Title:
VEHICLE HEADLAMP
Document Type and Number:
WIPO Patent Application WO/2023/286693
Kind Code:
A1
Abstract:
A vehicle headlamp (1) comprises: a lamp unit (10) having a plurality of light emitting elements (13); a boundary determination unit (50) for determining a boundary between a bright area to be brightened and a dark area to be darker than the bright area; and a control unit (CO). The control unit (CO) controls the lamp unit (10) so that the illuminance of light with which each irradiation spot (20) on an irradiation spot line (21) composed of irradiation spots (20) irradiated with light from the light emitting devices (13) overlapping the boundary (51) is irradiated is lower than or equal to the illuminance of light with which adjacent irradiation spots (20) on the bright area side of the irradiation spots (20) are irradiated, and is higher than or equal to the illuminance of light with which adjacent irradiation spots (20) on the dark area side of the irradiation spots (20) are irradiated, and so that the total amount of light from the lamp unit (10) with which the irradiation spot line (21) is irradiated decreases depending on the ratio of a portion of the irradiation spot line (21) that overlaps the dark area.
Inventors:
MANO MITSUHARU (JP)
Application Number:
PCT/JP2022/027034
Publication Date:
January 19, 2023
Filing Date:
July 07, 2022
Export Citation:
Assignee:
KOITO MFG CO LTD (JP)
International Classes:
B60Q1/14; F21V5/00; F21V5/04; F21V7/00; F21V14/04
Foreign References:
| JP2020055516A | 2020-04-09 | |||
| US20160377251A1 | 2016-12-29 | |||
| JP2020104561A | 2020-07-09 | |||
| JP2020104561A | 2020-07-09 |
Attorney, Agent or Firm:
MORIMURA Yasuo (JP)
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