Embedded Light Diffusing Element for Continuous Surface Disinfection
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Solution Overview
Problem
Existing disinfection methods for surfaces require the application of anti-bacterial lotions or liquids, which are time-consuming and costly, and do not effectively address the need for a sterile environment without these applications.
Innovation Solution
A light delivery system that includes a light source and a light diffusing element embedded within a surface, using light with specific wavelengths to promote a photochemical reaction for disinfection, potentially combined with photocatalysts like TiO2, to kill germs and inhibit microorganism growth.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If anti-bacterial lotion or liquid is applied to the surface, then bacteria are killed and the surface is decontaminated, but the process is time-consuming and costly
Solution Approach 1:
The patent replaces the mechanical application process of anti-bacterial lotions with a photochemical system. Light sources emitting specific wavelengths (UV, blue, or green light) are used to activate photocatalytic materials on the surface, creating reactive oxygen species that kill bacteria. This substitution eliminates the need for manual application and waiting periods associated with liquid disinfectants.
Solution Approach 2:
The patent changes the fundamental parameter of disinfection from chemical application to optical activation. By using light sources with specific wavelength ranges (200-400nm for UV, 450-495nm for blue, 495-520nm for green) to activate photocatalysts like TiO2, the system achieves continuous disinfection without the time constraints of traditional methods.
2Reliability
If anti-bacterial lotion or liquid is applied to the surface, then bacteria are killed and the surface is decontaminated, but the process is expensive
Solution Approach 1:
The patent substitutes expensive recurring purchases of anti-bacterial lotions with a one-time installation of light sources and photocatalytic coatings. The light sources (LEDs or other efficient emitters) and thin photocatalytic layers provide ongoing disinfection capability without consumable costs, significantly reducing long-term operational expenses.
Solution Approach 2:
The patent replaces expensive, consumable anti-bacterial lotions that require repeated application with durable, long-lasting light sources and photocatalytic surfaces. The system components have extended service lives and eliminate the need for continuous purchasing of disinfectant products.
3Ease of operation
If traditional disinfection methods are used, then surfaces are cleaned, but continuous sterility without applied disinfectants is not achieved
Solution Approach 1:
The patent implements continuous disinfection through permanently installed light sources that continuously emit activating wavelengths. The photocatalytic materials on the surface continuously generate reactive oxygen species in the presence of light, providing ongoing sterilization without interruption or need for reapplication, unlike traditional methods that require periodic manual treatment.
Solution Approach 2:
The patent creates a self-disinfecting surface system where the photocatalytic materials on the surface actively generate antimicrobial action when exposed to light. The surface essentially disinfects itself continuously without requiring external application of disinfectants or manual intervention, achieving autonomous sterility maintenance.
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 system provides a rapid, cost-effective, and continuous method for disinfecting surfaces by using light to promote photochemical reactions, ensuring sterility without the need for applied disinfectants, suitable for use in clean rooms and other environments.
Implementation Method 1
The light diffusing element outputs light to the surface to promote a photochemical reaction to disinfect the surface
Data Source
AI summary
A light delivery system and method are provided to promote a photochemical reaction for disinfecting a surface. The system includes a light source and a light diffusing element operatively coupled to the light source and further embedded within a surface to be disinfected. The light diffusing element outputs light to the surface to promote a photochemical reaction to disinfect the surface. A low scatter light transmission medium may further be coupled between the light source and the light diffusing element to transmit light from the light source remotely to the light diffusing element.