Phosphorescent Light-Emitting Package for Extended Afterglow
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Solution Overview
Problem
Conventional light-emitting modules require continuous electrical energy supply to maintain light emission, which is not energy-efficient and does not allow for light storage, limiting their usage and energy savings.
Innovation Solution
A light-emitting package incorporating a phosphorescent powder that absorbs light energy, enabling continued emission after power cutoff, combined with a microcontroller and ambient light sensor to optimize power usage, and a light guide column with phosphorescent powder for autonomous light emission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Duration of action of moving object
If continuous electrical energy is supplied to maintain light emission, then light emission is sustained, but energy consumption increases
Solution Approach 1:
The phosphorescent powder absorbs and stores light energy in advance during the daytime when the LED emits light. This preliminary energy storage allows the system to continue emitting light after power is cut off, extending the light emission duration without requiring continuous electrical energy supply.
Solution Approach 2:
The phosphorescent powder serves itself by absorbing light energy and automatically emitting it as phosphorescence when excited. This self-service mechanism eliminates the need for continuous external electrical energy input, as the material itself provides the light emission function through its inherent phosphorescent properties.
2Duration of action of moving object
If phosphorescent powder is added to the light-transmitting carrier, then light storage capability is achieved, but device complexity increases
Solution Approach 1:
The phosphorescent powder is directly mixed into the light-transmitting carrier material, merging the light storage function with the structural component. This integration approach eliminates the need for separate light storage modules or complex mechanical structures, achieving light storage capability while maintaining simple package construction.
Solution Approach 2:
The light-transmitting carrier is formulated as a composite material containing the phosphorescent powder dispersed within the resin matrix. This composite structure combines the optical properties of the resin with the light storage properties of the phosphorescent powder, achieving multiple functions in a single integrated material without increasing device 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
The solution extends the light-emitting time, reduces electrical energy consumption, and achieves energy-saving effects by utilizing the light energy storing capability of phosphorescent powders, allowing for efficient and continuous light emission.
Implementation Method 1
the phosphorescent powder absorbs a light wavelength (ranging, for example but not limited to, from 400 nm to 460 nm) of the light-emitting package until the phosphorescent powder is capable of emitting bright light and obtains the ability to store light
Data Source
AI summary
A light-emitting package includes a light-transmitting carrier and a light-emitting element. The light-transmitting carrier has a carrying surface, and the light-transmitting carrier contains a base resin and a first phosphorescent powder. The light-emitting element is disposed on the carrying surface. A light-emitting module that contains a phosphorescent powder is also provided.