UV Curing Module Dual-LED Spectrum Merging
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Solution Overview
Problem
Current ultraviolet curing lamps using UV light emitting diodes emit ultraviolet with a narrower spectrum, leading to slower photo initial reaction and inefficient curing of UV curable resins.
Innovation Solution
An ultraviolet curing module comprising a first and second light source with different peak wavelengths, where the difference is greater than 35 nm, and their irradiation ranges overlap on the irradiated object, allowing for faster and more efficient curing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single ultraviolet light emitting diode is used as the light source, then the device complexity is reduced, but the curing efficiency and photo initial reaction speed deteriorate due to the narrow spectrum
Solution Approach 1:
The patent combines multiple ultraviolet light emitting diodes with different peak wavelengths (first UV LED with first peak wavelength and second UV LED with second peak wavelength, where the difference is greater than 35 nm) into a single curing module. This merging approach broadens the overall emission spectrum while maintaining relatively simple device structure, thereby improving photo initial reaction speed and curing efficiency without significantly increasing complexity.
Solution Approach 2:
The patent creates a composite light source system by integrating LEDs with different spectral characteristics. The first and second ultraviolet light emitting diodes function together as a composite system, where each LED contributes a specific wavelength range, creating a broader effective curing spectrum that enhances both productivity and spectral coverage.
2Device complexity
If a single peak wavelength ultraviolet light source is used, then the light source design is simplified, but the photo initial reaction of UV curable resin is slower
Solution Approach 1:
The patent merges multiple UV LEDs emitting at different peak wavelengths into a single light source configuration. The first UV LED emits at a first peak wavelength and the second UV LED emits at a second peak wavelength, creating a combined spectrum that covers a broader range and accelerates photo initial reaction speed while keeping the light source configuration relatively simple.
Solution Approach 2:
The patent applies local quality by assigning different spectral characteristics to different parts of the light source system. The first and second UV LEDs are configured with different peak wavelengths to target specific absorption bands of the UV curable resin, optimizing the photo initial reaction speed at different spectral regions while maintaining overall system simplicity.
3Use of energy by moving object
If ultraviolet light with a single peak wavelength is emitted, then the energy distribution is concentrated, but the curing speed and efficiency are insufficient
Solution Approach 1:
The patent combines energy from multiple UV LEDs with different peak wavelengths into a unified curing system. The first and second UV LEDs each contribute concentrated energy at their respective peak wavelengths, and when merged, this creates a broader energy distribution that accelerates curing speed and improves overall productivity while maintaining efficient energy utilization.
Solution Approach 2:
The patent changes the spectral parameter by using UV LEDs with different peak wavelengths (difference greater than 35 nm). This parameter change allows the system to match different absorption characteristics of the UV curable resin, thereby improving photo initial reaction speed and curing efficiency while maintaining effective energy concentration at multiple spectral points.
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 module achieves higher curing efficiency by overlapping the irradiation ranges of UV light sources with different peak wavelengths, enhancing the initial reaction and curing speed of UV curable resins.
Implementation Method 1
current ultraviolet curing lamps start using ultraviolet light emitting diodes as light sources
Implementation Method 2
photo initial reaction of an UV curable resin to be irradiated and cured
Data Source
AI summary
An ultraviolet curing module includes a first light source and a second light source. The first light source is configured to emit ultraviolet with a first spectrum. The first spectrum has a first peak wavelength. The second light source is configured to emit ultraviolet with a second spectrum. The second spectrum has a second peak wavelength. Wherein, a difference between the first peak wavelength and the second peak wavelength is greater than 35 nm, and an irradiation range of ultraviolet of the first light source on an irradiated object at least partially overlaps an irradiation range of ultraviolet of the second light source on the irradiated object.