Light Modulation Device Dynamic Wavelength Selection
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Solution Overview
Problem
Existing spectrum detection devices with multiple light outlets at fixed positions require complex control to direct microfluids into corresponding channels, leading to inaccurate detection results due to the need for precise flow path management across multiple channels.
Innovation Solution
A light modulation device with a light guide plate, dispersing component, and dynamic filtering component, which disperses light into different wavelengths and filters out non-selected wavelengths, allowing for dynamic adjustment of the light wavelength emitted, comprising a grating layer and liquid crystal molecules that control the deflection of light based on applied voltages to select specific wavelengths for emission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple light outlets at fixed positions are used to emit light of different wavelengths, then spectrum detection capability is improved, but device complexity increases due to requiring multiple microfluidic channels and complex flow path management
Solution Approach 1:
The patent applies the dynamics principle by replacing fixed wavelength emission with dynamic wavelength selection. A single light outlet is used with a tunable filter that can dynamically adjust the emitted wavelength based on control signals, allowing the system to detect multiple wavelengths sequentially through one channel rather than requiring multiple fixed channels simultaneously
Solution Approach 2:
The patent implements universality by designing a single microfluidic channel that can handle all wavelength detections, rather than requiring separate dedicated channels for each wavelength. The single channel serves multiple functions by detecting different wavelengths at different time points, eliminating the need for complex multi-channel infrastructure
2Adaptability or versatility
If multiple microfluidic channels are used for different wavelengths, then detection coverage is improved, but microfluid control complexity increases leading to inaccurate detection results
Solution Approach 1:
The system uses dynamic wavelength filtering to allow a single microfluidic channel to sequentially detect multiple wavelengths. The tunable filter changes its transmission wavelength under control signals, enabling one channel to perform the work of multiple channels without requiring complex fluid routing and synchronization
Solution Approach 2:
The patent segments the wavelength detection function from the spatial channel structure. Instead of having each wavelength require a separate physical channel, the wavelength selection function is separated and implemented through the tunable filter, allowing all wavelengths to share a common detection path
3Measurement precision
If precise flow path management across multiple channels is required, then detection accuracy can be maintained, but system complexity and operational difficulty increase
Solution Approach 1:
The patent uses dynamic wavelength filtering to maintain detection accuracy without requiring precise multi-channel flow management. By selecting wavelengths dynamically through the tunable filter rather than through spatial separation, the system achieves accurate spectral detection with a single, simpler flow path that does not require complex routing precision
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 accurate and simplified detection by allowing the light modulation device to dynamically select and emit specific wavelengths, reducing the complexity of microfluid control and improving detection accuracy in a single-channel spectrum detection system.
Implementation Method 1
a dispersing component configured to disperse received light into light of different wavelengths and to diffract the light of different wavelengths into the light guide plate at different angles
Implementation Method 2
liquid crystal molecules that control the deflection of light based on applied voltages to select specific wavelengths for emission
Data Source
AI summary
A light modulation device and a single-channel spectrum detection system are provided. The light modulation device includes: a light guide plate; a dispersing component configured to disperse received light into light of different wavelengths and to diffract the light of different wavelengths into the light guide plate at different angles; and a dynamic filtering component configured to prevent light of a selected wavelength in the light guide plate from entering the dynamic filtering component such that the light of the selected wavelength emits out from the light guide plate, and to make light of non-selected wavelengths in the light guide plate enter the dynamic filtering component such that the light of the non-selected wavelengths is filtered out from the light guide plate.