect to the horizontal direction (19) towards an indoor ceiling, and to allow visual transmission in at least the horizontal direction (19). In this deflection system OLED's (8) or optical light guides (16) coupled to LED's (17) are attached to or integrated in the louvers (5), said OLED's (8) or light guides (16) being microstructured at a surface to deflect the daylight toward the indoor sealing. With this daylight deflection system indoor lighting combining daylight and artificial light is achieved in a compact manner.

Abstract: Organic light emitting diode arrangement Organic light emitting diode arrangements (1) are, to protect them against an effect of a switch-on, provided with circuits (31-36) for, during a first time interval that follows a switch-on, limiting a current through the organic light emitting diode arrangement (1) more and for, during a second time interval that follows the first time interval, limiting the current less. The circuit (31-36) may be passive such as a negative temperature coefficient resistor (31) or a series inductor (32) possibly with a freewheel diode (40) or may be active such as a switchable resistor (33) that is not bridged during the first time interval and that is bridged during the second time interval or a switchable resistor that is bridged in response to a detection of a value of the current exceeding a threshold value or such as a part of a converter (63) that is controlled in response to a detection of a value of the current.

Abstract: The present invention relates to a lighting system comprising a base part (12) with at least one primary coil (18), and at least one light module (13, 14) with a secondary coil (26) adapted to inductively interact with the primary coil (18). The lighting system is characterized in that said base part (12) comprises a substrate (50) carrying said primary coil (18), the winding of which lying in one plane and forming a flat coupling area (16); the winding of the second coil (26) lies in one plane; and said light module (13, 14) comprises at least one light element (20) and a flat bottom surface, so that the light module (13, 14) is placeable with its flat surface on the flat coupling area (16).

Abstract: In a method and a driver circuit for operating one or more light emitting diodes, LEDs, an alternating supply current is generated and transformed to an alternating secondary winding voltage. Using rectifier means, such as diodes or synchronous switches, the alternating secondary winding voltage is converted to a substantially constant load current by using a buffer element, such as an output choke, i.e. a suitable inductor. The power transferred from the power source to the LEDs may be controlled by frequency control of the alternating supply current.

Abstract: The invention relates to an electrical system (1) with a light emitting device (10) with a first (11) and a second electrode (12) and a light emitting element (13) being provided between the first (11) and the second electrode (12), a heating device (20) with a heating element (21,11,12), wherein the light emitting device (10) and the heating device (20) are placed between a first (30) and a second panel (31), wherein at least one panel (30,31) is transparent, wherein the heating element (21,11,12) is disposed in an electric circuit in order to emit heat radiation (41), which is generated by the heating element (21,11,12) and directed to the first and/or the second panel (30,31), wherein the light (40), which is generated by the light emitting device (10), and the heat radiation (41) are released at one outer surface (33,34) leaving the electrical system (1).