Multi-Layer LED Condensing Lens Array for Uniform Illumination
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Solution Overview
Problem
Existing LED light condensing systems for multiple LEDs are costly, require high processing and installation accuracy, and achieve uneven light condensing over long distances, making them inefficient and difficult to focus.
Innovation Solution
A multiple LED condensing system with a flat substrate and multiple layers of condensing lenses, including first, second, third, and fourth condensing lenses, which converge divergent light into nearly parallel beams, allowing for easy installation and heat dissipation, and achieving 80% light flux concentration with improved optical efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If an arcuate curved sheet is used as the light source substrate, then light condensing can be achieved by changing the angle of each LED, but the processing difficulty and installation accuracy requirements increase significantly
Solution Approach 1:
The patent changes the geometric parameter of the substrate from an arcuate curved shape to a flat plane, simplifying manufacturing while maintaining light condensing functionality through optical parameter optimization in the lens groups
Solution Approach 2:
The patent divides the light condensing function into multiple discrete lens groups (first, second, third condensing lens groups) that can be independently optimized and assembled, reducing the complexity requirements for the substrate itself
2Illumination intensity
If an arcuate curved sheet is used with fixed LED positions, then light condensing is achieved, but the system cannot be refocused and requires heavy collating work of multiple lenses
Solution Approach 1:
The patent makes the optical system dynamic by allowing independent adjustment of lens groups and LED positions on the flat substrate, enabling the system to adapt to different focusing requirements without reprocessing the substrate
Solution Approach 2:
The patent segments the optical system into independently adjustable components (multiple lens groups and individually positionable LEDs), allowing flexible reconfiguration for different focusing needs
3Illumination intensity
If traditional light condensing methods are used, then light can be focused, but the shot group is big, condensing distance is long, and light condensing is uneven
Solution Approach 1:
The patent divides a single large condensing function into multiple smaller lens groups (first, second, third condensing lens groups) that work in sequence, reducing the overall shot group size and enabling shorter condensing distances
Solution Approach 2:
The patent introduces a multi-layer optical structure with lens groups arranged in different spatial dimensions and planes, achieving uniform light condensing through three-dimensional optical path control rather than simple two-dimensional arrangement
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 system enables easy processing and installation of LED light sources, reduces focusing time, enhances optical efficiency by 80%, and achieves uniform short-distance light condensing, suitable for imaging applications with a simple and cost-effective structure.
Implementation Method 1
each first condensing lens disposed at front of each LED... each second condensing lens is disposed at front of each first condensing lens... each third condensing lens is disposed at front of each second condensing lens... a fourth condensing lens disposed at front of the third condensing lens group
Data Source
AI summary
A condensing system and method with a plurality of LEDs is disclosed. The LEDs are positioned on the same plane. A first condensing lens is disposed at front of each LED, a second condensing lens is disposed at front of each first condensing lens, a third condensing lens is disposed at front of each second condensing lens, and a fourth condensing lens is disposed at front of all the third condensing lenses. After the light emitted by each LED is condensed by the corresponding first condensing lens, second condensing lens and third condensing lens, the divergence angle of the light becomes smaller, forming a bunch of nearly parallel light beams. The bunches of nearly parallel light beams simultaneously transmit through the fourth condensing lens, and then combine. The condensing system can be used as the light source with imaging lenses disposed therebehind to form an imaging system.