Aspherical Lens Module Integrating Position Light Without Size Increase
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Solution Overview
Problem
Conventional aspherical lenses in vehicle headlamps are not designed to incorporate a position light function without increasing the size of the lamp module, which can reduce high beam performance when a portion of the high beam reflector is used for position lights.
Innovation Solution
An aspherical lens module with a prism part and diffusion optic protrusions along its edge, allowing light to be incident, reflected, and scattered, enabling the addition of a position light function to low or high beams without increasing the lamp module size, and maintaining the required light quantity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the lamp module size is increased to accommodate a position light function, then the position light function can be added, but the high beam performance is reduced
Solution Approach 1:
The aspherical lens is designed to perform multiple functions: it serves as the primary lens for low beam and high beam functions while simultaneously incorporating edge structures (prism parts and diffusion optic protrusions) that enable position light function. This multi-functionality allows the lens to accommodate position lights without requiring additional space or reducing high beam performance.
Solution Approach 2:
The lens structure is modified locally at its edge portions while maintaining the overall aspherical shape needed for low beam and high beam functions. The prism parts and diffusion optic protrusions are specifically positioned at the edge to scatter light for position lights, without interfering with the central optical path required for main beam functions.
2Adaptability or versatility
If a portion of the high beam reflector is used as the position light, then the position light function is achieved, but the high beam performance is reduced
Solution Approach 1:
The aspherical lens is designed to perform multiple functions: it serves as the primary lens for low beam and high beam functions while simultaneously incorporating edge structures (prism parts and diffusion optic protrusions) that enable position light function. This multi-functionality allows the lens to accommodate position lights without requiring additional space or reducing high beam performance.
Solution Approach 2:
The lens structure is modified locally at its edge portions while maintaining the overall aspherical shape needed for low beam and high beam functions. The prism parts and diffusion optic protrusions are specifically positioned at the edge to scatter light for position lights, without interfering with the central optical path required for main beam functions.
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
Enables the integration of a position light function with existing low or high beam functions without size increase, ensuring adequate luminance and visibility without reducing the quantity of required light.
Implementation Method 1
The aspherical lens is configured to allow light from the light source to be incident on an edge of the aspherical lens and to allow the incident light to travel along the edge of the aspherical lens by reflection
Implementation Method 2
The edge of the aspherical lens includes a prism part to scatter the incident light
Data Source
AI summary
Disclosed is an aspherical lens module of a vehicle headlamp configured such that a position light function is added to the existing functions of a low beam or high beam without increasing the size of the lamp module. Further, the aspherical lens module of a headlamp is configured such that the quantity of required light of a low beam or high beam is not reduced when the position light function is added to them.