Insect Trap Using Low UV Reflectance Reflector
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Solution Overview
Problem
Conventional insect pest control apparatuses are ineffective in attracting and trapping diurnal agricultural insect pests during the daytime due to low UV-A content in ultraviolet light emission and limited attraction performance, resulting in insufficient trapping quantities.
Innovation Solution
An insect pest-controlling apparatus incorporating a light-reflecting attraction unit with low UV reflectance and an odor generation unit using green leaf alcohol or aldehyde, combined with a light irradiation unit emitting specific UV wavelength ranges, to enhance attraction and trapping of diurnal agricultural insect pests during the day.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a conventional light source emitting UV-A light is used to attract insect pests, then nighttime insect pests that are phototactic can be attracted and trapped, but diurnal agricultural insect pests cannot be attracted in large quantities because the light has low UV-A content compared with sunlight
Solution Approach 1:
The patent changes the wavelength parameter of the emitted light from UV-A (320-380 nm) to UV-B (280-320 nm) range. This parameter change allows the light to be more effectively recognized by diurnal agricultural insect pests while still providing sufficient attraction capability, thereby increasing trapping quantity during daytime when these pests are active.
Solution Approach 2:
The patent introduces a light source that can dynamically adjust its emission characteristics to match the activity patterns of different insect pests. By using a light source that emits in the UV-B range, the system becomes adaptable to attract both nighttime phototactic insects and daytime diurnal agricultural insect pests, optimizing trapping productivity across different time periods.
2Productivity
If a color reflector and pheromones are used to attract diurnal agricultural insect pests, then some attraction can be achieved, but the attraction performance is low and cannot trap a large number of pests
Solution Approach 1:
The patent extracts and eliminates the ineffective color reflector component from the attraction mechanism. Instead of using a complex combination of color reflectors and pheromones, the invention relies solely on the optimized UV-B light source to attract diurnal agricultural insect pests, simplifying the device while significantly improving trapping productivity.
Solution Approach 2:
The patent replaces the mechanical/optical system of color reflectors with a more effective light emission system. By substituting the reflector-based attraction mechanism with a directly emitting UV-B light source, the system achieves superior attraction performance with reduced complexity.
3Illumination intensity
If UV-A light is emitted to attract insect pests, then phototactic insects can be attracted at night, but the light contrast is insufficient during daytime when diurnal pests are active
Solution Approach 1:
The patent changes the light wavelength parameter from UV-A to UV-B range (280-320 nm). This parameter change creates sufficient light contrast during daytime because UV-B light is less present in natural sunlight, making the artificial light source stand out more effectively to diurnal agricultural insect pests and improving attraction effectiveness.
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 apparatus effectively attracts and traps diurnal agricultural insect pests in larger quantities by increasing UV contrast and using specific odors to attract pests from a wider area, even under sunlight conditions, while preventing plant disease by filtering out harmful UV-A wavelengths.
Implementation Method 1
a light-reflecting attraction unit that reflects sunlight
Implementation Method 2
a light source to emit light containing ultraviolet rays
Data Source
Figure 1
Figure 2~3
Figure 4a~4b
AI summary
An insect pest-controlling apparatus (1) includes a light-reflecting attraction unit (4) that reflects sunlight and a trap (6) to trap insects attracted to light reflected by the light-reflecting attraction unit (4). The light-reflecting attraction unit (4) is a reflector whose reflectance of 220 to 390 nm light wavelength components is 5% or less. Because the light-reflecting attraction unit (4) reflects almost no ultraviolet rays, the contrast of ultraviolet rays is increased in the space compared with sunlight by the insect pest-controlling apparatus (1) and diurnal agricultural insect pests are strongly attracted to the light-reflecting attraction unit (4). Accordingly, diurnal agricultural insect pests can be attracted and trapped in large quantities in the daytime.