US 12,459,419 B2
Vehicle headlight having an imaging generation unit and a matrix light source unit for producing overlapping images in a light distribution
Mitsuharu Mano, Shizuoka (JP); Naoki Kawabata, Shizuoka (JP); Tomoki Wakasugi, Shizuoka (JP); and Shuji Matsuura, Shizuoka (JP)
Assigned to KOITO MANUFACTURING CO., LTD., Tokyo (JP)
Appl. No. 18/716,740
Filed by KOITO MANUFACTURING CO., LTD., Tokyo (JP)
PCT Filed Dec. 6, 2022, PCT No. PCT/JP2022/044996
§ 371(c)(1), (2) Date Dec. 12, 2024,
PCT Pub. No. WO2023/106304, PCT Pub. Date Jun. 15, 2023.
Claims priority of application No. 2021-199385 (JP), filed on Dec. 8, 2021; application No. 2021-199386 (JP), filed on Dec. 8, 2021; application No. 2021-199387 (JP), filed on Dec. 8, 2021; application No. 2021-199388 (JP), filed on Dec. 8, 2021; and application No. 2021-211415 (JP), filed on Dec. 24, 2021.
Prior Publication US 2025/0121767 A1, Apr. 17, 2025
Int. Cl. F21S 41/153 (2018.01); B60Q 1/08 (2006.01); B60Q 1/14 (2006.01)
CPC B60Q 1/08 (2013.01) [B60Q 1/1423 (2013.01); F21S 41/153 (2018.01)] 10 Claims
OG exemplary drawing
 
1. A vehicle headlight comprising:
an image generation unit configured to generate an image representing a light distribution pattern including a reference light distribution pattern that is at least a part of a low beam light distribution pattern or at least a part of a high beam light distribution pattern;
a light source unit including a plurality of light emitting units and configured to emit light based on the image generated by the image generation unit, the plurality of light emitting units being configured to individually change an amount of light to be emitted, and arranged in a matrix; and
a memory configured to store a reference image for forming the reference light distribution pattern by light emitted from the light source unit and a plurality of additional images to be superimposed on a part of the reference image, wherein
each of the plurality of additional images is one of a plurality of darkened images of which at least parts overlapping a region of the reference image are different from each other and which are darker than the reference image of the region, and a plurality of brightened images of which at least parts overlapping a region of the reference image are different from each other and which are brighter than the reference image of the region, and
the image generation unit generates the image for forming a predetermined light distribution pattern by light emitted from the light source unit by selecting at least one additional image from among the plurality of additional images based on information from a detection device that detects a predetermined target object positioned in front of a vehicle and superimposing the selected additional image on a part of the reference image, the predetermined light distribution pattern being obtained by changing an amount of light of a predetermined region overlapping the predetermined target object in the reference light distribution pattern.