Optical unit for vehicle headlight and vehicle headlight
By positioning light source units above and below the light guide and integrating light guide portions with a cutoff line forming surface, the optical unit addresses the design compromise caused by large heat sinks, enabling efficient light distribution and enhanced aesthetics in vehicle headlamps.
Patent Information
- Authority / Receiving Office
- WO · WO
- Patent Type
- Applications
- Current Assignee / Owner
- KOITO MFG CO LTD
- Filing Date
- 2025-12-05
- Publication Date
- 2026-07-02
AI Technical Summary
The use of small lens parts in vehicle headlamps requires large heat sinks, leading to a significant gap between low-beam and high-beam units, compromising the design aesthetics of the vehicle headlamp.
An optical unit design where the first light source unit is positioned above the light guide and the second light source unit is positioned below, eliminating the need for a heat sink between the lens parts, and integrating the light guide portions with a cutoff line forming surface to prevent stray light and enhance design appeal.
The solution allows for the formation of both low-beam and high-beam light distribution patterns while maintaining a high aesthetic appeal by minimizing the gap between lens parts and optimizing light guidance through the light guide.
Smart Images
Figure JP2025042524_02072026_PF_FP_ABST