Abstract:
An apparatus (1) for coupling a power source (2) to a light emitting diode lamp(3)comprises a first part for receiving first voltage and current signals from the power source(2) and a second part for supplying second voltage and current signals to the lamp (3). The first part comprises a detection part (11) for detecting a first amplitude reduction in at least one of the first signals, for example in the first voltage signal, And the second part comprises an introduction part (12) for, in response to a detection result, introducing a second amplitude reduction into at least one of the second signals, for example into the second current signal.As a result, the first part detects a first dimming state caused by the power source(2), and the second part introduces a second dimming state in response to the first part having detected the first dimming state, and the apparatus (1) has self-dimming capabilities, to keep the grid stable.
Abstract:
The invention relates to composing a lighting atmosphere from an abstract description for example a lighting atmosphere specified in XML, wherein the lighting atmosphere is generated by several lighting devices, by automatically rendering the desired lighting atmosphere from the abstract description. The abstract description describes the type of light with certain lighting parameters desired at certain semantic locations at certain semantic times. This abstract atmosphere description is automatically transferred to a specific instance of a lighting system (14, 16, 18). The invention has the main advantage that it allows to create light scenes and lighting atmospheres at a high level of abstraction without requiring the definition of a lighting atmosphere or scene by setting the intensity, color, etc. for single lighting units or devices which can be very time consuming and cumbersome, particularly with large and complex lighting systems comprising many lighting devices.
Abstract:
The invention relates to an apparatus (10), with a carrier element (20,20') and a holding mean (70), wherein at least one optical fiber (50) is embedded in the carrier element (20,20'), comprising a number of surfaces (21,22,23), the optical fiber (50) comprises a first (51) and a second end (52), the first end (51) ends in an area of anyone of the surfaces (21,22,23) and the second end (52) ends in an area of anyone of the surfaces (21,22,23), and a sensor element (40), integrated in the holding mean (70), is positioned adjacent to the carrier element (20,20') in such a way, that the sensor element (40) detects an ambient light (15), entering the first end (51), being guided by the optical fiber (50) and leaving the second end (52).
Abstract:
A conversion circuit for converting solar power into an alternating 3-phase maims (M) comprises a converter (conv) for converting the power from a solar cell (sc) into an unipolar converter output voltage provided between a first and a second converter output terminal of the converter, the converter having a constant power output regulation. The conversion circuit further comprises an inverter (Inv) for cyclically switching one of 3 3-phase output terminals to the first converter output terminal, one to the second converter output terminal and one intermittently to the first and second converter output terminal. With this conversion circuit and method, high capacity energy storage components (such as a capacitor having a large capacitance) can be avoided in the conversion circuit.
Abstract:
A system comprising a device for placement in front of a display device, such as a TV screen,to change the optical properties of light received by a user observing said display device, when the display device is in an off state or standby state, while when the display device is in an on state, the device appears transparent.
Abstract:
Adaptation circuits (3) for controlling conversion circuits (1-2) for converting input signals into pulse signals and for converting pulse signals into output signals are provided with generators (30) for generating control signals in dependence of input signals and (basic idea) with compensation circuits (71-72,81-83) for adjusting the generators (30) in dependence of input information for increasing a stability of output signals, to be able to supply relatively constant output signals to loads (6). The adaptation circuits (3) may reduce dependencies between input signals and output signals and may generate control signals independently from output signals to avoid feedback loops. Input signals may be input voltages, output signals may be output currents, and input information may comprise input voltages and nominal input voltages for compensating for variations of input voltages or may comprise nominal output voltages and input currents proportional to output voltages for compensating for variations of output voltages.
Abstract:
According to an exemplary embodiment of the present invention, a lighting system for communication with a remote control device is provided, which comprises a light emitting element adapted for emitting modulated light to the remote control and for detecting control signals from the remote control. This may provide for a communication between the remote control and the lighting system without the need of an extra sensor or an extra transmitter.
Abstract:
The present invention relates to in vivo expression profiling using a plurality of specific targeting moieties each labelled with a different compound which allows to identify simultaneously the binding of each targeting moiety to a target.
Abstract:
The invention relates to a device for product-induced control of light scenes (41), the device comprising at least one database module (4) in which control data (42) for at least one light scene (41) are stored, a transmitter for transmitting product and/or light control information, a receiver connected to a light control system (5), and a detection module for detecting a product, wherein the transmitter is connected to a product (2) and is set up in such a way that at least data for light control are transmitted to the receiver as soon as the product is detected by the detection module. The invention further relates to a method for product-induced control of light scenes, wherein a product (2) is first identified, and a light sequence (41) assigned to the product (2) is subsequently selected from a database module (4) with the aid of product identification data, whereafter the light control data (42) assigned to the light sequence (41) are transmitted to a light control system (5).
Abstract:
The invention relates to a mounting substrate (10) for mounting and electrically contacting at least one light emitting diode (20), a ceramic layer (40) disposed in a path of light emitted by the light emitting diode (20), wherein the ceramic layer (40) comprises a wavelength converting material, the light emitting diode (20) disposed between the ceramic layer (40) and the mounting substrate (10), a light sensor (30) disposed at the mounting substrate (10) detecting a luminous output of the light emitting diode (20) in order to control the brightness and/or the color of the light leaving the light module (1), wherein the ceramic layer (40) is only partly translucent to shield the light sensor (30) against ambient light.