Side-Emitting LED Module Lens Refraction for Uniform Brightness
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Solution Overview
Problem
Conventional LED modules for vehicle lamps suffer from limited light distribution, increased weight, and restricted design due to the need for reflective structures to redirect light, resulting in non-uniform brightness and increased volume.
Innovation Solution
An LED module design featuring a light emitting part that emits light through side surfaces, surrounded by a lens part and a panel part with an indentation region, allowing for uniform light distribution without additional space, reducing weight and volume, and enhancing brightness uniformity by using fine optics and a deposition layer to reflect light at various angles.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If a reflective plate is used to redirect light to lateral sides, then light distribution is improved, but the volume and weight of the LED module increase
Solution Approach 1:
The patent removes the reflective plate from the traditional LED module structure and replaces it with a lens part that has a specific refractive index and shape. This extraction of the reflective plate eliminates the need for additional space while achieving the desired light distribution through optical refraction instead of reflection.
Solution Approach 2:
The patent substitutes the mechanical reflective plate with an optical lens system. The lens part, positioned between the LED chip and the outer surface, uses refraction to control light direction rather than relying on reflective surfaces. This substitution reduces the overall module volume while maintaining light distribution effectiveness.
2Illumination intensity
If a reflective plate and other structures are added to redirect light, then light distribution is improved, but the weight of the LED module increases
Solution Approach 1:
The patent extracts and removes the reflective plate and other heavy structural components from the LED module. By eliminating these unnecessary elements and relying solely on the lens part's optical properties, the overall weight of the module is significantly reduced while maintaining effective light distribution.
Solution Approach 2:
The patent replaces heavy mechanical reflective structures with a lightweight optical lens system. The lens part, made from transparent material with appropriate refractive index, provides the necessary light redirection functionality with minimal weight compared to traditional reflective plates and associated structures.
3Illumination intensity
If reflective structures are used to redirect light, then light distribution is improved, but the arrangement flexibility and design freedom are restricted
Solution Approach 1:
The patent removes the reflective plate and associated structural components that constrained design flexibility. By extracting these elements, the LED module achieves greater arrangement flexibility and design freedom while maintaining effective light distribution through the lens part's optical properties.
Solution Approach 2:
The patent substitutes rigid mechanical reflective structures with a flexible optical lens system. The lens part can be integrated into various module configurations and arrangements without requiring specific structural support or alignment mechanisms, thereby enhancing design flexibility and adaptability.
4Device complexity
If light is emitted only in forward direction, then the LED structure is simple, but the brightness uniformity is poor
Solution Approach 1:
The patent introduces a lens part with specific optical properties to control light distribution. The lens, positioned between the LED chip and the outer surface, uses refraction to redirect light rays and achieve uniform brightness distribution across the module, replacing the need for complex reflective structures.
Solution Approach 2:
The patent changes the optical parameters of the light transmission system by introducing a lens with a specific refractive index and shape. This parameter change enables the light to be redistributed from a simple forward emission pattern to a uniform distribution pattern, improving brightness uniformity without significantly increasing structural complexity.
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 achieves reduced volume and weight, secures uniform brightness, and increases the quantity of light directed to the front side, eliminating the need for reflective plates and allowing for a more flexible design.
Implementation Method 1
a light emitting part that is electrically connected to the substrate part, is disposed in front of the substrate part, and emits light through a side surface thereof
Implementation Method 2
a lens part surrounding the side surface of the light emitting part and disposed in front of the substrate part
Implementation Method 3
a reflective layer that is coupled to a rear surface of the front region of the lens part and reflects light
Data Source
AI summary
A light emitting diode (LED) module and a vehicle including the same, the LED module including a cover part, a substrate part connected to a front side of the cover part, a light emitting part that is electrically connected to the substrate part, is disposed in front of the substrate part, and emits light through a side surface thereof, and a lens part surrounding the side surface of the light emitting part and disposed in front of the substrate part, wherein the lens part has a fine protrusion shape on an outer surface thereof.