Automotive Lamp Single Module Beam Pattern Design
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Solution Overview
Problem
Conventional automotive lamps suffer from light leakage and non-uniform illumination when forming beam patterns, and aesthetics are compromised when only one headlamp is illuminated, as they typically require separate modules for low and high beam patterns.
Innovation Solution
An automotive lamp design that uses a single lamp module with a light guide unit, reflector unit, and lens unit, including multiple reflector members to form both high and sub low beam patterns, ensuring uniform illumination and improved aesthetics by allowing the formation of beam patterns even when the second light source is not turned on.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If separate lamp modules are used for low beam and high beam patterns, then beam pattern functionality is improved, but device complexity and aesthetics are worsened
Solution Approach 1:
The patent combines low beam and high beam lamp modules into a single integrated lamp module. The first light source and second light source are housed together with shared optical components (light guide unit, reflector unit, lens unit), eliminating the need for separate modules while maintaining both beam pattern functionalities.
Solution Approach 2:
The single lamp module is designed to perform multiple functions: it can form low beam pattern using the first light source, high beam pattern using the second light source, and daytime running light pattern using both light sources. The shared optical components serve all three functions, making the system universal and multi-functional.
2Use of energy by moving object
If only one headlamp is illuminated during low beam operation, then energy consumption is reduced, but aesthetics and vehicle recognition are worsened
Solution Approach 1:
The patent implements selective illumination where different parts of the lamp module are activated based on driving conditions. During daytime running light mode, both the first light source and second light source are illuminated to provide full aesthetic appearance. During low beam mode, only the first light source is activated to reduce energy consumption while maintaining adequate illumination. This local quality approach allows different regions (first light source vs. second light source) to have different operational states.
3Ease of manufacture
If conventional reflector configuration is used, then manufacturing simplicity is maintained, but light leakage and non-uniform illumination occur
Solution Approach 1:
The reflector unit is segmented into multiple reflector members (first reflector member, second reflector member, third reflector member) with distinct functions. Each reflector member is positioned and shaped to control specific light paths, preventing light leakage and ensuring uniform illumination distribution across the beam pattern.
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 solution effectively reduces light leakage, enhances aesthetics, and simplifies the structure by enabling the formation of high and sub low beam patterns with a single module, improving driver safety and visibility without creating shadow areas.
Implementation Method 1
a light guide unit including a first rod, to which the light is incident
Implementation Method 2
a reflector unit for reflecting the light emitted from the light guide unit through the first rod
Implementation Method 3
a lens unit for forming a first beam pattern by transmitting at least a part of the light reflected by the reflector unit through the lens unit
Data Source
AI summary
An automotive lamp comprises a first light source for generating light, a light guide unit including a first rod to which the light is incident, a reflector unit for reflecting the light emitted from the light guide unit through the first rod, and a lens unit for forming a first beam pattern by transmitting at least a part of the light reflected by the reflector unit. The reflector unit comprises a first reflector member for reflecting a first light among the light emitted from the light guide unit through the first rod, a second reflector member disposed in front of the first reflector member for reflecting a second light among the light emitted from the light guide unit through the first rod and the first light, and a third reflector member disposed below the second reflector member for reflecting the first light and the second light.