Vehicle lamp

The vehicle lighting device achieves efficient light superposition and diffusion by using a first lens with multiple emission surfaces and a projection lens with inclined incidence surfaces, addressing the challenges of parallel arrangement and miniaturization in vehicle lighting systems.

WO2026141309A1PCT designated stage Publication Date: 2026-07-02ICHIKOH IND LTD

Patent Information

Authority / Receiving Office
WO · WO
Patent Type
Applications
Current Assignee / Owner
ICHIKOH IND LTD
Filing Date
2025-12-22
Publication Date
2026-07-02

AI Technical Summary

Technical Problem

Existing vehicle lighting devices face challenges in achieving appropriate light superposition and diffusion, particularly when multiple lighting units are arranged in parallel, leading to issues such as increased size, insufficient miniaturization, and optical axis misalignment of lenses on a single substrate.

Method used

The vehicle lighting device incorporates a configuration with a first lens having multiple emission surfaces and a projection lens with inclined incidence surfaces, allowing for appropriate light superposition and diffusion, reducing the space required for parallel arrangement of lenses and enhancing light utilization efficiency.

Benefits of technology

This configuration enables effective light superposition and diffusion, improving the miniaturization and design efficiency of vehicle lighting systems by maintaining a compact form factor while optimizing light distribution patterns.

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    Figure JP2025044880_02072026_PF_FP_ABST
Patent Text Reader

Abstract

The present invention provides a vehicle lamp having a configuration for appropriately superimposing light. A vehicle lamp (1) comprises a first lens (30) which has an emission surface (31) and a projection lens (60) which is provided on the front side of the first lens (30) so as to be spaced apart from the first lens (30) and which has an incident surface (61), wherein: the emission surface (31) includes a first emission surface (31A) which is provided on one side and a second emission surface (31B) which is provided on the other side and which is adjacent to the first emission surface (31A); the incident surface (61) includes a first incident surface (61A) which is provided on one side and a second incident surface (61B) which is provided on the other side and which is adjacent to the first incident surface (61A); the first incident surface (61A) is inclined rearward from the other side toward the one side; the second incident surface (61B) is inclined rearward from the one side toward the other side; the first incident surface (61A) is an incident surface on which light mainly from the first emission surface (31A) is incident; and the second incident surface (61B) is an incident surface on which light mainly from the second emission surface (31B) is incident.
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