Light Emitting Element Optical Path Control Units
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Solution Overview
Problem
The manufacturing of solid-state light emitting elements with hemispherical recessed structures is complex, limiting design freedom and prone to optical crosstalk between adjacent elements, with existing solutions not addressing these issues effectively.
Innovation Solution
A light emitting element configuration featuring a light emitting unit with a first optical path control unit group and a second optical path control unit, both with positive optical power, to focus and further concentrate light emitted from the unit, reducing manufacturing complexity and optical crosstalk.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a hemispherical recessed structure is provided on the light emitting surface to improve light extraction efficiency, then light extraction efficiency is improved, but manufacturing complexity increases and design freedom is limited
Solution Approach 1:
The patent applies spheroidality by providing a hemispherical recessed structure on the light emitting surface of the solid-state light emitting element. This curved geometric form enhances light extraction efficiency by reducing total internal reflection at the interface, allowing light to escape more effectively in multiple directions rather than being trapped by flat surface geometry.
2Reliability
If a hemispherical recessed structure is provided to improve light extraction, then light extraction efficiency is improved, but the degree of freedom in designing light emitting bodies is reduced
Solution Approach 1:
The hemispherical recessed structure provides a standardized curved geometry that can be applied to various light emitting body designs without fundamentally changing the underlying design methodology. This modular approach to light extraction enhancement maintains design freedom while achieving improved optical performance across different device configurations.
3Reliability
If a hemispherical recessed structure is provided on the light emitting surface, then light extraction efficiency is improved, but optical crosstalk between adjacent elements may occur
Solution Approach 1:
The patent applies local quality by providing the hemispherical recessed structure only on the light emitting surface where light extraction is needed, while maintaining different structures or configurations in other regions. This localized optimization allows improved light extraction at the emission interface without necessarily affecting adjacent elements, thereby reducing optical crosstalk while maintaining efficiency gains.
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 simplifies manufacturing, enhances design flexibility, and minimizes optical crosstalk, improving light extraction efficiency and overall performance of the light emitting elements.
Implementation Method 1
the first optical path control units and the second optical path control unit have positive optical power, and light emitted from the light emitting unit and focused by the first optical path control units is further focused by the second optical path control unit
Data Source
AI summary
A light emitting element (10) includes a light emitting unit (30) including one light emitting region, a first optical path control unit group consisting of a plurality of first optical path control units (71) formed above the light emitting unit (30), and a second optical path control unit (72) formed on or above the first optical path control unit group, wherein the first optical path control units 71 and the second optical path control unit (72) have positive optical power, and light emitted from the light emitting unit (30) and focused by the first optical path control units (71) is further focused by the second optical path control unit (72).