Batwing Optics for Visible Violet Disinfection Lighting
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Solution Overview
Problem
Violet light-based disinfection devices integrated with white light illumination become indistinguishable, posing a safety risk as individuals cannot discern whether disinfection is operational, compromising safety in built environments.
Innovation Solution
A disinfection lighting device that combines white and violet light sources, utilizing a collimator to collimate white light and a batwing optic to shape violet light, ensuring the violet light is visible as a halo around the white light, maintaining visibility and disinfection efficacy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If violet light is combined with white light illumination, then disinfection can be integrated into general lighting environments, but the violet light becomes indistinguishable from white light, creating a safety risk
Solution Approach 1:
The patent segments the light distribution by creating two distinct spatial patterns: a central white light beam and a surrounding violet light halo. The batwing optic divides the violet light emission into an annular distribution that is spatially separated from the white light core, allowing both lights to coexist while maintaining visual distinguishability through their different spatial arrangements.
2Reliability
If violet light is used for disinfection, then it provides effective germicidal action with less hazard to people, but it becomes indistinguishable when combined with white light
Solution Approach 1:
The patent applies local quality by assigning different spatial characteristics to different wavelengths of light. The white light is concentrated in the central region for general illumination, while the violet light is distributed in an annular halo region for disinfection. This spatial differentiation allows each wavelength to fulfill its specific function while maintaining visual distinguishability through their distinct spatial locations.
3Illumination intensity
If a collimator is used to collimate white light, then a focused white light beam is produced, but the violet light needs separate shaping to maintain distinguishability
Solution Approach 1:
The patent merges the functions of white light collimation and violet light shaping into a single integrated optical system. The collimator and batwing optic work together as a combined assembly where the collimator produces the white light beam and the batwing optic simultaneously shapes the violet light into an annular distribution, achieving both functions without requiring separate independent optical paths.
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
Enables safe and effective disinfection by ensuring violet light is distinguishable from white light, enhancing safety and visibility of disinfection operations in environments with general lighting.
Implementation Method 1
a collimator configured to collimate said white light along the main optical axis into a white light beam
Implementation Method 2
a batwing optic configured to shape said violet light along the main optical axis into a batwing shaped light distribution
Data Source
AI summary
A device including a first solid-state light source configured to emit white light; a second solid-state light source configured to emit violet light having a dominant peak wavelength in a wavelength range from 380 to 420 nm; a collimator configured to collimate the white light along the main optical axis into a white light beam having a first spatial light distribution with a first Full Width Half Maximum (FWHM1); and a batwing optic configured to shape the violet light along the main optical axis into a batwing shaped light distribution with a maximum intensity at an angle α with respect to the main optical axis, such that the angle α is outside the first FWHM1.