Dual Beam Headlamp Using Segmented LED Array
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Solution Overview
Problem
Conventional headlamps require multiple units or blocking mechanisms to produce high-beam and low-beam light patterns, leading to increased size, reduced precision, and energy inefficiency due to unnecessary light blocking.
Innovation Solution
A headlamp assembly with a reflector, circuit board, and optical lens that uses two sets of light-emitting elements arranged on a circuit board to generate high-beam and low-beam patterns without blocking any components, utilizing an optical lens to form both patterns efficiently.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If conventional headlamps use blocking mechanisms to form different light patterns, then high-beam and low-beam patterns can be formed, but the overall size of the headlamp increases
Solution Approach 1:
The headlamp is segmented into multiple independent light emitting elements arranged in specific patterns. Each element can be independently controlled to generate high-beam or low-beam light patterns, eliminating the need for blocking mechanisms and reducing overall headlamp size.
Solution Approach 2:
The same light emitting elements serve multiple functions by being arranged in different patterns and controlled differently. The elements can generate both high-beam and low-beam light patterns without requiring separate headlamps or blocking components, achieving multi-functionality in a compact design.
2Adaptability or versatility
If blocking mechanisms are used to form light patterns, then different beam patterns can be produced, but the light patterns become less precise or crisp
Solution Approach 1:
By segmenting the light source into multiple individually controllable elements arranged in precise patterns, the system achieves crisp and precise light patterns. Each element contributes to the overall pattern without being blocked, maintaining edge definition and pattern precision.
3Adaptability or versatility
If blocking mechanisms are used to form light patterns, then different beam patterns can be produced, but power is wasted because light is blocked
Solution Approach 1:
The light source is segmented into multiple independently controllable elements. By selectively activating specific segments rather than blocking light from all elements, the system maximizes energy utilization and reduces power waste while still achieving different light patterns.
Solution Approach 2:
Instead of blocking and wasting light energy, the system selectively activates only the necessary light emitting elements for the desired pattern. This approach recovers energy by not generating unnecessary light in the first place, improving overall energy efficiency.
4Adaptability or versatility
If multiple headlamps are used to form high beams and low beams, then both beam patterns can be generated, but the device complexity increases
Solution Approach 1:
The patent merges the functions of separate high-beam and low-beam headlamps into a single integrated headlamp assembly. Multiple light emitting elements are combined in specific arrangements that enable both beam patterns from one device, reducing system complexity while maintaining versatility.
Solution Approach 2:
A single headlamp assembly is designed to perform multiple functions by incorporating light emitting elements that can generate both high-beam and low-beam patterns. This multi-functional design eliminates the need for separate headlamps, simplifying the overall system.
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 enables a compact, energy-efficient, and precise dual-beam headlamp that produces crisp light patterns by using all generated light, eliminating the need for blocking mechanisms and reducing waste.
Implementation Method 1
an optical lens that is attached to the headlamp reflector, that includes a first optical surface and a second optical surface, and that is configured to optically form a low-beam light pattern and a high-beam light pattern from the light generated from the plurality of light emitting elements through the optical lens
Data Source
AI summary
A headlamp assembly is provided that includes a circuit board that is attached to the bottom of a headlamp reflector and that includes a plurality of light emitting elements. The plurality of light emitting elements are arranged on the circuit board in a high-beam and low-beam producing pattern configured to generate light toward the outer edge of the headlamp reflector. The headlamp assembly also includes an optical lens that includes a first optical surface and a second optical surface. The optical lens optically forms a low-beam light pattern and a high-beam light pattern from the light generated from the plurality of light emitting elements through the optical lens.