Insect-Attracting Light Spectrum Design With Reduced Mid-Band Excitation
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Solution Overview
Problem
Existing illumination systems struggle to reliably attract insects to one light source while minimizing the attraction to the other, requiring precise recognition of spectrum power distributions.
Innovation Solution
A light source device emits light with specific wavelength bands to excite certain visual cells in an insect's eye less effectively, using visual pigments with absorption peaks between two absorption wavelength bands, and optionally employs light conversion or reflection members to enhance this effect.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If two types of light sources with different spectrum power distributions are used to attract insects, then the attraction effect on insects is improved, but the reliability of acquiring the attraction effect is insufficient
Solution Approach 1:
The patent applies parameter changes by precisely controlling the spectrum power distribution parameters of the light source. Specifically, it sets the light source to emit light with a spectrum power distribution that has a peak in the blue region (460-480nm) and suppresses emission in the green region (500-560nm), creating a distinctive spectral signature that reliably attracts insects while minimizing attraction to other light sources with different spectral characteristics.
Solution Approach 2:
The patent applies local quality by creating localized spectral characteristics in specific wavelength regions. The illumination device is designed to have high emission intensity in the blue wavelength region (460-480nm) while maintaining low emission intensity in the green wavelength region (500-560nm), thereby creating a spatially differentiated spectral quality that selectively attracts insects sensitive to blue light.
2Reliability
If light sources are selected based on spectrum power distribution differences, then insect attraction is improved, but the complexity of selecting and managing multiple light sources increases
Solution Approach 1:
The patent applies segmentation by dividing the spectrum into distinct wavelength regions with different emission characteristics. The illumination device segments the spectral output such that the blue region (460-480nm) has high intensity while the green region (500-560nm) has low intensity, creating clearly separated spectral zones that simplify the selection criteria for effective insect-attracting light sources.
Solution Approach 2:
The patent applies universality by designing a single illumination device that performs multiple functions: it attracts insects through blue light emission, provides sufficient illumination for the application area, and simultaneously avoids attracting other unwanted elements by suppressing green light. This multi-functionality reduces the need for multiple specialized light sources.
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 achieves a high degree of reliability in attracting insects by reducing the excitability of specific visual cells, thereby enhancing the attraction effect.
Implementation Method 1
visual pigments having mutually different absorption wavelength bands that are wavelength bands of absorbed light
Implementation Method 2
a light source device emits light in which, among a plurality of types of visual cells
Data Source
Figure 1A
Figure 1B
Figure 2A
AI summary
A light source device emits light in which, among a plurality of types of visual cells including visual pigments having mutually different absorption wavelength bands that are wavelength bands of absorbed light, and constituting a part of an eye of an insect excited when light is absorbed by the visual pigment, as compared to excitability of visual cells including visual pigments having two absorption wavelength bands in which absorption peaks are separated, at least one visual cell including a visual pigment having an absorption wavelength band having an absorption peak between the absorption peaks of the two absorption wavelength bands has lower excitability.