Modular Multi-Wavelength UV-VIS Detector with Floating Rig Alignment
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Solution Overview
Problem
UV-VIS spectrophotometers in HPLC systems face limitations due to the spatial and spectral broadness of traditional light sources like deuterium lamps, requiring optical conditioning and having limited lifespans, which increases operational time and cost, and restricts analyte detection based on spectral characteristics, often necessitating additional equipment or upgrades.
Innovation Solution
A modular multi-wavelength UV-VIS detector unit with a sliding assembly and light-emitting diodes (LEDs) mounted on a floating rig, allowing for precise alignment and easy access, enabling flexible spectral coverage without the need for extensive upgrades or additional systems.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If traditional light sources (deuterium lamps, mercury arc lamps, tungsten lamps) are used, then broad spectral coverage is achieved, but the light sources are large, require optical conditioning, have limited lifespan, and increase operational cost and complexity
Solution Approach 1:
The patent segments the single broad-spectrum light source into multiple individual LEDs, each emitting at a specific wavelength. This segmentation allows each LED to be independently optimized for its wavelength range, eliminating the need for complex optical conditioning while achieving comprehensive spectral coverage through the combination of multiple discrete light sources.
Solution Approach 2:
The patent creates a universal light source system where multiple LEDs with different wavelengths can be used to detect various analytes with different spectral characteristics. This multi-functional approach replaces the need for different specialized light sources, achieving broad spectral coverage while simplifying the overall system design.
2Adaptability or versatility
If traditional light sources are used, then broad spectral coverage is achieved, but the light sources have limited lifespan and require pre-warming, increasing operational time and cost
Solution Approach 1:
The patent employs LEDs which, while individually having limited lifespans compared to traditional lamps, offer the advantage of being solid-state, maintenance-free, and replaceable without complex procedures. The modular design allows individual LEDs to be replaced independently, effectively managing the lifespan issue while maintaining continuous operation and broad spectral coverage.
3Device complexity
If individual LEDs are used, then longer lifespan and smaller size are achieved, but the spectral coverage is limited based on LED configuration
Solution Approach 1:
The patent merges multiple individual LEDs with different emission wavelengths into a single integrated light source assembly. This combination allows the system to achieve broad spectral coverage by utilizing the collective output of multiple LEDs, each contributing a specific wavelength range, while maintaining the compact size and long lifespan advantages of individual LEDs.
Solution Approach 2:
The patent implements a dynamic light source configuration where individual LEDs can be selectively activated based on the detection requirements. This dynamic approach allows the system to adapt its spectral output to match the specific analyte being detected, maximizing versatility while maintaining a compact design.
4Adaptability or versatility
If UV-VIS spectrophotometer is upgraded to detect new spectral ranges, then detection capability is improved, but disassembly and installation of new components is required
Solution Approach 1:
The patent segments the light source system into modular, independently replaceable LED modules. This segmentation allows individual wavelength-specific LED modules to be easily swapped without disassembling the entire spectrophotometer, significantly simplifying upgrades and maintenance while improving detection capability for different spectral ranges.
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
This configuration enhances detection capabilities, reduces operational costs, and allows for accurate analyte identification across a broader spectral range with improved light transmission and reduced maintenance needs, enabling more efficient and cost-effective HPLC operations.
Implementation Method 1
one or more light emitters (e.g., light-emitting diodes)
Implementation Method 2
The light may be partially to fully absorbed by the component depending on the chemical structure and concentration of the component as well as the wavelength(s) of light used
Data Source
AI summary
Systems are provided for a modular multi-wavelength UV-VIS detector unit, such as an absorbance detector (e.g., spectrophotometer) included in a high-performance liquid chromatography system. In one example, a detector unit includes one or more light emitters and a sliding assembly configured to slidingly move a flow cell relative to the one or more light emitters, the one or more light emitters mounted on a floating rig to facilitate alignment between the one or more light emitters and the flow cell when the sliding assembly is in a closed position.