Contoured Headlamp Reflector Integrating Passive Reflex Surface
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Solution Overview
Problem
Existing headlamp structures do not effectively utilize a reflex reflector to redirect light in an outboard direction while maintaining light aiming in a forward direction, which is crucial for vehicle safety features like reflex reflectors.
Innovation Solution
A contoured reflector with a reflex supporting portion that is integrally formed with a passive reflector, where the passive reflector is fixedly attached to the reflex supporting portion, allowing light to be emitted and reflected in a forward direction while also reflecting a portion of incoming light from the outboard side back in the outboard direction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a separate passive reflector is attached to the contoured reflector, then the reflex reflector function is achieved, but the device complexity increases
Solution Approach 1:
The passive reflector is integrated with the contoured reflector to form a unified structure, eliminating the need for separate attachment while maintaining both the headlight reflection function and the reflex reflector function. This merging reduces device complexity and improves reliability by eliminating potential failure points from separate components.
Solution Approach 2:
The contoured reflector structure is designed to perform multiple functions: it acts as both the primary headlight reflector and incorporates the passive reflector surface for reflex reflector functionality. This multi-functionality eliminates the need for additional separate components while achieving both lighting and safety reflection purposes.
2Reliability
If light is reflected in multiple directions, then vehicle safety is improved, but the light intensity in each direction is reduced
Solution Approach 1:
Different portions of the reflector surface are designed with different reflective properties: the contoured reflector surface directs light forward for illumination, while the integrated passive reflector surface redirects light for reflex safety indication. This local differentiation allows multiple functions to coexist with adequate intensity in each direction.
Solution Approach 2:
The passive reflector surface is designed to reflect only a portion of the incoming light in the outboard direction, while the majority of light continues its primary forward direction. This partial action ensures that sufficient light intensity is maintained for both the primary illumination function and the secondary safety reflection function.
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
This configuration enhances vehicle safety by ensuring that light is directed forward while also providing a reflex indication to approaching drivers, improving visibility and awareness through the use of a reflex reflector that reduces brightness and diffuses light appropriately.
Implementation Method 1
each of the plurality of reflector surface portions being shaped and configured to reflect light from the corresponding one of the plurality of light emitting elements and aim the reflected light to project in a forward direction
Implementation Method 2
The reflector surface of the passive reflector is configured and oriented such that at least a portion of light approaching the passive reflector from outboard of the outboard side of the contoured reflector panel is reflected back in the outboard direction
Data Source
AI summary
A headlamp structure has a contoured reflector panel with a forward-facing surface and a reflex supporting portion. The forward-facing surface has a plurality of reflector surface portions. The reflex supporting portion extends forward from an inboard side inboard of the reflector surface portions. A passive reflector is attached to the reflex supporting portion with a reflector surface that faces an outboard direction relative to the forward-facing surface. Each of the plurality of reflector surface portions is shaped and configured to reflect light from a corresponding one of a plurality of light emitting elements and aim the reflected light to project in a forward direction parallel to the reflector surface of the passive reflector. The reflector surface of the passive reflector is configured such that at least light approaching the contoured reflector panel from outboard of an outboard side of the contoured reflector panel is reflected back in the outboard direction.