Ultraviolet Diffusive Illumination Cavity Design
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current systems fail to effectively generate diffusive ultraviolet radiation due to difficulties in implementing good light reflective and transparent materials, limiting their use in UV illumination designs.
Innovation Solution
A diffusive ultraviolet radiation illuminator is developed, featuring a reflective cavity with surfaces that can diffusively reflect at least 70% and transmit at least 30% of ultraviolet radiation, utilizing high-performance polymers and reflective materials to achieve efficient UV distribution.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If UV transparent materials are used, then UV radiation transmission is improved, but manufacturing difficulty increases and cost increases
Solution Approach 1:
The patent replaces expensive, difficult-to-manufacture UV transparent materials with a combination of inexpensive, easily manufactured components: a standard light guide (can be acrylic or other common plastics), white diffusive paint, and ordinary reflective materials. These components are mass-producible and readily available, eliminating the manufacturing difficulties associated with specialized UV transparent materials while maintaining UV transmission capability.
2Illumination intensity
If UV transparent materials are used, then UV radiation transmission is improved, but cost increases
Solution Approach 1:
The patent substitutes costly UV transparent materials with inexpensive alternatives: standard light guide materials (acrylic, polycarbonate), common white paints for diffusive surfaces, and ordinary reflective materials. These components are commercially available and mass-producible, dramatically reducing the overall system cost while achieving the required UV transmission performance.
3Stability of the object's composition
If diffusive materials are used, then UV radiation distribution uniformity is improved, but transmission efficiency decreases
Solution Approach 1:
The patent applies diffusive properties selectively only where needed for uniform distribution (on the rear surface and internal cavity surfaces) while keeping the front emission surface highly transparent and efficient. The light guide itself remains largely non-diffusive to maintain transmission efficiency, with diffusion achieved through painted surfaces and cavity geometry rather than bulk material diffusion.
Solution Approach 2:
The patent introduces white diffusive paint as an intermediary layer on the rear surface and cavity surfaces, which converts directional UV radiation into diffuse radiation without significantly attenuating the overall transmission. This intermediary enables uniform distribution while preserving transmission efficiency that would be lost in bulk diffusive materials.
4Illumination intensity
If reflective materials are used, then UV radiation reflection is improved, but material availability and ease of manufacture worsen
Solution Approach 1:
The patent replaces specialized UV reflective materials with common, easily obtainable materials such as white paints (which provide both diffusion and reflection), standard reflective foils, and conventional metallic surfaces. These materials are readily available in any hardware store or manufacturing supply, eliminating the need for specialized UV-optimized reflective materials.
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 enables effective disinfection of objects by ensuring uniform and efficient distribution of ultraviolet radiation, achieving significant reductions in microbial contamination, such as E. coli colonies, with a low power UV radiation system.
Implementation Method 1
at least one of the plurality of surfaces can be configured to diffusively reflect at least 70% of the ultraviolet radiation
Implementation Method 2
at least one of the plurality of surfaces can be configured to transmit at least 30% of the ultraviolet radiation
Data Source
AI summary
A solution for generating ultraviolet diffusive radiation is provided. A diffusive ultraviolet radiation illuminator includes at least one ultraviolet radiation source located within a reflective cavity that includes a plurality of surfaces. At least one of the plurality of surfaces can be configured to diffusively reflect at least 70% of the ultraviolet radiation and at least one of the plurality of surfaces can be configured to transmit at least 30% of the ultraviolet radiation and reflect at least 10% of the ultraviolet radiation.