METHOD OF DRIVING A GAS-DISCHARGE LAMP

摘要

The invention describes a method of driving a gas-discharge lamp (1) enclosing a pair of electrodes (3, 4), wherein, during a normal mode of operation, the lamp (1) is driven according to a stabilisation driving scheme, which stabilisation driving scheme comprises a repeating sequence (SAB) of driving schemes (A, B), wherein each driving scheme (A, B) causes a particular shape change of the electrodes (3, 4), and the driving scheme sequence (SAB) is compiled such that the electrodes (3, 4) of the lamp (1) are subject to repetitive shape changes. During an ancillary mode of operation in which an alteration in light output of the lamp (1) is essentially imperceptible to an observer, the lamp (1) is driven according to a remodelling driving scheme (C) to extensively remodel the electrodes (3, 4). The invention further describes a driving unit (10) for driving such a gas-discharge lamp (1), and a projection system (22) with such a lamp (1) and driving unit (10).