Patent ID: 11964608
Assignee: KOITO MANUFACTURING CO., LTD.
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC B  F  H | IPC B  H

Claim 10:
11. A light distribution control method of controlling formation of light distribution patterns by a first lamp unit and a second lamp unit that are each capable of forming a light distribution pattern of a variable intensity distribution in accordance with a target included in an image that is based on an imaging device, the light distribution control method comprising:
in regard to a region where the target is not present, controlling at least one of the first lamp unit or the second lamp unit so as to form high-illuminance patterns at a predetermined illuminance, and forming a combined high-illuminance pattern by superposing the light distribution patterns that the first lamp unit and the second lamp unit form;
in regard to a forward vehicle among the targets, controlling the first lamp unit and the second lamp unit so as to form shading patterns that are not dependent on a luminance of the image at an illuminance lower than the illuminance of the high-illuminance patterns, and forming a combined shading pattern by superposing the shading patterns that the first lamp unit and the second lamp unit form; and
in regard to a specific target, among the targets, for which a combined mid-illuminance pattern is to be formed at an illuminance lower than an illuminance of the combined high-illuminance pattern and higher than an illuminance of the combined shading pattern, controlling the first lamp unit so as to form an illuminance fixed pattern that is not dependent on the luminance of the image, controlling the second lamp unit so as to form an illuminance fixed pattern that is not dependent on the luminance of the image or to form an illuminance adjusted pattern of which an illuminance is adjusted to bring a luminance of the specific target in the image closer to a target luminance, and forming the combined mid-illuminance pattern by superposing the light distribution patterns that the first lamp unit and the second lamp unit form.