| 摘要 |
An optical axis control device for a vehicle headlamp detects the inclined state (inclination angle Deltaalpha) of a vehicle relative to a road surface during running of the vehicle, performs, in parallel, filtering for removing high frequency components of the detection data (for example, frequency components exceeding 0.1 Hz) (processing by first filter means), and filtering for removing high frequency components of the detection data (for example, frequency components exceeding 0.05 Hz) (processing by second filter means), updates the inclination angle Deltaalpha based on a plurality of data, and adjusts the inclination angle of a headlamp 5.
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