Control device for vehicular headlamp, and vehicular headlamp system

Abstract

The objective of the present invention is to reduce visual difficulties associated with movement of a dimmed range (or a light-blocked range). Provided is a device for controlling the operation of a vehicular lamp fitting having a variable light distribution pattern, wherein, when a first region arises in which a dimmed range set in a first time period is to be switched to a light illumination range in a second time period and / or a second region arises in which a light illumination range set in the first time period is to be switched to a dimmed range in the second time period, a controller sets an illumination mode in which the brightness of each region is changed gradually, and generates a control signal to be output to the vehicle lamp fitting on the basis of the set illumination mode. The illumination mode changes over time such that the amount of change in brightness in the vicinity of a start point and in the vicinity of an end point is smaller than the amount of change midway between the start point and the end point.

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