Abstract:
A power supplying device (20) is provided for providing electrical power to a power receiving device (30), the power supplying device (20) comprising two plates (22), two electrode structures (23, 43, 81, 82) being arranged to be coupled to an AC power source (41) and at least one power transmitter (21). Each electrode structure (23, 43, 81, 82) is attached to one of said two plates (22). The power transmitter (21) is situated in between the two plates (22) and comprises an electrically conductive coil (28) and at least two electrical contacts (25) coupled to the electrically conductive coil (28). The plates (22) and the power transmitter (21) are arranged such that the power transmitter (21) is movable in a direction parallel to the surfaces of the plates (22) with the electrical contacts (25) in contact with the respective two electrode structures (23, 43, 81, 82) for obtaining power from the AC power source (41).
Abstract:
The invention relates to supervision circuits (10) for supervising organic light emitting diode devices (1) via detection circuits (20) for detecting failure states of the organic light emitting diode devices (1) and for generating decision signals in response to detected failure states of the organic light emitting diode devices (1), which detected failure states have durations equal to or larger than time intervals. In response to the decision signals, the organic light emitting diode devices (1) can be bypassed and deactivated through switching circuits (30) such as bi-stable circuits. The failure states may include that the organic light emitting diode devices (1) have a relatively low impedance or "short" and a relatively high impedance or "open". The supervision circuit (10) further prevents the organic light emitting diode devices (1) from being bypassed unjustly. The supervision circuits (10) may be autonomous circuits that only receive power via the organic light emitting diode devices (1) and may be automatic circuits that automatically reset themselves after turn-off.
Abstract:
The invention proposes an OLED-Mirror-Element (10, 10', 10") comprising a OLED-Light-Source (20), a switch (30) for switching on or off the OLED-Light-Source, an IR-Light-Source (40) emitting IR light substantially normal to the light emitting surface of the OLED light source and a IR-Light Detector (50) detecting IR light substantially normal to the light emitting surface of the OLED-Light-Source, whereby the IR-Light-Detector in response to a detected reflected Signal of the IR-Light-Source operates the switch, and whereby the acceptance angle of the IR- Light-Detector in normal direction is limited such that only objects substantially in front of the OLED-Mirror-Element (10, 10', 10") within the sensing range are detected.
Abstract:
An OLED device comprised of: an OLED means, a capacitive proximity sensing means for sensing a change in a capacitance, a mechanical element, and a means to provide a signal, wherein the OLED means and the mechanical element are movable relative to each other upon operation by a user and can assume a first position or a second position, wherein the capacitance is adapted to change between a first capacitance and a second capacitance when the OLED means and mechanical element are moved between the first position and the second position by an operator,and wherein the signal depends upon the capacitance.
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 seg¬ ments 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, re¬ spectively. This way, an OLED device for illumination purposes with a reliable proximity sensing function is achieved.
Abstract:
Arrangements (2-5) for generating light in a relatively fail-safe way are provided with first generators (2) such as first groups of light emitting diodes (200-249) for generating first light in first modes and with second generators (3) such as second groups of light emitting diodes (300-304) for generating second light in second modes and with detectors (4) for detecting problems with one of the generators (2-3) and with switches (5) for in response to detected problems switching the arrangement (2-5) between the modes. The first generators (2) are connected via first couplings to first power sources (6) such as mains supplies and the second generators (3) are connected via second couplings to second power sources (7) such as battery supplies. The first and second groups may be interleaved and/or stacked groups. Devices (1) comprise arrangements (2-5) for displaying different or the same information in both modes.
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, the present invention relates to a device adapted to carry out the inventive method.
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 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:
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.