Vehicle Lighting Apparatus with Tilted Light Sources and Shared Reflector
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Solution Overview
Problem
Existing vehicle lighting systems lack efficient and compact designs that can provide both high and low beam lighting with varying intensities and shapes while maintaining regulatory compliance and minimizing size and heat dispersion issues.
Innovation Solution
A lighting apparatus comprising multiple light sources with tilt angles, a shared reflector, heat sink, and electronic control board, where each light source is positioned at a focus point of the reflector's respective portion to form collimated light cones, and a light shield to prevent light leakage, allowing for separate light cone projection without increasing system size or reducing efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple separate lighting systems are used for high and low beams, then lighting functionality is improved, but device size and structural complexity increase
Solution Approach 1:
The patent combines multiple lighting functions (high beam, low beam, daytime running lights) into a single integrated lighting assembly. Multiple light sources with different tilt angles are positioned within one housing and directed through a shared reflector system, eliminating the need for separate lighting systems while maintaining all required functions.
Solution Approach 2:
The lighting assembly is designed as a universal system that performs multiple functions simultaneously. A single housing contains light sources configured for different beam patterns, and a shared reflector system handles multiple light directions, allowing one device to replace what would traditionally require multiple separate components.
2Ease of operation
If light sources are positioned at different angles, then beam direction control is improved, but light leakage and efficiency are reduced
Solution Approach 1:
The patent introduces a light shield as an intermediary element positioned between light sources with different tilt angles and the reflector. This shield selectively blocks light from reaching unintended portions of the reflector, preventing light leakage while allowing the reflector to efficiently direct light from each source to its intended target area.
3Volume of moving object
If a shared reflector is used for multiple light sources, then device size is reduced, but manufacturing precision requirements increase
Solution Approach 1:
The reflector is designed with different portions having different optical properties and focal points. Each portion of the reflector is optimized to work with a specific light source at a specific tilt angle, directing its light to the appropriate target area. This local optimization allows the shared reflector to handle multiple light sources effectively while maintaining compact dimensions.
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 provision of high and low beam lighting with adjustable intensity and shape, meeting regulatory standards while maintaining a compact size and efficient heat management, thus enhancing visibility and longevity of the lighting system.
Implementation Method 1
The reflector is configured to have a reflection surface. The reflection surface has a first portion that reflects the first light and a second portion that reflects the second light.
Implementation Method 2
a light shield configured to block the first light to project to the second portion of the reflection surface and block the second light to project to the first portion of the reflection surface.
Data Source
AI summary
Aspects of the disclosure provide a lighting apparatus. The lighting apparatus includes a first light source, a second light source and a reflector. The first light source is configured to emit first light in a first direction. The second light source is configured to emit second light in a second direction with a tilt angle to the first direction. The reflector is configured to have a reflection surface. The reflection surface has a first portion that reflects the first light and a second portion that reflects the second light.