Vehicle lighting tool

The vehicle lamp uses a collecting lens with dual emitting surfaces to control light direction, preventing unintended brightening and ensuring a comfortable and compliant light distribution pattern.

JP2025117435APending Publication Date: 2025-08-12ICHIKOH IND LTD
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Patent Information

Application Number
JP2024012270
Authority / Receiving Office
JP · JP
Patent Type
Applications
Current Assignee / Owner
Filing Date
2024-01-30
Publication Date
2025-08-12

AI Technical Summary

Technical Problem

Existing vehicle lamps face the issue of light from the light source passing through the condenser lens and projecting in unintended directions, causing areas different from the intended light distribution pattern to be brightened, leading to viewer discomfort.

Method used

The vehicle lamp employs a collecting lens with a first emitting surface that directs light toward the projection lens and a second emitting surface that directs light above the projection lens, preventing unnecessary light from entering the projection lens, and uses a retainer or frame to prevent reflection or emission of unwanted light.

Benefits of technology

This configuration effectively forms a desired light distribution pattern while preventing unintended brightening of areas, ensuring viewer comfort and compliance with legal intensity distribution requirements.

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  • Figure 2025117435000001_ABST
    Figure 2025117435000001_ABST
Patent Text Reader

Abstract

To provide a vehicle lighting tool configured to form a light distribution pattern using a condenser lens and a projection lens, in which a brightness of the part different from the light distribution pattern can be suppressed.SOLUTION: A vehicle lighting tool 10 includes: a condenser lend 12 for collecting light from a light source 21; and a projection lens 13 for projecting the light collected by the condenser lens 12 and forming a light distribution pattern (HP) for irradiating a front side of a vehicle. A first light emission surface 32 of the condenser lens 12 includes: a first light emission surface 36 including a projection optical axis Lp; and a second light emission surface 37 positioned above the first light emission surface 36. The first light emission surface 36 emits light from the light source 21 to the projection lens 13, and the second light emission surface 37 emits the light from the light source 21 to the part above the projection lens 13.SELECTED DRAWING: Figure 3
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Citation Information

Patent Citations

  • Lighting fixture unit and vehicular lighting fixture

    JP2018120834A