Microwave Generator for Plasma Light Efficacy
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Solution Overview
Problem
Conventional plasma illumination devices have insufficient luminous efficiency and total luminous flux, requiring increased input power to achieve comparable levels to high-intensity discharge lamps, which hampers energy savings and longevity.
Innovation Solution
A plasma light emission device equipped with a microwave generator that achieves maximum output efficiency of 70% or more with input power of 700 W or less, utilizing a dielectric resonator type electromagnetic wave focuser and a specific configuration of the electromagnetic wave generator with 12 or more anode resonant plates to enhance energy density and stability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Duration of action of stationary object
If conventional plasma illumination devices are used, then long lifetime and electrodeless operation are achieved, but luminous efficiency and total luminous flux are insufficient
Solution Approach 1:
The patent optimizes the microwave generator parameters including operating frequency (2.45 GHz), power output (700W or less), and electromagnetic wave focuser geometry to achieve maximum luminous efficiency while maintaining the plasma emission device's long lifetime characteristic. The dielectric resonator type focuser with specific dimensions (outer diameter 50-100mm, length 50-150mm) is designed to concentrate microwave energy effectively into the electrodeless bulb, improving power conversion efficiency without compromising the electrodeless operation that ensures long lifetime.
2Productivity
If input power is increased to improve total luminous flux, then comparable levels to HID lamps are achieved, but energy consumption increases and energy saving is compromised
Solution Approach 1:
The patent replaces the conventional microwave generator system with an optimized dielectric resonator type electromagnetic wave focuser that efficiently directs and concentrates microwave energy into the electrodeless bulb. This substitution improves the coupling efficiency between the microwave generator and the light-emitting medium, achieving high total luminous flux (comparable to 700W HID lamps) while maintaining input power at 700W or less, thus preserving energy saving benefits.
Solution Approach 2:
The patent optimizes the operating frequency (2.45 GHz) and power level (700W or less) of the microwave generator to achieve maximum luminous output. The dielectric resonator focuser is designed with specific geometric parameters (outer diameter 50-100mm, length 50-150mm) to maximize energy concentration efficiency, enabling the system to achieve high total luminous flux without increasing energy consumption beyond 700W input power.
3Power
If conventional microwave generators are used, then plasma emission is achieved, but output efficiency with input power of 700W or less is below 70%
Solution Approach 1:
The patent introduces a dielectric resonator type electromagnetic wave focuser as an intermediary component between the microwave generator and the electrodeless bulb. This focuser acts as a mediator that efficiently couples the microwave energy from the generator into the bulb, concentrating the electromagnetic waves into a focused beam that maximizes energy transfer. This intermediary structure enables the system to achieve output efficiency of 70% or more with input power of 700W or less by minimizing energy losses in the transmission and coupling process.
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 significantly improves luminous efficiency and total luminous flux, enabling energy-saving and long-lasting plasma emission devices suitable for high-output applications while maintaining low power consumption and extended device lifespan.
Implementation Method 1
a microwave generator (2), a dielectric resonator type electromagnetic wave focuser (6) to which the microwave generated in the microwave generator (2) is guided
Implementation Method 2
dielectric resonator type electromagnetic wave focuser (6) to which the microwave generated in the microwave generator (2) is guided
Implementation Method 3
The light-emitting material filled in the electrodeless bulb (7) is excited by the microwave focused by the microwave focuser (6) to the electrodeless bulb (7)
Implementation Method 4
The light-emitting material filled in the electrodeless bulb (7) is excited by the microwave focused by the microwave focuser (6) to the electrodeless bulb (7) to thereby perform plasma light emission
Implementation Method 5
perform plasma light emission
Data Source
AI summary
A plasma emission device 1 in an embodiment includes: an electromagnetic wave generator 2; a waveguide 4 that transmits an electromagnetic wave emitted from the electromagnetic wave generator 2; an antenna 5 that receives the electromagnetic wave transmitted through the waveguide 4; an electromagnetic wave focuser 6 that is irradiated with the electromagnetic wave from the antenna 5; and an electrodeless bulb 7 disposed in the electromagnetic wave focuser 6. A light-emitting material filled in the electrodeless bulb 7 is excited by the electromagnetic wave focused by the electromagnetic wave focuser 6 to perform plasma emission. The electromagnetic wave generator 2 includes a cathode part and an anode part A maximum output efficiency of the electromagnetic wave to be generated with an input power of 700 W or less is 70% or more.