Method and system for dimming light sources

专利名称：Method and system for dimming light

sources

发明人：De Anna, Paolo申请号：EP025043.6申请日：20050202公开号：EP16212A1公开日：20060809

专利附图：

摘要：Dimming a light source such as a LED over a dimming range (0%-100%) involvesadjusting at least one of the intensity (I) and the duty-cycle (DR) of a current flowingthrough the light source. The dimming range includes at least one portion (L%-H%; 0%-

H%) where the light source is fed with a current whose intensity (I) is switched with agiven duty cycle (DR) between a non-zero on value and zero, the non-zero on value beinga fraction of said rated value (Irated), whereby joint CC and PWM dimming is achieved.

申请人：Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH,OSRAM S.P.A.- SOCIETA' RIUNITE OSRAM EDISON CLERICI

地址：Hellabrunner Strasse 1 813 München DE,Via Savona 105 20144 Milano IT

国籍：DE,IT

代理机构：Pokorny, Gerd

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