General illumination LED system including far UV c
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Solution Overview
Problem
Current UV-C sterilization technologies are not safe for use in the presence of people and living tissues, as they can emit harmful wavelengths that pose risks to humans, especially during maintenance or exposure, and lack efficient and affordable solutions for continuous public use.
Innovation Solution
A human-safe UV-C sterilizing bulb using 207 nm or 222 nm excimer technology combined with an integral band pass filter that blocks harmful wavelengths, integrated with a Dielectric Barrier Discharge (DBD) system and quartz glass envelope, along with a smart chip for monitoring and IoT connectivity, ensuring safe operation and efficient pathogen killing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional UV-C sterilization technologies are used, then pathogen killing effectiveness is improved, but safety for human exposure deteriorates
Solution Approach 1:
The patent segments the UV-C spectrum by using multiple LEDs emitting at different wavelengths (207 nm, 222 nm, 254 nm) to selectively target pathogens while avoiding harmful wavelengths. This segmentation allows the system to achieve effective sterilization while minimizing harm to human tissues by excluding certain wavelength ranges.
Solution Approach 2:
The patent applies local quality by incorporating wavelength-specific filters (such as 234 nm long-pass filters and 258 nm short-pass filters) at specific positions in the optical path. These filters selectively transmit or block certain wavelengths locally, ensuring that only safe and effective wavelengths reach both the pathogens and the surrounding environment.
2Ease of operation
If UV-C sterilization is implemented for continuous public use, then accessibility and convenience are improved, but safety risks worsen
Solution Approach 1:
The patent incorporates sensors and control systems that monitor UV-C emission levels and adjust operation accordingly. This feedback mechanism ensures that the system maintains safe operating levels while providing continuous sterilization, allowing public spaces to benefit from ongoing disinfection without exposing people to harmful radiation levels.
Solution Approach 2:
The patent changes the operational parameters by using multiple LED wavelengths and adjustable intensity levels. The system can modify its output parameters (wavelength composition, intensity) based on operational needs and safety requirements, enabling continuous operation in public spaces while maintaining safe exposure levels through dynamic parameter adjustment.
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 provides a safe, efficient, and affordable UV-C sterilization system that effectively kills pathogens without harming humans, with enhanced light output and reduced harmful radiation exposure, enabling continuous use in public places while ensuring user safety during maintenance and operation.
Implementation Method 1
integrated with a Dielectric Barrier Discharge (DBD) system
Implementation Method 2
UV-C is recognized as one of the most effective wavelengths at killing the small pathogens
Implementation Method 3
an integral band pass filter that blocks harmful wavelengths
Implementation Method 4
quartz glass envelope
Data Source
AI summary
An excimer bulb assembly, with an excimer bulb, at least one integral captured reflector, and an integral filter such that the excimer bulb only emits substantial UV radiation between 200 nm and 230 nm, using a filter that passes light from about 200 nm to 234 nm (+/â2 nm).