Integrated Vehicle Lamp Light Guide for Low Beam Efficiency
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Solution Overview
Problem
Existing low beam vehicle lamps have a complex configuration due to separate shields and inner lenses, which reduces luminous efficiency and increases volume.
Innovation Solution
A simplified low beam lamp design integrating a light source, collimator, and light guide part with a recessed region and reflective layers, where the light entering and exiting portions and body portion are formed integrally, optimizing light distribution and reducing light loss.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Shape
If a shield and inner lens are separately provided to form cut-off line, then the low beam lamp can achieve proper light distribution pattern, but the configuration becomes complex and volume increases
Solution Approach 1:
The patent combines the shield and inner lens into a single integrated light guide part. The light guide part includes a light entering portion, light exiting portion, and body portion that work together to form the cut-off line shape, eliminating the need for separate shield and inner lens components.
Solution Approach 2:
The integrated light guide part performs multiple functions simultaneously: it guides light from the light source, forms the cut-off line pattern, and controls light distribution. This multi-functional design replaces what previously required separate dedicated components.
2Shape
If a shield is used to block light beams, then the cut-off line shape is formed, but luminous efficiency is significantly degraded
Solution Approach 1:
The patent replaces the mechanical light blocking approach (shield) with an optical guidance approach (light guide part). Instead of blocking light with a shield, the light guide part uses optical principles to redirect and shape light beams, forming the cut-off line pattern while maintaining higher luminous efficiency.
Solution Approach 2:
The light guide part acts as an intermediary between the light source and the external environment. It mediates light transmission by guiding and shaping beams through its structured body portion, achieving the cut-off line effect without the energy loss associated with direct light blocking.
3Shape
If shield and inner lens are separately provided, then light distribution can be controlled, but the lamp volume increases
Solution Approach 1:
By merging the shield and inner lens into a single integrated light guide part, the overall lamp volume is reduced. The consolidation of components eliminates gaps and redundant structures, resulting in a more compact lamp design while preserving light distribution control capabilities.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The integrated design enhances luminous efficiency by minimizing light blockage and simplifying the configuration, while maintaining a cut-off line shape for the low beam pattern.
Implementation Method 1
an inner lens configured to totally reflect the light beams and allow the light beams to propagate forward
Implementation Method 2
a reflective layer for reflecting light may be formed on a surface of the first section
Data Source
AI summary
Disclosed is a lamp for a vehicle, the lamp including: a light source; a collimator positioned in front of the light source; and a light guide part, in which the light guide part includes: a light entering portion; a light exiting portion; and a body portion configured to connect the light entering portion and the light exiting portion, in which an optical axis AXI of the light entering portion and an optical axis AXO of the light exiting portion are parallel to each other, and in which the optical axis AXI of the light entering portion is spaced apart upward from the optical axis AXO of the light exiting portion.