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Jens Pollmann-Retsch, Aachen DE
Jens Pollmann-Retsch, Aachen DE
| Patent application number | Description | Published |
|---|---|---|
| 20080265777 | Lamp with Closing Means in Case of an Explosion of the Burner - The invention relates to a lamp, e.g. a UHP-Lamp, comprising a burner with an ionizable filling and an amount of mercury contained therein, having at least one closing means ( | 10-30-2008 |
| 20090009095 | Method and Circuit Arrangement for Operating a Discharge Lamp - A method and a circuit arrangement are described for operating a discharge lamp is described, especially a high-intensity discharge lamp or lamps (HID) or UHP [ultra high performance]-lamp, which is/are distinguished by a first and a second operating phase with a higher first or a lower second frequency of the lamp AC, wherein the operating phases are activated alternatingly at defined intervals and for defined periods of time, in order to achieve a stable arc discharge and only a low burnout or rise in burning voltage of the lamp during its life by configuring certain forms of electrode tips. Furthermore, are described an illumination unit with a discharge lamp and such a circuit arrangement as well as a projection system with a projection display and such an illumination unit. | 01-08-2009 |
| 20100014293 | LIGHTING UNIT WITH ROTATABLE BODY - In a lighting unit with a holder ( | 01-21-2010 |
| 20100244744 | METHOD OF DRIVING A GAS-DISCHARGE LAMP - The invention describes a method of driving a gas-discharge lamp ( | 09-30-2010 |
| 20100264848 | METHOD OF SHUTTING DOWN A HIGH PRESSURE DISCHARGE LAMP AND DRIVING UNIT FOR DRIVING A HIGH PRESSURE DISCHARGE LAMP - The invention describes a method of shutting down a high pressure discharge lamp ( | 10-21-2010 |
| 20100320938 | METHOD OF DRIVING A GAS-DISCHARGE LAMP - The invention describes a method of driving a gas-discharge lamp ( | 12-23-2010 |
| 20110062885 | METHOD OF DRIVING AN UHP GAS-DISCHARGE LAMP - The invention describes a method of driving a gas-discharge lamp ( | 03-17-2011 |