Vehicle Headlight Primary Optics Light Tunnel Bend Imaging
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Solution Overview
Problem
Current vehicle headlight lenses struggle to optimize light distribution, particularly in transitioning from a light tunnel to a wedge-shaped light conducting part, leading to inefficiencies in imaging the bend as a bright dark boundary, which affects the overall illumination pattern and cost-effectiveness.
Innovation Solution
A vehicle headlight design featuring a press-molded primary optics with a light tunnel transitioning into a wedge-shaped light conducting part, utilizing a secondary optics with a tilted light exit surface to enhance imaging and light distribution, incorporating materials like inorganic glass and plastic, and employing ellipsoidal shapes for the light tunnel surfaces to control light refraction and reflection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If a light tunnel transitions into a wedge-shaped light conducting part, then light distribution can be controlled, but the imaging of the bend as a bright dark boundary becomes inefficient
Solution Approach 1:
The patent applies curved surfaces instead of flat geometry to control light propagation. The light tunnel is designed with specific curvature radii (first and second curvature radii) to guide light efficiently, while the wedge-shaped light conducting part uses curved transition surfaces to manage the bend imaging. This curvature-based approach allows simultaneous optimization of light distribution control and imaging quality.
Solution Approach 2:
The patent implements different geometric properties in different regions of the optics. The light tunnel section has specific curvature radii for light guidance, while the light conducting part has a wedge shape with specific angles for light distribution. Each region is optimized locally for its specific function, allowing the bend transition to be imaged effectively while maintaining good light distribution.
2Ease of manufacture
If conventional headlight lenses are used, then manufacturing is simpler, but light distribution optimization is insufficient
Solution Approach 1:
The patent divides the optics into distinct functional sections: a light tunnel section with specific curvature for light collection and guidance, and a light conducting part with wedge shape for light distribution. This segmentation allows each section to be optimized independently for its specific function while maintaining manufacturability through integrated design.
Solution Approach 2:
The patent optimizes light distribution by carefully selecting geometric parameters such as the first and second curvature radii of the light tunnel, the wedge angle of the light conducting part, and the relative positioning of these sections. These parameter adjustments enable controlled light propagation without significantly complicating the manufacturing process.
3Illumination intensity
If the light tunnel has specific curvature radii, then light refraction is controlled, but the structure becomes more complex
Solution Approach 1:
The patent combines the light tunnel and light conducting part into a single integrated optics component. The light tunnel with its specific curvature radii is directly connected to the wedge-shaped light conducting part, merging two functional elements into one structure. This integration reduces the number of separate components and assembly steps while maintaining the optical performance benefits of both sections.
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 a more efficient and cost-effective light distribution by concentrating illumination below the bright dark boundary, increasing horizontal illumination while reducing vertical illumination, and maintaining high light intensity at the lower edge, thus improving the overall headlight performance and manufacturing cost.
Implementation Method 1
incorporating materials like inorganic glass and plastic, and employing ellipsoidal shapes for the light tunnel surfaces to control light refraction and reflection
Implementation Method 2
incorporating materials like inorganic glass and plastic, and employing ellipsoidal shapes for the light tunnel surfaces to control light refraction and reflection
Implementation Method 3
the light tunnel transitions with a bend into the light conducting part, and the vehicle headlight comprising a secondary optics having an optically effective light exit surface for imaging a light exit surface of the primary optics and/or of the light conducting part or for imaging the bend
Data Source
AI summary
The disclosure relates to a vehicle headlight (20), for example a motor vehicle headlight, wherein the vehicle headlight comprises a light source assembly (11) and a primary optics (200A), for example a press-molded primary optics, for example a one-piece primary optics (200A), wherein the primary optics (200A) comprises at least one light tunnel (208) and a wedge-shaped light conducting part (209) having at least one light exit surface (209A), for example optically effective light exit surface (209A), wherein the light tunnel (208) comprises at least one light entrance surface (201), for example an optically effective light entrance surface (201), into which light generated by means of the light source assembly (11) can be irradiated, wherein the light tunnel (208) transitions into the light conducting part (209) at a bend (207), and wherein the vehicle headlight comprises a secondary optics (200B) with an optically effective light exit surface (202) for imaging a light exit surface (209A) of the primary optics (200A) and/or of the light conducting part (209) or for imaging the bend (207).