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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