Title:
LIGHTING DEVICE FOR VEHICLE
Document Type and Number:
WIPO Patent Application WO/2023/187505
Kind Code:
A1
Abstract:
The present invention relates to a lighting device for a vehicle, comprising a light source and a cut-off refractive lens disposed in front of the light source, the lighting device for a vehicle characterized in that: the cut-off refractive lens comprises an incident surface and an exit surface, and realizes a set light distribution of a symmetrical or asymmetrical beam; one or more cut-off refractive lens sections are formed continuously, and one or more cut-off refractive lens sections are formed on at least one of a vertical protruding section of an internal ray and a vertical section independent of a propagation path of the internal ray; the cut-off refractive lens sections refract, at the exit surface, internal rays transmitted through an incident surface curve so as to satisfy a set upper and lower light distribution; the incident surface curve of the cut-off refractive lens section is formed so that the internal rays are not totally internally reflected on the exit surface, and the respective internal rays do not upwardly and downwardly cross adjacent internal rays or converge at a point on the exit surface; and in order to form a predetermined left and right light distribution of emitted light of the cut-off refractive lens, a continuous surface is formed by gradually moving forward or backward, so as to make continuous, each curve of any one or more among the incident surface curves and exit surface curves at a predetermined cut-off refractive lens section on a continuous surface and a continuous adjacent cut-off refractive lens section which form the cut-off refractive lens.
Inventors:
SON SEONG GEUN (KR)
Application Number:
PCT/IB2023/052150
Publication Date:
October 05, 2023
Filing Date:
March 07, 2023
Export Citation:
Assignee:
SON SEONG GEUN (KR)
International Classes:
F21S41/265; F21S41/32
Foreign References:
| JPS62502577A | 1987-10-01 | |||
| KR20190081690A | 2019-07-09 | |||
| KR102297013B1 | 2021-09-02 | |||
| JP2002358806A | 2002-12-13 | |||
| KR101359815B1 | 2014-02-07 | |||
| KR102419832B1 | 2022-07-11 |
Attorney, Agent or Firm:
KO, Kwang Hoon (KR)
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