Quantum Dot Lighting Device With Integrated Light Guide
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Solution Overview
Problem
Existing lighting devices using quantum dots face challenges in achieving uniform light distribution within sealed containers, particularly in elongated or arbitrarily shaped configurations, leading to non-homogeneous light emission.
Innovation Solution
A lighting device with a sealed, light-transmissive container containing quantum dots dispersed in a medium and an integrated light guiding member that optically couples with a light source, ensuring uniform light distribution by extending the light guiding member from internal surfaces into the container.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If a light source is used to excite quantum dots in a sealed container, then light emission is produced, but uniform light distribution is difficult to achieve especially in elongated or arbitrarily shaped containers
Solution Approach 1:
A light guiding member is introduced as an intermediary component between the light source and the quantum dot emissive material. This member extends from the internal surface of the container into the interior, serving as a mediator that distributes light uniformly throughout the container volume, resolving the contradiction between achieving uniform illumination and dealing with complex container shapes.
Solution Approach 2:
The light guiding member extends into the third dimension (from the internal surface into the interior volume), transforming the light distribution from a surface-based approach to a volumetric approach. This dimensional extension allows uniform light distribution throughout the entire container space, overcoming the limitations imposed by elongated or arbitrary container geometries.
2Illumination intensity
If quantum dots are dispersed in a medium within a sealed container, then light emission is achieved, but non-homogeneous light emission occurs due to uneven light distribution
Solution Approach 1:
The light guiding member acts as an intermediary that ensures homogeneous distribution of excitation light to the quantum dot emissive material throughout the container. This mediator component addresses the non-uniform light emission problem by providing consistent light intensity across all regions where emissive material is present.
3Adaptability or versatility
If the container is designed with elongated or arbitrary shapes, then design flexibility is improved, but light source coupling becomes difficult
Solution Approach 1:
The light guiding member serves as a flexible intermediary that can be integrated into containers of various shapes and sizes. By extending from the internal surface into the interior, it adapts to different container geometries while maintaining effective light distribution, thus resolving the contradiction between design flexibility and integration complexity.
Solution Approach 2:
The light guiding member provides a universal solution that works across multiple container configurations (elongated, arbitrary shapes, etc.). This single component design achieves multi-functionality by adapting to various geometries while consistently providing uniform light distribution, reducing the need for shape-specific light source integration designs.
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 homogeneity of light emission by ensuring even excitation of quantum dots, improving light output uniformity across the device, especially in complex container geometries.
Implementation Method 1
a light guiding member, at least a portion of which is included in the sealed container, wherein the light guiding member extends from an internal surface of the container into the interior of the container
Implementation Method 2
at least one emissive material comprising quantum dots dispersed in a medium
Data Source
AI summary
A lighting device including an emissive material comprising quantum dots and a liquid medium disposed within a sealed container with at least a portion of a light guiding member disposed within the sealed container. Products including a lighting device in accordance with the invention are also disclosed.