公开(公告)号：US20230071761A1

公开(公告)日：2023-03-09

申请号：US17898709

申请日：2022-08-30

申请人： OSRAM GmbH

发明人： Michael HEISE ,  Bernd KOCH ,  Sascha PILTZ ,  Kai WOLTER

IPC分类号： G03B21/20 ,  H05B41/292 ,  H05B41/39

摘要： A method for operating a discharge lamp by modulating a current signal is presented. The discharge lamp is operated with at least two different frequencies. At first a probability distribution function for a first number of first frequency periods and a second number of second frequency periods is defined. Next, the first number of first frequency periods and the second number of second frequency periods are determined depending on the probability distribution function by at least one random number. The current signal is modulated by applying the first number of first frequency periods and the second number of second frequency periods to the current signal for operating the discharge lamp.

公开(公告)号：US20230063322A1

公开(公告)日：2023-03-02

申请号：US17898586

申请日：2022-08-30

申请人： OSRAM GmbH

发明人： Bernd KOCH ,  Michael HEISE ,  Sascha PILTZ ,  Kai WOLTER

IPC分类号： G03B21/20 ,  H05B41/292 ,  H05B41/39

摘要： The invention describes a method for operating a discharge lamp by adapting a current signal. A distribution function is defined for gathering several time span values that define several different time spans. The several time span values are determined depending on the distribution function by one or more random numbers. The current signal is commutated at every instant of time according to an expiry of each of the several time spans. A light apparatus is provided with a control unit to perform any method.