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US 2002/0158514 A1Published application
Irradiation direction control apparatus for vehicle lamp
AssigneeKoito Manufacturing Co., Ltd.
InventorMakoto Izawa
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AssigneeKoito Manufacturing Co., Ltd.
InventorMakoto Izawa
Estimating the term…
An irradiation direction control apparatus 1 for a vehicular lamp has a vehicle height detecting means 2 for detecting change in the height of an axle portion of at least one of front wheels and rear wheels. The detecting means 2 sends irradiation control means 4 detection information representing the detected change in the height. The irradiation control means 4 calculates a moving average value of data representing change in the height of the axle portion or representing the pitch-angle every predetermined time period, and subsequently obtains a second moving average value of the calculated moving average. Further, the control means 4 generates a control signal according to the obtained moving average value, and controls the irradiation direction of the lamp 6 so that the irradiation direction thereof is maintained at all times in a fixed direction.
An irradiation direction control apparatus for a vehicular lamp, said apparatus adapted to acquire data representing a pitch angle of a vehicle by detecting change in height of an axle portion of at least one of front wheels and rear wheels, and to change an irradiation direction of a vehicle lamp according to change in attitude of said vehicle in such a manner as to cancel change in the pitch angle, said apparatus comprising:
An irradiation direction control apparatus for a vehicular lamp, comprising:
Dependencies are inferred from the claim text.