Matrix Lighting Device for Vehicle Using Segmented LED Modules
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Solution Overview
Problem
Traditional vehicle headlamps with Adaptive Driving Beam (ADB) modules are bulky and heavy due to the large distance between LEDs, causing dangerous dazzling to other road users and compromising night driving safety.
Innovation Solution
A matrix lighting device with a light source module comprising independently controlled light sources, light shields, and light receiving lenses arranged in a matrix, which reduces the overall size and weight by minimizing light interference and using a combination of lenses with different refractive indices to achieve adaptive and safe lighting.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If the distance between LEDs is increased to avoid dazzling, then the safety of other road users is improved, but the size and weight of the headlamp structure increases
Solution Approach 1:
The headlamp is divided into multiple independently controllable LED modules arranged in a matrix pattern. Each LED can be individually controlled to create specific lighting patterns, allowing precise control over where light is projected and where it is blocked, thereby avoiding dazzling while maintaining a compact overall structure.
Solution Approach 2:
Light blocking elements (shutters or masks) are introduced as intermediary components between the LED light sources and the projection lens. These intermediaries selectively block light from specific LEDs in specific directions, preventing dazzling to other road users while allowing the LEDs to remain close together in a compact arrangement.
2Object-affected harmful factors
If the distance between LEDs is increased to avoid dazzling, then the safety of other road users is improved, but the volume of the headlamp structure increases
Solution Approach 1:
The headlamp is divided into multiple independently controllable LED modules arranged in a matrix pattern. Each LED can be individually controlled to create specific lighting patterns, allowing precise control over where light is projected and where it is blocked, thereby avoiding dazzling while maintaining a compact overall structure.
Solution Approach 2:
The lighting control is extended from simple on/off switching to three-dimensional spatial control by using light blocking elements positioned at different locations and angles. This allows selective blocking of light in specific directions while maintaining illumination in other directions, achieving dazzling avoidance without increasing volume.
3Volume of moving object
If multiple light sources are arranged in a matrix with light shields and light receiving lenses, then the size of the light source module is reduced, but the device complexity increases
Solution Approach 1:
Multiple functional components (LED light sources, light receiving lenses, and light blocking elements) are merged into an integrated matrix assembly where corresponding components are aligned in rows and columns. This merging allows the system to achieve compact size while managing complexity through systematic arrangement and shared control architecture.
Solution Approach 2:
The matrix arrangement of LEDs, lenses, and blocking elements creates a universal control structure where the same basic components serve multiple functions. Each LED-lens-blocker triplet can independently control light projection, and the matrix pattern allows systematic scaling and control, reducing overall system complexity despite the number of 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 matrix lighting device effectively reduces the risk of dazzling by independently controlling light sources and shields, ensuring safe night driving while minimizing the device's size and weight, and maintaining high-quality lighting without color separation issues.
Implementation Method 1
a light emitted by the light source in the light source array unit successively passes through the light receiving lens, the projection lens and the projection emergent space along the optical axis direction
Implementation Method 2
the light emitted by the light source in the light source array unit successively passes through the light receiving lens, the projection lens and the projection emergent space along the optical axis direction, and forms a matrix light distribution on the projection image plane
Data Source
AI summary
The present disclosure provides a matrix lighting device for a vehicle, including a light source module, a projection lens, a projection emergent space, and a projection image plane arranged successively along an optical axis direction; the light source module comprises a light source array unit, a light shield array unit and a light receiving lens array unit arranged successively along the optical axis direction; the light source array unit includes a plurality of light sources which are independently controlled and arranged in a matrix; the light shield array unit includes a plurality of light shields arranged in a matrix and disposed outside each light source; the light receiving lens array unit includes a plurality of light receiving lenses arranged in a matrix and disposed opposite to each light source along the optical axis direction.