VEHICLE HEADLAMP DEVICE AIMING METHOD AND VEHICLE HEADLAMP DEVICE AIMING SYSTEM

A vehicle headlamp device aiming method controls a light distribution pattern of a headlamp device, based on a front image of an own vehicle acquired by an in-vehicle camera. The vehicle headlamp device aiming method includes: a step of illuminating an aiming screen with a specific light distribution pattern in the headlamp device, and acquiring an image of the specific light distribution pattern by the in-vehicle camera; a step of obtaining coordinates of a specific position in the specific light distribution pattern, by using coordinates set on the image of the in-vehicle camera, and obtaining a deviation with respect to adjusted coordinates of the specific position; and a step of performing optical axis adjustment of the headlamp device to eliminate the deviation.