LED Column Optical Lens for Bilateral Light Distribution
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Solution Overview
Problem
Existing car side pilot lamp systems using LEDs struggle with achieving efficient light distribution to bilateral sides due to the narrow directivity of LEDs, requiring complex and costly configurations with multiple circuit boards and wiring, and existing lenses result in excessive light dispersion in unwanted directions, degrading radiation efficiency.
Innovation Solution
An optical lens is positioned in front of a light source with multiple LEDs arranged in parallel columns, featuring light distribution control parts that direct light from each column in specific directions, ensuring efficient light distribution to the required bilateral sides while minimizing unwanted dispersion.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single circuit board with LEDs is used, then the device complexity is reduced, but the luminous intensity in bilateral directions is insufficient due to narrow LED directivity
Solution Approach 1:
The optical lens is segmented into multiple light distribution control parts, with each part corresponding to a specific column of light-emitting elements. Each control part independently directs light from its corresponding LED column to the bilateral sides, enabling effective light distribution without requiring multiple circuit boards while maintaining sufficient luminous intensity in target directions.
2Illumination intensity
If a lens that diffuses light in all horizontal directions is used, then light distribution in bilateral sides is improved, but radiation efficiency deteriorates due to excessive light dispersion in unwanted directions
Solution Approach 1:
Each light distribution control part is designed with specific local optical properties to direct light from its corresponding LED column preferentially to the bilateral sides. The control parts define optical paths that guide light from light-emitting elements to emerge in directions intersecting the optical axes, concentrating light in desired bilateral directions rather than diffusing it uniformly in all horizontal directions, thus improving radiation efficiency while achieving adequate light distribution.
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 optical lens achieves efficient light distribution to bilateral sides with improved luminous intensity and reduced light loss in unwanted directions, simplifying the configuration and reducing costs, while maintaining sufficient light in the front direction for visibility.
Implementation Method 1
the light distribution control parts defining optical paths of light from the light-emitting elements on a column basis
Data Source
AI summary
An optical lens (10) capable of facilitating efficient light distribution control with a simple configuration is provided. It comprises a plurality of light distribution control parts (11) continuing in a bilateral direction such that each of the light distribution control parts corresponds to each column of LEDs (22), the light distribution control parts defining optical paths of light from the LEDs (22) on a column basis, one light distribution control part (11) discharges light entering from the LEDs (22) in a column corresponding thereto in one direction of the bilateral direction that intersects the optical axes, and a further light distribution control part (11) discharges light entering from the LEDs (22) in a column corresponding thereto in a further direction of the bilateral direction that intersects the optical axes.