发明名称 Electric incandescent lamp provided with different pitch factors for each end of a filament component
摘要 The invention relates to an electric incandescent lamp, in particular a vehicle headlight, having at least one incandescent filament which is arranged within a light-permeable lamp vessel, the at least one incandescent filament having different pitch factors at its two ends. In order to increase the luminance at the light/dark boundary of the lower beam, that end of the incandescent filament which is near to the base has a lower pitch factor.
申请公布号 US7456558(B2) 申请公布日期 2008.11.25
申请号 US20050194588 申请日期 2005.08.02
申请人 PATENT-TREUHAND-GESELLSCHAFT FUER ELEKTRISCHE GLUEHLAMPEN MBH 发明人 BUEHLER MANFRED;WITTMANN KLAUS
分类号 H01K1/02;H01K1/14 主分类号 H01K1/02
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