Overlapping LED Emitter Regions for Adaptive Headlight Control
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Solution Overview
Problem
Conventional semiconductor-based light sources lack the ability to provide variable and adaptive illumination modes, and are costly, especially in applications like fine-pixel adaptive front headlights, which require complex mechanical components for beam control.
Innovation Solution
A lighting device comprising base chips and cover emitter regions, where the cover emitter regions are arranged in a partially overlapping manner with the base chips, allowing independent electrical control and alignment of emission directions, enabling efficient and cost-effective adaptive illumination without mechanical components.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If conventional semiconductor-based light sources are used, then the structure is simple, but the ability to provide variable and adaptive illumination modes is lacking
Solution Approach 1:
The lighting device is divided into multiple independently controllable emitter regions (first emitter region, second emitter region, third emitter region) with different emission characteristics. Each region can be controlled separately to achieve various illumination modes including basic illumination, point illumination, and adaptive illumination patterns.
Solution Approach 2:
Multiple emitter regions with different emission characteristics are combined into a single integrated semiconductor component. The first emitter region provides basic illumination, the second emitter region provides point illumination, and the third emitter region enables adaptive illumination, all within one device structure.
2Adaptability or versatility
If fine-pixel adaptive front headlights with individual micro-LEDs are used, then adaptive illumination is achieved, but the cost increases significantly
Solution Approach 1:
The semiconductor component is segmented into distinct emitter regions that can be independently controlled, providing adaptive illumination functionality without requiring individual micro-LEDs for each pixel. This reduces manufacturing complexity and cost while maintaining adaptability.
Solution Approach 2:
A single semiconductor component performs multiple functions through its different emitter regions: basic illumination, point illumination, and adaptive illumination. This multi-functionality eliminates the need for separate components or complex mechanical systems, reducing overall cost.
3Manufacturing precision
If mechanical components are used for beam control, then precise beam direction is achieved, but the device complexity and cost increase
Solution Approach 1:
Mechanical beam control components are replaced with electrically controlled emitter regions on a semiconductor chip. The different emitter regions can be selectively activated to control beam direction and pattern without any moving parts, eliminating mechanical complexity while maintaining precision.
Solution Approach 2:
The lighting device achieves dynamic beam control through electrical switching between different emitter regions rather than mechanical movement. This allows rapid adjustment of illumination patterns and beam directions purely through electronic control signals.
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 solution allows for efficient, cost-effective implementation of adaptive illumination modes, including basic and point illumination, with controlled spatial and angular radiation, enhancing emission characteristics and reducing costs compared to conventional systems.
Implementation Method 1
The at least one base chip and the cover emitter regions, that is the at least one cover chip, are in each case light-emitting diode chips
Implementation Method 2
the at least one base chip radiates through the at least one cover emitter region which is arranged on said base chip
Data Source
AI summary
A lighting device (1) and an operating method for the lighting device (1), which comprises at least one base chip (21) and a plurality of cover emitter regions (22). The base chip or chips (21) and the cover emitter regions (22) are realized by light-emitting diode chips and are electrically controlled independently of one another. Main emission directions (M) of these light-emitting diode chips are oriented parallel to one another. The cover emitter regions (22) are partially overlapping with the at least one base chip (21), so that an overlap region (3, B) is formed and the at least one base chip (21) radiates through the cover emitter regions (22) during operation. The cover emitter regions (22) are arranged in a common plane perpendicular to the main emission directions (M).