Rotating Transmissive Fluorescent Module for Thermal Quenching
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Solution Overview
Problem
Conventional transmissive fluorescence emitting modules experience a thermal quenching phenomenon due to insufficient heat dissipation, leading to reduced fluorescence emission and low light usage efficiency.
Innovation Solution
A transmissive fluorescence emitting module comprising a fluorescent substrate with a metal member bonded to its surface and a rotator that rotates the substrate and metal member, enhancing heat dissipation through air currents and thermal conductivity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If the fluorescence generator is irradiated with excitation light to generate fluorescence, then fluorescence emission is achieved, but temperature increases causing thermal quenching phenomenon
Solution Approach 1:
The patent extracts the harmful thermal effect from the fluorescence generation process by introducing a reflective member that redirects excitation light away from the fluorescence generator. This separation allows fluorescence emission to continue while preventing excessive heat accumulation that causes thermal quenching.
Solution Approach 2:
The reflective member acts as an intermediary element between the excitation light source and the fluorescence generator. It mediates the interaction by reflecting excitation light, thereby controlling the thermal load on the fluorescence generator while maintaining fluorescence emission efficiency.
2Productivity
If excitation light is continuously irradiated to maintain fluorescence emission, then light usage efficiency is achieved, but heat accumulation reduces fluorescence output
Solution Approach 1:
The reflective member creates a periodic action by reflecting excitation light in a controlled manner. This periodic redirection of light allows the system to maintain fluorescence emission while periodically reducing thermal load, preventing heat accumulation and maintaining emission stability.
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 effectively reduces thermal quenching and increases light usage efficiency by improving heat dissipation and maintaining fluorescence emission.
Implementation Method 1
a metal member bonded to a principal surface that the fluorescent substrate includes
Implementation Method 2
a rotator that rotates the fluorescent substrate and the metal member about an axis extending in a thickness direction of the fluorescent substrate
Implementation Method 3
a fluorescent substrate that consists essentially of a fluorescent material
Data Source
AI summary
A transmissive fluorescence emitting module includes: a fluorescent substrate that consists essentially of a fluorescent material; a metal member bonded to a principal surface that the fluorescent substrate includes; and a rotator that rotates the fluorescent substrate and the metal member about an axis extending in a thickness direction of the fluorescent substrate. In a plan view of the fluorescent substrate, the fluorescent substrate includes a region that does not overlap the metal member, the region being annular ring-shaped.