摘要:
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.
摘要:
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.
摘要:
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).
摘要:
The invention relates to alighting device comprising a plurality of light emitting tiles. Each light emitting tile has at least one interface, which is adapted for signal transmission. By adding a connection element in between two neighboring interfaces of two neighboring light emitting tiles, the two light emitting tiles are connected in a daisy chain bus system. The daisy chain bus system is adapted for transmitting signals, the signals being indicative of power and/or colour of each light emitting tile.
摘要:
A driver circuit for operating one or more light emitting diodes(LEDs) is disclosed. 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. The buffer element comprises an output choke, such as an inductor. The power transferred from the power source to the LEDs may be controlled by frequency control of the alternating supply current.
摘要:
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.
摘要:
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.
摘要:
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.
摘要:
Operating a lighting device by acquiring a target brightness level of at least one solid-state lighting unit, and determining a reference driving current amplitude for obtaining the target brightness level. If the reference driving current amplitude is below an optimum driving current amplitude, the solid-state lighting unit is operated at the optimum driving current amplitude, which is pulse-width modulated to obtain the target brightness level.
摘要:
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.