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Vehicle headlamp

Image Number 2 for United States Patent #7501767.

A vehicle headlamp is provided with a lamp unit, a first actuator for controlling the irradiation direction within the horizontal plane, a second actuator for controlling the irradiation direction within the vertical plane. A communication unit transmits and receives a signal between the actuators and a controller provided outside of the lamp body via a communication line. A glare preventing unit detects an abnormality or a failure of the actuators, the controller, and the communication line, without using the communication unit. The irradiation direction or the lighting state is changed in accordance with a portion where the abnormality or the failure.

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