Headlight for vehicle
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United States of America Patent
Stats
-
Jan 17, 1989
Grant Date -
N/A
app pub date -
Oct 17, 1986
filing date -
Oct 18, 1985
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A headlight for a vehicle includes a metal halide lamp and a reflector having a focus and reflecting a light beam, emitted from the lamp, in a forward direction from the front of the vehicle. The lamp has a luminescent tube in which at least sodium is sealed, and positive and negative electrodes. The respective distal ends of the electrodes are located in the luminescent tube and spaced at a predetermined distance from each other. The lamp is positioned so that a straight line connecting the respective distal ends of the electrodes is horizontal and passes through the focus, and so as to meet the following requirement: 0.ltoreq.L0/L1.ltoreq.0.4, where L0 is the distance between the focus and the distal end of the negative electrode, and L1 is the distance between the distal ends of the electrodes.
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Family
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Cited Art Landscape
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