LED Array Center-Optic Alignment for Transmission Efficiency
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Solution Overview
Problem
Current light source systems using LED arrays face inefficiencies in light transmission due to the alignment of light emitting elements relative to the optical axis of the collection optic, resulting in reduced performance as the angle of light emission deviates from parallel to the axis.
Innovation Solution
Positioning the best performing light emitting elements at the center of the array aligned with the optical axis and progressively placing less efficient elements farther away, optimizing light emission parallel to the axis for higher transmission efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If light emitting elements are arranged in an array with the optical axis at the center, then transmission efficiency for parallel rays is improved, but transmission efficiency for non-parallel rays deteriorates
Solution Approach 1:
The patent applies local quality by positioning high-performance light emitting elements specifically at the center region of the array where they can emit light parallel to the optical axis with maximum efficiency, while accepting that elements at peripheral positions will have lower transmission efficiency for non-parallel rays. This creates a spatial variation in element quality that optimizes overall system performance.
Solution Approach 2:
The patent implements preliminary action by pre-selecting and pre-positioning the best performing light emitting elements at the center of the array during the manufacturing process. This ensures that when the device is assembled, the optimal elements are already in the optimal positions, maximizing parallel ray transmission without requiring complex real-time adjustments.
2Productivity
If the optical axis is positioned at the center of the array, then overall system efficiency is improved, but manufacturing complexity increases
Solution Approach 1:
The patent applies segmentation by dividing the light emitting element array into distinct regions: a central region containing the best performing elements aligned with the optical axis, and peripheral regions containing standard elements. This segmentation simplifies the design process by clearly defining functional zones rather than requiring complex individual optimization of each element position.
Solution Approach 2:
The patent implements parameter changes by varying the performance characteristics of light emitting elements based on their position in the array. The central elements are selected with higher performance parameters (brightness, efficiency) compared to peripheral elements, creating a gradient that optimizes overall system efficiency while managing manufacturing 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
This configuration enhances the overall efficiency of the light source system by maximizing the transmission of light rays parallel to the optical axis, thereby improving the overall performance and efficiency of the optical system.
Implementation Method 1
a collection optic having an optical axis, the collection optic optically coupled to the array such that the optical axis is located at approximately a center of the array
Implementation Method 2
a lens using sections of total internal reflection surfaces
Data Source
Figure 1~3
Figure 4A~6
AI summary
A light system includes a plurality of light emitting elements, such as light emitting diodes, arranged in an array. One or more light emitting elements are positioned in a center region of the array. The light emitting elements in the center region have superior performance, such as luminance and/or efficiency, relative to the remainder of the light emitting elements in the array. A second region that is outside the center region, i.e., farther from the center of the array, include a second group of light emitting elements that have superior performance relative to any additional light emitting elements in the array. The array may include additional regions farther from the center of the array that include light emitting elements with lower performance. A collection optic having an optical axis is optically coupled to the array such that the optical axis is located at approximately the center of the array.