Internal Dielectric Electrode Filter for Higher-Purity Far-UVC Lamps
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Solution Overview
Problem
Traditional Far-UVC excimer lamps have low efficiency in emitting Far-UVC light within the 180-240 nm wavelength range due to external filtering methods, which reduces their disinfection effectiveness.
Innovation Solution
Incorporating a Far-UVC optical dielectric coating filter attached to the interior sides of the electrodes within the excimer light source, allowing for multiple passes of unfiltered light through the filter, thereby increasing the purity and efficiency of Far-UVC emission without the need for external components.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If an external filter is used to filter Far-UVC light, then the purity of Far-UVC emission is improved, but the efficiency and intensity of Far-UVC light emission deteriorates
Solution Approach 1:
The patent merges the filter with the electrode by depositing a dielectric coating directly onto the electrode surface. This integration allows the filter to be part of the light generation structure itself, enabling multiple passes of light through the filtering medium without requiring separate external filtering components, thereby maintaining high Far-UVC purity while improving emission efficiency.
Solution Approach 2:
The patent transitions from external filtering (separate component) to internal filtering (integrated into electrode structure). By moving the filtering function into another dimension of the system architecture (from external to internal), the light can pass through the filter multiple times within the compact lamp structure, enhancing both purity and efficiency simultaneously.
2Manufacturing precision
If an external filter is used to filter Far-UVC light, then the purity of Far-UVC emission is improved, but the device complexity increases
Solution Approach 1:
The filter and electrode are merged into a single integrated component. The dielectric coating is deposited directly onto the electrode surface, eliminating the need for separate external filtering components. This reduction in component count simplifies the overall device structure while maintaining effective Far-UVC light purification.
Solution Approach 2:
The electrode serves multiple functions: it provides electrical conduction for excimer generation and simultaneously acts as a filtering surface through the integrated dielectric coating. This multi-functionality reduces the number of separate components needed, thereby simplifying device complexity while achieving high Far-UVC purity.
3Manufacturing precision
If multiple passes of light through the filter are achieved, then the purity of Far-UVC emission is improved, but the light intensity is reduced
Solution Approach 1:
The patent reconfigures the optical path by integrating the filter within the electrode structure, enabling light to pass through the filtering medium multiple times in a compact arrangement. This dimensional reorganization allows multiple filtering passes without requiring a linear extension of the optical path, thereby maintaining high Far-UVC purity while preserving light intensity through efficient spatial utilization.
Solution Approach 2:
The filtering function is nested within the electrode structure itself. The dielectric coating is deposited onto the electrode surface, creating a nested configuration where the filter is contained within the overall electrode assembly. This nesting enables multiple light passes through the filter in a compact space, improving purity without significantly reducing intensity due to the efficient use of optical path length.
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 disinfection efficiency by achieving higher purity and intensity of Far-UVC light emission, reducing disinfection time and improving light exposure levels, while maintaining a compact design for easier integration with additional components like infrared light sources.
Implementation Method 1
a Far-UVC optical dielectric coating filter which is a Far-UVC filter attached to the interior side of the first electrode and adapted to filter a Far-UVC light excited in the cavity of the body
Implementation Method 2
the first electrode is at least partially made of a net metal to transmit the Far-UVC light through its attached Far-UVC dielectric coating filter inside the light source
Implementation Method 3
at least one of the electrodes can also be configured to further reflect the unfiltered Far-UVC light excited in the cavity of the light source
Data Source
AI summary
A Far-UVC excimer light source contains a first electrode adapted to be energized, a second electrode adapted to be energized, a body defining a cavity that is filled with an excited molecule complex between the first and second electrodes; and a Far-UVC optical dielectric coating filter which is a Far-UVC filter attached to the interior side of the first electrode and adapted to filter a Far-UVC light excited in the cavity of the body. The Far-UVC dielectric coating is located inside the light source, between the cavity with the excited molecules and the first electrode. The Far-UVC filter attached to the interior side of the first electrode is a transmissive Far-UVC optical filtering dielectric coating or coated glass which is integrated, placed on, or near the interior side of the first electrode inside the light source.