Vehicle Lamp with Inclined Substrate Modules
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Solution Overview
Problem
There is a demand for reducing the size of vehicle headlamps while maintaining effective beam patterns for safe driving, particularly in low light environments, and existing lamps face limitations in achieving compactness and efficient optical performance.
Innovation Solution
A vehicle lamp design featuring a light source unit with multiple modules and optical members, a shield, and a lens unit, where the light source modules are mounted on an inclined substrate, allowing for the integration of high and sub-low beams, and the use of different lens materials for improved heat resistance and chromatic aberration reduction, enabling miniaturization and enhanced optical efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If traditional head lamp components (light source, reflector, shield) are used to form beam patterns, then appropriate illumination function is achieved, but the size of the head lamp cannot be reduced
Solution Approach 1:
The patent combines the light source unit, shield, and lens unit into a single integrated head lamp assembly. The light source unit and shield are positioned relative to each other to form beam patterns directly, eliminating the need for separate reflector components. This merging of functions into unified components enables size reduction while maintaining beam pattern formation capability.
Solution Approach 2:
The shield serves multiple functions: it blocks light to form specific beam patterns, acts as a structural support element, and helps define the optical path. The lens unit also performs multiple roles including light distribution, beam shaping, and protection of internal components. This multi-functionality reduces the number of separate components needed, enabling compact design.
2Volume of moving object
If multiple light source modules and optical members are integrated, then optical efficiency is improved and compactness is achieved, but assembly complexity increases
Solution Approach 1:
The head lamp is divided into distinct modular units: a light source unit containing multiple light sources, a shield with specific geometric features, and a lens unit. Each module can be manufactured and tested independently, then assembled together. This segmentation manages complexity by breaking down the integrated design into manageable components with standardized interfaces.
Solution Approach 2:
Different regions of the shield and lens unit are designed with specific local properties optimized for their functions. The shield has varying thickness and geometry in different areas to control light distribution patterns. The lens unit has zone-specific refractive indices and surface curvatures to achieve precise beam shaping. This local optimization allows complex optical performance from modular components.
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 design achieves improved optical efficiency by implementing sub-low and high beams, simplifies assembly, and allows for a more compact and slim lamp structure, addressing the need for reduced size without compromising beam pattern effectiveness.
Implementation Method 1
a first optical member arranged corresponding to the first light source to emit light from the first light source to the lens unit; and a second optical member arranged corresponding to the second light source to emit light from the second light source to the lens unit
Data Source
AI summary
A lamp for a vehicle includes a light source unit for emitting light; a lens unit for irradiating the light emitted from the light source unit to exterior; and a shield disposed between the light source unit and the lens unit. The light source unit comprises a first light source module including at least one first light source, and at least one first optical member arranged corresponding to the first light source to emit light from the first light source to the lens unit; and a second light source module disposed above the first light source module, the second light source module including at least one second light source, and at least one second optical member arranged corresponding to the second light source to emit light from the second light source to the lens unit.