| Patent application number | Description | Published |
|---|
| 20100149808 | ILLUMINATION DEVICE AND PROJECTION DEVICE WITH SUCH AN ILLUMINATION DEVICE - An illumination device may include a flexible printed circuit board; a power electronics module; and a light-emitting diode module, which is electrically connected to the power electronics module by means of the flexible printed circuit board. | 06-17-2010 |
| 20100171773 | CIRCUIT ARRANGEMENT AND ACTUATION METHOD FOR SEMI-CONDUCTOR LIGHT SOURCES - A circuit arrangement for driving semiconductor light sources is provided. The circuit arrangement may include video electronics, which are configured to generate a timing signal and an image value table; a driver circuit, which comprises a digital and an analogue part, and a semiconductor light source module, which can contain one or a plurality of semiconductor light sources; and a switch being arranged between the driver circuit and the semiconductor light source module, which switch is driven by the driver circuit and can switch the desired value for the power supply for the semiconductor light source module away from an analogue/digital converter to logic 0. | 07-08-2010 |
| 20100176740 | FEEDFORWARD CONTROL OF SEMICONDUCTOR LIGHT SOURCES - A control method for a semiconductor light source may include operating the semiconductor light source with short, powerful pulses by an operating device; storing the characteristic light decrease of the semiconductor light source depending on the power introduced into the semiconductor light source in the operating device; and altering power introduced during the pulse in such a way that the emitted quantity of light of the semiconductor light source substantially remains constant over the pulse duration. | 07-15-2010 |
| 20100221930 | PLUG DEVICE, PLUG CONNECTOR, AND METHOD FOR PRODUCING THE PLUG CONNECTOR - A plug device may include a printed circuit board; and a plug connector, which is soldered flat onto the printed circuit board. | 09-02-2010 |
| 20100309188 | Driver for a projection system - A driver for a plurality of semiconductor light sources is provided. The driver may include a plurality of means configured to provide current for in each case at least one semiconductor light source, wherein the driver includes a unit, composed of a power factor corrector and at least one DC/DC converter or is coupled to such a unit, an output of the DC-DC converter being directly connected to the means configured to provide current. | 12-09-2010 |
| 20110163693 | CIRCUIT ARRANGEMENT AND METHOD FOR OPERATING AT LEAST ONE LED - A circuit arrangement for operating at least one LED may include an operational amplifier; wherein a first connection of the LED is coupled to a connection for a DC supply voltage; a transistor which is coupled in series with the first connection and a second connection for the LED and can be operated in an analog manner, wherein the transistor has a control electrode, a reference electrode and a working electrode, wherein the control electrode is coupled to the output of the amplifier, wherein the working electrode is coupled to the connection for a supply voltage; and a current measuring resistor which is coupled in series between the reference electrode and a reference potential, wherein the voltage dropped across the current measuring resistor is coupled to the inverting input of the amplifier; wherein at least one load is coupled in parallel with the first and second connections for the LED. | 07-07-2011 |
