Resonant Light Emission Switching to Suppress Resonance Attenuation
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Solution Overview
Problem
In light emitting devices with resonant circuits, constant conductivity between the power supply and the resonant circuit can lead to attenuation of resonance, reducing the efficiency of light emission.
Innovation Solution
Incorporating a first switching unit that controls the conductivity between the power supply and the resonant circuit, allowing it to switch between conductive and non-conductive states, thereby managing the flow of electric charge and maintaining resonance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If the circuit from the power supply to the resonant circuit is constantly conductive, then the electric accumulator can be continuously charged, but the resonance in the resonant circuit is attenuated
Solution Approach 1:
The patent applies periodic action by controlling the first switching unit to switch between conduction and non-conduction states periodically. The power supply circuit is made conductive only during specific time periods when the light emitting element is not emitting light, allowing the electric accumulator to be charged periodically without continuously affecting the resonance. This resolves the contradiction by enabling charging functionality while maintaining resonance stability during light emission periods.
2Reliability
If the first switching unit switches to non-conduction state during light emission, then resonance attenuation is suppressed, but the charging time of the electric accumulator increases
Solution Approach 1:
The patent applies preliminary action by charging the electric accumulator in advance during periods when the light emitting element is not emitting light. The control unit is configured to make the power supply circuit conductive before the light emission period ends, ensuring the accumulator is sufficiently charged for the next emission cycle. This allows the system to maintain resonance stability during emission while preparing the charging function in advance during idle periods.
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 effectively suppresses resonance attenuation, allowing for more efficient light emission and shorter time periods between light emissions, while also facilitating easier identification of light reception timing in detection applications.
Implementation Method 1
a resonant circuit that is provided with an electric accumulator accumulating electric charge and generates resonance
Data Source
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AI summary
A light emitting device includes: a resonant circuit that is provided with an electric accumulator accumulating electric charge and generates resonance; a light emitting element that emits light in a case where a current in the resonant circuit is supplied; and a first switching unit that is connected to a circuit between a power supply that supplies electric charge to the electric accumulator and the resonant circuit, and switches between a conduction state in which a circuit from the power supply to the resonant circuit is conductive and a non-conduction state in which the circuit is not conductive.