Apparatus and method for controlling light distribution of headlamp
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United States of America Patent
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Aug 26, 1997
Grant Date -
N/A
app pub date -
Aug 27, 1993
filing date -
Aug 28, 1992
priority date (Note) -
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status (Latency Note)
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Abstract
An apparatus for controlling the light distribution of a headlamp includes a vehicle speed sensor; a calculating device for estimating a position to be reached by the vehicle after a predetermined time along a forward roadway of the vehicle on the basis of a vehicle speed and information representing a route of the forward roadway, and for calculating a direction of illumination or a range of illumination by the headlamp so that light is illuminated onto an estimated position; and a control device for controlling the direction of illumination or the range of illumination by the headlamp on the basis of a result of calculation by the calculating device. The light is illuminated onto a position, which is located ahead of the vehicle and which is viewed by a driver, for obtaining an optimum light distribution for a field of view of the driver.
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